Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1 | /* |
| 2 | * QEMU host block devices |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or |
| 7 | * later. See the COPYING file in the top-level directory. |
Markus Armbruster | 3618a09 | 2013-03-14 13:59:53 +0100 | [diff] [blame] | 8 | * |
| 9 | * This file incorporates work covered by the following copyright and |
| 10 | * permission notice: |
| 11 | * |
| 12 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 13 | * |
| 14 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 15 | * of this software and associated documentation files (the "Software"), to deal |
| 16 | * in the Software without restriction, including without limitation the rights |
| 17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 18 | * copies of the Software, and to permit persons to whom the Software is |
| 19 | * furnished to do so, subject to the following conditions: |
| 20 | * |
| 21 | * The above copyright notice and this permission notice shall be included in |
| 22 | * all copies or substantial portions of the Software. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 30 | * THE SOFTWARE. |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 31 | */ |
| 32 | |
Peter Maydell | d38ea87 | 2016-01-29 17:50:05 +0000 | [diff] [blame] | 33 | #include "qemu/osdep.h" |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 34 | #include "sysemu/block-backend.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 35 | #include "sysemu/blockdev.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 36 | #include "hw/block/block.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 37 | #include "block/blockjob.h" |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 38 | #include "block/throttle-groups.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 39 | #include "monitor/monitor.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 40 | #include "qemu/error-report.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 41 | #include "qemu/option.h" |
| 42 | #include "qemu/config-file.h" |
Markus Armbruster | 9af2398 | 2018-02-11 10:36:01 +0100 | [diff] [blame] | 43 | #include "qapi/qapi-commands-block.h" |
| 44 | #include "qapi/qapi-commands-transaction.h" |
| 45 | #include "qapi/qapi-visit-block-core.h" |
Markus Armbruster | 452fcdb | 2018-02-01 12:18:39 +0100 | [diff] [blame] | 46 | #include "qapi/qmp/qdict.h" |
Markus Armbruster | 15280c3 | 2018-02-01 12:18:36 +0100 | [diff] [blame] | 47 | #include "qapi/qmp/qnum.h" |
Markus Armbruster | 6b67395 | 2018-02-01 12:18:35 +0100 | [diff] [blame] | 48 | #include "qapi/qmp/qstring.h" |
Markus Armbruster | e688df6 | 2018-02-01 12:18:31 +0100 | [diff] [blame] | 49 | #include "qapi/error.h" |
Markus Armbruster | cc7a8ea | 2015-03-17 17:22:46 +0100 | [diff] [blame] | 50 | #include "qapi/qmp/qerror.h" |
Markus Armbruster | 47e6b29 | 2018-02-01 12:18:38 +0100 | [diff] [blame] | 51 | #include "qapi/qmp/qlist.h" |
Daniel P. Berrange | b3db211 | 2016-09-30 15:45:27 +0100 | [diff] [blame] | 52 | #include "qapi/qobject-output-visitor.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 53 | #include "sysemu/sysemu.h" |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 54 | #include "sysemu/iothread.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 55 | #include "block/block_int.h" |
Daniel P. Berrange | 0ab8ed1 | 2017-01-25 16:14:15 +0000 | [diff] [blame] | 56 | #include "block/trace.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 57 | #include "sysemu/arch_init.h" |
Thomas Huth | c616f16 | 2017-05-12 12:33:49 +0200 | [diff] [blame] | 58 | #include "sysemu/qtest.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 59 | #include "qemu/cutils.h" |
| 60 | #include "qemu/help_option.h" |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 61 | #include "qemu/throttle-options.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 62 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 63 | static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
| 64 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); |
| 65 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 66 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
| 67 | bool force, Error **errp); |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 68 | static void blockdev_remove_medium(bool has_device, const char *device, |
| 69 | bool has_id, const char *id, Error **errp); |
| 70 | static void blockdev_insert_medium(bool has_device, const char *device, |
| 71 | bool has_id, const char *id, |
| 72 | const char *node_name, Error **errp); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 73 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 74 | static const char *const if_name[IF_COUNT] = { |
| 75 | [IF_NONE] = "none", |
| 76 | [IF_IDE] = "ide", |
| 77 | [IF_SCSI] = "scsi", |
| 78 | [IF_FLOPPY] = "floppy", |
| 79 | [IF_PFLASH] = "pflash", |
| 80 | [IF_MTD] = "mtd", |
| 81 | [IF_SD] = "sd", |
| 82 | [IF_VIRTIO] = "virtio", |
| 83 | [IF_XEN] = "xen", |
| 84 | }; |
| 85 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 86 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 87 | /* |
| 88 | * Do not change these numbers! They govern how drive option |
| 89 | * index maps to unit and bus. That mapping is ABI. |
| 90 | * |
Wei Jiangang | 547cb15 | 2016-04-26 18:12:43 +0800 | [diff] [blame] | 91 | * All controllers used to implement if=T drives need to support |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 92 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 93 | * Otherwise, some index values map to "impossible" bus, unit |
| 94 | * values. |
| 95 | * |
| 96 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 97 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 98 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 99 | * the drive can't be set up. Regression. |
| 100 | */ |
| 101 | [IF_IDE] = 2, |
| 102 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 103 | }; |
| 104 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 105 | /** |
| 106 | * Boards may call this to offer board-by-board overrides |
| 107 | * of the default, global values. |
| 108 | */ |
| 109 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 110 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 111 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 112 | DriveInfo *dinfo; |
| 113 | |
| 114 | if (max_devs <= 0) { |
| 115 | return; |
| 116 | } |
| 117 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 118 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 119 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 120 | if (dinfo->type == type) { |
| 121 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 122 | " the %s interface, because a drive of that type has" |
| 123 | " already been added.\n", if_name[type]); |
| 124 | g_assert_not_reached(); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | if_max_devs[type] = max_devs; |
| 129 | } |
| 130 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 131 | /* |
| 132 | * We automatically delete the drive when a device using it gets |
| 133 | * unplugged. Questionable feature, but we can't just drop it. |
| 134 | * Device models call blockdev_mark_auto_del() to schedule the |
| 135 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 136 | * when deletion is actually safe. |
| 137 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 138 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 139 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 140 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 141 | BlockDriverState *bs = blk_bs(blk); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 142 | AioContext *aio_context; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 143 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 144 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 145 | return; |
| 146 | } |
| 147 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 148 | if (bs) { |
| 149 | aio_context = bdrv_get_aio_context(bs); |
| 150 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 151 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 152 | if (bs->job) { |
Liang Li | b76e445 | 2018-03-13 08:12:16 -0400 | [diff] [blame] | 153 | block_job_cancel(bs->job, false); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | aio_context_release(aio_context); |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 157 | } |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 158 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 159 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 160 | } |
| 161 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 162 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 163 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 164 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 165 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 166 | if (dinfo && dinfo->auto_del) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 167 | monitor_remove_blk(blk); |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 168 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 169 | } |
| 170 | } |
| 171 | |
John Snow | d8f94e1 | 2014-10-01 14:19:27 -0400 | [diff] [blame] | 172 | /** |
| 173 | * Returns the current mapping of how many units per bus |
| 174 | * a particular interface can support. |
| 175 | * |
| 176 | * A positive integer indicates n units per bus. |
| 177 | * 0 implies the mapping has not been established. |
| 178 | * -1 indicates an invalid BlockInterfaceType was given. |
| 179 | */ |
| 180 | int drive_get_max_devs(BlockInterfaceType type) |
| 181 | { |
| 182 | if (type >= IF_IDE && type < IF_COUNT) { |
| 183 | return if_max_devs[type]; |
| 184 | } |
| 185 | |
| 186 | return -1; |
| 187 | } |
| 188 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 189 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 190 | { |
| 191 | int max_devs = if_max_devs[type]; |
| 192 | return max_devs ? index / max_devs : 0; |
| 193 | } |
| 194 | |
| 195 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 196 | { |
| 197 | int max_devs = if_max_devs[type]; |
| 198 | return max_devs ? index % max_devs : index; |
| 199 | } |
| 200 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 201 | QemuOpts *drive_def(const char *optstr) |
| 202 | { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 203 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 207 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 208 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 209 | QemuOpts *opts; |
| 210 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 211 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 212 | if (!opts) { |
| 213 | return NULL; |
| 214 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 215 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 216 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 217 | } |
| 218 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 219 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 220 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 221 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 222 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 223 | return opts; |
| 224 | } |
| 225 | |
| 226 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 227 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 228 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 229 | DriveInfo *dinfo; |
| 230 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 231 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 232 | dinfo = blk_legacy_dinfo(blk); |
| 233 | if (dinfo && dinfo->type == type |
| 234 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 235 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 236 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | return NULL; |
| 240 | } |
| 241 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 242 | void drive_check_orphaned(void) |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 243 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 244 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 245 | DriveInfo *dinfo; |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 246 | Location loc; |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 247 | bool orphans = false; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 248 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 249 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 250 | dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 251 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 252 | dinfo->type != IF_NONE) { |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 253 | loc_push_none(&loc); |
| 254 | qemu_opts_loc_restore(dinfo->opts); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 255 | error_report("machine type does not support" |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 256 | " if=%s,bus=%d,unit=%d", |
| 257 | if_name[dinfo->type], dinfo->bus, dinfo->unit); |
| 258 | loc_pop(&loc); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 259 | orphans = true; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 260 | } |
| 261 | } |
| 262 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 263 | if (orphans) { |
| 264 | exit(1); |
| 265 | } |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 266 | } |
| 267 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 268 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 269 | { |
| 270 | return drive_get(type, |
| 271 | drive_index_to_bus_id(type, index), |
| 272 | drive_index_to_unit_id(type, index)); |
| 273 | } |
| 274 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 275 | int drive_get_max_bus(BlockInterfaceType type) |
| 276 | { |
| 277 | int max_bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 278 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 279 | DriveInfo *dinfo; |
| 280 | |
| 281 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 282 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 283 | dinfo = blk_legacy_dinfo(blk); |
| 284 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 285 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 286 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 287 | } |
| 288 | return max_bus; |
| 289 | } |
| 290 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 291 | /* Get a block device. This should only be used for single-drive devices |
| 292 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 293 | appropriate bus. */ |
| 294 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 295 | { |
| 296 | static int next_block_unit[IF_COUNT]; |
| 297 | |
| 298 | return drive_get(type, 0, next_block_unit[type]++); |
| 299 | } |
| 300 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 301 | static void bdrv_format_print(void *opaque, const char *name) |
| 302 | { |
Markus Armbruster | 807105a | 2011-01-17 19:31:27 +0100 | [diff] [blame] | 303 | error_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 304 | } |
| 305 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 306 | typedef struct { |
| 307 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 308 | BlockDriverState *bs; |
| 309 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 310 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 311 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 312 | { |
| 313 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 314 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 315 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 316 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 317 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 318 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 319 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 320 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 321 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 322 | error_setg(errp, "'%s' invalid %s error action", |
| 323 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 324 | return -1; |
| 325 | } |
| 326 | } |
| 327 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 328 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
| 329 | Error **errp) |
| 330 | { |
| 331 | const QListEntry *entry; |
| 332 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { |
| 333 | switch (qobject_type(entry->value)) { |
| 334 | |
| 335 | case QTYPE_QSTRING: { |
| 336 | unsigned long long length; |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 337 | const char *str = qstring_get_str(qobject_to(QString, |
| 338 | entry->value)); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 339 | if (parse_uint_full(str, &length, 10) == 0 && |
| 340 | length > 0 && length <= UINT_MAX) { |
| 341 | block_acct_add_interval(stats, (unsigned) length); |
| 342 | } else { |
| 343 | error_setg(errp, "Invalid interval length: %s", str); |
| 344 | return false; |
| 345 | } |
| 346 | break; |
| 347 | } |
| 348 | |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 349 | case QTYPE_QNUM: { |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 350 | int64_t length = qnum_get_int(qobject_to(QNum, entry->value)); |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 351 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 352 | if (length > 0 && length <= UINT_MAX) { |
| 353 | block_acct_add_interval(stats, (unsigned) length); |
| 354 | } else { |
| 355 | error_setg(errp, "Invalid interval length: %" PRId64, length); |
| 356 | return false; |
| 357 | } |
| 358 | break; |
| 359 | } |
| 360 | |
| 361 | default: |
| 362 | error_setg(errp, "The specification of stats-intervals is invalid"); |
| 363 | return false; |
| 364 | } |
| 365 | } |
| 366 | return true; |
| 367 | } |
| 368 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 369 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 370 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 371 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 372 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 373 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 374 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 375 | { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 376 | Error *local_error = NULL; |
| 377 | const char *aio; |
| 378 | |
| 379 | if (bdrv_flags) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 380 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 381 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 382 | } |
| 383 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 384 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
| 385 | if (!strcmp(aio, "native")) { |
| 386 | *bdrv_flags |= BDRV_O_NATIVE_AIO; |
| 387 | } else if (!strcmp(aio, "threads")) { |
| 388 | /* this is the default */ |
| 389 | } else { |
| 390 | error_setg(errp, "invalid aio option"); |
| 391 | return; |
| 392 | } |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | /* disk I/O throttling */ |
| 397 | if (throttling_group) { |
| 398 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 399 | } |
| 400 | |
| 401 | if (throttle_cfg) { |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 402 | throttle_config_init(throttle_cfg); |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 403 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 404 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 405 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 406 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 407 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 408 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 409 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 410 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 411 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 412 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 413 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 414 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 415 | |
| 416 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 417 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 418 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 419 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 420 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 421 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 422 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 423 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 424 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 425 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 426 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 427 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 428 | |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 429 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
| 430 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); |
| 431 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = |
| 432 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); |
| 433 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = |
| 434 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); |
| 435 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = |
| 436 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); |
| 437 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = |
| 438 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); |
| 439 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = |
| 440 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); |
| 441 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 442 | throttle_cfg->op_size = |
| 443 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 444 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 445 | if (!throttle_is_valid(throttle_cfg, errp)) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 446 | return; |
| 447 | } |
| 448 | } |
| 449 | |
| 450 | if (detect_zeroes) { |
| 451 | *detect_zeroes = |
Marc-André Lureau | f7abe0e | 2017-08-24 10:46:10 +0200 | [diff] [blame] | 452 | qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 453 | qemu_opt_get(opts, "detect-zeroes"), |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 454 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 455 | &local_error); |
| 456 | if (local_error) { |
| 457 | error_propagate(errp, local_error); |
| 458 | return; |
| 459 | } |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 460 | } |
| 461 | } |
| 462 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 463 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 464 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 465 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 466 | { |
| 467 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 468 | int bdrv_flags = 0; |
| 469 | int on_read_error, on_write_error; |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 470 | bool account_invalid, account_failed; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 471 | bool writethrough, read_only; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 472 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 473 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 474 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 475 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 476 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 477 | QemuOpts *opts; |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 478 | QDict *interval_dict = NULL; |
| 479 | QList *interval_list = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 480 | const char *id; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 481 | BlockdevDetectZeroesOptions detect_zeroes = |
| 482 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
| 483 | const char *throttling_group = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 484 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 485 | /* Check common options by copying from bs_opts to opts, all other options |
| 486 | * stay in bs_opts for processing by bdrv_open(). */ |
| 487 | id = qdict_get_try_str(bs_opts, "id"); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 488 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 489 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 490 | error_propagate(errp, error); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 491 | goto err_no_opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 492 | } |
| 493 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 494 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 495 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 496 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 497 | goto early_err; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | if (id) { |
| 501 | qdict_del(bs_opts, "id"); |
| 502 | } |
| 503 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 504 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 505 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 506 | |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 507 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
| 508 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); |
| 509 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 510 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
| 511 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 512 | id = qemu_opts_id(opts); |
| 513 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 514 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
| 515 | qdict_array_split(interval_dict, &interval_list); |
| 516 | |
| 517 | if (qdict_size(interval_dict) != 0) { |
| 518 | error_setg(errp, "Invalid option stats-intervals.%s", |
| 519 | qdict_first(interval_dict)->key); |
| 520 | goto early_err; |
| 521 | } |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 522 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 523 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 524 | &detect_zeroes, &error); |
| 525 | if (error) { |
| 526 | error_propagate(errp, error); |
| 527 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 528 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 529 | |
| 530 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 531 | if (is_help_option(buf)) { |
| 532 | error_printf("Supported formats:"); |
| 533 | bdrv_iterate_format(bdrv_format_print, NULL); |
| 534 | error_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 535 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 536 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 537 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 538 | if (qdict_haskey(bs_opts, "driver")) { |
| 539 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 540 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 541 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 542 | qdict_put_str(bs_opts, "driver", buf); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 543 | } |
| 544 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 545 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 546 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 547 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 548 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 549 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 550 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 551 | } |
| 552 | } |
| 553 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 554 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 555 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 556 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 557 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 558 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 559 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 560 | } |
| 561 | } |
| 562 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 563 | if (snapshot) { |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 564 | bdrv_flags |= BDRV_O_SNAPSHOT; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 565 | } |
| 566 | |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 567 | read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); |
| 568 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 569 | /* init */ |
Kevin Wolf | 39c4ae9 | 2015-11-13 14:45:42 +0100 | [diff] [blame] | 570 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 571 | BlockBackendRootState *blk_rs; |
| 572 | |
Kevin Wolf | 6d0eb64 | 2017-01-20 17:07:26 +0100 | [diff] [blame] | 573 | blk = blk_new(0, BLK_PERM_ALL); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 574 | blk_rs = blk_get_root_state(blk); |
| 575 | blk_rs->open_flags = bdrv_flags; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 576 | blk_rs->read_only = read_only; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 577 | blk_rs->detect_zeroes = detect_zeroes; |
| 578 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 579 | QDECREF(bs_opts); |
| 580 | } else { |
| 581 | if (file && !*file) { |
| 582 | file = NULL; |
| 583 | } |
| 584 | |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 585 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 586 | * with other callers) rather than what we want as the real defaults. |
| 587 | * Apply the defaults here instead. */ |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 588 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 589 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 590 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, |
| 591 | read_only ? "on" : "off"); |
Kevin Wolf | 72e775c | 2016-03-15 14:34:37 +0100 | [diff] [blame] | 592 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 593 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 594 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 595 | bdrv_flags |= BDRV_O_INACTIVE; |
| 596 | } |
| 597 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 598 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 599 | if (!blk) { |
| 600 | goto err_no_bs_opts; |
| 601 | } |
| 602 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 603 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 604 | bs->detect_zeroes = detect_zeroes; |
| 605 | |
Paolo Bonzini | 9caa6f3 | 2017-06-05 14:39:07 +0200 | [diff] [blame] | 606 | block_acct_setup(blk_get_stats(blk), account_invalid, account_failed); |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 607 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 608 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
| 609 | blk_unref(blk); |
| 610 | blk = NULL; |
| 611 | goto err_no_bs_opts; |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 612 | } |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 613 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 614 | |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 615 | /* disk I/O throttling */ |
| 616 | if (throttle_enabled(&cfg)) { |
| 617 | if (!throttling_group) { |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 618 | throttling_group = id; |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 619 | } |
| 620 | blk_io_limits_enable(blk, throttling_group); |
| 621 | blk_set_io_limits(blk, &cfg); |
| 622 | } |
| 623 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 624 | blk_set_enable_write_cache(blk, !writethrough); |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 625 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 626 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 627 | if (!monitor_add_blk(blk, id, errp)) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 628 | blk_unref(blk); |
| 629 | blk = NULL; |
| 630 | goto err_no_bs_opts; |
| 631 | } |
| 632 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 633 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 634 | qemu_opts_del(opts); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 635 | QDECREF(interval_dict); |
| 636 | QDECREF(interval_list); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 637 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 638 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 639 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 640 | qemu_opts_del(opts); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 641 | QDECREF(interval_dict); |
| 642 | QDECREF(interval_list); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 643 | err_no_opts: |
| 644 | QDECREF(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 645 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 646 | } |
| 647 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 648 | /* Takes the ownership of bs_opts */ |
| 649 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
| 650 | { |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 651 | int bdrv_flags = 0; |
| 652 | |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 653 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 654 | * with other callers) rather than what we want as the real defaults. |
| 655 | * Apply the defaults here instead. */ |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 656 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 657 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 658 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off"); |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 659 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 660 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 661 | bdrv_flags |= BDRV_O_INACTIVE; |
| 662 | } |
| 663 | |
Kevin Wolf | 74e1ae7 | 2016-09-20 20:48:52 +0200 | [diff] [blame] | 664 | return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 665 | } |
| 666 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 667 | void blockdev_close_all_bdrv_states(void) |
| 668 | { |
| 669 | BlockDriverState *bs, *next_bs; |
| 670 | |
| 671 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { |
| 672 | AioContext *ctx = bdrv_get_aio_context(bs); |
| 673 | |
| 674 | aio_context_acquire(ctx); |
| 675 | bdrv_unref(bs); |
| 676 | aio_context_release(ctx); |
| 677 | } |
| 678 | } |
| 679 | |
Max Reitz | 262b4e8 | 2016-03-16 19:54:41 +0100 | [diff] [blame] | 680 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
| 681 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) |
| 682 | { |
| 683 | return bs ? QTAILQ_NEXT(bs, monitor_list) |
| 684 | : QTAILQ_FIRST(&monitor_bdrv_states); |
| 685 | } |
| 686 | |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 687 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
| 688 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 689 | { |
| 690 | const char *value; |
| 691 | |
| 692 | value = qemu_opt_get(opts, from); |
| 693 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 694 | if (qemu_opt_find(opts, to)) { |
| 695 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 696 | "same time", to, from); |
| 697 | return; |
| 698 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 699 | } |
| 700 | |
| 701 | /* rename all items in opts */ |
| 702 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 703 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 704 | qemu_opt_unset(opts, from); |
| 705 | } |
| 706 | } |
| 707 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 708 | QemuOptsList qemu_legacy_drive_opts = { |
| 709 | .name = "drive", |
| 710 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 711 | .desc = { |
| 712 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 713 | .name = "bus", |
| 714 | .type = QEMU_OPT_NUMBER, |
| 715 | .help = "bus number", |
| 716 | },{ |
| 717 | .name = "unit", |
| 718 | .type = QEMU_OPT_NUMBER, |
| 719 | .help = "unit number (i.e. lun for scsi)", |
| 720 | },{ |
| 721 | .name = "index", |
| 722 | .type = QEMU_OPT_NUMBER, |
| 723 | .help = "index number", |
| 724 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 725 | .name = "media", |
| 726 | .type = QEMU_OPT_STRING, |
| 727 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 728 | },{ |
| 729 | .name = "if", |
| 730 | .type = QEMU_OPT_STRING, |
| 731 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 732 | },{ |
| 733 | .name = "cyls", |
| 734 | .type = QEMU_OPT_NUMBER, |
| 735 | .help = "number of cylinders (ide disk geometry)", |
| 736 | },{ |
| 737 | .name = "heads", |
| 738 | .type = QEMU_OPT_NUMBER, |
| 739 | .help = "number of heads (ide disk geometry)", |
| 740 | },{ |
| 741 | .name = "secs", |
| 742 | .type = QEMU_OPT_NUMBER, |
| 743 | .help = "number of sectors (ide disk geometry)", |
| 744 | },{ |
| 745 | .name = "trans", |
| 746 | .type = QEMU_OPT_STRING, |
| 747 | .help = "chs translation (auto, lba, none)", |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 748 | },{ |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 749 | .name = "addr", |
| 750 | .type = QEMU_OPT_STRING, |
| 751 | .help = "pci address (virtio only)", |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 752 | },{ |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 753 | .name = "serial", |
| 754 | .type = QEMU_OPT_STRING, |
| 755 | .help = "disk serial number", |
| 756 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 757 | .name = "file", |
| 758 | .type = QEMU_OPT_STRING, |
| 759 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 760 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 761 | |
| 762 | /* Options that are passed on, but have special semantics with -drive */ |
| 763 | { |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 764 | .name = BDRV_OPT_READ_ONLY, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 765 | .type = QEMU_OPT_BOOL, |
| 766 | .help = "open drive file as read-only", |
| 767 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 768 | .name = "rerror", |
| 769 | .type = QEMU_OPT_STRING, |
| 770 | .help = "read error action", |
| 771 | },{ |
| 772 | .name = "werror", |
| 773 | .type = QEMU_OPT_STRING, |
| 774 | .help = "write error action", |
| 775 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 776 | .name = "copy-on-read", |
| 777 | .type = QEMU_OPT_BOOL, |
| 778 | .help = "copy read data from backing file into image file", |
| 779 | }, |
| 780 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 781 | { /* end of list */ } |
| 782 | }, |
| 783 | }; |
| 784 | |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 785 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 786 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 787 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 788 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 789 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 790 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 791 | QemuOpts *legacy_opts; |
| 792 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 793 | BlockInterfaceType type; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 794 | int cyls, heads, secs, translation; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 795 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 796 | const char *devaddr; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 797 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 798 | bool read_only = false; |
| 799 | bool copy_on_read; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 800 | const char *serial; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 801 | const char *filename; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 802 | Error *local_err = NULL; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 803 | int i; |
Thomas Huth | c616f16 | 2017-05-12 12:33:49 +0200 | [diff] [blame] | 804 | const char *deprecated[] = { |
| 805 | "serial", "trans", "secs", "heads", "cyls", "addr" |
| 806 | }; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 807 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 808 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 809 | static const struct { |
| 810 | const char *from; |
| 811 | const char *to; |
| 812 | } opt_renames[] = { |
| 813 | { "iops", "throttling.iops-total" }, |
| 814 | { "iops_rd", "throttling.iops-read" }, |
| 815 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 816 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 817 | { "bps", "throttling.bps-total" }, |
| 818 | { "bps_rd", "throttling.bps-read" }, |
| 819 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 820 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 821 | { "iops_max", "throttling.iops-total-max" }, |
| 822 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 823 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 824 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 825 | { "bps_max", "throttling.bps-total-max" }, |
| 826 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 827 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 828 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 829 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 830 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 831 | { "group", "throttling.group" }, |
| 832 | |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 833 | { "readonly", BDRV_OPT_READ_ONLY }, |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 834 | }; |
| 835 | |
| 836 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 837 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
| 838 | &local_err); |
| 839 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 840 | error_report_err(local_err); |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 841 | return NULL; |
| 842 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 843 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 844 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 845 | value = qemu_opt_get(all_opts, "cache"); |
| 846 | if (value) { |
| 847 | int flags = 0; |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 848 | bool writethrough; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 849 | |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 850 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 851 | error_report("invalid cache option"); |
| 852 | return NULL; |
| 853 | } |
| 854 | |
| 855 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 856 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 857 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 858 | !writethrough, &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 859 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 860 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 861 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 862 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 863 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 864 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 865 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 866 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 867 | } |
| 868 | qemu_opt_unset(all_opts, "cache"); |
| 869 | } |
| 870 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 871 | /* Get a QDict for processing the options */ |
| 872 | bs_opts = qdict_new(); |
| 873 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 874 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 875 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 876 | &error_abort); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 877 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 878 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 879 | error_report_err(local_err); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 880 | goto fail; |
| 881 | } |
| 882 | |
Thomas Huth | c616f16 | 2017-05-12 12:33:49 +0200 | [diff] [blame] | 883 | /* Other deprecated options */ |
| 884 | if (!qtest_enabled()) { |
| 885 | for (i = 0; i < ARRAY_SIZE(deprecated); i++) { |
| 886 | if (qemu_opt_get(legacy_opts, deprecated[i]) != NULL) { |
| 887 | error_report("'%s' is deprecated, please use the corresponding " |
| 888 | "option of '-device' instead", deprecated[i]); |
| 889 | } |
| 890 | } |
| 891 | } |
| 892 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 893 | /* Media type */ |
| 894 | value = qemu_opt_get(legacy_opts, "media"); |
| 895 | if (value) { |
| 896 | if (!strcmp(value, "disk")) { |
| 897 | media = MEDIA_DISK; |
| 898 | } else if (!strcmp(value, "cdrom")) { |
| 899 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 900 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 901 | } else { |
| 902 | error_report("'%s' invalid media", value); |
| 903 | goto fail; |
| 904 | } |
| 905 | } |
| 906 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 907 | /* copy-on-read is disabled with a warning for read-only devices */ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 908 | read_only |= qemu_opt_get_bool(legacy_opts, BDRV_OPT_READ_ONLY, false); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 909 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 910 | |
| 911 | if (read_only && copy_on_read) { |
Alistair Francis | 3dc6f86 | 2017-07-12 06:57:41 -0700 | [diff] [blame] | 912 | warn_report("disabling copy-on-read on read-only drive"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 913 | copy_on_read = false; |
| 914 | } |
| 915 | |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 916 | qdict_put_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); |
| 917 | qdict_put_str(bs_opts, "copy-on-read", copy_on_read ? "on" : "off"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 918 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 919 | /* Controller type */ |
| 920 | value = qemu_opt_get(legacy_opts, "if"); |
| 921 | if (value) { |
| 922 | for (type = 0; |
| 923 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 924 | type++) { |
| 925 | } |
| 926 | if (type == IF_COUNT) { |
| 927 | error_report("unsupported bus type '%s'", value); |
| 928 | goto fail; |
| 929 | } |
| 930 | } else { |
| 931 | type = block_default_type; |
| 932 | } |
| 933 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 934 | /* Geometry */ |
| 935 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); |
| 936 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); |
| 937 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); |
| 938 | |
| 939 | if (cyls || heads || secs) { |
| 940 | if (cyls < 1) { |
| 941 | error_report("invalid physical cyls number"); |
| 942 | goto fail; |
| 943 | } |
| 944 | if (heads < 1) { |
| 945 | error_report("invalid physical heads number"); |
| 946 | goto fail; |
| 947 | } |
| 948 | if (secs < 1) { |
| 949 | error_report("invalid physical secs number"); |
| 950 | goto fail; |
| 951 | } |
| 952 | } |
| 953 | |
| 954 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 955 | value = qemu_opt_get(legacy_opts, "trans"); |
| 956 | if (value != NULL) { |
| 957 | if (!cyls) { |
| 958 | error_report("'%s' trans must be used with cyls, heads and secs", |
| 959 | value); |
| 960 | goto fail; |
| 961 | } |
| 962 | if (!strcmp(value, "none")) { |
| 963 | translation = BIOS_ATA_TRANSLATION_NONE; |
| 964 | } else if (!strcmp(value, "lba")) { |
| 965 | translation = BIOS_ATA_TRANSLATION_LBA; |
Paolo Bonzini | f31c41f | 2014-02-08 11:01:54 +0100 | [diff] [blame] | 966 | } else if (!strcmp(value, "large")) { |
| 967 | translation = BIOS_ATA_TRANSLATION_LARGE; |
| 968 | } else if (!strcmp(value, "rechs")) { |
| 969 | translation = BIOS_ATA_TRANSLATION_RECHS; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 970 | } else if (!strcmp(value, "auto")) { |
| 971 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 972 | } else { |
| 973 | error_report("'%s' invalid translation type", value); |
| 974 | goto fail; |
| 975 | } |
| 976 | } |
| 977 | |
| 978 | if (media == MEDIA_CDROM) { |
| 979 | if (cyls || secs || heads) { |
| 980 | error_report("CHS can't be set with media=cdrom"); |
| 981 | goto fail; |
| 982 | } |
| 983 | } |
| 984 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 985 | /* Device address specified by bus/unit or index. |
| 986 | * If none was specified, try to find the first free one. */ |
| 987 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 988 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 989 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 990 | |
| 991 | max_devs = if_max_devs[type]; |
| 992 | |
| 993 | if (index != -1) { |
| 994 | if (bus_id != 0 || unit_id != -1) { |
| 995 | error_report("index cannot be used with bus and unit"); |
| 996 | goto fail; |
| 997 | } |
| 998 | bus_id = drive_index_to_bus_id(type, index); |
| 999 | unit_id = drive_index_to_unit_id(type, index); |
| 1000 | } |
| 1001 | |
| 1002 | if (unit_id == -1) { |
| 1003 | unit_id = 0; |
| 1004 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 1005 | unit_id++; |
| 1006 | if (max_devs && unit_id >= max_devs) { |
| 1007 | unit_id -= max_devs; |
| 1008 | bus_id++; |
| 1009 | } |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | if (max_devs && unit_id >= max_devs) { |
| 1014 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); |
| 1015 | goto fail; |
| 1016 | } |
| 1017 | |
| 1018 | if (drive_get(type, bus_id, unit_id) != NULL) { |
| 1019 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
| 1020 | bus_id, unit_id, index); |
| 1021 | goto fail; |
| 1022 | } |
| 1023 | |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1024 | /* Serial number */ |
| 1025 | serial = qemu_opt_get(legacy_opts, "serial"); |
| 1026 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1027 | /* no id supplied -> create one */ |
| 1028 | if (qemu_opts_id(all_opts) == NULL) { |
| 1029 | char *new_id; |
| 1030 | const char *mediastr = ""; |
| 1031 | if (type == IF_IDE || type == IF_SCSI) { |
| 1032 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 1033 | } |
| 1034 | if (max_devs) { |
| 1035 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 1036 | mediastr, unit_id); |
| 1037 | } else { |
| 1038 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 1039 | mediastr, unit_id); |
| 1040 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1041 | qdict_put_str(bs_opts, "id", new_id); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1042 | g_free(new_id); |
| 1043 | } |
| 1044 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1045 | /* Add virtio block device */ |
| 1046 | devaddr = qemu_opt_get(legacy_opts, "addr"); |
| 1047 | if (devaddr && type != IF_VIRTIO) { |
| 1048 | error_report("addr is not supported by this bus type"); |
| 1049 | goto fail; |
| 1050 | } |
| 1051 | |
| 1052 | if (type == IF_VIRTIO) { |
| 1053 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 1054 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 1055 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1056 | if (arch_type == QEMU_ARCH_S390X) { |
Alexander Graf | 1f68f1d | 2015-06-16 23:06:33 +0200 | [diff] [blame] | 1057 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1058 | } else { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1059 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1060 | } |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1061 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 1062 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1063 | if (devaddr) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1064 | qemu_opt_set(devopts, "addr", devaddr, &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1065 | } |
| 1066 | } |
| 1067 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 1068 | filename = qemu_opt_get(legacy_opts, "file"); |
| 1069 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1070 | /* Check werror/rerror compatibility with if=... */ |
| 1071 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 1072 | if (werror != NULL) { |
| 1073 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 1074 | type != IF_NONE) { |
| 1075 | error_report("werror is not supported by this bus type"); |
| 1076 | goto fail; |
| 1077 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1078 | qdict_put_str(bs_opts, "werror", werror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1079 | } |
| 1080 | |
| 1081 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 1082 | if (rerror != NULL) { |
| 1083 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 1084 | type != IF_NONE) { |
| 1085 | error_report("rerror is not supported by this bus type"); |
| 1086 | goto fail; |
| 1087 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1088 | qdict_put_str(bs_opts, "rerror", rerror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1089 | } |
| 1090 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1091 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1092 | blk = blockdev_init(filename, bs_opts, &local_err); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1093 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1094 | if (!blk) { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1095 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 1096 | error_report_err(local_err); |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 1097 | } |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1098 | goto fail; |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 1099 | } else { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1100 | assert(!local_err); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1101 | } |
| 1102 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1103 | /* Create legacy DriveInfo */ |
| 1104 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1105 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1106 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 1107 | dinfo->cyls = cyls; |
| 1108 | dinfo->heads = heads; |
| 1109 | dinfo->secs = secs; |
| 1110 | dinfo->trans = translation; |
| 1111 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1112 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1113 | dinfo->bus = bus_id; |
| 1114 | dinfo->unit = unit_id; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1115 | dinfo->devaddr = devaddr; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1116 | dinfo->serial = g_strdup(serial); |
| 1117 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1118 | blk_set_legacy_dinfo(blk, dinfo); |
| 1119 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1120 | switch(type) { |
| 1121 | case IF_IDE: |
| 1122 | case IF_SCSI: |
| 1123 | case IF_XEN: |
| 1124 | case IF_NONE: |
| 1125 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1126 | break; |
| 1127 | default: |
| 1128 | break; |
| 1129 | } |
| 1130 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1131 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1132 | qemu_opts_del(legacy_opts); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1133 | QDECREF(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1134 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1135 | } |
| 1136 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1137 | static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) |
| 1138 | { |
| 1139 | BlockDriverState *bs; |
| 1140 | |
| 1141 | bs = bdrv_lookup_bs(name, name, errp); |
| 1142 | if (bs == NULL) { |
| 1143 | return NULL; |
| 1144 | } |
| 1145 | |
| 1146 | if (!bdrv_is_root_node(bs)) { |
| 1147 | error_setg(errp, "Need a root block node"); |
| 1148 | return NULL; |
| 1149 | } |
| 1150 | |
| 1151 | if (!bdrv_is_inserted(bs)) { |
| 1152 | error_setg(errp, "Device has no medium"); |
| 1153 | return NULL; |
| 1154 | } |
| 1155 | |
| 1156 | return bs; |
| 1157 | } |
| 1158 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 1159 | static BlockBackend *qmp_get_blk(const char *blk_name, const char *qdev_id, |
| 1160 | Error **errp) |
| 1161 | { |
| 1162 | BlockBackend *blk; |
| 1163 | |
| 1164 | if (!blk_name == !qdev_id) { |
| 1165 | error_setg(errp, "Need exactly one of 'device' and 'id'"); |
| 1166 | return NULL; |
| 1167 | } |
| 1168 | |
| 1169 | if (qdev_id) { |
| 1170 | blk = blk_by_qdev_id(qdev_id, errp); |
| 1171 | } else { |
| 1172 | blk = blk_by_name(blk_name); |
| 1173 | if (blk == NULL) { |
| 1174 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1175 | "Device '%s' not found", blk_name); |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | return blk; |
| 1180 | } |
| 1181 | |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame] | 1182 | void hmp_commit(Monitor *mon, const QDict *qdict) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1183 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1184 | const char *device = qdict_get_str(qdict, "device"); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1185 | BlockBackend *blk; |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 1186 | int ret; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1187 | |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1188 | if (!strcmp(device, "all")) { |
Max Reitz | da31d59 | 2016-03-16 19:54:32 +0100 | [diff] [blame] | 1189 | ret = blk_commit_all(); |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1190 | } else { |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1191 | BlockDriverState *bs; |
| 1192 | AioContext *aio_context; |
| 1193 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1194 | blk = blk_by_name(device); |
| 1195 | if (!blk) { |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1196 | monitor_printf(mon, "Device '%s' not found\n", device); |
Markus Armbruster | ac59eb9 | 2010-06-02 18:55:19 +0200 | [diff] [blame] | 1197 | return; |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1198 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1199 | if (!blk_is_available(blk)) { |
| 1200 | monitor_printf(mon, "Device '%s' has no medium\n", device); |
| 1201 | return; |
| 1202 | } |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1203 | |
| 1204 | bs = blk_bs(blk); |
| 1205 | aio_context = bdrv_get_aio_context(bs); |
| 1206 | aio_context_acquire(aio_context); |
| 1207 | |
| 1208 | ret = bdrv_commit(bs); |
| 1209 | |
| 1210 | aio_context_release(aio_context); |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1211 | } |
| 1212 | if (ret < 0) { |
| 1213 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, |
| 1214 | strerror(-ret)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1215 | } |
| 1216 | } |
| 1217 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1218 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1219 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1220 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1221 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1222 | list.value = action; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1223 | list.next = NULL; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1224 | qmp_transaction(&list, false, NULL, errp); |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1225 | } |
| 1226 | |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1227 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
| 1228 | bool has_node_name, const char *node_name, |
| 1229 | const char *snapshot_file, |
| 1230 | bool has_snapshot_node_name, |
| 1231 | const char *snapshot_node_name, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 1232 | bool has_format, const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1233 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1234 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1235 | BlockdevSnapshotSync snapshot = { |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1236 | .has_device = has_device, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1237 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1238 | .has_node_name = has_node_name, |
| 1239 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1240 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1241 | .has_snapshot_node_name = has_snapshot_node_name, |
| 1242 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1243 | .has_format = has_format, |
| 1244 | .format = (char *) format, |
| 1245 | .has_mode = has_mode, |
| 1246 | .mode = mode, |
| 1247 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1248 | TransactionAction action = { |
| 1249 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1250 | .u.blockdev_snapshot_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1251 | }; |
| 1252 | blockdev_do_action(&action, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1253 | } |
| 1254 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1255 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1256 | Error **errp) |
| 1257 | { |
| 1258 | BlockdevSnapshot snapshot_data = { |
| 1259 | .node = (char *) node, |
| 1260 | .overlay = (char *) overlay |
| 1261 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1262 | TransactionAction action = { |
| 1263 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1264 | .u.blockdev_snapshot.data = &snapshot_data, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1265 | }; |
| 1266 | blockdev_do_action(&action, errp); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1267 | } |
| 1268 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1269 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1270 | const char *name, |
| 1271 | Error **errp) |
| 1272 | { |
| 1273 | BlockdevSnapshotInternal snapshot = { |
| 1274 | .device = (char *) device, |
| 1275 | .name = (char *) name |
| 1276 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1277 | TransactionAction action = { |
| 1278 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1279 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1280 | }; |
| 1281 | blockdev_do_action(&action, errp); |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1282 | } |
| 1283 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1284 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 1285 | bool has_id, |
| 1286 | const char *id, |
| 1287 | bool has_name, |
| 1288 | const char *name, |
| 1289 | Error **errp) |
| 1290 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1291 | BlockDriverState *bs; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1292 | AioContext *aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1293 | QEMUSnapshotInfo sn; |
| 1294 | Error *local_err = NULL; |
| 1295 | SnapshotInfo *info = NULL; |
| 1296 | int ret; |
| 1297 | |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1298 | bs = qmp_get_root_bs(device, errp); |
| 1299 | if (!bs) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1300 | return NULL; |
| 1301 | } |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1302 | aio_context = bdrv_get_aio_context(bs); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1303 | aio_context_acquire(aio_context); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1304 | |
| 1305 | if (!has_id) { |
| 1306 | id = NULL; |
| 1307 | } |
| 1308 | |
| 1309 | if (!has_name) { |
| 1310 | name = NULL; |
| 1311 | } |
| 1312 | |
| 1313 | if (!id && !name) { |
| 1314 | error_setg(errp, "Name or id must be provided"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1315 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1316 | } |
| 1317 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1318 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
| 1319 | goto out_aio_context; |
| 1320 | } |
| 1321 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1322 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1323 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1324 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1325 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1326 | } |
| 1327 | if (!ret) { |
| 1328 | error_setg(errp, |
| 1329 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1330 | "device '%s'", |
| 1331 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1332 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1333 | } |
| 1334 | |
| 1335 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1336 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1337 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1338 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1339 | } |
| 1340 | |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1341 | aio_context_release(aio_context); |
| 1342 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1343 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1344 | info->id = g_strdup(sn.id_str); |
| 1345 | info->name = g_strdup(sn.name); |
| 1346 | info->date_nsec = sn.date_nsec; |
| 1347 | info->date_sec = sn.date_sec; |
| 1348 | info->vm_state_size = sn.vm_state_size; |
| 1349 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1350 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
| 1351 | |
| 1352 | return info; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1353 | |
| 1354 | out_aio_context: |
| 1355 | aio_context_release(aio_context); |
| 1356 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1357 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1358 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1359 | /** |
| 1360 | * block_dirty_bitmap_lookup: |
| 1361 | * Return a dirty bitmap (if present), after validating |
| 1362 | * the node reference and bitmap names. |
| 1363 | * |
| 1364 | * @node: The name of the BDS node to search for bitmaps |
| 1365 | * @name: The name of the bitmap to search for |
| 1366 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. |
| 1367 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. |
| 1368 | * @errp: Output pointer for error information. Can be NULL. |
| 1369 | * |
| 1370 | * @return: A bitmap object on success, or NULL on failure. |
| 1371 | */ |
| 1372 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, |
| 1373 | const char *name, |
| 1374 | BlockDriverState **pbs, |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1375 | Error **errp) |
| 1376 | { |
| 1377 | BlockDriverState *bs; |
| 1378 | BdrvDirtyBitmap *bitmap; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1379 | |
| 1380 | if (!node) { |
| 1381 | error_setg(errp, "Node cannot be NULL"); |
| 1382 | return NULL; |
| 1383 | } |
| 1384 | if (!name) { |
| 1385 | error_setg(errp, "Bitmap name cannot be NULL"); |
| 1386 | return NULL; |
| 1387 | } |
| 1388 | bs = bdrv_lookup_bs(node, node, NULL); |
| 1389 | if (!bs) { |
| 1390 | error_setg(errp, "Node '%s' not found", node); |
| 1391 | return NULL; |
| 1392 | } |
| 1393 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1394 | bitmap = bdrv_find_dirty_bitmap(bs, name); |
| 1395 | if (!bitmap) { |
| 1396 | error_setg(errp, "Dirty bitmap '%s' not found", name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 1397 | return NULL; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1398 | } |
| 1399 | |
| 1400 | if (pbs) { |
| 1401 | *pbs = bs; |
| 1402 | } |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1403 | |
| 1404 | return bitmap; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1405 | } |
| 1406 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1407 | /* New and old BlockDriverState structs for atomic group operations */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1408 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1409 | typedef struct BlkActionState BlkActionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1410 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1411 | /** |
| 1412 | * BlkActionOps: |
| 1413 | * Table of operations that define an Action. |
| 1414 | * |
| 1415 | * @instance_size: Size of state struct, in bytes. |
| 1416 | * @prepare: Prepare the work, must NOT be NULL. |
| 1417 | * @commit: Commit the changes, can be NULL. |
| 1418 | * @abort: Abort the changes on fail, can be NULL. |
| 1419 | * @clean: Clean up resources after all transaction actions have called |
| 1420 | * commit() or abort(). Can be NULL. |
| 1421 | * |
| 1422 | * Only prepare() may fail. In a single transaction, only one of commit() or |
| 1423 | * abort() will be called. clean() will always be called if it is present. |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1424 | */ |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1425 | typedef struct BlkActionOps { |
| 1426 | size_t instance_size; |
| 1427 | void (*prepare)(BlkActionState *common, Error **errp); |
| 1428 | void (*commit)(BlkActionState *common); |
| 1429 | void (*abort)(BlkActionState *common); |
| 1430 | void (*clean)(BlkActionState *common); |
| 1431 | } BlkActionOps; |
| 1432 | |
| 1433 | /** |
| 1434 | * BlkActionState: |
| 1435 | * Describes one Action's state within a Transaction. |
| 1436 | * |
| 1437 | * @action: QAPI-defined enum identifying which Action to perform. |
| 1438 | * @ops: Table of ActionOps this Action can perform. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1439 | * @block_job_txn: Transaction which this action belongs to. |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1440 | * @entry: List membership for all Actions in this Transaction. |
| 1441 | * |
| 1442 | * This structure must be arranged as first member in a subclassed type, |
| 1443 | * assuming that the compiler will also arrange it to the same offsets as the |
| 1444 | * base class. |
| 1445 | */ |
| 1446 | struct BlkActionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1447 | TransactionAction *action; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1448 | const BlkActionOps *ops; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1449 | BlockJobTxn *block_job_txn; |
| 1450 | TransactionProperties *txn_props; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1451 | QSIMPLEQ_ENTRY(BlkActionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1452 | }; |
| 1453 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1454 | /* internal snapshot private data */ |
| 1455 | typedef struct InternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1456 | BlkActionState common; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1457 | BlockDriverState *bs; |
| 1458 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1459 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1460 | } InternalSnapshotState; |
| 1461 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1462 | |
| 1463 | static int action_check_completion_mode(BlkActionState *s, Error **errp) |
| 1464 | { |
| 1465 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 1466 | error_setg(errp, |
| 1467 | "Action '%s' does not support Transaction property " |
| 1468 | "completion-mode = %s", |
Markus Armbruster | 977c736 | 2017-08-24 10:46:08 +0200 | [diff] [blame] | 1469 | TransactionActionKind_str(s->action->type), |
| 1470 | ActionCompletionMode_str(s->txn_props->completion_mode)); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1471 | return -1; |
| 1472 | } |
| 1473 | return 0; |
| 1474 | } |
| 1475 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1476 | static void internal_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1477 | Error **errp) |
| 1478 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1479 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1480 | const char *device; |
| 1481 | const char *name; |
| 1482 | BlockDriverState *bs; |
| 1483 | QEMUSnapshotInfo old_sn, *sn; |
| 1484 | bool ret; |
| 1485 | qemu_timeval tv; |
| 1486 | BlockdevSnapshotInternal *internal; |
| 1487 | InternalSnapshotState *state; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1488 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1489 | int ret1; |
| 1490 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1491 | g_assert(common->action->type == |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1492 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1493 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1494 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1495 | |
| 1496 | /* 1. parse input */ |
| 1497 | device = internal->device; |
| 1498 | name = internal->name; |
| 1499 | |
| 1500 | /* 2. check for validation */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1501 | if (action_check_completion_mode(common, errp) < 0) { |
| 1502 | return; |
| 1503 | } |
| 1504 | |
Kevin Wolf | 75dfd40 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1505 | bs = qmp_get_root_bs(device, errp); |
| 1506 | if (!bs) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1507 | return; |
| 1508 | } |
| 1509 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1510 | aio_context = bdrv_get_aio_context(bs); |
| 1511 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1512 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1513 | state->bs = bs; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1514 | |
| 1515 | /* Paired with .clean() */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1516 | bdrv_drained_begin(bs); |
| 1517 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1518 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1519 | goto out; |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1520 | } |
| 1521 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1522 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1523 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1524 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1528 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1529 | "does not support internal snapshots", |
| 1530 | bs->drv->format_name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1531 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1532 | } |
| 1533 | |
| 1534 | if (!strlen(name)) { |
| 1535 | error_setg(errp, "Name is empty"); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1536 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1537 | } |
| 1538 | |
| 1539 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1540 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1541 | &local_err); |
| 1542 | if (local_err) { |
| 1543 | error_propagate(errp, local_err); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1544 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1545 | } else if (ret) { |
| 1546 | error_setg(errp, |
| 1547 | "Snapshot with name '%s' already exists on device '%s'", |
| 1548 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1549 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1550 | } |
| 1551 | |
| 1552 | /* 3. take the snapshot */ |
| 1553 | sn = &state->sn; |
| 1554 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1555 | qemu_gettimeofday(&tv); |
| 1556 | sn->date_sec = tv.tv_sec; |
| 1557 | sn->date_nsec = tv.tv_usec * 1000; |
| 1558 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1559 | |
| 1560 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1561 | if (ret1 < 0) { |
| 1562 | error_setg_errno(errp, -ret1, |
| 1563 | "Failed to create snapshot '%s' on device '%s'", |
| 1564 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1565 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1566 | } |
| 1567 | |
| 1568 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1569 | state->created = true; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1570 | |
| 1571 | out: |
| 1572 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1573 | } |
| 1574 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1575 | static void internal_snapshot_abort(BlkActionState *common) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1576 | { |
| 1577 | InternalSnapshotState *state = |
| 1578 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1579 | BlockDriverState *bs = state->bs; |
| 1580 | QEMUSnapshotInfo *sn = &state->sn; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1581 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1582 | Error *local_error = NULL; |
| 1583 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1584 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1585 | return; |
| 1586 | } |
| 1587 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1588 | aio_context = bdrv_get_aio_context(state->bs); |
| 1589 | aio_context_acquire(aio_context); |
| 1590 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1591 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { |
Markus Armbruster | c29b77f | 2015-12-18 16:35:14 +0100 | [diff] [blame] | 1592 | error_reportf_err(local_error, |
| 1593 | "Failed to delete snapshot with id '%s' and " |
| 1594 | "name '%s' on device '%s' in abort: ", |
| 1595 | sn->id_str, sn->name, |
| 1596 | bdrv_get_device_name(bs)); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1597 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1598 | |
| 1599 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1600 | } |
| 1601 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1602 | static void internal_snapshot_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1603 | { |
| 1604 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, |
| 1605 | common, common); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1606 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1607 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1608 | if (!state->bs) { |
| 1609 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1610 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1611 | |
| 1612 | aio_context = bdrv_get_aio_context(state->bs); |
| 1613 | aio_context_acquire(aio_context); |
| 1614 | |
| 1615 | bdrv_drained_end(state->bs); |
| 1616 | |
| 1617 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1618 | } |
| 1619 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1620 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1621 | typedef struct ExternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1622 | BlkActionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1623 | BlockDriverState *old_bs; |
| 1624 | BlockDriverState *new_bs; |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1625 | bool overlay_appended; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1626 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1627 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1628 | static void external_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1629 | Error **errp) |
| 1630 | { |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1631 | int flags = 0; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1632 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1633 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1634 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1635 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1636 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1637 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1638 | const char *snapshot_ref; |
| 1639 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1640 | const char *new_image_file; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1641 | ExternalSnapshotState *state = |
| 1642 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1643 | TransactionAction *action = common->action; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1644 | AioContext *aio_context; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1645 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1646 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1647 | * purpose but a different set of parameters */ |
| 1648 | switch (action->type) { |
| 1649 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1650 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1651 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1652 | device = s->node; |
| 1653 | node_name = s->node; |
| 1654 | new_image_file = NULL; |
| 1655 | snapshot_ref = s->overlay; |
| 1656 | } |
| 1657 | break; |
| 1658 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1659 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1660 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1661 | device = s->has_device ? s->device : NULL; |
| 1662 | node_name = s->has_node_name ? s->node_name : NULL; |
| 1663 | new_image_file = s->snapshot_file; |
| 1664 | snapshot_ref = NULL; |
| 1665 | } |
| 1666 | break; |
| 1667 | default: |
| 1668 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1669 | } |
| 1670 | |
| 1671 | /* start processing */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1672 | if (action_check_completion_mode(common, errp) < 0) { |
| 1673 | return; |
| 1674 | } |
| 1675 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1676 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1677 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1678 | return; |
| 1679 | } |
| 1680 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1681 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1682 | aio_context_acquire(aio_context); |
| 1683 | |
| 1684 | /* Paired with .clean() */ |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1685 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1686 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1687 | if (!bdrv_is_inserted(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1688 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1689 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1690 | } |
| 1691 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1692 | if (bdrv_op_is_blocked(state->old_bs, |
| 1693 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1694 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1695 | } |
| 1696 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1697 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1698 | if (bdrv_flush(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1699 | error_setg(errp, QERR_IO_ERROR); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1700 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1701 | } |
| 1702 | } |
| 1703 | |
Benoît Canet | 212a5a8 | 2014-01-23 21:31:36 +0100 | [diff] [blame] | 1704 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1705 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1706 | goto out; |
Benoît Canet | f6186f4 | 2013-10-02 14:33:48 +0200 | [diff] [blame] | 1707 | } |
| 1708 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1709 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1710 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1711 | const char *format = s->has_format ? s->format : "qcow2"; |
| 1712 | enum NewImageMode mode; |
| 1713 | const char *snapshot_node_name = |
| 1714 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1715 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1716 | if (node_name && !snapshot_node_name) { |
| 1717 | error_setg(errp, "New snapshot node name missing"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1718 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1719 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1720 | |
| 1721 | if (snapshot_node_name && |
| 1722 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
| 1723 | error_setg(errp, "New snapshot node name already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1724 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1725 | } |
| 1726 | |
| 1727 | flags = state->old_bs->open_flags; |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 1728 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_COPY_ON_READ); |
| 1729 | flags |= BDRV_O_NO_BACKING; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1730 | |
| 1731 | /* create new image w/backing file */ |
| 1732 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1733 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1734 | int64_t size = bdrv_getlength(state->old_bs); |
| 1735 | if (size < 0) { |
| 1736 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1737 | goto out; |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1738 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1739 | bdrv_img_create(new_image_file, format, |
| 1740 | state->old_bs->filename, |
| 1741 | state->old_bs->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 1742 | NULL, size, flags, false, &local_err); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1743 | if (local_err) { |
| 1744 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1745 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1746 | } |
| 1747 | } |
| 1748 | |
| 1749 | options = qdict_new(); |
| 1750 | if (s->has_snapshot_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1751 | qdict_put_str(options, "node-name", snapshot_node_name); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1752 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1753 | qdict_put_str(options, "driver", format); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1754 | } |
| 1755 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1756 | state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, |
| 1757 | errp); |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1758 | /* We will manually add the backing_hd field to the bs later */ |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1759 | if (!state->new_bs) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1760 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1761 | } |
| 1762 | |
Kevin Wolf | 1f0c461 | 2016-03-22 18:38:44 +0100 | [diff] [blame] | 1763 | if (bdrv_has_blk(state->new_bs)) { |
Kevin Wolf | e467da7 | 2016-09-21 14:56:09 +0200 | [diff] [blame] | 1764 | error_setg(errp, "The snapshot is already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1765 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1766 | } |
| 1767 | |
| 1768 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, |
| 1769 | errp)) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1770 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1771 | } |
| 1772 | |
| 1773 | if (state->new_bs->backing != NULL) { |
| 1774 | error_setg(errp, "The snapshot already has a backing image"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1775 | goto out; |
Alberto Garcia | 08b24cf | 2015-11-03 12:32:35 +0200 | [diff] [blame] | 1776 | } |
| 1777 | |
| 1778 | if (!state->new_bs->drv->supports_backing) { |
| 1779 | error_setg(errp, "The snapshot does not support backing images"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1780 | goto out; |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1781 | } |
| 1782 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1783 | bdrv_set_aio_context(state->new_bs, aio_context); |
Fam Zheng | c26a5ab | 2017-04-07 14:54:09 +0800 | [diff] [blame] | 1784 | |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1785 | /* This removes our old bs and adds the new bs. This is an operation that |
| 1786 | * can fail, so we need to do it in .prepare; undoing it for abort is |
| 1787 | * always possible. */ |
| 1788 | bdrv_ref(state->new_bs); |
| 1789 | bdrv_append(state->new_bs, state->old_bs, &local_err); |
| 1790 | if (local_err) { |
| 1791 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1792 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1793 | } |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1794 | state->overlay_appended = true; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1795 | |
| 1796 | out: |
| 1797 | aio_context_release(aio_context); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1798 | } |
| 1799 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1800 | static void external_snapshot_commit(BlkActionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1801 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1802 | ExternalSnapshotState *state = |
| 1803 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1804 | AioContext *aio_context; |
| 1805 | |
| 1806 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1807 | aio_context_acquire(aio_context); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1808 | |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1809 | /* We don't need (or want) to use the transactional |
| 1810 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1811 | * don't want to abort all of them if one of them fails the reopen */ |
Paolo Bonzini | d3faa13 | 2017-06-05 14:38:50 +0200 | [diff] [blame] | 1812 | if (!atomic_read(&state->old_bs->copy_on_read)) { |
Kevin Wolf | 4c84498 | 2016-02-29 13:12:26 +0100 | [diff] [blame] | 1813 | bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR, |
| 1814 | NULL); |
| 1815 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1816 | |
| 1817 | aio_context_release(aio_context); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1818 | } |
| 1819 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1820 | static void external_snapshot_abort(BlkActionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1821 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1822 | ExternalSnapshotState *state = |
| 1823 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1824 | if (state->new_bs) { |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1825 | if (state->overlay_appended) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1826 | AioContext *aio_context; |
| 1827 | |
| 1828 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1829 | aio_context_acquire(aio_context); |
| 1830 | |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1831 | bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd() |
| 1832 | close state->old_bs; we need it */ |
| 1833 | bdrv_set_backing_hd(state->new_bs, NULL, &error_abort); |
Kevin Wolf | 5fe31c2 | 2017-03-06 16:20:51 +0100 | [diff] [blame] | 1834 | bdrv_replace_node(state->new_bs, state->old_bs, &error_abort); |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1835 | bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1836 | |
| 1837 | aio_context_release(aio_context); |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1838 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1839 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1840 | } |
| 1841 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1842 | static void external_snapshot_clean(BlkActionState *common) |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1843 | { |
| 1844 | ExternalSnapshotState *state = |
| 1845 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1846 | AioContext *aio_context; |
| 1847 | |
| 1848 | if (!state->old_bs) { |
| 1849 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1850 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1851 | |
| 1852 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1853 | aio_context_acquire(aio_context); |
| 1854 | |
| 1855 | bdrv_drained_end(state->old_bs); |
| 1856 | bdrv_unref(state->new_bs); |
| 1857 | |
| 1858 | aio_context_release(aio_context); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1859 | } |
| 1860 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1861 | typedef struct DriveBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1862 | BlkActionState common; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1863 | BlockDriverState *bs; |
| 1864 | BlockJob *job; |
| 1865 | } DriveBackupState; |
| 1866 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1867 | static BlockJob *do_drive_backup(DriveBackup *backup, BlockJobTxn *txn, |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 1868 | Error **errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1869 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1870 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1871 | { |
| 1872 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1873 | BlockDriverState *bs; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1874 | DriveBackup *backup; |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1875 | AioContext *aio_context; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1876 | Error *local_err = NULL; |
| 1877 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1878 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1879 | backup = common->action->u.drive_backup.data; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1880 | |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1881 | bs = qmp_get_root_bs(backup->device, errp); |
| 1882 | if (!bs) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1883 | return; |
| 1884 | } |
| 1885 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1886 | aio_context = bdrv_get_aio_context(bs); |
| 1887 | aio_context_acquire(aio_context); |
| 1888 | |
| 1889 | /* Paired with .clean() */ |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1890 | bdrv_drained_begin(bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1891 | |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1892 | state->bs = bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1893 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1894 | state->job = do_drive_backup(backup, common->block_job_txn, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1895 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1896 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1897 | goto out; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1898 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1899 | |
| 1900 | out: |
| 1901 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1902 | } |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1903 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1904 | static void drive_backup_commit(BlkActionState *common) |
| 1905 | { |
| 1906 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1907 | AioContext *aio_context; |
| 1908 | |
| 1909 | aio_context = bdrv_get_aio_context(state->bs); |
| 1910 | aio_context_acquire(aio_context); |
| 1911 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1912 | assert(state->job); |
| 1913 | block_job_start(state->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1914 | |
| 1915 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1916 | } |
| 1917 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1918 | static void drive_backup_abort(BlkActionState *common) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1919 | { |
| 1920 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1921 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1922 | if (state->job) { |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1923 | AioContext *aio_context; |
| 1924 | |
| 1925 | aio_context = bdrv_get_aio_context(state->bs); |
| 1926 | aio_context_acquire(aio_context); |
| 1927 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1928 | block_job_cancel_sync(state->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1929 | |
| 1930 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1931 | } |
| 1932 | } |
| 1933 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1934 | static void drive_backup_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1935 | { |
| 1936 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1937 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1938 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1939 | if (!state->bs) { |
| 1940 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1941 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1942 | |
| 1943 | aio_context = bdrv_get_aio_context(state->bs); |
| 1944 | aio_context_acquire(aio_context); |
| 1945 | |
| 1946 | bdrv_drained_end(state->bs); |
| 1947 | |
| 1948 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1949 | } |
| 1950 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1951 | typedef struct BlockdevBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1952 | BlkActionState common; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1953 | BlockDriverState *bs; |
| 1954 | BlockJob *job; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1955 | } BlockdevBackupState; |
| 1956 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1957 | static BlockJob *do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, |
| 1958 | Error **errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1959 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1960 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1961 | { |
| 1962 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1963 | BlockdevBackup *backup; |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1964 | BlockDriverState *bs, *target; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1965 | AioContext *aio_context; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1966 | Error *local_err = NULL; |
| 1967 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1968 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1969 | backup = common->action->u.blockdev_backup.data; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1970 | |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1971 | bs = qmp_get_root_bs(backup->device, errp); |
| 1972 | if (!bs) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1973 | return; |
| 1974 | } |
| 1975 | |
Kevin Wolf | 39d990a | 2016-08-02 19:22:04 +0200 | [diff] [blame] | 1976 | target = bdrv_lookup_bs(backup->target, backup->target, errp); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1977 | if (!target) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1978 | return; |
| 1979 | } |
| 1980 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1981 | aio_context = bdrv_get_aio_context(bs); |
| 1982 | if (aio_context != bdrv_get_aio_context(target)) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1983 | error_setg(errp, "Backup between two IO threads is not implemented"); |
| 1984 | return; |
| 1985 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1986 | aio_context_acquire(aio_context); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1987 | state->bs = bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1988 | |
| 1989 | /* Paired with .clean() */ |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1990 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1991 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1992 | state->job = do_blockdev_backup(backup, common->block_job_txn, &local_err); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1993 | if (local_err) { |
| 1994 | error_propagate(errp, local_err); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1995 | goto out; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1996 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1997 | |
| 1998 | out: |
| 1999 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2000 | } |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2001 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2002 | static void blockdev_backup_commit(BlkActionState *common) |
| 2003 | { |
| 2004 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2005 | AioContext *aio_context; |
| 2006 | |
| 2007 | aio_context = bdrv_get_aio_context(state->bs); |
| 2008 | aio_context_acquire(aio_context); |
| 2009 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2010 | assert(state->job); |
| 2011 | block_job_start(state->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2012 | |
| 2013 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2014 | } |
| 2015 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2016 | static void blockdev_backup_abort(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2017 | { |
| 2018 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2019 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2020 | if (state->job) { |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2021 | AioContext *aio_context; |
| 2022 | |
| 2023 | aio_context = bdrv_get_aio_context(state->bs); |
| 2024 | aio_context_acquire(aio_context); |
| 2025 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2026 | block_job_cancel_sync(state->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2027 | |
| 2028 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2029 | } |
| 2030 | } |
| 2031 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2032 | static void blockdev_backup_clean(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2033 | { |
| 2034 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2035 | AioContext *aio_context; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2036 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2037 | if (!state->bs) { |
| 2038 | return; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2039 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2040 | |
| 2041 | aio_context = bdrv_get_aio_context(state->bs); |
| 2042 | aio_context_acquire(aio_context); |
| 2043 | |
| 2044 | bdrv_drained_end(state->bs); |
| 2045 | |
| 2046 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2047 | } |
| 2048 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2049 | typedef struct BlockDirtyBitmapState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2050 | BlkActionState common; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2051 | BdrvDirtyBitmap *bitmap; |
| 2052 | BlockDriverState *bs; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2053 | HBitmap *backup; |
| 2054 | bool prepared; |
| 2055 | } BlockDirtyBitmapState; |
| 2056 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2057 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2058 | Error **errp) |
| 2059 | { |
| 2060 | Error *local_err = NULL; |
| 2061 | BlockDirtyBitmapAdd *action; |
| 2062 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2063 | common, common); |
| 2064 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2065 | if (action_check_completion_mode(common, errp) < 0) { |
| 2066 | return; |
| 2067 | } |
| 2068 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2069 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2070 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
| 2071 | qmp_block_dirty_bitmap_add(action->node, action->name, |
| 2072 | action->has_granularity, action->granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2073 | action->has_persistent, action->persistent, |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2074 | action->has_autoload, action->autoload, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2075 | &local_err); |
| 2076 | |
| 2077 | if (!local_err) { |
| 2078 | state->prepared = true; |
| 2079 | } else { |
| 2080 | error_propagate(errp, local_err); |
| 2081 | } |
| 2082 | } |
| 2083 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2084 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2085 | { |
| 2086 | BlockDirtyBitmapAdd *action; |
| 2087 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2088 | common, common); |
| 2089 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2090 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2091 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
| 2092 | * then the node reference and bitmap name must have been valid. |
| 2093 | */ |
| 2094 | if (state->prepared) { |
| 2095 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); |
| 2096 | } |
| 2097 | } |
| 2098 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2099 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2100 | Error **errp) |
| 2101 | { |
| 2102 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2103 | common, common); |
| 2104 | BlockDirtyBitmap *action; |
| 2105 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2106 | if (action_check_completion_mode(common, errp) < 0) { |
| 2107 | return; |
| 2108 | } |
| 2109 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2110 | action = common->action->u.block_dirty_bitmap_clear.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2111 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2112 | action->name, |
| 2113 | &state->bs, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2114 | errp); |
| 2115 | if (!state->bitmap) { |
| 2116 | return; |
| 2117 | } |
| 2118 | |
| 2119 | if (bdrv_dirty_bitmap_frozen(state->bitmap)) { |
| 2120 | error_setg(errp, "Cannot modify a frozen bitmap"); |
| 2121 | return; |
Vladimir Sementsov-Ogievskiy | 4f43e95 | 2018-03-13 15:34:00 -0400 | [diff] [blame] | 2122 | } else if (bdrv_dirty_bitmap_qmp_locked(state->bitmap)) { |
| 2123 | error_setg(errp, "Cannot modify a locked bitmap"); |
| 2124 | return; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2125 | } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) { |
| 2126 | error_setg(errp, "Cannot clear a disabled bitmap"); |
| 2127 | return; |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 2128 | } else if (bdrv_dirty_bitmap_readonly(state->bitmap)) { |
| 2129 | error_setg(errp, "Cannot clear a readonly bitmap"); |
| 2130 | return; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2131 | } |
| 2132 | |
| 2133 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2134 | } |
| 2135 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2136 | static void block_dirty_bitmap_clear_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2137 | { |
| 2138 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2139 | common, common); |
| 2140 | |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 2141 | if (state->backup) { |
| 2142 | bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup); |
| 2143 | } |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2144 | } |
| 2145 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2146 | static void block_dirty_bitmap_clear_commit(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2147 | { |
| 2148 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2149 | common, common); |
| 2150 | |
| 2151 | hbitmap_free(state->backup); |
| 2152 | } |
| 2153 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2154 | static void abort_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2155 | { |
| 2156 | error_setg(errp, "Transaction aborted using Abort action"); |
| 2157 | } |
| 2158 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2159 | static void abort_commit(BlkActionState *common) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2160 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 2161 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2162 | } |
| 2163 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2164 | static const BlkActionOps actions[] = { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2165 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
| 2166 | .instance_size = sizeof(ExternalSnapshotState), |
| 2167 | .prepare = external_snapshot_prepare, |
| 2168 | .commit = external_snapshot_commit, |
| 2169 | .abort = external_snapshot_abort, |
Alberto Garcia | 4ad6f3d | 2015-11-13 15:00:24 +0200 | [diff] [blame] | 2170 | .clean = external_snapshot_clean, |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2171 | }, |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2172 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2173 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2174 | .prepare = external_snapshot_prepare, |
| 2175 | .commit = external_snapshot_commit, |
| 2176 | .abort = external_snapshot_abort, |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 2177 | .clean = external_snapshot_clean, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2178 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2179 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 2180 | .instance_size = sizeof(DriveBackupState), |
| 2181 | .prepare = drive_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2182 | .commit = drive_backup_commit, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2183 | .abort = drive_backup_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2184 | .clean = drive_backup_clean, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2185 | }, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2186 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
| 2187 | .instance_size = sizeof(BlockdevBackupState), |
| 2188 | .prepare = blockdev_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2189 | .commit = blockdev_backup_commit, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2190 | .abort = blockdev_backup_abort, |
| 2191 | .clean = blockdev_backup_clean, |
| 2192 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2193 | [TRANSACTION_ACTION_KIND_ABORT] = { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2194 | .instance_size = sizeof(BlkActionState), |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2195 | .prepare = abort_prepare, |
| 2196 | .commit = abort_commit, |
| 2197 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2198 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 2199 | .instance_size = sizeof(InternalSnapshotState), |
| 2200 | .prepare = internal_snapshot_prepare, |
| 2201 | .abort = internal_snapshot_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2202 | .clean = internal_snapshot_clean, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2203 | }, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2204 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
| 2205 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2206 | .prepare = block_dirty_bitmap_add_prepare, |
| 2207 | .abort = block_dirty_bitmap_add_abort, |
| 2208 | }, |
| 2209 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { |
| 2210 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2211 | .prepare = block_dirty_bitmap_clear_prepare, |
| 2212 | .commit = block_dirty_bitmap_clear_commit, |
| 2213 | .abort = block_dirty_bitmap_clear_abort, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2214 | } |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2215 | }; |
| 2216 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2217 | /** |
| 2218 | * Allocate a TransactionProperties structure if necessary, and fill |
| 2219 | * that structure with desired defaults if they are unset. |
| 2220 | */ |
| 2221 | static TransactionProperties *get_transaction_properties( |
| 2222 | TransactionProperties *props) |
| 2223 | { |
| 2224 | if (!props) { |
| 2225 | props = g_new0(TransactionProperties, 1); |
| 2226 | } |
| 2227 | |
| 2228 | if (!props->has_completion_mode) { |
| 2229 | props->has_completion_mode = true; |
| 2230 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; |
| 2231 | } |
| 2232 | |
| 2233 | return props; |
| 2234 | } |
| 2235 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2236 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2237 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 2238 | * any fail then we roll back all operations in the group. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2239 | */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2240 | void qmp_transaction(TransactionActionList *dev_list, |
| 2241 | bool has_props, |
| 2242 | struct TransactionProperties *props, |
| 2243 | Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2244 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2245 | TransactionActionList *dev_entry = dev_list; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2246 | BlockJobTxn *block_job_txn = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2247 | BlkActionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 2248 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2249 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2250 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2251 | QSIMPLEQ_INIT(&snap_bdrv_states); |
| 2252 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2253 | /* Does this transaction get canceled as a group on failure? |
| 2254 | * If not, we don't really need to make a BlockJobTxn. |
| 2255 | */ |
| 2256 | props = get_transaction_properties(props); |
| 2257 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 2258 | block_job_txn = block_job_txn_new(); |
| 2259 | } |
| 2260 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2261 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2262 | bdrv_drain_all(); |
| 2263 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2264 | /* We don't do anything in this loop that commits us to the operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2265 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2266 | TransactionAction *dev_info = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2267 | const BlkActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2268 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2269 | dev_info = dev_entry->value; |
| 2270 | dev_entry = dev_entry->next; |
| 2271 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2272 | assert(dev_info->type < ARRAY_SIZE(actions)); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2273 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2274 | ops = &actions[dev_info->type]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 2275 | assert(ops->instance_size > 0); |
| 2276 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2277 | state = g_malloc0(ops->instance_size); |
| 2278 | state->ops = ops; |
| 2279 | state->action = dev_info; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2280 | state->block_job_txn = block_job_txn; |
| 2281 | state->txn_props = props; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2282 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2283 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2284 | state->ops->prepare(state, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2285 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2286 | error_propagate(errp, local_err); |
| 2287 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2288 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2289 | } |
| 2290 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2291 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 2292 | if (state->ops->commit) { |
| 2293 | state->ops->commit(state); |
| 2294 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2295 | } |
| 2296 | |
| 2297 | /* success */ |
| 2298 | goto exit; |
| 2299 | |
| 2300 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2301 | /* failure, and it is all-or-none; roll back all operations */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2302 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
| 2303 | if (state->ops->abort) { |
| 2304 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2305 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2306 | } |
| 2307 | exit: |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2308 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
| 2309 | if (state->ops->clean) { |
| 2310 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2311 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2312 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2313 | } |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2314 | if (!has_props) { |
| 2315 | qapi_free_TransactionProperties(props); |
| 2316 | } |
| 2317 | block_job_txn_unref(block_job_txn); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2318 | } |
| 2319 | |
Kevin Wolf | fbe2d81 | 2016-09-20 13:38:46 +0200 | [diff] [blame] | 2320 | void qmp_eject(bool has_device, const char *device, |
| 2321 | bool has_id, const char *id, |
| 2322 | bool has_force, bool force, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2323 | { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2324 | Error *local_err = NULL; |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2325 | int rc; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2326 | |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2327 | if (!has_force) { |
| 2328 | force = false; |
| 2329 | } |
| 2330 | |
Kevin Wolf | fbe2d81 | 2016-09-20 13:38:46 +0200 | [diff] [blame] | 2331 | rc = do_open_tray(has_device ? device : NULL, |
| 2332 | has_id ? id : NULL, |
| 2333 | force, &local_err); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2334 | if (rc && rc != -ENOSYS) { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2335 | error_propagate(errp, local_err); |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 2336 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2337 | } |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2338 | error_free(local_err); |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2339 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2340 | blockdev_remove_medium(has_device, device, has_id, id, errp); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2341 | } |
| 2342 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2343 | void qmp_block_passwd(bool has_device, const char *device, |
| 2344 | bool has_node_name, const char *node_name, |
| 2345 | const char *password, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2346 | { |
Daniel P. Berrange | c01c214 | 2017-06-23 17:24:16 +0100 | [diff] [blame] | 2347 | error_setg(errp, |
| 2348 | "Setting block passwords directly is no longer supported"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2349 | } |
| 2350 | |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2351 | /* |
| 2352 | * Attempt to open the tray of @device. |
| 2353 | * If @force, ignore its tray lock. |
| 2354 | * Else, if the tray is locked, don't open it, but ask the guest to open it. |
| 2355 | * On error, store an error through @errp and return -errno. |
| 2356 | * If @device does not exist, return -ENODEV. |
| 2357 | * If it has no removable media, return -ENOTSUP. |
| 2358 | * If it has no tray, return -ENOSYS. |
| 2359 | * If the guest was asked to open the tray, return -EINPROGRESS. |
| 2360 | * Else, return 0. |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2361 | */ |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2362 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
| 2363 | bool force, Error **errp) |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2364 | { |
| 2365 | BlockBackend *blk; |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2366 | const char *device = qdev_id ?: blk_name; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2367 | bool locked; |
| 2368 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2369 | blk = qmp_get_blk(blk_name, qdev_id, errp); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2370 | if (!blk) { |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2371 | return -ENODEV; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2372 | } |
| 2373 | |
| 2374 | if (!blk_dev_has_removable_media(blk)) { |
| 2375 | error_setg(errp, "Device '%s' is not removable", device); |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2376 | return -ENOTSUP; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2377 | } |
| 2378 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2379 | if (!blk_dev_has_tray(blk)) { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2380 | error_setg(errp, "Device '%s' does not have a tray", device); |
| 2381 | return -ENOSYS; |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2382 | } |
| 2383 | |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2384 | if (blk_dev_is_tray_open(blk)) { |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2385 | return 0; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2386 | } |
| 2387 | |
| 2388 | locked = blk_dev_is_medium_locked(blk); |
| 2389 | if (locked) { |
| 2390 | blk_dev_eject_request(blk, force); |
| 2391 | } |
| 2392 | |
| 2393 | if (!locked || force) { |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2394 | blk_dev_change_media_cb(blk, false, &error_abort); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2395 | } |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2396 | |
| 2397 | if (locked && !force) { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2398 | error_setg(errp, "Device '%s' is locked and force was not specified, " |
| 2399 | "wait for tray to open and try again", device); |
| 2400 | return -EINPROGRESS; |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2401 | } |
| 2402 | |
| 2403 | return 0; |
| 2404 | } |
| 2405 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2406 | void qmp_blockdev_open_tray(bool has_device, const char *device, |
| 2407 | bool has_id, const char *id, |
| 2408 | bool has_force, bool force, |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2409 | Error **errp) |
| 2410 | { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2411 | Error *local_err = NULL; |
| 2412 | int rc; |
| 2413 | |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2414 | if (!has_force) { |
| 2415 | force = false; |
| 2416 | } |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2417 | rc = do_open_tray(has_device ? device : NULL, |
| 2418 | has_id ? id : NULL, |
| 2419 | force, &local_err); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2420 | if (rc && rc != -ENOSYS && rc != -EINPROGRESS) { |
| 2421 | error_propagate(errp, local_err); |
| 2422 | return; |
| 2423 | } |
| 2424 | error_free(local_err); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2425 | } |
| 2426 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2427 | void qmp_blockdev_close_tray(bool has_device, const char *device, |
| 2428 | bool has_id, const char *id, |
| 2429 | Error **errp) |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2430 | { |
| 2431 | BlockBackend *blk; |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2432 | Error *local_err = NULL; |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2433 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2434 | device = has_device ? device : NULL; |
| 2435 | id = has_id ? id : NULL; |
| 2436 | |
| 2437 | blk = qmp_get_blk(device, id, errp); |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2438 | if (!blk) { |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2439 | return; |
| 2440 | } |
| 2441 | |
| 2442 | if (!blk_dev_has_removable_media(blk)) { |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2443 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2444 | return; |
| 2445 | } |
| 2446 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2447 | if (!blk_dev_has_tray(blk)) { |
| 2448 | /* Ignore this command on tray-less devices */ |
| 2449 | return; |
| 2450 | } |
| 2451 | |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2452 | if (!blk_dev_is_tray_open(blk)) { |
| 2453 | return; |
| 2454 | } |
| 2455 | |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2456 | blk_dev_change_media_cb(blk, true, &local_err); |
| 2457 | if (local_err) { |
| 2458 | error_propagate(errp, local_err); |
| 2459 | return; |
| 2460 | } |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2461 | } |
| 2462 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2463 | static void blockdev_remove_medium(bool has_device, const char *device, |
| 2464 | bool has_id, const char *id, Error **errp) |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2465 | { |
| 2466 | BlockBackend *blk; |
| 2467 | BlockDriverState *bs; |
| 2468 | AioContext *aio_context; |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2469 | bool has_attached_device; |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2470 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2471 | device = has_device ? device : NULL; |
| 2472 | id = has_id ? id : NULL; |
| 2473 | |
| 2474 | blk = qmp_get_blk(device, id, errp); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2475 | if (!blk) { |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2476 | return; |
| 2477 | } |
| 2478 | |
| 2479 | /* For BBs without a device, we can exchange the BDS tree at will */ |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2480 | has_attached_device = blk_get_attached_dev(blk); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2481 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2482 | if (has_attached_device && !blk_dev_has_removable_media(blk)) { |
| 2483 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2484 | return; |
| 2485 | } |
| 2486 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2487 | if (has_attached_device && blk_dev_has_tray(blk) && |
| 2488 | !blk_dev_is_tray_open(blk)) |
| 2489 | { |
| 2490 | error_setg(errp, "Tray of device '%s' is not open", device ?: id); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2491 | return; |
| 2492 | } |
| 2493 | |
| 2494 | bs = blk_bs(blk); |
| 2495 | if (!bs) { |
| 2496 | return; |
| 2497 | } |
| 2498 | |
| 2499 | aio_context = bdrv_get_aio_context(bs); |
| 2500 | aio_context_acquire(aio_context); |
| 2501 | |
| 2502 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
| 2503 | goto out; |
| 2504 | } |
| 2505 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2506 | blk_remove_bs(blk); |
| 2507 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2508 | if (!blk_dev_has_tray(blk)) { |
| 2509 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be |
| 2510 | * called at all); therefore, the medium needs to be ejected here. |
| 2511 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load |
| 2512 | * value passed here (i.e. false). */ |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2513 | blk_dev_change_media_cb(blk, false, &error_abort); |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2514 | } |
| 2515 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2516 | out: |
| 2517 | aio_context_release(aio_context); |
| 2518 | } |
| 2519 | |
Max Reitz | 34ce111 | 2017-11-10 23:43:02 +0100 | [diff] [blame] | 2520 | void qmp_blockdev_remove_medium(const char *id, Error **errp) |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2521 | { |
| 2522 | blockdev_remove_medium(false, NULL, true, id, errp); |
| 2523 | } |
| 2524 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2525 | static void qmp_blockdev_insert_anon_medium(BlockBackend *blk, |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2526 | BlockDriverState *bs, Error **errp) |
| 2527 | { |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2528 | Error *local_err = NULL; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2529 | bool has_device; |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2530 | int ret; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2531 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2532 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2533 | has_device = blk_get_attached_dev(blk); |
| 2534 | |
| 2535 | if (has_device && !blk_dev_has_removable_media(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2536 | error_setg(errp, "Device is not removable"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2537 | return; |
| 2538 | } |
| 2539 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2540 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2541 | error_setg(errp, "Tray of the device is not open"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2542 | return; |
| 2543 | } |
| 2544 | |
| 2545 | if (blk_bs(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2546 | error_setg(errp, "There already is a medium in the device"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2547 | return; |
| 2548 | } |
| 2549 | |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2550 | ret = blk_insert_bs(blk, bs, errp); |
| 2551 | if (ret < 0) { |
| 2552 | return; |
| 2553 | } |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2554 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2555 | if (!blk_dev_has_tray(blk)) { |
| 2556 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be |
| 2557 | * called at all); therefore, the medium needs to be pushed into the |
| 2558 | * slot here. |
| 2559 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load |
| 2560 | * value passed here (i.e. true). */ |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2561 | blk_dev_change_media_cb(blk, true, &local_err); |
| 2562 | if (local_err) { |
| 2563 | error_propagate(errp, local_err); |
| 2564 | blk_remove_bs(blk); |
| 2565 | return; |
| 2566 | } |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2567 | } |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2568 | } |
| 2569 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2570 | static void blockdev_insert_medium(bool has_device, const char *device, |
| 2571 | bool has_id, const char *id, |
| 2572 | const char *node_name, Error **errp) |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2573 | { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2574 | BlockBackend *blk; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2575 | BlockDriverState *bs; |
| 2576 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2577 | blk = qmp_get_blk(has_device ? device : NULL, |
| 2578 | has_id ? id : NULL, |
| 2579 | errp); |
| 2580 | if (!blk) { |
| 2581 | return; |
| 2582 | } |
| 2583 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2584 | bs = bdrv_find_node(node_name); |
| 2585 | if (!bs) { |
| 2586 | error_setg(errp, "Node '%s' not found", node_name); |
| 2587 | return; |
| 2588 | } |
| 2589 | |
Kevin Wolf | 1f0c461 | 2016-03-22 18:38:44 +0100 | [diff] [blame] | 2590 | if (bdrv_has_blk(bs)) { |
Kevin Wolf | e467da7 | 2016-09-21 14:56:09 +0200 | [diff] [blame] | 2591 | error_setg(errp, "Node '%s' is already in use", node_name); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2592 | return; |
| 2593 | } |
| 2594 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2595 | qmp_blockdev_insert_anon_medium(blk, bs, errp); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2596 | } |
| 2597 | |
Max Reitz | 34ce111 | 2017-11-10 23:43:02 +0100 | [diff] [blame] | 2598 | void qmp_blockdev_insert_medium(const char *id, const char *node_name, |
| 2599 | Error **errp) |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2600 | { |
| 2601 | blockdev_insert_medium(false, NULL, true, id, node_name, errp); |
| 2602 | } |
| 2603 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2604 | void qmp_blockdev_change_medium(bool has_device, const char *device, |
| 2605 | bool has_id, const char *id, |
| 2606 | const char *filename, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2607 | bool has_format, const char *format, |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2608 | bool has_read_only, |
| 2609 | BlockdevChangeReadOnlyMode read_only, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2610 | Error **errp) |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2611 | { |
| 2612 | BlockBackend *blk; |
| 2613 | BlockDriverState *medium_bs = NULL; |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 2614 | int bdrv_flags; |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2615 | bool detect_zeroes; |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2616 | int rc; |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2617 | QDict *options = NULL; |
| 2618 | Error *err = NULL; |
| 2619 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2620 | blk = qmp_get_blk(has_device ? device : NULL, |
| 2621 | has_id ? id : NULL, |
| 2622 | errp); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2623 | if (!blk) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2624 | goto fail; |
| 2625 | } |
| 2626 | |
| 2627 | if (blk_bs(blk)) { |
| 2628 | blk_update_root_state(blk); |
| 2629 | } |
| 2630 | |
| 2631 | bdrv_flags = blk_get_open_flags_from_root_state(blk); |
Alyssa Milburn | 156abc2 | 2016-02-06 13:36:18 +0000 | [diff] [blame] | 2632 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
| 2633 | BDRV_O_PROTOCOL); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2634 | |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2635 | if (!has_read_only) { |
| 2636 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; |
| 2637 | } |
| 2638 | |
| 2639 | switch (read_only) { |
| 2640 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: |
| 2641 | break; |
| 2642 | |
| 2643 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: |
| 2644 | bdrv_flags &= ~BDRV_O_RDWR; |
| 2645 | break; |
| 2646 | |
| 2647 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: |
| 2648 | bdrv_flags |= BDRV_O_RDWR; |
| 2649 | break; |
| 2650 | |
| 2651 | default: |
| 2652 | abort(); |
| 2653 | } |
| 2654 | |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2655 | options = qdict_new(); |
| 2656 | detect_zeroes = blk_get_detect_zeroes_from_root_state(blk); |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 2657 | qdict_put_str(options, "detect-zeroes", detect_zeroes ? "on" : "off"); |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2658 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2659 | if (has_format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 2660 | qdict_put_str(options, "driver", format); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2661 | } |
| 2662 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 2663 | medium_bs = bdrv_open(filename, NULL, options, bdrv_flags, errp); |
| 2664 | if (!medium_bs) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2665 | goto fail; |
| 2666 | } |
| 2667 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2668 | rc = do_open_tray(has_device ? device : NULL, |
| 2669 | has_id ? id : NULL, |
| 2670 | false, &err); |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2671 | if (rc && rc != -ENOSYS) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2672 | error_propagate(errp, err); |
| 2673 | goto fail; |
| 2674 | } |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2675 | error_free(err); |
| 2676 | err = NULL; |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2677 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2678 | blockdev_remove_medium(has_device, device, has_id, id, &err); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2679 | if (err) { |
| 2680 | error_propagate(errp, err); |
| 2681 | goto fail; |
| 2682 | } |
| 2683 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2684 | qmp_blockdev_insert_anon_medium(blk, medium_bs, &err); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2685 | if (err) { |
| 2686 | error_propagate(errp, err); |
| 2687 | goto fail; |
| 2688 | } |
| 2689 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2690 | qmp_blockdev_close_tray(has_device, device, has_id, id, errp); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2691 | |
| 2692 | fail: |
| 2693 | /* If the medium has been inserted, the device has its own reference, so |
| 2694 | * ours must be relinquished; and if it has not been inserted successfully, |
| 2695 | * the reference must be relinquished anyway */ |
| 2696 | bdrv_unref(medium_bs); |
| 2697 | } |
| 2698 | |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2699 | /* throttling disk I/O limits */ |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2700 | void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2701 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2702 | ThrottleConfig cfg; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2703 | BlockDriverState *bs; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2704 | BlockBackend *blk; |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2705 | AioContext *aio_context; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2706 | |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2707 | blk = qmp_get_blk(arg->has_device ? arg->device : NULL, |
| 2708 | arg->has_id ? arg->id : NULL, |
| 2709 | errp); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2710 | if (!blk) { |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2711 | return; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2712 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2713 | |
| 2714 | aio_context = blk_get_aio_context(blk); |
| 2715 | aio_context_acquire(aio_context); |
| 2716 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2717 | bs = blk_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2718 | if (!bs) { |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2719 | error_setg(errp, "Device has no medium"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2720 | goto out; |
| 2721 | } |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2722 | |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 2723 | throttle_config_init(&cfg); |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2724 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps; |
| 2725 | cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd; |
| 2726 | cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2727 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2728 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops; |
| 2729 | cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd; |
| 2730 | cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2731 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2732 | if (arg->has_bps_max) { |
| 2733 | cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2734 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2735 | if (arg->has_bps_rd_max) { |
| 2736 | cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2737 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2738 | if (arg->has_bps_wr_max) { |
| 2739 | cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2740 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2741 | if (arg->has_iops_max) { |
| 2742 | cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2743 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2744 | if (arg->has_iops_rd_max) { |
| 2745 | cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2746 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2747 | if (arg->has_iops_wr_max) { |
| 2748 | cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2749 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2750 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2751 | if (arg->has_bps_max_length) { |
| 2752 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = arg->bps_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2753 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2754 | if (arg->has_bps_rd_max_length) { |
| 2755 | cfg.buckets[THROTTLE_BPS_READ].burst_length = arg->bps_rd_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2756 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2757 | if (arg->has_bps_wr_max_length) { |
| 2758 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = arg->bps_wr_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2759 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2760 | if (arg->has_iops_max_length) { |
| 2761 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = arg->iops_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2762 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2763 | if (arg->has_iops_rd_max_length) { |
| 2764 | cfg.buckets[THROTTLE_OPS_READ].burst_length = arg->iops_rd_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2765 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2766 | if (arg->has_iops_wr_max_length) { |
| 2767 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = arg->iops_wr_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2768 | } |
| 2769 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2770 | if (arg->has_iops_size) { |
| 2771 | cfg.op_size = arg->iops_size; |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2772 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2773 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 2774 | if (!throttle_is_valid(&cfg, errp)) { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2775 | goto out; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2776 | } |
| 2777 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2778 | if (throttle_enabled(&cfg)) { |
| 2779 | /* Enable I/O limits if they're not enabled yet, otherwise |
| 2780 | * just update the throttling group. */ |
Manos Pitsidianakis | 022cdc9 | 2017-08-25 16:20:23 +0300 | [diff] [blame] | 2781 | if (!blk_get_public(blk)->throttle_group_member.throttle_state) { |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2782 | blk_io_limits_enable(blk, |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2783 | arg->has_group ? arg->group : |
| 2784 | arg->has_device ? arg->device : |
| 2785 | arg->id); |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2786 | } else if (arg->has_group) { |
| 2787 | blk_io_limits_update_group(blk, arg->group); |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2788 | } |
| 2789 | /* Set the new throttling configuration */ |
Kevin Wolf | 9714807 | 2016-03-21 13:53:52 +0100 | [diff] [blame] | 2790 | blk_set_io_limits(blk, &cfg); |
Manos Pitsidianakis | 022cdc9 | 2017-08-25 16:20:23 +0300 | [diff] [blame] | 2791 | } else if (blk_get_public(blk)->throttle_group_member.throttle_state) { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2792 | /* If all throttling settings are set to 0, disable I/O limits */ |
Kevin Wolf | 9714807 | 2016-03-21 13:53:52 +0100 | [diff] [blame] | 2793 | blk_io_limits_disable(blk); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2794 | } |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2795 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2796 | out: |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2797 | aio_context_release(aio_context); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2798 | } |
| 2799 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2800 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
| 2801 | bool has_granularity, uint32_t granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2802 | bool has_persistent, bool persistent, |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2803 | bool has_autoload, bool autoload, |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2804 | Error **errp) |
| 2805 | { |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2806 | BlockDriverState *bs; |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2807 | BdrvDirtyBitmap *bitmap; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2808 | |
| 2809 | if (!name || name[0] == '\0') { |
| 2810 | error_setg(errp, "Bitmap name cannot be empty"); |
| 2811 | return; |
| 2812 | } |
| 2813 | |
| 2814 | bs = bdrv_lookup_bs(node, node, errp); |
| 2815 | if (!bs) { |
| 2816 | return; |
| 2817 | } |
| 2818 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2819 | if (has_granularity) { |
| 2820 | if (granularity < 512 || !is_power_of_2(granularity)) { |
| 2821 | error_setg(errp, "Granularity must be power of 2 " |
| 2822 | "and at least 512"); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2823 | return; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2824 | } |
| 2825 | } else { |
| 2826 | /* Default to cluster size, if available: */ |
| 2827 | granularity = bdrv_get_default_bitmap_granularity(bs); |
| 2828 | } |
| 2829 | |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2830 | if (!has_persistent) { |
| 2831 | persistent = false; |
| 2832 | } |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2833 | |
Vladimir Sementsov-Ogievskiy | 3e99da5 | 2018-02-02 19:07:52 +0300 | [diff] [blame] | 2834 | if (has_autoload) { |
| 2835 | warn_report("Autoload option is deprecated and its value is ignored"); |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2836 | } |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2837 | |
| 2838 | if (persistent && |
| 2839 | !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp)) |
| 2840 | { |
| 2841 | return; |
| 2842 | } |
| 2843 | |
| 2844 | bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp); |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2845 | if (bitmap == NULL) { |
| 2846 | return; |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2847 | } |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2848 | |
| 2849 | bdrv_dirty_bitmap_set_persistance(bitmap, persistent); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2850 | } |
| 2851 | |
| 2852 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, |
| 2853 | Error **errp) |
| 2854 | { |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2855 | BlockDriverState *bs; |
| 2856 | BdrvDirtyBitmap *bitmap; |
Vladimir Sementsov-Ogievskiy | 5c36c1a | 2017-06-28 15:05:29 +0300 | [diff] [blame] | 2857 | Error *local_err = NULL; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2858 | |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2859 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2860 | if (!bitmap || !bs) { |
| 2861 | return; |
| 2862 | } |
| 2863 | |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2864 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2865 | error_setg(errp, |
| 2866 | "Bitmap '%s' is currently frozen and cannot be removed", |
| 2867 | name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2868 | return; |
Vladimir Sementsov-Ogievskiy | 4f43e95 | 2018-03-13 15:34:00 -0400 | [diff] [blame] | 2869 | } else if (bdrv_dirty_bitmap_qmp_locked(bitmap)) { |
| 2870 | error_setg(errp, |
| 2871 | "Bitmap '%s' is currently locked and cannot be removed", |
| 2872 | name); |
| 2873 | return; |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2874 | } |
Vladimir Sementsov-Ogievskiy | 5c36c1a | 2017-06-28 15:05:29 +0300 | [diff] [blame] | 2875 | |
| 2876 | if (bdrv_dirty_bitmap_get_persistance(bitmap)) { |
| 2877 | bdrv_remove_persistent_dirty_bitmap(bs, name, &local_err); |
| 2878 | if (local_err != NULL) { |
| 2879 | error_propagate(errp, local_err); |
| 2880 | return; |
| 2881 | } |
| 2882 | } |
| 2883 | |
John Snow | 20dca81 | 2015-04-17 19:50:02 -0400 | [diff] [blame] | 2884 | bdrv_dirty_bitmap_make_anon(bitmap); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2885 | bdrv_release_dirty_bitmap(bs, bitmap); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2886 | } |
| 2887 | |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2888 | /** |
| 2889 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap |
| 2890 | * immediately after a full backup operation. |
| 2891 | */ |
| 2892 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, |
| 2893 | Error **errp) |
| 2894 | { |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2895 | BdrvDirtyBitmap *bitmap; |
| 2896 | BlockDriverState *bs; |
| 2897 | |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2898 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2899 | if (!bitmap || !bs) { |
| 2900 | return; |
| 2901 | } |
| 2902 | |
| 2903 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2904 | error_setg(errp, |
| 2905 | "Bitmap '%s' is currently frozen and cannot be modified", |
| 2906 | name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2907 | return; |
Vladimir Sementsov-Ogievskiy | 4f43e95 | 2018-03-13 15:34:00 -0400 | [diff] [blame] | 2908 | } else if (bdrv_dirty_bitmap_qmp_locked(bitmap)) { |
| 2909 | error_setg(errp, |
| 2910 | "Bitmap '%s' is currently locked and cannot be modified", |
| 2911 | name); |
| 2912 | return; |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2913 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { |
| 2914 | error_setg(errp, |
| 2915 | "Bitmap '%s' is currently disabled and cannot be cleared", |
| 2916 | name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2917 | return; |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 2918 | } else if (bdrv_dirty_bitmap_readonly(bitmap)) { |
| 2919 | error_setg(errp, "Bitmap '%s' is readonly and cannot be cleared", name); |
| 2920 | return; |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2921 | } |
| 2922 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2923 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2924 | } |
| 2925 | |
Vladimir Sementsov-Ogievskiy | a3b5253 | 2017-06-28 15:05:25 +0300 | [diff] [blame] | 2926 | BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node, |
| 2927 | const char *name, |
| 2928 | Error **errp) |
| 2929 | { |
| 2930 | BdrvDirtyBitmap *bitmap; |
| 2931 | BlockDriverState *bs; |
| 2932 | BlockDirtyBitmapSha256 *ret = NULL; |
| 2933 | char *sha256; |
| 2934 | |
| 2935 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 2936 | if (!bitmap || !bs) { |
| 2937 | return NULL; |
| 2938 | } |
| 2939 | |
| 2940 | sha256 = bdrv_dirty_bitmap_sha256(bitmap, errp); |
| 2941 | if (sha256 == NULL) { |
| 2942 | return NULL; |
| 2943 | } |
| 2944 | |
| 2945 | ret = g_new(BlockDirtyBitmapSha256, 1); |
| 2946 | ret->sha256 = sha256; |
| 2947 | |
| 2948 | return ret; |
| 2949 | } |
| 2950 | |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2951 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2952 | { |
| 2953 | const char *id = qdict_get_str(qdict, "id"); |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 2954 | BlockBackend *blk; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2955 | BlockDriverState *bs; |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2956 | AioContext *aio_context; |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 2957 | Error *local_err = NULL; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2958 | |
Kevin Wolf | 2073d41 | 2016-02-23 17:50:37 +0100 | [diff] [blame] | 2959 | bs = bdrv_find_node(id); |
| 2960 | if (bs) { |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 2961 | qmp_blockdev_del(id, &local_err); |
Kevin Wolf | 2073d41 | 2016-02-23 17:50:37 +0100 | [diff] [blame] | 2962 | if (local_err) { |
| 2963 | error_report_err(local_err); |
| 2964 | } |
| 2965 | return; |
| 2966 | } |
| 2967 | |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 2968 | blk = blk_by_name(id); |
| 2969 | if (!blk) { |
Markus Armbruster | b1422f2 | 2014-05-16 11:00:09 +0200 | [diff] [blame] | 2970 | error_report("Device '%s' not found", id); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2971 | return; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2972 | } |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2973 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 2974 | if (!blk_legacy_dinfo(blk)) { |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 2975 | error_report("Deleting device added with blockdev-add" |
| 2976 | " is not supported"); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2977 | return; |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 2978 | } |
| 2979 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2980 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2981 | aio_context_acquire(aio_context); |
| 2982 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2983 | bs = blk_bs(blk); |
| 2984 | if (bs) { |
| 2985 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
| 2986 | error_report_err(local_err); |
| 2987 | aio_context_release(aio_context); |
| 2988 | return; |
| 2989 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2990 | |
Max Reitz | 938abd4 | 2016-01-29 16:36:09 +0100 | [diff] [blame] | 2991 | blk_remove_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2992 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2993 | |
Max Reitz | 7c73587 | 2016-03-16 19:54:39 +0100 | [diff] [blame] | 2994 | /* Make the BlockBackend and the attached BlockDriverState anonymous */ |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 2995 | monitor_remove_blk(blk); |
| 2996 | |
Max Reitz | 7c73587 | 2016-03-16 19:54:39 +0100 | [diff] [blame] | 2997 | /* If this BlockBackend has a device attached to it, its refcount will be |
| 2998 | * decremented when the device is removed; otherwise we have to do so here. |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 2999 | */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 3000 | if (blk_get_attached_dev(blk)) { |
Stefan Hajnoczi | 293c51a | 2013-06-05 10:33:14 +0200 | [diff] [blame] | 3001 | /* Further I/O must not pause the guest */ |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 3002 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
| 3003 | BLOCKDEV_ON_ERROR_REPORT); |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 3004 | } else { |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 3005 | blk_unref(blk); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3006 | } |
| 3007 | |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3008 | aio_context_release(aio_context); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3009 | } |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3010 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3011 | void qmp_block_resize(bool has_device, const char *device, |
| 3012 | bool has_node_name, const char *node_name, |
| 3013 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3014 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3015 | Error *local_err = NULL; |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3016 | BlockBackend *blk = NULL; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3017 | BlockDriverState *bs; |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3018 | AioContext *aio_context; |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 3019 | int ret; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3020 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3021 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 3022 | has_node_name ? node_name : NULL, |
| 3023 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3024 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3025 | error_propagate(errp, local_err); |
| 3026 | return; |
| 3027 | } |
| 3028 | |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3029 | aio_context = bdrv_get_aio_context(bs); |
| 3030 | aio_context_acquire(aio_context); |
| 3031 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3032 | if (!bdrv_is_first_non_filter(bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3033 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3034 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3035 | } |
| 3036 | |
| 3037 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3038 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3039 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3040 | } |
| 3041 | |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 3042 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3043 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3044 | goto out; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 3045 | } |
| 3046 | |
Kevin Wolf | 6d0eb64 | 2017-01-20 17:07:26 +0100 | [diff] [blame] | 3047 | blk = blk_new(BLK_PERM_RESIZE, BLK_PERM_ALL); |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 3048 | ret = blk_insert_bs(blk, bs, errp); |
| 3049 | if (ret < 0) { |
| 3050 | goto out; |
| 3051 | } |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3052 | |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 3053 | bdrv_drained_begin(bs); |
Max Reitz | 3a691c5 | 2017-06-13 22:20:54 +0200 | [diff] [blame] | 3054 | ret = blk_truncate(blk, size, PREALLOC_MODE_OFF, errp); |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 3055 | bdrv_drained_end(bs); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3056 | |
| 3057 | out: |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3058 | blk_unref(blk); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3059 | aio_context_release(aio_context); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3060 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3061 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 3062 | void qmp_block_stream(bool has_job_id, const char *job_id, const char *device, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3063 | bool has_base, const char *base, |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3064 | bool has_base_node, const char *base_node, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3065 | bool has_backing_file, const char *backing_file, |
| 3066 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3067 | bool has_on_error, BlockdevOnError on_error, |
| 3068 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3069 | { |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3070 | BlockDriverState *bs, *iter; |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3071 | BlockDriverState *base_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3072 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3073 | Error *local_err = NULL; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3074 | const char *base_name = NULL; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3075 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3076 | if (!has_on_error) { |
| 3077 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3078 | } |
| 3079 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3080 | bs = bdrv_lookup_bs(device, device, errp); |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3081 | if (!bs) { |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3082 | return; |
| 3083 | } |
| 3084 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3085 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3086 | aio_context_acquire(aio_context); |
| 3087 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3088 | if (has_base && has_base_node) { |
| 3089 | error_setg(errp, "'base' and 'base-node' cannot be specified " |
| 3090 | "at the same time"); |
| 3091 | goto out; |
| 3092 | } |
| 3093 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3094 | if (has_base) { |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3095 | base_bs = bdrv_find_backing_image(bs, base); |
| 3096 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3097 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3098 | goto out; |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3099 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3100 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3101 | base_name = base; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3102 | } |
| 3103 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3104 | if (has_base_node) { |
| 3105 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 3106 | if (!base_bs) { |
| 3107 | goto out; |
| 3108 | } |
| 3109 | if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { |
| 3110 | error_setg(errp, "Node '%s' is not a backing image of '%s'", |
| 3111 | base_node, device); |
| 3112 | goto out; |
| 3113 | } |
| 3114 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 3115 | base_name = base_bs->filename; |
| 3116 | } |
| 3117 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3118 | /* Check for op blockers in the whole chain between bs and base */ |
| 3119 | for (iter = bs; iter && iter != base_bs; iter = backing_bs(iter)) { |
| 3120 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { |
| 3121 | goto out; |
| 3122 | } |
| 3123 | } |
| 3124 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3125 | /* if we are streaming the entire chain, the result will have no backing |
| 3126 | * file, and specifying one is therefore an error */ |
| 3127 | if (base_bs == NULL && has_backing_file) { |
| 3128 | error_setg(errp, "backing file specified, but streaming the " |
| 3129 | "entire chain"); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3130 | goto out; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3131 | } |
| 3132 | |
| 3133 | /* backing_file string overrides base bs filename */ |
| 3134 | base_name = has_backing_file ? backing_file : base_name; |
| 3135 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 3136 | stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name, |
John Snow | 8254b6d | 2016-10-27 12:06:58 -0400 | [diff] [blame] | 3137 | has_speed ? speed : 0, on_error, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3138 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3139 | error_propagate(errp, local_err); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3140 | goto out; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3141 | } |
| 3142 | |
| 3143 | trace_qmp_block_stream(bs, bs->job); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3144 | |
| 3145 | out: |
| 3146 | aio_context_release(aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3147 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3148 | |
Alberto Garcia | fd62c60 | 2016-07-05 17:29:00 +0300 | [diff] [blame] | 3149 | void qmp_block_commit(bool has_job_id, const char *job_id, const char *device, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3150 | bool has_base, const char *base, |
| 3151 | bool has_top, const char *top, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3152 | bool has_backing_file, const char *backing_file, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3153 | bool has_speed, int64_t speed, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3154 | bool has_filter_node_name, const char *filter_node_name, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3155 | Error **errp) |
| 3156 | { |
| 3157 | BlockDriverState *bs; |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3158 | BlockDriverState *iter; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3159 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3160 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3161 | Error *local_err = NULL; |
| 3162 | /* This will be part of the QMP command, if/when the |
| 3163 | * BlockdevOnError change for blkmirror makes it in |
| 3164 | */ |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 3165 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3166 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 3167 | if (!has_speed) { |
| 3168 | speed = 0; |
| 3169 | } |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3170 | if (!has_filter_node_name) { |
| 3171 | filter_node_name = NULL; |
| 3172 | } |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 3173 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3174 | /* Important Note: |
| 3175 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 3176 | * live commit feature versions; for this to work, we must make sure to |
| 3177 | * perform the device lookup before any generic errors that may occur in a |
| 3178 | * scenario in which all optional arguments are omitted. */ |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3179 | bs = qmp_get_root_bs(device, &local_err); |
| 3180 | if (!bs) { |
| 3181 | bs = bdrv_lookup_bs(device, device, NULL); |
| 3182 | if (!bs) { |
| 3183 | error_free(local_err); |
| 3184 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3185 | "Device '%s' not found", device); |
| 3186 | } else { |
| 3187 | error_propagate(errp, local_err); |
| 3188 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3189 | return; |
| 3190 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3191 | |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3192 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3193 | aio_context_acquire(aio_context); |
| 3194 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3195 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3196 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 3197 | } |
| 3198 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3199 | /* default top_bs is the active layer */ |
| 3200 | top_bs = bs; |
| 3201 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3202 | if (has_top && top) { |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3203 | if (strcmp(bs->filename, top) != 0) { |
| 3204 | top_bs = bdrv_find_backing_image(bs, top); |
| 3205 | } |
| 3206 | } |
| 3207 | |
| 3208 | if (top_bs == NULL) { |
| 3209 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3210 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3211 | } |
| 3212 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3213 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 3214 | |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3215 | if (has_base && base) { |
| 3216 | base_bs = bdrv_find_backing_image(top_bs, base); |
| 3217 | } else { |
| 3218 | base_bs = bdrv_find_base(top_bs); |
| 3219 | } |
| 3220 | |
| 3221 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3222 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3223 | goto out; |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3224 | } |
| 3225 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3226 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 3227 | |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3228 | for (iter = top_bs; iter != backing_bs(base_bs); iter = backing_bs(iter)) { |
| 3229 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 3230 | goto out; |
| 3231 | } |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3232 | } |
| 3233 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3234 | /* Do not allow attempts to commit an image into itself */ |
| 3235 | if (top_bs == base_bs) { |
| 3236 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3237 | goto out; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3238 | } |
| 3239 | |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3240 | if (top_bs == bs) { |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3241 | if (has_backing_file) { |
| 3242 | error_setg(errp, "'backing-file' specified," |
| 3243 | " but 'top' is the active layer"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3244 | goto out; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3245 | } |
John Snow | 47970df | 2016-10-27 12:06:57 -0400 | [diff] [blame] | 3246 | commit_active_start(has_job_id ? job_id : NULL, bs, base_bs, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3247 | BLOCK_JOB_DEFAULT, speed, on_error, |
Fam Zheng | 78bbd91 | 2017-04-21 20:27:04 +0800 | [diff] [blame] | 3248 | filter_node_name, NULL, NULL, false, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3249 | } else { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3250 | BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); |
| 3251 | if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 3252 | goto out; |
| 3253 | } |
Alberto Garcia | fd62c60 | 2016-07-05 17:29:00 +0300 | [diff] [blame] | 3254 | commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, speed, |
John Snow | 8254b6d | 2016-10-27 12:06:58 -0400 | [diff] [blame] | 3255 | on_error, has_backing_file ? backing_file : NULL, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3256 | filter_node_name, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3257 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3258 | if (local_err != NULL) { |
| 3259 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3260 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3261 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3262 | |
| 3263 | out: |
| 3264 | aio_context_release(aio_context); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3265 | } |
| 3266 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3267 | static BlockJob *do_drive_backup(DriveBackup *backup, BlockJobTxn *txn, |
| 3268 | Error **errp) |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3269 | { |
| 3270 | BlockDriverState *bs; |
| 3271 | BlockDriverState *target_bs; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3272 | BlockDriverState *source = NULL; |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3273 | BlockJob *job = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3274 | BdrvDirtyBitmap *bmap = NULL; |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3275 | AioContext *aio_context; |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3276 | QDict *options = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3277 | Error *local_err = NULL; |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3278 | int flags, job_flags = BLOCK_JOB_DEFAULT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3279 | int64_t size; |
Fam Zheng | fc0932f | 2017-05-03 00:35:53 +0800 | [diff] [blame] | 3280 | bool set_backing_hd = false; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3281 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3282 | if (!backup->has_speed) { |
| 3283 | backup->speed = 0; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3284 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3285 | if (!backup->has_on_source_error) { |
| 3286 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3287 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3288 | if (!backup->has_on_target_error) { |
| 3289 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3290 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3291 | if (!backup->has_mode) { |
| 3292 | backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 3293 | } |
| 3294 | if (!backup->has_job_id) { |
| 3295 | backup->job_id = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3296 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3297 | if (!backup->has_auto_finalize) { |
| 3298 | backup->auto_finalize = true; |
| 3299 | } |
| 3300 | if (!backup->has_auto_dismiss) { |
| 3301 | backup->auto_dismiss = true; |
| 3302 | } |
Pavel Butsykin | 13b9414 | 2016-07-22 11:17:52 +0300 | [diff] [blame] | 3303 | if (!backup->has_compress) { |
| 3304 | backup->compress = false; |
| 3305 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3306 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3307 | bs = qmp_get_root_bs(backup->device, errp); |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3308 | if (!bs) { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3309 | return NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3310 | } |
| 3311 | |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3312 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3313 | aio_context_acquire(aio_context); |
| 3314 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3315 | if (!backup->has_format) { |
| 3316 | backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ? |
| 3317 | NULL : (char*) bs->drv->format_name; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3318 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3319 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3320 | /* Early check to avoid creating target */ |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 3321 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3322 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3323 | } |
| 3324 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3325 | flags = bs->open_flags | BDRV_O_RDWR; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3326 | |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3327 | /* See if we have a backing HD we can use to create our new image |
| 3328 | * on top of. */ |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3329 | if (backup->sync == MIRROR_SYNC_MODE_TOP) { |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3330 | source = backing_bs(bs); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3331 | if (!source) { |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3332 | backup->sync = MIRROR_SYNC_MODE_FULL; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3333 | } |
| 3334 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3335 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3336 | source = bs; |
Fam Zheng | fc0932f | 2017-05-03 00:35:53 +0800 | [diff] [blame] | 3337 | flags |= BDRV_O_NO_BACKING; |
| 3338 | set_backing_hd = true; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3339 | } |
| 3340 | |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3341 | size = bdrv_getlength(bs); |
| 3342 | if (size < 0) { |
| 3343 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3344 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3345 | } |
| 3346 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3347 | if (backup->mode != NEW_IMAGE_MODE_EXISTING) { |
| 3348 | assert(backup->format); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3349 | if (source) { |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3350 | bdrv_img_create(backup->target, backup->format, source->filename, |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3351 | source->drv->format_name, NULL, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3352 | size, flags, false, &local_err); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3353 | } else { |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3354 | bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3355 | size, flags, false, &local_err); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3356 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3357 | } |
| 3358 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3359 | if (local_err) { |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3360 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3361 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3362 | } |
| 3363 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3364 | if (backup->format) { |
Fam Zheng | fc0932f | 2017-05-03 00:35:53 +0800 | [diff] [blame] | 3365 | if (!options) { |
| 3366 | options = qdict_new(); |
| 3367 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3368 | qdict_put_str(options, "driver", backup->format); |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3369 | } |
| 3370 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3371 | target_bs = bdrv_open(backup->target, NULL, options, flags, errp); |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 3372 | if (!target_bs) { |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3373 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3374 | } |
| 3375 | |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3376 | bdrv_set_aio_context(target_bs, aio_context); |
| 3377 | |
Fam Zheng | fc0932f | 2017-05-03 00:35:53 +0800 | [diff] [blame] | 3378 | if (set_backing_hd) { |
| 3379 | bdrv_set_backing_hd(target_bs, source, &local_err); |
| 3380 | if (local_err) { |
| 3381 | bdrv_unref(target_bs); |
| 3382 | goto out; |
| 3383 | } |
| 3384 | } |
| 3385 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3386 | if (backup->has_bitmap) { |
| 3387 | bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3388 | if (!bmap) { |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3389 | error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap); |
Max Reitz | 0702d3d | 2015-11-09 23:39:10 +0100 | [diff] [blame] | 3390 | bdrv_unref(target_bs); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3391 | goto out; |
| 3392 | } |
Vladimir Sementsov-Ogievskiy | 4f43e95 | 2018-03-13 15:34:00 -0400 | [diff] [blame] | 3393 | if (bdrv_dirty_bitmap_qmp_locked(bmap)) { |
| 3394 | error_setg(errp, |
| 3395 | "Bitmap '%s' is currently locked and cannot be used for " |
| 3396 | "backup", backup->bitmap); |
| 3397 | goto out; |
| 3398 | } |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3399 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3400 | if (!backup->auto_finalize) { |
| 3401 | job_flags |= BLOCK_JOB_MANUAL_FINALIZE; |
| 3402 | } |
| 3403 | if (!backup->auto_dismiss) { |
| 3404 | job_flags |= BLOCK_JOB_MANUAL_DISMISS; |
| 3405 | } |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3406 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3407 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
| 3408 | backup->sync, bmap, backup->compress, |
| 3409 | backup->on_source_error, backup->on_target_error, |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3410 | job_flags, NULL, NULL, txn, &local_err); |
Kevin Wolf | 5c438bc | 2016-04-14 13:09:53 +0200 | [diff] [blame] | 3411 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3412 | if (local_err != NULL) { |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3413 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3414 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3415 | } |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3416 | |
| 3417 | out: |
| 3418 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3419 | return job; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3420 | } |
| 3421 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3422 | void qmp_drive_backup(DriveBackup *arg, Error **errp) |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3423 | { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3424 | |
| 3425 | BlockJob *job; |
| 3426 | job = do_drive_backup(arg, NULL, errp); |
| 3427 | if (job) { |
| 3428 | block_job_start(job); |
| 3429 | } |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3430 | } |
| 3431 | |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3432 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
| 3433 | { |
Alberto Garcia | d5a8ee6 | 2015-04-17 14:52:43 +0300 | [diff] [blame] | 3434 | return bdrv_named_nodes_list(errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3435 | } |
| 3436 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3437 | BlockJob *do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, |
| 3438 | Error **errp) |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3439 | { |
| 3440 | BlockDriverState *bs; |
| 3441 | BlockDriverState *target_bs; |
| 3442 | Error *local_err = NULL; |
| 3443 | AioContext *aio_context; |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3444 | BlockJob *job = NULL; |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3445 | int job_flags = BLOCK_JOB_DEFAULT; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3446 | |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3447 | if (!backup->has_speed) { |
| 3448 | backup->speed = 0; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3449 | } |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3450 | if (!backup->has_on_source_error) { |
| 3451 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3452 | } |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3453 | if (!backup->has_on_target_error) { |
| 3454 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3455 | } |
| 3456 | if (!backup->has_job_id) { |
| 3457 | backup->job_id = NULL; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3458 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3459 | if (!backup->has_auto_finalize) { |
| 3460 | backup->auto_finalize = true; |
| 3461 | } |
| 3462 | if (!backup->has_auto_dismiss) { |
| 3463 | backup->auto_dismiss = true; |
| 3464 | } |
Pavel Butsykin | 3b7b123 | 2016-07-22 11:17:53 +0300 | [diff] [blame] | 3465 | if (!backup->has_compress) { |
| 3466 | backup->compress = false; |
| 3467 | } |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3468 | |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3469 | bs = qmp_get_root_bs(backup->device, errp); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3470 | if (!bs) { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3471 | return NULL; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3472 | } |
| 3473 | |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3474 | aio_context = bdrv_get_aio_context(bs); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3475 | aio_context_acquire(aio_context); |
| 3476 | |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3477 | target_bs = bdrv_lookup_bs(backup->target, backup->target, errp); |
Fam Zheng | 0d97891 | 2016-05-23 10:19:35 +0800 | [diff] [blame] | 3478 | if (!target_bs) { |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3479 | goto out; |
| 3480 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3481 | |
Fam Zheng | efd7556 | 2016-05-23 10:19:36 +0800 | [diff] [blame] | 3482 | if (bdrv_get_aio_context(target_bs) != aio_context) { |
| 3483 | if (!bdrv_has_blk(target_bs)) { |
| 3484 | /* The target BDS is not attached, we can safely move it to another |
| 3485 | * AioContext. */ |
| 3486 | bdrv_set_aio_context(target_bs, aio_context); |
| 3487 | } else { |
| 3488 | error_setg(errp, "Target is attached to a different thread from " |
| 3489 | "source."); |
| 3490 | goto out; |
| 3491 | } |
| 3492 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3493 | if (!backup->auto_finalize) { |
| 3494 | job_flags |= BLOCK_JOB_MANUAL_FINALIZE; |
| 3495 | } |
| 3496 | if (!backup->auto_dismiss) { |
| 3497 | job_flags |= BLOCK_JOB_MANUAL_DISMISS; |
| 3498 | } |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3499 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
| 3500 | backup->sync, NULL, backup->compress, |
| 3501 | backup->on_source_error, backup->on_target_error, |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3502 | job_flags, NULL, NULL, txn, &local_err); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3503 | if (local_err != NULL) { |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3504 | error_propagate(errp, local_err); |
| 3505 | } |
| 3506 | out: |
| 3507 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3508 | return job; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3509 | } |
| 3510 | |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3511 | void qmp_blockdev_backup(BlockdevBackup *arg, Error **errp) |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3512 | { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3513 | BlockJob *job; |
| 3514 | job = do_blockdev_backup(arg, NULL, errp); |
| 3515 | if (job) { |
| 3516 | block_job_start(job); |
| 3517 | } |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3518 | } |
| 3519 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3520 | /* Parameter check and block job starting for drive mirroring. |
| 3521 | * Caller should hold @device and @target's aio context (must be the same). |
| 3522 | **/ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3523 | static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3524 | BlockDriverState *target, |
| 3525 | bool has_replaces, const char *replaces, |
| 3526 | enum MirrorSyncMode sync, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3527 | BlockMirrorBackingMode backing_mode, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3528 | bool has_speed, int64_t speed, |
| 3529 | bool has_granularity, uint32_t granularity, |
| 3530 | bool has_buf_size, int64_t buf_size, |
| 3531 | bool has_on_source_error, |
| 3532 | BlockdevOnError on_source_error, |
| 3533 | bool has_on_target_error, |
| 3534 | BlockdevOnError on_target_error, |
| 3535 | bool has_unmap, bool unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3536 | bool has_filter_node_name, |
| 3537 | const char *filter_node_name, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3538 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3539 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3540 | |
| 3541 | if (!has_speed) { |
| 3542 | speed = 0; |
| 3543 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3544 | if (!has_on_source_error) { |
| 3545 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3546 | } |
| 3547 | if (!has_on_target_error) { |
| 3548 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3549 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3550 | if (!has_granularity) { |
| 3551 | granularity = 0; |
| 3552 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3553 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 3554 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3555 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 3556 | if (!has_unmap) { |
| 3557 | unmap = true; |
| 3558 | } |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3559 | if (!has_filter_node_name) { |
| 3560 | filter_node_name = NULL; |
| 3561 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3562 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3563 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3564 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3565 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3566 | return; |
| 3567 | } |
| 3568 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3569 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3570 | "power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3571 | return; |
| 3572 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3573 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3574 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3575 | return; |
| 3576 | } |
Fam Zheng | e40e502 | 2015-12-24 12:45:04 +0800 | [diff] [blame] | 3577 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
| 3578 | return; |
| 3579 | } |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3580 | |
| 3581 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { |
| 3582 | sync = MIRROR_SYNC_MODE_FULL; |
| 3583 | } |
| 3584 | |
| 3585 | /* pass the node name to replace to mirror start since it's loose coupling |
| 3586 | * and will allow to check whether the node still exist at mirror completion |
| 3587 | */ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3588 | mirror_start(job_id, bs, target, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3589 | has_replaces ? replaces : NULL, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3590 | speed, granularity, buf_size, sync, backing_mode, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3591 | on_source_error, on_target_error, unmap, filter_node_name, |
| 3592 | errp); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3593 | } |
| 3594 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3595 | void qmp_drive_mirror(DriveMirror *arg, Error **errp) |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3596 | { |
| 3597 | BlockDriverState *bs; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3598 | BlockDriverState *source, *target_bs; |
| 3599 | AioContext *aio_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3600 | BlockMirrorBackingMode backing_mode; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3601 | Error *local_err = NULL; |
| 3602 | QDict *options = NULL; |
| 3603 | int flags; |
| 3604 | int64_t size; |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3605 | const char *format = arg->format; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3606 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3607 | bs = qmp_get_root_bs(arg->device, errp); |
| 3608 | if (!bs) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3609 | return; |
| 3610 | } |
| 3611 | |
Paolo Bonzini | cb2af91 | 2018-02-07 17:29:20 +0100 | [diff] [blame] | 3612 | /* Early check to avoid creating target */ |
| 3613 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3614 | return; |
| 3615 | } |
| 3616 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3617 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3618 | aio_context_acquire(aio_context); |
| 3619 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3620 | if (!arg->has_mode) { |
| 3621 | arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3622 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3623 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3624 | if (!arg->has_format) { |
| 3625 | format = (arg->mode == NEW_IMAGE_MODE_EXISTING |
| 3626 | ? NULL : bs->drv->format_name); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3627 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3628 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3629 | flags = bs->open_flags | BDRV_O_RDWR; |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3630 | source = backing_bs(bs); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3631 | if (!source && arg->sync == MIRROR_SYNC_MODE_TOP) { |
| 3632 | arg->sync = MIRROR_SYNC_MODE_FULL; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3633 | } |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3634 | if (arg->sync == MIRROR_SYNC_MODE_NONE) { |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 3635 | source = bs; |
| 3636 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3637 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3638 | size = bdrv_getlength(bs); |
| 3639 | if (size < 0) { |
| 3640 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3641 | goto out; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3642 | } |
| 3643 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3644 | if (arg->has_replaces) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3645 | BlockDriverState *to_replace_bs; |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3646 | AioContext *replace_aio_context; |
| 3647 | int64_t replace_size; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3648 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3649 | if (!arg->has_node_name) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3650 | error_setg(errp, "a node-name must be provided when replacing a" |
| 3651 | " named node of the graph"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3652 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3653 | } |
| 3654 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3655 | to_replace_bs = check_to_replace_node(bs, arg->replaces, &local_err); |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3656 | |
| 3657 | if (!to_replace_bs) { |
| 3658 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3659 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3660 | } |
| 3661 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3662 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
| 3663 | aio_context_acquire(replace_aio_context); |
| 3664 | replace_size = bdrv_getlength(to_replace_bs); |
| 3665 | aio_context_release(replace_aio_context); |
| 3666 | |
| 3667 | if (size != replace_size) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3668 | error_setg(errp, "cannot replace image with a mirror image of " |
| 3669 | "different size"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3670 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3671 | } |
| 3672 | } |
| 3673 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3674 | if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3675 | backing_mode = MIRROR_SOURCE_BACKING_CHAIN; |
| 3676 | } else { |
| 3677 | backing_mode = MIRROR_OPEN_BACKING_CHAIN; |
| 3678 | } |
| 3679 | |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3680 | /* Don't open backing image in create() */ |
| 3681 | flags |= BDRV_O_NO_BACKING; |
| 3682 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3683 | if ((arg->sync == MIRROR_SYNC_MODE_FULL || !source) |
| 3684 | && arg->mode != NEW_IMAGE_MODE_EXISTING) |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 3685 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3686 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3687 | assert(format); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3688 | bdrv_img_create(arg->target, format, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3689 | NULL, NULL, NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3690 | } else { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3691 | switch (arg->mode) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3692 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3693 | break; |
| 3694 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 3695 | /* create new image with backing file */ |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3696 | bdrv_img_create(arg->target, format, |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3697 | source->filename, |
| 3698 | source->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3699 | NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3700 | break; |
| 3701 | default: |
| 3702 | abort(); |
| 3703 | } |
| 3704 | } |
| 3705 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3706 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3707 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3708 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3709 | } |
| 3710 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3711 | options = qdict_new(); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3712 | if (arg->has_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3713 | qdict_put_str(options, "node-name", arg->node_name); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3714 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3715 | if (format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3716 | qdict_put_str(options, "driver", format); |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3717 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3718 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3719 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3720 | * file. |
| 3721 | */ |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3722 | target_bs = bdrv_open(arg->target, NULL, options, flags, errp); |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 3723 | if (!target_bs) { |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3724 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3725 | } |
| 3726 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3727 | bdrv_set_aio_context(target_bs, aio_context); |
| 3728 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3729 | blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs, |
| 3730 | arg->has_replaces, arg->replaces, arg->sync, |
| 3731 | backing_mode, arg->has_speed, arg->speed, |
| 3732 | arg->has_granularity, arg->granularity, |
| 3733 | arg->has_buf_size, arg->buf_size, |
| 3734 | arg->has_on_source_error, arg->on_source_error, |
| 3735 | arg->has_on_target_error, arg->on_target_error, |
| 3736 | arg->has_unmap, arg->unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3737 | false, NULL, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3738 | &local_err); |
Kevin Wolf | e253f4b | 2016-04-12 16:17:41 +0200 | [diff] [blame] | 3739 | bdrv_unref(target_bs); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 3740 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3741 | out: |
| 3742 | aio_context_release(aio_context); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3743 | } |
| 3744 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3745 | void qmp_blockdev_mirror(bool has_job_id, const char *job_id, |
| 3746 | const char *device, const char *target, |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3747 | bool has_replaces, const char *replaces, |
| 3748 | MirrorSyncMode sync, |
| 3749 | bool has_speed, int64_t speed, |
| 3750 | bool has_granularity, uint32_t granularity, |
| 3751 | bool has_buf_size, int64_t buf_size, |
| 3752 | bool has_on_source_error, |
| 3753 | BlockdevOnError on_source_error, |
| 3754 | bool has_on_target_error, |
| 3755 | BlockdevOnError on_target_error, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3756 | bool has_filter_node_name, |
| 3757 | const char *filter_node_name, |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3758 | Error **errp) |
| 3759 | { |
| 3760 | BlockDriverState *bs; |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3761 | BlockDriverState *target_bs; |
| 3762 | AioContext *aio_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3763 | BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3764 | Error *local_err = NULL; |
| 3765 | |
Kevin Wolf | 07eec65 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3766 | bs = qmp_get_root_bs(device, errp); |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3767 | if (!bs) { |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3768 | return; |
| 3769 | } |
| 3770 | |
| 3771 | target_bs = bdrv_lookup_bs(target, target, errp); |
| 3772 | if (!target_bs) { |
| 3773 | return; |
| 3774 | } |
| 3775 | |
| 3776 | aio_context = bdrv_get_aio_context(bs); |
| 3777 | aio_context_acquire(aio_context); |
| 3778 | |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3779 | bdrv_set_aio_context(target_bs, aio_context); |
| 3780 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3781 | blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3782 | has_replaces, replaces, sync, backing_mode, |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3783 | has_speed, speed, |
| 3784 | has_granularity, granularity, |
| 3785 | has_buf_size, buf_size, |
| 3786 | has_on_source_error, on_source_error, |
| 3787 | has_on_target_error, on_target_error, |
| 3788 | true, true, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3789 | has_filter_node_name, filter_node_name, |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3790 | &local_err); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 3791 | error_propagate(errp, local_err); |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3792 | |
| 3793 | aio_context_release(aio_context); |
| 3794 | } |
| 3795 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3796 | /* Get a block job using its ID and acquire its AioContext */ |
| 3797 | static BlockJob *find_block_job(const char *id, AioContext **aio_context, |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3798 | Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3799 | { |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3800 | BlockJob *job; |
| 3801 | |
| 3802 | assert(id != NULL); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3803 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3804 | *aio_context = NULL; |
| 3805 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3806 | job = block_job_get(id); |
| 3807 | |
| 3808 | if (!job) { |
| 3809 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 3810 | "Block job '%s' not found", id); |
| 3811 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3812 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3813 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3814 | *aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3815 | aio_context_acquire(*aio_context); |
| 3816 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3817 | return job; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3818 | } |
| 3819 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3820 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3821 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3822 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3823 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3824 | |
| 3825 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3826 | return; |
| 3827 | } |
| 3828 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3829 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3830 | aio_context_release(aio_context); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3831 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3832 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3833 | void qmp_block_job_cancel(const char *device, |
| 3834 | bool has_force, bool force, Error **errp) |
| 3835 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3836 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3837 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3838 | |
| 3839 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3840 | return; |
| 3841 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3842 | |
| 3843 | if (!has_force) { |
| 3844 | force = false; |
| 3845 | } |
| 3846 | |
John Snow | 0df4ba5 | 2016-10-27 12:06:59 -0400 | [diff] [blame] | 3847 | if (block_job_user_paused(job) && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 3848 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 3849 | device); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3850 | goto out; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3851 | } |
| 3852 | |
| 3853 | trace_qmp_block_job_cancel(job); |
Liang Li | b76e445 | 2018-03-13 08:12:16 -0400 | [diff] [blame] | 3854 | block_job_user_cancel(job, force, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3855 | out: |
| 3856 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3857 | } |
| 3858 | |
| 3859 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3860 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3861 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3862 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3863 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3864 | if (!job) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3865 | return; |
| 3866 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3867 | |
| 3868 | trace_qmp_block_job_pause(job); |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3869 | block_job_user_pause(job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3870 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3871 | } |
| 3872 | |
| 3873 | void qmp_block_job_resume(const char *device, Error **errp) |
| 3874 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3875 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3876 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3877 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3878 | if (!job) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 3879 | return; |
| 3880 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3881 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3882 | trace_qmp_block_job_resume(job); |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3883 | block_job_user_resume(job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3884 | aio_context_release(aio_context); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3885 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3886 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3887 | void qmp_block_job_complete(const char *device, Error **errp) |
| 3888 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3889 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3890 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3891 | |
| 3892 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3893 | return; |
| 3894 | } |
| 3895 | |
| 3896 | trace_qmp_block_job_complete(job); |
| 3897 | block_job_complete(job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3898 | aio_context_release(aio_context); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3899 | } |
| 3900 | |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3901 | void qmp_block_job_finalize(const char *id, Error **errp) |
| 3902 | { |
| 3903 | AioContext *aio_context; |
| 3904 | BlockJob *job = find_block_job(id, &aio_context, errp); |
| 3905 | |
| 3906 | if (!job) { |
| 3907 | return; |
| 3908 | } |
| 3909 | |
| 3910 | trace_qmp_block_job_finalize(job); |
| 3911 | block_job_finalize(job, errp); |
| 3912 | aio_context_release(aio_context); |
| 3913 | } |
| 3914 | |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3915 | void qmp_block_job_dismiss(const char *id, Error **errp) |
| 3916 | { |
| 3917 | AioContext *aio_context; |
| 3918 | BlockJob *job = find_block_job(id, &aio_context, errp); |
| 3919 | |
| 3920 | if (!job) { |
| 3921 | return; |
| 3922 | } |
| 3923 | |
| 3924 | trace_qmp_block_job_dismiss(job); |
| 3925 | block_job_dismiss(&job, errp); |
| 3926 | aio_context_release(aio_context); |
| 3927 | } |
| 3928 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3929 | void qmp_change_backing_file(const char *device, |
| 3930 | const char *image_node_name, |
| 3931 | const char *backing_file, |
| 3932 | Error **errp) |
| 3933 | { |
| 3934 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3935 | AioContext *aio_context; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3936 | BlockDriverState *image_bs = NULL; |
| 3937 | Error *local_err = NULL; |
| 3938 | bool ro; |
| 3939 | int open_flags; |
| 3940 | int ret; |
| 3941 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3942 | bs = qmp_get_root_bs(device, errp); |
| 3943 | if (!bs) { |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3944 | return; |
| 3945 | } |
| 3946 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3947 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3948 | aio_context_acquire(aio_context); |
| 3949 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3950 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 3951 | if (local_err) { |
| 3952 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3953 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3954 | } |
| 3955 | |
| 3956 | if (!image_bs) { |
| 3957 | error_setg(errp, "image file not found"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3958 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3959 | } |
| 3960 | |
| 3961 | if (bdrv_find_base(image_bs) == image_bs) { |
| 3962 | error_setg(errp, "not allowing backing file change on an image " |
| 3963 | "without a backing file"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3964 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3965 | } |
| 3966 | |
| 3967 | /* even though we are not necessarily operating on bs, we need it to |
| 3968 | * determine if block ops are currently prohibited on the chain */ |
| 3969 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3970 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3971 | } |
| 3972 | |
| 3973 | /* final sanity check */ |
| 3974 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 3975 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 3976 | device); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3977 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3978 | } |
| 3979 | |
| 3980 | /* if not r/w, reopen to make r/w */ |
| 3981 | open_flags = image_bs->open_flags; |
| 3982 | ro = bdrv_is_read_only(image_bs); |
| 3983 | |
| 3984 | if (ro) { |
| 3985 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); |
| 3986 | if (local_err) { |
| 3987 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3988 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3989 | } |
| 3990 | } |
| 3991 | |
| 3992 | ret = bdrv_change_backing_file(image_bs, backing_file, |
| 3993 | image_bs->drv ? image_bs->drv->format_name : ""); |
| 3994 | |
| 3995 | if (ret < 0) { |
| 3996 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 3997 | backing_file); |
| 3998 | /* don't exit here, so we can try to restore open flags if |
| 3999 | * appropriate */ |
| 4000 | } |
| 4001 | |
| 4002 | if (ro) { |
| 4003 | bdrv_reopen(image_bs, open_flags, &local_err); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 4004 | error_propagate(errp, local_err); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4005 | } |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4006 | |
| 4007 | out: |
| 4008 | aio_context_release(aio_context); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4009 | } |
| 4010 | |
Kevin Wolf | abb21ac3 | 2016-02-23 17:33:24 +0100 | [diff] [blame] | 4011 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
| 4012 | { |
| 4013 | QemuOpts *opts; |
| 4014 | QDict *qdict; |
| 4015 | Error *local_err = NULL; |
| 4016 | |
| 4017 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); |
| 4018 | if (!opts) { |
| 4019 | return; |
| 4020 | } |
| 4021 | |
| 4022 | qdict = qemu_opts_to_qdict(opts, NULL); |
| 4023 | |
| 4024 | if (!qdict_get_try_str(qdict, "node-name")) { |
Kevin Wolf | f8746fb | 2016-03-16 11:14:31 +0100 | [diff] [blame] | 4025 | QDECREF(qdict); |
Kevin Wolf | abb21ac3 | 2016-02-23 17:33:24 +0100 | [diff] [blame] | 4026 | error_report("'node-name' needs to be specified"); |
| 4027 | goto out; |
| 4028 | } |
| 4029 | |
| 4030 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); |
| 4031 | if (!bs) { |
| 4032 | error_report_err(local_err); |
| 4033 | goto out; |
| 4034 | } |
| 4035 | |
| 4036 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 4037 | |
| 4038 | out: |
| 4039 | qemu_opts_del(opts); |
| 4040 | } |
| 4041 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4042 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 4043 | { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 4044 | BlockDriverState *bs; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4045 | QObject *obj; |
Daniel P. Berrange | 7d5e199 | 2016-09-30 15:45:28 +0100 | [diff] [blame] | 4046 | Visitor *v = qobject_output_visitor_new(&obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4047 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4048 | Error *local_err = NULL; |
| 4049 | |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4050 | visit_type_BlockdevOptions(v, NULL, &options, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 4051 | if (local_err) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4052 | error_propagate(errp, local_err); |
| 4053 | goto fail; |
| 4054 | } |
| 4055 | |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4056 | visit_complete(v, &obj); |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 4057 | qdict = qobject_to(QDict, obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4058 | |
| 4059 | qdict_flatten(qdict); |
| 4060 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4061 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 4062 | error_setg(errp, "'node-name' must be specified for the root node"); |
| 4063 | goto fail; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4064 | } |
| 4065 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4066 | bs = bds_tree_init(qdict, errp); |
| 4067 | if (!bs) { |
| 4068 | goto fail; |
| 4069 | } |
| 4070 | |
| 4071 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 4072 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4073 | fail: |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4074 | visit_free(v); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4075 | } |
| 4076 | |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 4077 | void qmp_blockdev_del(const char *node_name, Error **errp) |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4078 | { |
| 4079 | AioContext *aio_context; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4080 | BlockDriverState *bs; |
| 4081 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4082 | bs = bdrv_find_node(node_name); |
| 4083 | if (!bs) { |
| 4084 | error_setg(errp, "Cannot find node %s", node_name); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4085 | return; |
| 4086 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4087 | if (bdrv_has_blk(bs)) { |
| 4088 | error_setg(errp, "Node %s is in use", node_name); |
| 4089 | return; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4090 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4091 | aio_context = bdrv_get_aio_context(bs); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4092 | aio_context_acquire(aio_context); |
| 4093 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4094 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
| 4095 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4096 | } |
| 4097 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4098 | if (!bs->monitor_list.tqe_prev) { |
| 4099 | error_setg(errp, "Node %s is not owned by the monitor", |
| 4100 | bs->node_name); |
| 4101 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4102 | } |
| 4103 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4104 | if (bs->refcnt > 1) { |
| 4105 | error_setg(errp, "Block device %s is in use", |
| 4106 | bdrv_get_device_or_node_name(bs)); |
| 4107 | goto out; |
| 4108 | } |
| 4109 | |
| 4110 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
| 4111 | bdrv_unref(bs); |
| 4112 | |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4113 | out: |
| 4114 | aio_context_release(aio_context); |
| 4115 | } |
| 4116 | |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 4117 | static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, |
| 4118 | const char *child_name) |
| 4119 | { |
| 4120 | BdrvChild *child; |
| 4121 | |
| 4122 | QLIST_FOREACH(child, &parent_bs->children, next) { |
| 4123 | if (strcmp(child->name, child_name) == 0) { |
| 4124 | return child; |
| 4125 | } |
| 4126 | } |
| 4127 | |
| 4128 | return NULL; |
| 4129 | } |
| 4130 | |
| 4131 | void qmp_x_blockdev_change(const char *parent, bool has_child, |
| 4132 | const char *child, bool has_node, |
| 4133 | const char *node, Error **errp) |
| 4134 | { |
| 4135 | BlockDriverState *parent_bs, *new_bs = NULL; |
| 4136 | BdrvChild *p_child; |
| 4137 | |
| 4138 | parent_bs = bdrv_lookup_bs(parent, parent, errp); |
| 4139 | if (!parent_bs) { |
| 4140 | return; |
| 4141 | } |
| 4142 | |
| 4143 | if (has_child == has_node) { |
| 4144 | if (has_child) { |
| 4145 | error_setg(errp, "The parameters child and node are in conflict"); |
| 4146 | } else { |
| 4147 | error_setg(errp, "Either child or node must be specified"); |
| 4148 | } |
| 4149 | return; |
| 4150 | } |
| 4151 | |
| 4152 | if (has_child) { |
| 4153 | p_child = bdrv_find_child(parent_bs, child); |
| 4154 | if (!p_child) { |
| 4155 | error_setg(errp, "Node '%s' does not have child '%s'", |
| 4156 | parent, child); |
| 4157 | return; |
| 4158 | } |
| 4159 | bdrv_del_child(parent_bs, p_child, errp); |
| 4160 | } |
| 4161 | |
| 4162 | if (has_node) { |
| 4163 | new_bs = bdrv_find_node(node); |
| 4164 | if (!new_bs) { |
| 4165 | error_setg(errp, "Node '%s' not found", node); |
| 4166 | return; |
| 4167 | } |
| 4168 | bdrv_add_child(parent_bs, new_bs, errp); |
| 4169 | } |
| 4170 | } |
| 4171 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4172 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 4173 | { |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4174 | BlockJobInfoList *head = NULL, **p_next = &head; |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4175 | BlockJob *job; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4176 | |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4177 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4178 | BlockJobInfoList *elem; |
| 4179 | AioContext *aio_context; |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4180 | |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4181 | if (block_job_is_internal(job)) { |
| 4182 | continue; |
| 4183 | } |
| 4184 | elem = g_new0(BlockJobInfoList, 1); |
| 4185 | aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4186 | aio_context_acquire(aio_context); |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4187 | elem->value = block_job_query(job, errp); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4188 | aio_context_release(aio_context); |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4189 | if (!elem->value) { |
| 4190 | g_free(elem); |
| 4191 | qapi_free_BlockJobInfoList(head); |
| 4192 | return NULL; |
| 4193 | } |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4194 | *p_next = elem; |
| 4195 | p_next = &elem->next; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4196 | } |
| 4197 | |
| 4198 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4199 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4200 | |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4201 | void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 4202 | bool has_force, bool force, Error **errp) |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4203 | { |
| 4204 | AioContext *old_context; |
| 4205 | AioContext *new_context; |
| 4206 | BlockDriverState *bs; |
| 4207 | |
| 4208 | bs = bdrv_find_node(node_name); |
| 4209 | if (!bs) { |
| 4210 | error_setg(errp, "Cannot find node %s", node_name); |
| 4211 | return; |
| 4212 | } |
| 4213 | |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 4214 | /* Protects against accidents. */ |
| 4215 | if (!(has_force && force) && bdrv_has_blk(bs)) { |
| 4216 | error_setg(errp, "Node %s is associated with a BlockBackend and could " |
| 4217 | "be in use (use force=true to override this check)", |
| 4218 | node_name); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4219 | return; |
| 4220 | } |
| 4221 | |
| 4222 | if (iothread->type == QTYPE_QSTRING) { |
| 4223 | IOThread *obj = iothread_by_id(iothread->u.s); |
| 4224 | if (!obj) { |
| 4225 | error_setg(errp, "Cannot find iothread %s", iothread->u.s); |
| 4226 | return; |
| 4227 | } |
| 4228 | |
| 4229 | new_context = iothread_get_aio_context(obj); |
| 4230 | } else { |
| 4231 | new_context = qemu_get_aio_context(); |
| 4232 | } |
| 4233 | |
| 4234 | old_context = bdrv_get_aio_context(bs); |
| 4235 | aio_context_acquire(old_context); |
| 4236 | |
| 4237 | bdrv_set_aio_context(bs, new_context); |
| 4238 | |
| 4239 | aio_context_release(old_context); |
| 4240 | } |
| 4241 | |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4242 | void qmp_x_block_latency_histogram_set( |
| 4243 | const char *device, |
| 4244 | bool has_boundaries, uint64List *boundaries, |
| 4245 | bool has_boundaries_read, uint64List *boundaries_read, |
| 4246 | bool has_boundaries_write, uint64List *boundaries_write, |
| 4247 | bool has_boundaries_flush, uint64List *boundaries_flush, |
| 4248 | Error **errp) |
| 4249 | { |
| 4250 | BlockBackend *blk = blk_by_name(device); |
| 4251 | BlockAcctStats *stats; |
| 4252 | |
| 4253 | if (!blk) { |
| 4254 | error_setg(errp, "Device '%s' not found", device); |
| 4255 | return; |
| 4256 | } |
| 4257 | stats = blk_get_stats(blk); |
| 4258 | |
| 4259 | if (!has_boundaries && !has_boundaries_read && !has_boundaries_write && |
| 4260 | !has_boundaries_flush) |
| 4261 | { |
| 4262 | block_latency_histograms_clear(stats); |
| 4263 | return; |
| 4264 | } |
| 4265 | |
| 4266 | if (has_boundaries || has_boundaries_read) { |
| 4267 | block_latency_histogram_set( |
| 4268 | stats, BLOCK_ACCT_READ, |
| 4269 | has_boundaries_read ? boundaries_read : boundaries); |
| 4270 | } |
| 4271 | |
| 4272 | if (has_boundaries || has_boundaries_write) { |
| 4273 | block_latency_histogram_set( |
| 4274 | stats, BLOCK_ACCT_WRITE, |
| 4275 | has_boundaries_write ? boundaries_write : boundaries); |
| 4276 | } |
| 4277 | |
| 4278 | if (has_boundaries || has_boundaries_flush) { |
| 4279 | block_latency_histogram_set( |
| 4280 | stats, BLOCK_ACCT_FLUSH, |
| 4281 | has_boundaries_flush ? boundaries_flush : boundaries); |
| 4282 | } |
| 4283 | } |
| 4284 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4285 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4286 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4287 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4288 | .desc = { |
| 4289 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4290 | .name = "snapshot", |
| 4291 | .type = QEMU_OPT_BOOL, |
| 4292 | .help = "enable/disable snapshot mode", |
| 4293 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4294 | .name = "aio", |
| 4295 | .type = QEMU_OPT_STRING, |
| 4296 | .help = "host AIO implementation (threads, native)", |
| 4297 | },{ |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 4298 | .name = BDRV_OPT_CACHE_WB, |
| 4299 | .type = QEMU_OPT_BOOL, |
| 4300 | .help = "Enable writeback mode", |
| 4301 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4302 | .name = "format", |
| 4303 | .type = QEMU_OPT_STRING, |
| 4304 | .help = "disk format (raw, qcow2, ...)", |
| 4305 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4306 | .name = "rerror", |
| 4307 | .type = QEMU_OPT_STRING, |
| 4308 | .help = "read error action", |
| 4309 | },{ |
| 4310 | .name = "werror", |
| 4311 | .type = QEMU_OPT_STRING, |
| 4312 | .help = "write error action", |
| 4313 | },{ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 4314 | .name = BDRV_OPT_READ_ONLY, |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4315 | .type = QEMU_OPT_BOOL, |
| 4316 | .help = "open drive file as read-only", |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 4317 | }, |
| 4318 | |
| 4319 | THROTTLE_OPTS, |
| 4320 | |
| 4321 | { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 4322 | .name = "throttling.group", |
| 4323 | .type = QEMU_OPT_STRING, |
| 4324 | .help = "name of the block throttling group", |
| 4325 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4326 | .name = "copy-on-read", |
| 4327 | .type = QEMU_OPT_BOOL, |
| 4328 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 4329 | },{ |
| 4330 | .name = "detect-zeroes", |
| 4331 | .type = QEMU_OPT_STRING, |
| 4332 | .help = "try to optimize zero writes (off, on, unmap)", |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 4333 | },{ |
| 4334 | .name = "stats-account-invalid", |
| 4335 | .type = QEMU_OPT_BOOL, |
| 4336 | .help = "whether to account for invalid I/O operations " |
| 4337 | "in the statistics", |
| 4338 | },{ |
| 4339 | .name = "stats-account-failed", |
| 4340 | .type = QEMU_OPT_BOOL, |
| 4341 | .help = "whether to account for failed I/O operations " |
| 4342 | "in the statistics", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4343 | }, |
| 4344 | { /* end of list */ } |
| 4345 | }, |
| 4346 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4347 | |
| 4348 | QemuOptsList qemu_drive_opts = { |
| 4349 | .name = "drive", |
| 4350 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 4351 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 4352 | /* |
| 4353 | * no elements => accept any params |
| 4354 | * validation will happen later |
| 4355 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4356 | { /* end of list */ } |
| 4357 | }, |
| 4358 | }; |