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" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 43 | #include "qapi/qmp/types.h" |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 44 | #include "qapi-visit.h" |
Markus Armbruster | cc7a8ea | 2015-03-17 17:22:46 +0100 | [diff] [blame] | 45 | #include "qapi/qmp/qerror.h" |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 46 | #include "qapi/qmp-output-visitor.h" |
Peter Lieven | 9e7dac7 | 2014-08-13 19:20:17 +0200 | [diff] [blame] | 47 | #include "qapi/util.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 48 | #include "sysemu/sysemu.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 49 | #include "block/block_int.h" |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 50 | #include "qmp-commands.h" |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 51 | #include "trace.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 52 | #include "sysemu/arch_init.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 53 | #include "qemu/cutils.h" |
| 54 | #include "qemu/help_option.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 55 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 56 | static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
| 57 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); |
| 58 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 59 | static const char *const if_name[IF_COUNT] = { |
| 60 | [IF_NONE] = "none", |
| 61 | [IF_IDE] = "ide", |
| 62 | [IF_SCSI] = "scsi", |
| 63 | [IF_FLOPPY] = "floppy", |
| 64 | [IF_PFLASH] = "pflash", |
| 65 | [IF_MTD] = "mtd", |
| 66 | [IF_SD] = "sd", |
| 67 | [IF_VIRTIO] = "virtio", |
| 68 | [IF_XEN] = "xen", |
| 69 | }; |
| 70 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 71 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 72 | /* |
| 73 | * Do not change these numbers! They govern how drive option |
| 74 | * index maps to unit and bus. That mapping is ABI. |
| 75 | * |
Wei Jiangang | 547cb15 | 2016-04-26 18:12:43 +0800 | [diff] [blame^] | 76 | * All controllers used to implement if=T drives need to support |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 77 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 78 | * Otherwise, some index values map to "impossible" bus, unit |
| 79 | * values. |
| 80 | * |
| 81 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 82 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 83 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 84 | * the drive can't be set up. Regression. |
| 85 | */ |
| 86 | [IF_IDE] = 2, |
| 87 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 88 | }; |
| 89 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 90 | /** |
| 91 | * Boards may call this to offer board-by-board overrides |
| 92 | * of the default, global values. |
| 93 | */ |
| 94 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 95 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 96 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 97 | DriveInfo *dinfo; |
| 98 | |
| 99 | if (max_devs <= 0) { |
| 100 | return; |
| 101 | } |
| 102 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 103 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 104 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 105 | if (dinfo->type == type) { |
| 106 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 107 | " the %s interface, because a drive of that type has" |
| 108 | " already been added.\n", if_name[type]); |
| 109 | g_assert_not_reached(); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | if_max_devs[type] = max_devs; |
| 114 | } |
| 115 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 116 | /* |
| 117 | * We automatically delete the drive when a device using it gets |
| 118 | * unplugged. Questionable feature, but we can't just drop it. |
| 119 | * Device models call blockdev_mark_auto_del() to schedule the |
| 120 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 121 | * when deletion is actually safe. |
| 122 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 123 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 124 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 125 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 126 | BlockDriverState *bs = blk_bs(blk); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 127 | AioContext *aio_context; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 128 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 129 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 130 | return; |
| 131 | } |
| 132 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 133 | if (bs) { |
| 134 | aio_context = bdrv_get_aio_context(bs); |
| 135 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 136 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 137 | if (bs->job) { |
| 138 | block_job_cancel(bs->job); |
| 139 | } |
| 140 | |
| 141 | aio_context_release(aio_context); |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 142 | } |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 143 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 144 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 145 | } |
| 146 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 147 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 148 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 149 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 150 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 151 | if (dinfo && dinfo->auto_del) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 152 | monitor_remove_blk(blk); |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 153 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 154 | } |
| 155 | } |
| 156 | |
John Snow | d8f94e1 | 2014-10-01 14:19:27 -0400 | [diff] [blame] | 157 | /** |
| 158 | * Returns the current mapping of how many units per bus |
| 159 | * a particular interface can support. |
| 160 | * |
| 161 | * A positive integer indicates n units per bus. |
| 162 | * 0 implies the mapping has not been established. |
| 163 | * -1 indicates an invalid BlockInterfaceType was given. |
| 164 | */ |
| 165 | int drive_get_max_devs(BlockInterfaceType type) |
| 166 | { |
| 167 | if (type >= IF_IDE && type < IF_COUNT) { |
| 168 | return if_max_devs[type]; |
| 169 | } |
| 170 | |
| 171 | return -1; |
| 172 | } |
| 173 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 174 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 175 | { |
| 176 | int max_devs = if_max_devs[type]; |
| 177 | return max_devs ? index / max_devs : 0; |
| 178 | } |
| 179 | |
| 180 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 181 | { |
| 182 | int max_devs = if_max_devs[type]; |
| 183 | return max_devs ? index % max_devs : index; |
| 184 | } |
| 185 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 186 | QemuOpts *drive_def(const char *optstr) |
| 187 | { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 188 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 192 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 193 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 194 | QemuOpts *opts; |
| 195 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 196 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 197 | if (!opts) { |
| 198 | return NULL; |
| 199 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 200 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 201 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 202 | } |
| 203 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 204 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 205 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 206 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 207 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 208 | return opts; |
| 209 | } |
| 210 | |
| 211 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 212 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 213 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 214 | DriveInfo *dinfo; |
| 215 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 216 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 217 | dinfo = blk_legacy_dinfo(blk); |
| 218 | if (dinfo && dinfo->type == type |
| 219 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 220 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 221 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | return NULL; |
| 225 | } |
| 226 | |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 227 | bool drive_check_orphaned(void) |
| 228 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 229 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 230 | DriveInfo *dinfo; |
| 231 | bool rs = false; |
| 232 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 233 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 234 | dinfo = blk_legacy_dinfo(blk); |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 235 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ |
| 236 | /* Unless this is a default drive, this may be an oversight. */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 237 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 238 | dinfo->type != IF_NONE) { |
| 239 | fprintf(stderr, "Warning: Orphaned drive without device: " |
| 240 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 241 | blk_name(blk), blk_bs(blk) ? blk_bs(blk)->filename : "", |
| 242 | if_name[dinfo->type], dinfo->bus, dinfo->unit); |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 243 | rs = true; |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | return rs; |
| 248 | } |
| 249 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 250 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 251 | { |
| 252 | return drive_get(type, |
| 253 | drive_index_to_bus_id(type, index), |
| 254 | drive_index_to_unit_id(type, index)); |
| 255 | } |
| 256 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 257 | int drive_get_max_bus(BlockInterfaceType type) |
| 258 | { |
| 259 | int max_bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 260 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 261 | DriveInfo *dinfo; |
| 262 | |
| 263 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 264 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 265 | dinfo = blk_legacy_dinfo(blk); |
| 266 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 267 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 268 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 269 | } |
| 270 | return max_bus; |
| 271 | } |
| 272 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 273 | /* Get a block device. This should only be used for single-drive devices |
| 274 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 275 | appropriate bus. */ |
| 276 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 277 | { |
| 278 | static int next_block_unit[IF_COUNT]; |
| 279 | |
| 280 | return drive_get(type, 0, next_block_unit[type]++); |
| 281 | } |
| 282 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 283 | static void bdrv_format_print(void *opaque, const char *name) |
| 284 | { |
Markus Armbruster | 807105a | 2011-01-17 19:31:27 +0100 | [diff] [blame] | 285 | error_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 286 | } |
| 287 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 288 | typedef struct { |
| 289 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 290 | BlockDriverState *bs; |
| 291 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 292 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 293 | 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] | 294 | { |
| 295 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 296 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 297 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 298 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 299 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 300 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 301 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 302 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 303 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 304 | error_setg(errp, "'%s' invalid %s error action", |
| 305 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 306 | return -1; |
| 307 | } |
| 308 | } |
| 309 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 310 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
| 311 | Error **errp) |
| 312 | { |
| 313 | const QListEntry *entry; |
| 314 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { |
| 315 | switch (qobject_type(entry->value)) { |
| 316 | |
| 317 | case QTYPE_QSTRING: { |
| 318 | unsigned long long length; |
| 319 | const char *str = qstring_get_str(qobject_to_qstring(entry->value)); |
| 320 | if (parse_uint_full(str, &length, 10) == 0 && |
| 321 | length > 0 && length <= UINT_MAX) { |
| 322 | block_acct_add_interval(stats, (unsigned) length); |
| 323 | } else { |
| 324 | error_setg(errp, "Invalid interval length: %s", str); |
| 325 | return false; |
| 326 | } |
| 327 | break; |
| 328 | } |
| 329 | |
| 330 | case QTYPE_QINT: { |
| 331 | int64_t length = qint_get_int(qobject_to_qint(entry->value)); |
| 332 | if (length > 0 && length <= UINT_MAX) { |
| 333 | block_acct_add_interval(stats, (unsigned) length); |
| 334 | } else { |
| 335 | error_setg(errp, "Invalid interval length: %" PRId64, length); |
| 336 | return false; |
| 337 | } |
| 338 | break; |
| 339 | } |
| 340 | |
| 341 | default: |
| 342 | error_setg(errp, "The specification of stats-intervals is invalid"); |
| 343 | return false; |
| 344 | } |
| 345 | } |
| 346 | return true; |
| 347 | } |
| 348 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 349 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 350 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 351 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 352 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 353 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 354 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 355 | { |
| 356 | const char *discard; |
| 357 | Error *local_error = NULL; |
| 358 | const char *aio; |
| 359 | |
| 360 | if (bdrv_flags) { |
| 361 | if (!qemu_opt_get_bool(opts, "read-only", false)) { |
| 362 | *bdrv_flags |= BDRV_O_RDWR; |
| 363 | } |
| 364 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 365 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 366 | } |
| 367 | |
| 368 | if ((discard = qemu_opt_get(opts, "discard")) != NULL) { |
| 369 | if (bdrv_parse_discard_flags(discard, bdrv_flags) != 0) { |
| 370 | error_setg(errp, "Invalid discard option"); |
| 371 | return; |
| 372 | } |
| 373 | } |
| 374 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 375 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
| 376 | if (!strcmp(aio, "native")) { |
| 377 | *bdrv_flags |= BDRV_O_NATIVE_AIO; |
| 378 | } else if (!strcmp(aio, "threads")) { |
| 379 | /* this is the default */ |
| 380 | } else { |
| 381 | error_setg(errp, "invalid aio option"); |
| 382 | return; |
| 383 | } |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | /* disk I/O throttling */ |
| 388 | if (throttling_group) { |
| 389 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 390 | } |
| 391 | |
| 392 | if (throttle_cfg) { |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 393 | throttle_config_init(throttle_cfg); |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 394 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 395 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 396 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 397 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 398 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 399 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 400 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 401 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 402 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 403 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 404 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 405 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 406 | |
| 407 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 408 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 409 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 410 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 411 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 412 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 413 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 414 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 415 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 416 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 417 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 418 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 419 | |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 420 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
| 421 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); |
| 422 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = |
| 423 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); |
| 424 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = |
| 425 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); |
| 426 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = |
| 427 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); |
| 428 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = |
| 429 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); |
| 430 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = |
| 431 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); |
| 432 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 433 | throttle_cfg->op_size = |
| 434 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 435 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 436 | if (!throttle_is_valid(throttle_cfg, errp)) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 437 | return; |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | if (detect_zeroes) { |
| 442 | *detect_zeroes = |
| 443 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, |
| 444 | qemu_opt_get(opts, "detect-zeroes"), |
Eric Blake | 7fb1cf160 | 2015-11-18 01:52:57 -0700 | [diff] [blame] | 445 | BLOCKDEV_DETECT_ZEROES_OPTIONS__MAX, |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 446 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 447 | &local_error); |
| 448 | if (local_error) { |
| 449 | error_propagate(errp, local_error); |
| 450 | return; |
| 451 | } |
| 452 | |
| 453 | if (bdrv_flags && |
| 454 | *detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && |
| 455 | !(*bdrv_flags & BDRV_O_UNMAP)) |
| 456 | { |
| 457 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " |
| 458 | "without setting discard operation to unmap"); |
| 459 | return; |
| 460 | } |
| 461 | } |
| 462 | } |
| 463 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 464 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 465 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 466 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 467 | { |
| 468 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 469 | int bdrv_flags = 0; |
| 470 | int on_read_error, on_write_error; |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 471 | bool account_invalid, account_failed; |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 472 | bool writethrough; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 473 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 474 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 475 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 476 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 477 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 478 | QemuOpts *opts; |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 479 | QDict *interval_dict = NULL; |
| 480 | QList *interval_list = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 481 | const char *id; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 482 | BlockdevDetectZeroesOptions detect_zeroes = |
| 483 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
| 484 | const char *throttling_group = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 485 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 486 | /* Check common options by copying from bs_opts to opts, all other options |
| 487 | * stay in bs_opts for processing by bdrv_open(). */ |
| 488 | id = qdict_get_try_str(bs_opts, "id"); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 489 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 490 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 491 | error_propagate(errp, error); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 492 | goto err_no_opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 493 | } |
| 494 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 495 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 496 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 497 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 498 | goto early_err; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 499 | } |
| 500 | |
| 501 | if (id) { |
| 502 | qdict_del(bs_opts, "id"); |
| 503 | } |
| 504 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 505 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 506 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 507 | |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 508 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
| 509 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); |
| 510 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 511 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
| 512 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 513 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
| 514 | qdict_array_split(interval_dict, &interval_list); |
| 515 | |
| 516 | if (qdict_size(interval_dict) != 0) { |
| 517 | error_setg(errp, "Invalid option stats-intervals.%s", |
| 518 | qdict_first(interval_dict)->key); |
| 519 | goto early_err; |
| 520 | } |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 521 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 522 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 523 | &detect_zeroes, &error); |
| 524 | if (error) { |
| 525 | error_propagate(errp, error); |
| 526 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 527 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 528 | |
| 529 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 530 | if (is_help_option(buf)) { |
| 531 | error_printf("Supported formats:"); |
| 532 | bdrv_iterate_format(bdrv_format_print, NULL); |
| 533 | error_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 534 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 535 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 536 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 537 | if (qdict_haskey(bs_opts, "driver")) { |
| 538 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 539 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 540 | } |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 541 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 542 | } |
| 543 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 544 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 545 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 546 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 547 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 548 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 549 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 550 | } |
| 551 | } |
| 552 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 553 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 554 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 555 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 556 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 557 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 558 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 559 | } |
| 560 | } |
| 561 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 562 | if (snapshot) { |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 563 | bdrv_flags |= BDRV_O_SNAPSHOT; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 564 | } |
| 565 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 566 | /* init */ |
Kevin Wolf | 39c4ae9 | 2015-11-13 14:45:42 +0100 | [diff] [blame] | 567 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 568 | BlockBackendRootState *blk_rs; |
| 569 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 570 | blk = blk_new(errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 571 | if (!blk) { |
| 572 | goto early_err; |
| 573 | } |
| 574 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 575 | blk_rs = blk_get_root_state(blk); |
| 576 | blk_rs->open_flags = bdrv_flags; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 577 | blk_rs->read_only = !(bdrv_flags & BDRV_O_RDWR); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 578 | blk_rs->detect_zeroes = detect_zeroes; |
| 579 | |
| 580 | if (throttle_enabled(&cfg)) { |
| 581 | if (!throttling_group) { |
| 582 | throttling_group = blk_name(blk); |
| 583 | } |
| 584 | blk_rs->throttle_group = g_strdup(throttling_group); |
| 585 | blk_rs->throttle_state = throttle_group_incref(throttling_group); |
| 586 | blk_rs->throttle_state->cfg = cfg; |
| 587 | } |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 588 | |
| 589 | QDECREF(bs_opts); |
| 590 | } else { |
| 591 | if (file && !*file) { |
| 592 | file = NULL; |
| 593 | } |
| 594 | |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 595 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 596 | * with other callers) rather than what we want as the real defaults. |
| 597 | * Apply the defaults here instead. */ |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 598 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 599 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Kevin Wolf | 72e775c | 2016-03-15 14:34:37 +0100 | [diff] [blame] | 600 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 601 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 602 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 603 | bdrv_flags |= BDRV_O_INACTIVE; |
| 604 | } |
| 605 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 606 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 607 | if (!blk) { |
| 608 | goto err_no_bs_opts; |
| 609 | } |
| 610 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 611 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 612 | bs->detect_zeroes = detect_zeroes; |
| 613 | |
| 614 | /* disk I/O throttling */ |
| 615 | if (throttle_enabled(&cfg)) { |
| 616 | if (!throttling_group) { |
| 617 | throttling_group = blk_name(blk); |
| 618 | } |
| 619 | bdrv_io_limits_enable(bs, throttling_group); |
| 620 | bdrv_set_io_limits(bs, &cfg); |
| 621 | } |
| 622 | |
| 623 | if (bdrv_key_required(bs)) { |
| 624 | autostart = 0; |
| 625 | } |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 626 | |
| 627 | block_acct_init(blk_get_stats(blk), account_invalid, account_failed); |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 628 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 629 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
| 630 | blk_unref(blk); |
| 631 | blk = NULL; |
| 632 | goto err_no_bs_opts; |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 633 | } |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 634 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 635 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 636 | blk_set_enable_write_cache(blk, !writethrough); |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 637 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 638 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 639 | if (!monitor_add_blk(blk, qemu_opts_id(opts), errp)) { |
| 640 | blk_unref(blk); |
| 641 | blk = NULL; |
| 642 | goto err_no_bs_opts; |
| 643 | } |
| 644 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 645 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 646 | qemu_opts_del(opts); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 647 | QDECREF(interval_dict); |
| 648 | QDECREF(interval_list); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 649 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 650 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 651 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 652 | qemu_opts_del(opts); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 653 | QDECREF(interval_dict); |
| 654 | QDECREF(interval_list); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 655 | err_no_opts: |
| 656 | QDECREF(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 657 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 658 | } |
| 659 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 660 | static QemuOptsList qemu_root_bds_opts; |
| 661 | |
| 662 | /* Takes the ownership of bs_opts */ |
| 663 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
| 664 | { |
| 665 | BlockDriverState *bs; |
| 666 | QemuOpts *opts; |
| 667 | Error *local_error = NULL; |
| 668 | BlockdevDetectZeroesOptions detect_zeroes; |
| 669 | int ret; |
| 670 | int bdrv_flags = 0; |
| 671 | |
| 672 | opts = qemu_opts_create(&qemu_root_bds_opts, NULL, 1, errp); |
| 673 | if (!opts) { |
| 674 | goto fail; |
| 675 | } |
| 676 | |
| 677 | qemu_opts_absorb_qdict(opts, bs_opts, &local_error); |
| 678 | if (local_error) { |
| 679 | error_propagate(errp, local_error); |
| 680 | goto fail; |
| 681 | } |
| 682 | |
| 683 | extract_common_blockdev_options(opts, &bdrv_flags, NULL, NULL, |
| 684 | &detect_zeroes, &local_error); |
| 685 | if (local_error) { |
| 686 | error_propagate(errp, local_error); |
| 687 | goto fail; |
| 688 | } |
| 689 | |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 690 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 691 | * with other callers) rather than what we want as the real defaults. |
| 692 | * Apply the defaults here instead. */ |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 693 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 694 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
| 695 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 696 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 697 | bdrv_flags |= BDRV_O_INACTIVE; |
| 698 | } |
| 699 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 700 | bs = NULL; |
| 701 | ret = bdrv_open(&bs, NULL, NULL, bs_opts, bdrv_flags, errp); |
| 702 | if (ret < 0) { |
| 703 | goto fail_no_bs_opts; |
| 704 | } |
| 705 | |
| 706 | bs->detect_zeroes = detect_zeroes; |
| 707 | |
| 708 | fail_no_bs_opts: |
| 709 | qemu_opts_del(opts); |
| 710 | return bs; |
| 711 | |
| 712 | fail: |
| 713 | qemu_opts_del(opts); |
| 714 | QDECREF(bs_opts); |
| 715 | return NULL; |
| 716 | } |
| 717 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 718 | void blockdev_close_all_bdrv_states(void) |
| 719 | { |
| 720 | BlockDriverState *bs, *next_bs; |
| 721 | |
| 722 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { |
| 723 | AioContext *ctx = bdrv_get_aio_context(bs); |
| 724 | |
| 725 | aio_context_acquire(ctx); |
| 726 | bdrv_unref(bs); |
| 727 | aio_context_release(ctx); |
| 728 | } |
| 729 | } |
| 730 | |
Max Reitz | 262b4e8 | 2016-03-16 19:54:41 +0100 | [diff] [blame] | 731 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
| 732 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) |
| 733 | { |
| 734 | return bs ? QTAILQ_NEXT(bs, monitor_list) |
| 735 | : QTAILQ_FIRST(&monitor_bdrv_states); |
| 736 | } |
| 737 | |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 738 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
| 739 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 740 | { |
| 741 | const char *value; |
| 742 | |
| 743 | value = qemu_opt_get(opts, from); |
| 744 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 745 | if (qemu_opt_find(opts, to)) { |
| 746 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 747 | "same time", to, from); |
| 748 | return; |
| 749 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | /* rename all items in opts */ |
| 753 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 754 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 755 | qemu_opt_unset(opts, from); |
| 756 | } |
| 757 | } |
| 758 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 759 | QemuOptsList qemu_legacy_drive_opts = { |
| 760 | .name = "drive", |
| 761 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 762 | .desc = { |
| 763 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 764 | .name = "bus", |
| 765 | .type = QEMU_OPT_NUMBER, |
| 766 | .help = "bus number", |
| 767 | },{ |
| 768 | .name = "unit", |
| 769 | .type = QEMU_OPT_NUMBER, |
| 770 | .help = "unit number (i.e. lun for scsi)", |
| 771 | },{ |
| 772 | .name = "index", |
| 773 | .type = QEMU_OPT_NUMBER, |
| 774 | .help = "index number", |
| 775 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 776 | .name = "media", |
| 777 | .type = QEMU_OPT_STRING, |
| 778 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 779 | },{ |
| 780 | .name = "if", |
| 781 | .type = QEMU_OPT_STRING, |
| 782 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 783 | },{ |
| 784 | .name = "cyls", |
| 785 | .type = QEMU_OPT_NUMBER, |
| 786 | .help = "number of cylinders (ide disk geometry)", |
| 787 | },{ |
| 788 | .name = "heads", |
| 789 | .type = QEMU_OPT_NUMBER, |
| 790 | .help = "number of heads (ide disk geometry)", |
| 791 | },{ |
| 792 | .name = "secs", |
| 793 | .type = QEMU_OPT_NUMBER, |
| 794 | .help = "number of sectors (ide disk geometry)", |
| 795 | },{ |
| 796 | .name = "trans", |
| 797 | .type = QEMU_OPT_STRING, |
| 798 | .help = "chs translation (auto, lba, none)", |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 799 | },{ |
| 800 | .name = "boot", |
| 801 | .type = QEMU_OPT_BOOL, |
| 802 | .help = "(deprecated, ignored)", |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 803 | },{ |
| 804 | .name = "addr", |
| 805 | .type = QEMU_OPT_STRING, |
| 806 | .help = "pci address (virtio only)", |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 807 | },{ |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 808 | .name = "serial", |
| 809 | .type = QEMU_OPT_STRING, |
| 810 | .help = "disk serial number", |
| 811 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 812 | .name = "file", |
| 813 | .type = QEMU_OPT_STRING, |
| 814 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 815 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 816 | |
| 817 | /* Options that are passed on, but have special semantics with -drive */ |
| 818 | { |
| 819 | .name = "read-only", |
| 820 | .type = QEMU_OPT_BOOL, |
| 821 | .help = "open drive file as read-only", |
| 822 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 823 | .name = "rerror", |
| 824 | .type = QEMU_OPT_STRING, |
| 825 | .help = "read error action", |
| 826 | },{ |
| 827 | .name = "werror", |
| 828 | .type = QEMU_OPT_STRING, |
| 829 | .help = "write error action", |
| 830 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 831 | .name = "copy-on-read", |
| 832 | .type = QEMU_OPT_BOOL, |
| 833 | .help = "copy read data from backing file into image file", |
| 834 | }, |
| 835 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 836 | { /* end of list */ } |
| 837 | }, |
| 838 | }; |
| 839 | |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 840 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 841 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 842 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 843 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 844 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 845 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 846 | QemuOpts *legacy_opts; |
| 847 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 848 | BlockInterfaceType type; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 849 | int cyls, heads, secs, translation; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 850 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 851 | const char *devaddr; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 852 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 853 | bool read_only = false; |
| 854 | bool copy_on_read; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 855 | const char *serial; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 856 | const char *filename; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 857 | Error *local_err = NULL; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 858 | int i; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 859 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 860 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 861 | static const struct { |
| 862 | const char *from; |
| 863 | const char *to; |
| 864 | } opt_renames[] = { |
| 865 | { "iops", "throttling.iops-total" }, |
| 866 | { "iops_rd", "throttling.iops-read" }, |
| 867 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 868 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 869 | { "bps", "throttling.bps-total" }, |
| 870 | { "bps_rd", "throttling.bps-read" }, |
| 871 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 872 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 873 | { "iops_max", "throttling.iops-total-max" }, |
| 874 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 875 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 876 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 877 | { "bps_max", "throttling.bps-total-max" }, |
| 878 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 879 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 880 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 881 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 882 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 883 | { "group", "throttling.group" }, |
| 884 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 885 | { "readonly", "read-only" }, |
| 886 | }; |
| 887 | |
| 888 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 889 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
| 890 | &local_err); |
| 891 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 892 | error_report_err(local_err); |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 893 | return NULL; |
| 894 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 895 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 896 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 897 | value = qemu_opt_get(all_opts, "cache"); |
| 898 | if (value) { |
| 899 | int flags = 0; |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 900 | bool writethrough; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 901 | |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 902 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 903 | error_report("invalid cache option"); |
| 904 | return NULL; |
| 905 | } |
| 906 | |
| 907 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 908 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 909 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 910 | !writethrough, &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 911 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 912 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 913 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 914 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 915 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 916 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 917 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 918 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 919 | } |
| 920 | qemu_opt_unset(all_opts, "cache"); |
| 921 | } |
| 922 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 923 | /* Get a QDict for processing the options */ |
| 924 | bs_opts = qdict_new(); |
| 925 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 926 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 927 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 928 | &error_abort); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 929 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 930 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 931 | error_report_err(local_err); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 932 | goto fail; |
| 933 | } |
| 934 | |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 935 | /* Deprecated option boot=[on|off] */ |
| 936 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { |
| 937 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " |
| 938 | "ignored. Future versions will reject this parameter. Please " |
| 939 | "update your scripts.\n"); |
| 940 | } |
| 941 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 942 | /* Media type */ |
| 943 | value = qemu_opt_get(legacy_opts, "media"); |
| 944 | if (value) { |
| 945 | if (!strcmp(value, "disk")) { |
| 946 | media = MEDIA_DISK; |
| 947 | } else if (!strcmp(value, "cdrom")) { |
| 948 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 949 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 950 | } else { |
| 951 | error_report("'%s' invalid media", value); |
| 952 | goto fail; |
| 953 | } |
| 954 | } |
| 955 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 956 | /* copy-on-read is disabled with a warning for read-only devices */ |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 957 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 958 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 959 | |
| 960 | if (read_only && copy_on_read) { |
| 961 | error_report("warning: disabling copy-on-read on read-only drive"); |
| 962 | copy_on_read = false; |
| 963 | } |
| 964 | |
| 965 | qdict_put(bs_opts, "read-only", |
| 966 | qstring_from_str(read_only ? "on" : "off")); |
| 967 | qdict_put(bs_opts, "copy-on-read", |
| 968 | qstring_from_str(copy_on_read ? "on" :"off")); |
| 969 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 970 | /* Controller type */ |
| 971 | value = qemu_opt_get(legacy_opts, "if"); |
| 972 | if (value) { |
| 973 | for (type = 0; |
| 974 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 975 | type++) { |
| 976 | } |
| 977 | if (type == IF_COUNT) { |
| 978 | error_report("unsupported bus type '%s'", value); |
| 979 | goto fail; |
| 980 | } |
| 981 | } else { |
| 982 | type = block_default_type; |
| 983 | } |
| 984 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 985 | /* Geometry */ |
| 986 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); |
| 987 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); |
| 988 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); |
| 989 | |
| 990 | if (cyls || heads || secs) { |
| 991 | if (cyls < 1) { |
| 992 | error_report("invalid physical cyls number"); |
| 993 | goto fail; |
| 994 | } |
| 995 | if (heads < 1) { |
| 996 | error_report("invalid physical heads number"); |
| 997 | goto fail; |
| 998 | } |
| 999 | if (secs < 1) { |
| 1000 | error_report("invalid physical secs number"); |
| 1001 | goto fail; |
| 1002 | } |
| 1003 | } |
| 1004 | |
| 1005 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 1006 | value = qemu_opt_get(legacy_opts, "trans"); |
| 1007 | if (value != NULL) { |
| 1008 | if (!cyls) { |
| 1009 | error_report("'%s' trans must be used with cyls, heads and secs", |
| 1010 | value); |
| 1011 | goto fail; |
| 1012 | } |
| 1013 | if (!strcmp(value, "none")) { |
| 1014 | translation = BIOS_ATA_TRANSLATION_NONE; |
| 1015 | } else if (!strcmp(value, "lba")) { |
| 1016 | translation = BIOS_ATA_TRANSLATION_LBA; |
Paolo Bonzini | f31c41f | 2014-02-08 11:01:54 +0100 | [diff] [blame] | 1017 | } else if (!strcmp(value, "large")) { |
| 1018 | translation = BIOS_ATA_TRANSLATION_LARGE; |
| 1019 | } else if (!strcmp(value, "rechs")) { |
| 1020 | translation = BIOS_ATA_TRANSLATION_RECHS; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 1021 | } else if (!strcmp(value, "auto")) { |
| 1022 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 1023 | } else { |
| 1024 | error_report("'%s' invalid translation type", value); |
| 1025 | goto fail; |
| 1026 | } |
| 1027 | } |
| 1028 | |
| 1029 | if (media == MEDIA_CDROM) { |
| 1030 | if (cyls || secs || heads) { |
| 1031 | error_report("CHS can't be set with media=cdrom"); |
| 1032 | goto fail; |
| 1033 | } |
| 1034 | } |
| 1035 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1036 | /* Device address specified by bus/unit or index. |
| 1037 | * If none was specified, try to find the first free one. */ |
| 1038 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 1039 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 1040 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 1041 | |
| 1042 | max_devs = if_max_devs[type]; |
| 1043 | |
| 1044 | if (index != -1) { |
| 1045 | if (bus_id != 0 || unit_id != -1) { |
| 1046 | error_report("index cannot be used with bus and unit"); |
| 1047 | goto fail; |
| 1048 | } |
| 1049 | bus_id = drive_index_to_bus_id(type, index); |
| 1050 | unit_id = drive_index_to_unit_id(type, index); |
| 1051 | } |
| 1052 | |
| 1053 | if (unit_id == -1) { |
| 1054 | unit_id = 0; |
| 1055 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 1056 | unit_id++; |
| 1057 | if (max_devs && unit_id >= max_devs) { |
| 1058 | unit_id -= max_devs; |
| 1059 | bus_id++; |
| 1060 | } |
| 1061 | } |
| 1062 | } |
| 1063 | |
| 1064 | if (max_devs && unit_id >= max_devs) { |
| 1065 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); |
| 1066 | goto fail; |
| 1067 | } |
| 1068 | |
| 1069 | if (drive_get(type, bus_id, unit_id) != NULL) { |
| 1070 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
| 1071 | bus_id, unit_id, index); |
| 1072 | goto fail; |
| 1073 | } |
| 1074 | |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1075 | /* Serial number */ |
| 1076 | serial = qemu_opt_get(legacy_opts, "serial"); |
| 1077 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1078 | /* no id supplied -> create one */ |
| 1079 | if (qemu_opts_id(all_opts) == NULL) { |
| 1080 | char *new_id; |
| 1081 | const char *mediastr = ""; |
| 1082 | if (type == IF_IDE || type == IF_SCSI) { |
| 1083 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 1084 | } |
| 1085 | if (max_devs) { |
| 1086 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 1087 | mediastr, unit_id); |
| 1088 | } else { |
| 1089 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 1090 | mediastr, unit_id); |
| 1091 | } |
| 1092 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); |
| 1093 | g_free(new_id); |
| 1094 | } |
| 1095 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1096 | /* Add virtio block device */ |
| 1097 | devaddr = qemu_opt_get(legacy_opts, "addr"); |
| 1098 | if (devaddr && type != IF_VIRTIO) { |
| 1099 | error_report("addr is not supported by this bus type"); |
| 1100 | goto fail; |
| 1101 | } |
| 1102 | |
| 1103 | if (type == IF_VIRTIO) { |
| 1104 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 1105 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 1106 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1107 | if (arch_type == QEMU_ARCH_S390X) { |
Alexander Graf | 1f68f1d | 2015-06-16 23:06:33 +0200 | [diff] [blame] | 1108 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1109 | } else { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1110 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1111 | } |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1112 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 1113 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1114 | if (devaddr) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1115 | qemu_opt_set(devopts, "addr", devaddr, &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1116 | } |
| 1117 | } |
| 1118 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 1119 | filename = qemu_opt_get(legacy_opts, "file"); |
| 1120 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1121 | /* Check werror/rerror compatibility with if=... */ |
| 1122 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 1123 | if (werror != NULL) { |
| 1124 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 1125 | type != IF_NONE) { |
| 1126 | error_report("werror is not supported by this bus type"); |
| 1127 | goto fail; |
| 1128 | } |
| 1129 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); |
| 1130 | } |
| 1131 | |
| 1132 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 1133 | if (rerror != NULL) { |
| 1134 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 1135 | type != IF_NONE) { |
| 1136 | error_report("rerror is not supported by this bus type"); |
| 1137 | goto fail; |
| 1138 | } |
| 1139 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); |
| 1140 | } |
| 1141 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1142 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1143 | blk = blockdev_init(filename, bs_opts, &local_err); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1144 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1145 | if (!blk) { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1146 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 1147 | error_report_err(local_err); |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 1148 | } |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1149 | goto fail; |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 1150 | } else { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1151 | assert(!local_err); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1152 | } |
| 1153 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1154 | /* Create legacy DriveInfo */ |
| 1155 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1156 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1157 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 1158 | dinfo->cyls = cyls; |
| 1159 | dinfo->heads = heads; |
| 1160 | dinfo->secs = secs; |
| 1161 | dinfo->trans = translation; |
| 1162 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1163 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1164 | dinfo->bus = bus_id; |
| 1165 | dinfo->unit = unit_id; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1166 | dinfo->devaddr = devaddr; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1167 | dinfo->serial = g_strdup(serial); |
| 1168 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1169 | blk_set_legacy_dinfo(blk, dinfo); |
| 1170 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1171 | switch(type) { |
| 1172 | case IF_IDE: |
| 1173 | case IF_SCSI: |
| 1174 | case IF_XEN: |
| 1175 | case IF_NONE: |
| 1176 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1177 | break; |
| 1178 | default: |
| 1179 | break; |
| 1180 | } |
| 1181 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1182 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1183 | qemu_opts_del(legacy_opts); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1184 | QDECREF(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1185 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1186 | } |
| 1187 | |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame] | 1188 | void hmp_commit(Monitor *mon, const QDict *qdict) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1189 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1190 | const char *device = qdict_get_str(qdict, "device"); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1191 | BlockBackend *blk; |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 1192 | int ret; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1193 | |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1194 | if (!strcmp(device, "all")) { |
Max Reitz | da31d59 | 2016-03-16 19:54:32 +0100 | [diff] [blame] | 1195 | ret = blk_commit_all(); |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1196 | } else { |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1197 | BlockDriverState *bs; |
| 1198 | AioContext *aio_context; |
| 1199 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1200 | blk = blk_by_name(device); |
| 1201 | if (!blk) { |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1202 | monitor_printf(mon, "Device '%s' not found\n", device); |
Markus Armbruster | ac59eb9 | 2010-06-02 18:55:19 +0200 | [diff] [blame] | 1203 | return; |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1204 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1205 | if (!blk_is_available(blk)) { |
| 1206 | monitor_printf(mon, "Device '%s' has no medium\n", device); |
| 1207 | return; |
| 1208 | } |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1209 | |
| 1210 | bs = blk_bs(blk); |
| 1211 | aio_context = bdrv_get_aio_context(bs); |
| 1212 | aio_context_acquire(aio_context); |
| 1213 | |
| 1214 | ret = bdrv_commit(bs); |
| 1215 | |
| 1216 | aio_context_release(aio_context); |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1217 | } |
| 1218 | if (ret < 0) { |
| 1219 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, |
| 1220 | strerror(-ret)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1221 | } |
| 1222 | } |
| 1223 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1224 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1225 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1226 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1227 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1228 | list.value = action; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1229 | list.next = NULL; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1230 | qmp_transaction(&list, false, NULL, errp); |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1231 | } |
| 1232 | |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1233 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
| 1234 | bool has_node_name, const char *node_name, |
| 1235 | const char *snapshot_file, |
| 1236 | bool has_snapshot_node_name, |
| 1237 | const char *snapshot_node_name, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 1238 | bool has_format, const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1239 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1240 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1241 | BlockdevSnapshotSync snapshot = { |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1242 | .has_device = has_device, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1243 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1244 | .has_node_name = has_node_name, |
| 1245 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1246 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1247 | .has_snapshot_node_name = has_snapshot_node_name, |
| 1248 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1249 | .has_format = has_format, |
| 1250 | .format = (char *) format, |
| 1251 | .has_mode = has_mode, |
| 1252 | .mode = mode, |
| 1253 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1254 | TransactionAction action = { |
| 1255 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1256 | .u.blockdev_snapshot_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1257 | }; |
| 1258 | blockdev_do_action(&action, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1259 | } |
| 1260 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1261 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1262 | Error **errp) |
| 1263 | { |
| 1264 | BlockdevSnapshot snapshot_data = { |
| 1265 | .node = (char *) node, |
| 1266 | .overlay = (char *) overlay |
| 1267 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1268 | TransactionAction action = { |
| 1269 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1270 | .u.blockdev_snapshot.data = &snapshot_data, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1271 | }; |
| 1272 | blockdev_do_action(&action, errp); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1273 | } |
| 1274 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1275 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1276 | const char *name, |
| 1277 | Error **errp) |
| 1278 | { |
| 1279 | BlockdevSnapshotInternal snapshot = { |
| 1280 | .device = (char *) device, |
| 1281 | .name = (char *) name |
| 1282 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1283 | TransactionAction action = { |
| 1284 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1285 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1286 | }; |
| 1287 | blockdev_do_action(&action, errp); |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1288 | } |
| 1289 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1290 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 1291 | bool has_id, |
| 1292 | const char *id, |
| 1293 | bool has_name, |
| 1294 | const char *name, |
| 1295 | Error **errp) |
| 1296 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1297 | BlockDriverState *bs; |
| 1298 | BlockBackend *blk; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1299 | AioContext *aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1300 | QEMUSnapshotInfo sn; |
| 1301 | Error *local_err = NULL; |
| 1302 | SnapshotInfo *info = NULL; |
| 1303 | int ret; |
| 1304 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1305 | blk = blk_by_name(device); |
| 1306 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1307 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1308 | "Device '%s' not found", device); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1309 | return NULL; |
| 1310 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1311 | |
| 1312 | aio_context = blk_get_aio_context(blk); |
| 1313 | aio_context_acquire(aio_context); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1314 | |
| 1315 | if (!has_id) { |
| 1316 | id = NULL; |
| 1317 | } |
| 1318 | |
| 1319 | if (!has_name) { |
| 1320 | name = NULL; |
| 1321 | } |
| 1322 | |
| 1323 | if (!id && !name) { |
| 1324 | error_setg(errp, "Name or id must be provided"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1325 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1326 | } |
| 1327 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1328 | if (!blk_is_available(blk)) { |
| 1329 | error_setg(errp, "Device '%s' has no medium", device); |
| 1330 | goto out_aio_context; |
| 1331 | } |
| 1332 | bs = blk_bs(blk); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1333 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1334 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
| 1335 | goto out_aio_context; |
| 1336 | } |
| 1337 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1338 | 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] | 1339 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1340 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1341 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1342 | } |
| 1343 | if (!ret) { |
| 1344 | error_setg(errp, |
| 1345 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1346 | "device '%s'", |
| 1347 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1348 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1349 | } |
| 1350 | |
| 1351 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1352 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1353 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1354 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1355 | } |
| 1356 | |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1357 | aio_context_release(aio_context); |
| 1358 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1359 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1360 | info->id = g_strdup(sn.id_str); |
| 1361 | info->name = g_strdup(sn.name); |
| 1362 | info->date_nsec = sn.date_nsec; |
| 1363 | info->date_sec = sn.date_sec; |
| 1364 | info->vm_state_size = sn.vm_state_size; |
| 1365 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1366 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
| 1367 | |
| 1368 | return info; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1369 | |
| 1370 | out_aio_context: |
| 1371 | aio_context_release(aio_context); |
| 1372 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1373 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1374 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1375 | /** |
| 1376 | * block_dirty_bitmap_lookup: |
| 1377 | * Return a dirty bitmap (if present), after validating |
| 1378 | * the node reference and bitmap names. |
| 1379 | * |
| 1380 | * @node: The name of the BDS node to search for bitmaps |
| 1381 | * @name: The name of the bitmap to search for |
| 1382 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. |
| 1383 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. |
| 1384 | * @errp: Output pointer for error information. Can be NULL. |
| 1385 | * |
| 1386 | * @return: A bitmap object on success, or NULL on failure. |
| 1387 | */ |
| 1388 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, |
| 1389 | const char *name, |
| 1390 | BlockDriverState **pbs, |
| 1391 | AioContext **paio, |
| 1392 | Error **errp) |
| 1393 | { |
| 1394 | BlockDriverState *bs; |
| 1395 | BdrvDirtyBitmap *bitmap; |
| 1396 | AioContext *aio_context; |
| 1397 | |
| 1398 | if (!node) { |
| 1399 | error_setg(errp, "Node cannot be NULL"); |
| 1400 | return NULL; |
| 1401 | } |
| 1402 | if (!name) { |
| 1403 | error_setg(errp, "Bitmap name cannot be NULL"); |
| 1404 | return NULL; |
| 1405 | } |
| 1406 | bs = bdrv_lookup_bs(node, node, NULL); |
| 1407 | if (!bs) { |
| 1408 | error_setg(errp, "Node '%s' not found", node); |
| 1409 | return NULL; |
| 1410 | } |
| 1411 | |
| 1412 | aio_context = bdrv_get_aio_context(bs); |
| 1413 | aio_context_acquire(aio_context); |
| 1414 | |
| 1415 | bitmap = bdrv_find_dirty_bitmap(bs, name); |
| 1416 | if (!bitmap) { |
| 1417 | error_setg(errp, "Dirty bitmap '%s' not found", name); |
| 1418 | goto fail; |
| 1419 | } |
| 1420 | |
| 1421 | if (pbs) { |
| 1422 | *pbs = bs; |
| 1423 | } |
| 1424 | if (paio) { |
| 1425 | *paio = aio_context; |
| 1426 | } else { |
| 1427 | aio_context_release(aio_context); |
| 1428 | } |
| 1429 | |
| 1430 | return bitmap; |
| 1431 | |
| 1432 | fail: |
| 1433 | aio_context_release(aio_context); |
| 1434 | return NULL; |
| 1435 | } |
| 1436 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1437 | /* New and old BlockDriverState structs for atomic group operations */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1438 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1439 | typedef struct BlkActionState BlkActionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1440 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1441 | /** |
| 1442 | * BlkActionOps: |
| 1443 | * Table of operations that define an Action. |
| 1444 | * |
| 1445 | * @instance_size: Size of state struct, in bytes. |
| 1446 | * @prepare: Prepare the work, must NOT be NULL. |
| 1447 | * @commit: Commit the changes, can be NULL. |
| 1448 | * @abort: Abort the changes on fail, can be NULL. |
| 1449 | * @clean: Clean up resources after all transaction actions have called |
| 1450 | * commit() or abort(). Can be NULL. |
| 1451 | * |
| 1452 | * Only prepare() may fail. In a single transaction, only one of commit() or |
| 1453 | * 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] | 1454 | */ |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1455 | typedef struct BlkActionOps { |
| 1456 | size_t instance_size; |
| 1457 | void (*prepare)(BlkActionState *common, Error **errp); |
| 1458 | void (*commit)(BlkActionState *common); |
| 1459 | void (*abort)(BlkActionState *common); |
| 1460 | void (*clean)(BlkActionState *common); |
| 1461 | } BlkActionOps; |
| 1462 | |
| 1463 | /** |
| 1464 | * BlkActionState: |
| 1465 | * Describes one Action's state within a Transaction. |
| 1466 | * |
| 1467 | * @action: QAPI-defined enum identifying which Action to perform. |
| 1468 | * @ops: Table of ActionOps this Action can perform. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1469 | * @block_job_txn: Transaction which this action belongs to. |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1470 | * @entry: List membership for all Actions in this Transaction. |
| 1471 | * |
| 1472 | * This structure must be arranged as first member in a subclassed type, |
| 1473 | * assuming that the compiler will also arrange it to the same offsets as the |
| 1474 | * base class. |
| 1475 | */ |
| 1476 | struct BlkActionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1477 | TransactionAction *action; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1478 | const BlkActionOps *ops; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1479 | BlockJobTxn *block_job_txn; |
| 1480 | TransactionProperties *txn_props; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1481 | QSIMPLEQ_ENTRY(BlkActionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1482 | }; |
| 1483 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1484 | /* internal snapshot private data */ |
| 1485 | typedef struct InternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1486 | BlkActionState common; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1487 | BlockDriverState *bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1488 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1489 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1490 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1491 | } InternalSnapshotState; |
| 1492 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1493 | |
| 1494 | static int action_check_completion_mode(BlkActionState *s, Error **errp) |
| 1495 | { |
| 1496 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 1497 | error_setg(errp, |
| 1498 | "Action '%s' does not support Transaction property " |
| 1499 | "completion-mode = %s", |
| 1500 | TransactionActionKind_lookup[s->action->type], |
| 1501 | ActionCompletionMode_lookup[s->txn_props->completion_mode]); |
| 1502 | return -1; |
| 1503 | } |
| 1504 | return 0; |
| 1505 | } |
| 1506 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1507 | static void internal_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1508 | Error **errp) |
| 1509 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1510 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1511 | const char *device; |
| 1512 | const char *name; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1513 | BlockBackend *blk; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1514 | BlockDriverState *bs; |
| 1515 | QEMUSnapshotInfo old_sn, *sn; |
| 1516 | bool ret; |
| 1517 | qemu_timeval tv; |
| 1518 | BlockdevSnapshotInternal *internal; |
| 1519 | InternalSnapshotState *state; |
| 1520 | int ret1; |
| 1521 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1522 | g_assert(common->action->type == |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1523 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1524 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1525 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1526 | |
| 1527 | /* 1. parse input */ |
| 1528 | device = internal->device; |
| 1529 | name = internal->name; |
| 1530 | |
| 1531 | /* 2. check for validation */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1532 | if (action_check_completion_mode(common, errp) < 0) { |
| 1533 | return; |
| 1534 | } |
| 1535 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1536 | blk = blk_by_name(device); |
| 1537 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1538 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1539 | "Device '%s' not found", device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1540 | return; |
| 1541 | } |
| 1542 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1543 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1544 | state->aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1545 | aio_context_acquire(state->aio_context); |
| 1546 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1547 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1548 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1549 | return; |
| 1550 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1551 | bs = blk_bs(blk); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1552 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1553 | state->bs = bs; |
| 1554 | bdrv_drained_begin(bs); |
| 1555 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1556 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
| 1557 | return; |
| 1558 | } |
| 1559 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1560 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1561 | error_setg(errp, "Device '%s' is read only", device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1562 | return; |
| 1563 | } |
| 1564 | |
| 1565 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1566 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1567 | "does not support internal snapshots", |
| 1568 | bs->drv->format_name, device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1569 | return; |
| 1570 | } |
| 1571 | |
| 1572 | if (!strlen(name)) { |
| 1573 | error_setg(errp, "Name is empty"); |
| 1574 | return; |
| 1575 | } |
| 1576 | |
| 1577 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1578 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1579 | &local_err); |
| 1580 | if (local_err) { |
| 1581 | error_propagate(errp, local_err); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1582 | return; |
| 1583 | } else if (ret) { |
| 1584 | error_setg(errp, |
| 1585 | "Snapshot with name '%s' already exists on device '%s'", |
| 1586 | name, device); |
| 1587 | return; |
| 1588 | } |
| 1589 | |
| 1590 | /* 3. take the snapshot */ |
| 1591 | sn = &state->sn; |
| 1592 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1593 | qemu_gettimeofday(&tv); |
| 1594 | sn->date_sec = tv.tv_sec; |
| 1595 | sn->date_nsec = tv.tv_usec * 1000; |
| 1596 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1597 | |
| 1598 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1599 | if (ret1 < 0) { |
| 1600 | error_setg_errno(errp, -ret1, |
| 1601 | "Failed to create snapshot '%s' on device '%s'", |
| 1602 | name, device); |
| 1603 | return; |
| 1604 | } |
| 1605 | |
| 1606 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1607 | state->created = true; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1608 | } |
| 1609 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1610 | static void internal_snapshot_abort(BlkActionState *common) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1611 | { |
| 1612 | InternalSnapshotState *state = |
| 1613 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1614 | BlockDriverState *bs = state->bs; |
| 1615 | QEMUSnapshotInfo *sn = &state->sn; |
| 1616 | Error *local_error = NULL; |
| 1617 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1618 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1619 | return; |
| 1620 | } |
| 1621 | |
| 1622 | 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] | 1623 | error_reportf_err(local_error, |
| 1624 | "Failed to delete snapshot with id '%s' and " |
| 1625 | "name '%s' on device '%s' in abort: ", |
| 1626 | sn->id_str, sn->name, |
| 1627 | bdrv_get_device_name(bs)); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1628 | } |
| 1629 | } |
| 1630 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1631 | static void internal_snapshot_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1632 | { |
| 1633 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, |
| 1634 | common, common); |
| 1635 | |
| 1636 | if (state->aio_context) { |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1637 | if (state->bs) { |
| 1638 | bdrv_drained_end(state->bs); |
| 1639 | } |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1640 | aio_context_release(state->aio_context); |
| 1641 | } |
| 1642 | } |
| 1643 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1644 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1645 | typedef struct ExternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1646 | BlkActionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1647 | BlockDriverState *old_bs; |
| 1648 | BlockDriverState *new_bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1649 | AioContext *aio_context; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1650 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1651 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1652 | static void external_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1653 | Error **errp) |
| 1654 | { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1655 | int flags = 0, ret; |
| 1656 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1657 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1658 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1659 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1660 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1661 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1662 | const char *snapshot_ref; |
| 1663 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1664 | const char *new_image_file; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1665 | ExternalSnapshotState *state = |
| 1666 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1667 | TransactionAction *action = common->action; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1668 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1669 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1670 | * purpose but a different set of parameters */ |
| 1671 | switch (action->type) { |
| 1672 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1673 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1674 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1675 | device = s->node; |
| 1676 | node_name = s->node; |
| 1677 | new_image_file = NULL; |
| 1678 | snapshot_ref = s->overlay; |
| 1679 | } |
| 1680 | break; |
| 1681 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1682 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1683 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1684 | device = s->has_device ? s->device : NULL; |
| 1685 | node_name = s->has_node_name ? s->node_name : NULL; |
| 1686 | new_image_file = s->snapshot_file; |
| 1687 | snapshot_ref = NULL; |
| 1688 | } |
| 1689 | break; |
| 1690 | default: |
| 1691 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1692 | } |
| 1693 | |
| 1694 | /* start processing */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1695 | if (action_check_completion_mode(common, errp) < 0) { |
| 1696 | return; |
| 1697 | } |
| 1698 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1699 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1700 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1701 | return; |
| 1702 | } |
| 1703 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1704 | /* Acquire AioContext now so any threads operating on old_bs stop */ |
| 1705 | state->aio_context = bdrv_get_aio_context(state->old_bs); |
| 1706 | aio_context_acquire(state->aio_context); |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1707 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1708 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1709 | if (!bdrv_is_inserted(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1710 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1711 | return; |
| 1712 | } |
| 1713 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1714 | if (bdrv_op_is_blocked(state->old_bs, |
| 1715 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1716 | return; |
| 1717 | } |
| 1718 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1719 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1720 | if (bdrv_flush(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1721 | error_setg(errp, QERR_IO_ERROR); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1722 | return; |
| 1723 | } |
| 1724 | } |
| 1725 | |
Benoît Canet | 212a5a8 | 2014-01-23 21:31:36 +0100 | [diff] [blame] | 1726 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1727 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
Benoît Canet | f6186f4 | 2013-10-02 14:33:48 +0200 | [diff] [blame] | 1728 | return; |
| 1729 | } |
| 1730 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1731 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1732 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1733 | const char *format = s->has_format ? s->format : "qcow2"; |
| 1734 | enum NewImageMode mode; |
| 1735 | const char *snapshot_node_name = |
| 1736 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1737 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1738 | if (node_name && !snapshot_node_name) { |
| 1739 | error_setg(errp, "New snapshot node name missing"); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1740 | return; |
| 1741 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1742 | |
| 1743 | if (snapshot_node_name && |
| 1744 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
| 1745 | error_setg(errp, "New snapshot node name already in use"); |
| 1746 | return; |
| 1747 | } |
| 1748 | |
| 1749 | flags = state->old_bs->open_flags; |
Kevin Wolf | 4c84498 | 2016-02-29 13:12:26 +0100 | [diff] [blame] | 1750 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | BDRV_O_COPY_ON_READ); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1751 | |
| 1752 | /* create new image w/backing file */ |
| 1753 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1754 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1755 | int64_t size = bdrv_getlength(state->old_bs); |
| 1756 | if (size < 0) { |
| 1757 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
| 1758 | return; |
| 1759 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1760 | bdrv_img_create(new_image_file, format, |
| 1761 | state->old_bs->filename, |
| 1762 | state->old_bs->drv->format_name, |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1763 | NULL, size, flags, &local_err, false); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1764 | if (local_err) { |
| 1765 | error_propagate(errp, local_err); |
| 1766 | return; |
| 1767 | } |
| 1768 | } |
| 1769 | |
| 1770 | options = qdict_new(); |
| 1771 | if (s->has_snapshot_node_name) { |
| 1772 | qdict_put(options, "node-name", |
| 1773 | qstring_from_str(snapshot_node_name)); |
| 1774 | } |
| 1775 | qdict_put(options, "driver", qstring_from_str(format)); |
| 1776 | |
| 1777 | flags |= BDRV_O_NO_BACKING; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1778 | } |
| 1779 | |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1780 | assert(state->new_bs == NULL); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1781 | ret = bdrv_open(&state->new_bs, new_image_file, snapshot_ref, options, |
| 1782 | flags, errp); |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1783 | /* We will manually add the backing_hd field to the bs later */ |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1784 | if (ret != 0) { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1785 | return; |
| 1786 | } |
| 1787 | |
| 1788 | if (state->new_bs->blk != NULL) { |
| 1789 | error_setg(errp, "The snapshot is already in use by %s", |
| 1790 | blk_name(state->new_bs->blk)); |
| 1791 | return; |
| 1792 | } |
| 1793 | |
| 1794 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, |
| 1795 | errp)) { |
| 1796 | return; |
| 1797 | } |
| 1798 | |
| 1799 | if (state->new_bs->backing != NULL) { |
| 1800 | error_setg(errp, "The snapshot already has a backing image"); |
Alberto Garcia | 08b24cf | 2015-11-03 12:32:35 +0200 | [diff] [blame] | 1801 | return; |
| 1802 | } |
| 1803 | |
| 1804 | if (!state->new_bs->drv->supports_backing) { |
| 1805 | error_setg(errp, "The snapshot does not support backing images"); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1806 | } |
| 1807 | } |
| 1808 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1809 | static void external_snapshot_commit(BlkActionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1810 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1811 | ExternalSnapshotState *state = |
| 1812 | DO_UPCAST(ExternalSnapshotState, common, common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1813 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1814 | bdrv_set_aio_context(state->new_bs, state->aio_context); |
| 1815 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1816 | /* This removes our old bs and adds the new bs */ |
| 1817 | bdrv_append(state->new_bs, state->old_bs); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1818 | /* We don't need (or want) to use the transactional |
| 1819 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1820 | * don't want to abort all of them if one of them fails the reopen */ |
Kevin Wolf | 4c84498 | 2016-02-29 13:12:26 +0100 | [diff] [blame] | 1821 | if (!state->old_bs->copy_on_read) { |
| 1822 | bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR, |
| 1823 | NULL); |
| 1824 | } |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1825 | } |
| 1826 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1827 | static void external_snapshot_abort(BlkActionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1828 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1829 | ExternalSnapshotState *state = |
| 1830 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1831 | if (state->new_bs) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 1832 | bdrv_unref(state->new_bs); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1833 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1834 | } |
| 1835 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1836 | static void external_snapshot_clean(BlkActionState *common) |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1837 | { |
| 1838 | ExternalSnapshotState *state = |
| 1839 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1840 | if (state->aio_context) { |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1841 | bdrv_drained_end(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1842 | aio_context_release(state->aio_context); |
| 1843 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1844 | } |
| 1845 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1846 | typedef struct DriveBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1847 | BlkActionState common; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1848 | BlockDriverState *bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1849 | AioContext *aio_context; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1850 | BlockJob *job; |
| 1851 | } DriveBackupState; |
| 1852 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1853 | static void do_drive_backup(const char *device, const char *target, |
| 1854 | bool has_format, const char *format, |
| 1855 | enum MirrorSyncMode sync, |
| 1856 | bool has_mode, enum NewImageMode mode, |
| 1857 | bool has_speed, int64_t speed, |
| 1858 | bool has_bitmap, const char *bitmap, |
| 1859 | bool has_on_source_error, |
| 1860 | BlockdevOnError on_source_error, |
| 1861 | bool has_on_target_error, |
| 1862 | BlockdevOnError on_target_error, |
| 1863 | BlockJobTxn *txn, Error **errp); |
| 1864 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1865 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1866 | { |
| 1867 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1868 | BlockBackend *blk; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1869 | DriveBackup *backup; |
| 1870 | Error *local_err = NULL; |
| 1871 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1872 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1873 | backup = common->action->u.drive_backup.data; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1874 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1875 | blk = blk_by_name(backup->device); |
| 1876 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1877 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1878 | "Device '%s' not found", backup->device); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1879 | return; |
| 1880 | } |
| 1881 | |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1882 | if (!blk_is_available(blk)) { |
| 1883 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); |
| 1884 | return; |
| 1885 | } |
| 1886 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1887 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1888 | state->aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1889 | aio_context_acquire(state->aio_context); |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1890 | bdrv_drained_begin(blk_bs(blk)); |
| 1891 | state->bs = blk_bs(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1892 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1893 | do_drive_backup(backup->device, backup->target, |
| 1894 | backup->has_format, backup->format, |
| 1895 | backup->sync, |
| 1896 | backup->has_mode, backup->mode, |
| 1897 | backup->has_speed, backup->speed, |
| 1898 | backup->has_bitmap, backup->bitmap, |
| 1899 | backup->has_on_source_error, backup->on_source_error, |
| 1900 | backup->has_on_target_error, backup->on_target_error, |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1901 | common->block_job_txn, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1902 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1903 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1904 | return; |
| 1905 | } |
| 1906 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1907 | state->job = state->bs->job; |
| 1908 | } |
| 1909 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1910 | static void drive_backup_abort(BlkActionState *common) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1911 | { |
| 1912 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1913 | BlockDriverState *bs = state->bs; |
| 1914 | |
| 1915 | /* Only cancel if it's the job we started */ |
| 1916 | if (bs && bs->job && bs->job == state->job) { |
| 1917 | block_job_cancel_sync(bs->job); |
| 1918 | } |
| 1919 | } |
| 1920 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1921 | static void drive_backup_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1922 | { |
| 1923 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1924 | |
| 1925 | if (state->aio_context) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1926 | bdrv_drained_end(state->bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1927 | aio_context_release(state->aio_context); |
| 1928 | } |
| 1929 | } |
| 1930 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1931 | typedef struct BlockdevBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1932 | BlkActionState common; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1933 | BlockDriverState *bs; |
| 1934 | BlockJob *job; |
| 1935 | AioContext *aio_context; |
| 1936 | } BlockdevBackupState; |
| 1937 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1938 | static void do_blockdev_backup(const char *device, const char *target, |
| 1939 | enum MirrorSyncMode sync, |
| 1940 | bool has_speed, int64_t speed, |
| 1941 | bool has_on_source_error, |
| 1942 | BlockdevOnError on_source_error, |
| 1943 | bool has_on_target_error, |
| 1944 | BlockdevOnError on_target_error, |
| 1945 | BlockJobTxn *txn, Error **errp); |
| 1946 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1947 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1948 | { |
| 1949 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1950 | BlockdevBackup *backup; |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1951 | BlockBackend *blk, *target; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1952 | Error *local_err = NULL; |
| 1953 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1954 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1955 | backup = common->action->u.blockdev_backup.data; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1956 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1957 | blk = blk_by_name(backup->device); |
| 1958 | if (!blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 1959 | error_setg(errp, "Device '%s' not found", backup->device); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1960 | return; |
| 1961 | } |
| 1962 | |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1963 | if (!blk_is_available(blk)) { |
| 1964 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); |
| 1965 | return; |
| 1966 | } |
| 1967 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1968 | target = blk_by_name(backup->target); |
| 1969 | if (!target) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 1970 | error_setg(errp, "Device '%s' not found", backup->target); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1971 | return; |
| 1972 | } |
| 1973 | |
| 1974 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1975 | state->aio_context = blk_get_aio_context(blk); |
| 1976 | if (state->aio_context != blk_get_aio_context(target)) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1977 | state->aio_context = NULL; |
| 1978 | error_setg(errp, "Backup between two IO threads is not implemented"); |
| 1979 | return; |
| 1980 | } |
| 1981 | aio_context_acquire(state->aio_context); |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1982 | state->bs = blk_bs(blk); |
| 1983 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1984 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1985 | do_blockdev_backup(backup->device, backup->target, |
| 1986 | backup->sync, |
| 1987 | backup->has_speed, backup->speed, |
| 1988 | backup->has_on_source_error, backup->on_source_error, |
| 1989 | backup->has_on_target_error, backup->on_target_error, |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1990 | common->block_job_txn, &local_err); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1991 | if (local_err) { |
| 1992 | error_propagate(errp, local_err); |
| 1993 | return; |
| 1994 | } |
| 1995 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1996 | state->job = state->bs->job; |
| 1997 | } |
| 1998 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1999 | static void blockdev_backup_abort(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2000 | { |
| 2001 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 2002 | BlockDriverState *bs = state->bs; |
| 2003 | |
| 2004 | /* Only cancel if it's the job we started */ |
| 2005 | if (bs && bs->job && bs->job == state->job) { |
| 2006 | block_job_cancel_sync(bs->job); |
| 2007 | } |
| 2008 | } |
| 2009 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2010 | static void blockdev_backup_clean(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2011 | { |
| 2012 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 2013 | |
| 2014 | if (state->aio_context) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 2015 | bdrv_drained_end(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2016 | aio_context_release(state->aio_context); |
| 2017 | } |
| 2018 | } |
| 2019 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2020 | typedef struct BlockDirtyBitmapState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2021 | BlkActionState common; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2022 | BdrvDirtyBitmap *bitmap; |
| 2023 | BlockDriverState *bs; |
| 2024 | AioContext *aio_context; |
| 2025 | HBitmap *backup; |
| 2026 | bool prepared; |
| 2027 | } BlockDirtyBitmapState; |
| 2028 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2029 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2030 | Error **errp) |
| 2031 | { |
| 2032 | Error *local_err = NULL; |
| 2033 | BlockDirtyBitmapAdd *action; |
| 2034 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2035 | common, common); |
| 2036 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2037 | if (action_check_completion_mode(common, errp) < 0) { |
| 2038 | return; |
| 2039 | } |
| 2040 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2041 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2042 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
| 2043 | qmp_block_dirty_bitmap_add(action->node, action->name, |
| 2044 | action->has_granularity, action->granularity, |
| 2045 | &local_err); |
| 2046 | |
| 2047 | if (!local_err) { |
| 2048 | state->prepared = true; |
| 2049 | } else { |
| 2050 | error_propagate(errp, local_err); |
| 2051 | } |
| 2052 | } |
| 2053 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2054 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2055 | { |
| 2056 | BlockDirtyBitmapAdd *action; |
| 2057 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2058 | common, common); |
| 2059 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2060 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2061 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
| 2062 | * then the node reference and bitmap name must have been valid. |
| 2063 | */ |
| 2064 | if (state->prepared) { |
| 2065 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); |
| 2066 | } |
| 2067 | } |
| 2068 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2069 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2070 | Error **errp) |
| 2071 | { |
| 2072 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2073 | common, common); |
| 2074 | BlockDirtyBitmap *action; |
| 2075 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2076 | if (action_check_completion_mode(common, errp) < 0) { |
| 2077 | return; |
| 2078 | } |
| 2079 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2080 | action = common->action->u.block_dirty_bitmap_clear.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2081 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2082 | action->name, |
| 2083 | &state->bs, |
| 2084 | &state->aio_context, |
| 2085 | errp); |
| 2086 | if (!state->bitmap) { |
| 2087 | return; |
| 2088 | } |
| 2089 | |
| 2090 | if (bdrv_dirty_bitmap_frozen(state->bitmap)) { |
| 2091 | error_setg(errp, "Cannot modify a frozen bitmap"); |
| 2092 | return; |
| 2093 | } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) { |
| 2094 | error_setg(errp, "Cannot clear a disabled bitmap"); |
| 2095 | return; |
| 2096 | } |
| 2097 | |
| 2098 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); |
| 2099 | /* AioContext is released in .clean() */ |
| 2100 | } |
| 2101 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2102 | static void block_dirty_bitmap_clear_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2103 | { |
| 2104 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2105 | common, common); |
| 2106 | |
| 2107 | bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup); |
| 2108 | } |
| 2109 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2110 | static void block_dirty_bitmap_clear_commit(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2111 | { |
| 2112 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2113 | common, common); |
| 2114 | |
| 2115 | hbitmap_free(state->backup); |
| 2116 | } |
| 2117 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2118 | static void block_dirty_bitmap_clear_clean(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2119 | { |
| 2120 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2121 | common, common); |
| 2122 | |
| 2123 | if (state->aio_context) { |
| 2124 | aio_context_release(state->aio_context); |
| 2125 | } |
| 2126 | } |
| 2127 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2128 | static void abort_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2129 | { |
| 2130 | error_setg(errp, "Transaction aborted using Abort action"); |
| 2131 | } |
| 2132 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2133 | static void abort_commit(BlkActionState *common) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2134 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 2135 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2136 | } |
| 2137 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2138 | static const BlkActionOps actions[] = { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2139 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
| 2140 | .instance_size = sizeof(ExternalSnapshotState), |
| 2141 | .prepare = external_snapshot_prepare, |
| 2142 | .commit = external_snapshot_commit, |
| 2143 | .abort = external_snapshot_abort, |
Alberto Garcia | 4ad6f3d | 2015-11-13 15:00:24 +0200 | [diff] [blame] | 2144 | .clean = external_snapshot_clean, |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2145 | }, |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2146 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2147 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2148 | .prepare = external_snapshot_prepare, |
| 2149 | .commit = external_snapshot_commit, |
| 2150 | .abort = external_snapshot_abort, |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 2151 | .clean = external_snapshot_clean, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2152 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2153 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 2154 | .instance_size = sizeof(DriveBackupState), |
| 2155 | .prepare = drive_backup_prepare, |
| 2156 | .abort = drive_backup_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2157 | .clean = drive_backup_clean, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2158 | }, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2159 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
| 2160 | .instance_size = sizeof(BlockdevBackupState), |
| 2161 | .prepare = blockdev_backup_prepare, |
| 2162 | .abort = blockdev_backup_abort, |
| 2163 | .clean = blockdev_backup_clean, |
| 2164 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2165 | [TRANSACTION_ACTION_KIND_ABORT] = { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2166 | .instance_size = sizeof(BlkActionState), |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2167 | .prepare = abort_prepare, |
| 2168 | .commit = abort_commit, |
| 2169 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2170 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 2171 | .instance_size = sizeof(InternalSnapshotState), |
| 2172 | .prepare = internal_snapshot_prepare, |
| 2173 | .abort = internal_snapshot_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2174 | .clean = internal_snapshot_clean, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2175 | }, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2176 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
| 2177 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2178 | .prepare = block_dirty_bitmap_add_prepare, |
| 2179 | .abort = block_dirty_bitmap_add_abort, |
| 2180 | }, |
| 2181 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { |
| 2182 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2183 | .prepare = block_dirty_bitmap_clear_prepare, |
| 2184 | .commit = block_dirty_bitmap_clear_commit, |
| 2185 | .abort = block_dirty_bitmap_clear_abort, |
| 2186 | .clean = block_dirty_bitmap_clear_clean, |
| 2187 | } |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2188 | }; |
| 2189 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2190 | /** |
| 2191 | * Allocate a TransactionProperties structure if necessary, and fill |
| 2192 | * that structure with desired defaults if they are unset. |
| 2193 | */ |
| 2194 | static TransactionProperties *get_transaction_properties( |
| 2195 | TransactionProperties *props) |
| 2196 | { |
| 2197 | if (!props) { |
| 2198 | props = g_new0(TransactionProperties, 1); |
| 2199 | } |
| 2200 | |
| 2201 | if (!props->has_completion_mode) { |
| 2202 | props->has_completion_mode = true; |
| 2203 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; |
| 2204 | } |
| 2205 | |
| 2206 | return props; |
| 2207 | } |
| 2208 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2209 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2210 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 2211 | * any fail then we roll back all operations in the group. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2212 | */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2213 | void qmp_transaction(TransactionActionList *dev_list, |
| 2214 | bool has_props, |
| 2215 | struct TransactionProperties *props, |
| 2216 | Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2217 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2218 | TransactionActionList *dev_entry = dev_list; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2219 | BlockJobTxn *block_job_txn = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2220 | BlkActionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 2221 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2222 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2223 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2224 | QSIMPLEQ_INIT(&snap_bdrv_states); |
| 2225 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2226 | /* Does this transaction get canceled as a group on failure? |
| 2227 | * If not, we don't really need to make a BlockJobTxn. |
| 2228 | */ |
| 2229 | props = get_transaction_properties(props); |
| 2230 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 2231 | block_job_txn = block_job_txn_new(); |
| 2232 | } |
| 2233 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2234 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2235 | bdrv_drain_all(); |
| 2236 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2237 | /* 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] | 2238 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2239 | TransactionAction *dev_info = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2240 | const BlkActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2241 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2242 | dev_info = dev_entry->value; |
| 2243 | dev_entry = dev_entry->next; |
| 2244 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2245 | assert(dev_info->type < ARRAY_SIZE(actions)); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2246 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2247 | ops = &actions[dev_info->type]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 2248 | assert(ops->instance_size > 0); |
| 2249 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2250 | state = g_malloc0(ops->instance_size); |
| 2251 | state->ops = ops; |
| 2252 | state->action = dev_info; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2253 | state->block_job_txn = block_job_txn; |
| 2254 | state->txn_props = props; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2255 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2256 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2257 | state->ops->prepare(state, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2258 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2259 | error_propagate(errp, local_err); |
| 2260 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2261 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2262 | } |
| 2263 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2264 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 2265 | if (state->ops->commit) { |
| 2266 | state->ops->commit(state); |
| 2267 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2268 | } |
| 2269 | |
| 2270 | /* success */ |
| 2271 | goto exit; |
| 2272 | |
| 2273 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2274 | /* failure, and it is all-or-none; roll back all operations */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2275 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
| 2276 | if (state->ops->abort) { |
| 2277 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2278 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2279 | } |
| 2280 | exit: |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2281 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
| 2282 | if (state->ops->clean) { |
| 2283 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2284 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2285 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2286 | } |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2287 | if (!has_props) { |
| 2288 | qapi_free_TransactionProperties(props); |
| 2289 | } |
| 2290 | block_job_txn_unref(block_job_txn); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2291 | } |
| 2292 | |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 2293 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2294 | { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2295 | Error *local_err = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2296 | |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2297 | qmp_blockdev_open_tray(device, has_force, force, &local_err); |
| 2298 | if (local_err) { |
| 2299 | error_propagate(errp, local_err); |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 2300 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2301 | } |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 2302 | |
Max Reitz | 6e0abc2 | 2015-12-11 16:23:05 +0100 | [diff] [blame] | 2303 | qmp_x_blockdev_remove_medium(device, errp); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2304 | } |
| 2305 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2306 | void qmp_block_passwd(bool has_device, const char *device, |
| 2307 | bool has_node_name, const char *node_name, |
| 2308 | const char *password, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2309 | { |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2310 | Error *local_err = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2311 | BlockDriverState *bs; |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2312 | AioContext *aio_context; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2313 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2314 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 2315 | has_node_name ? node_name : NULL, |
| 2316 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2317 | if (local_err) { |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2318 | error_propagate(errp, local_err); |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 2319 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2320 | } |
| 2321 | |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2322 | aio_context = bdrv_get_aio_context(bs); |
| 2323 | aio_context_acquire(aio_context); |
| 2324 | |
Markus Armbruster | 4d2855a | 2015-01-29 10:37:00 +0100 | [diff] [blame] | 2325 | bdrv_add_key(bs, password, errp); |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2326 | |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2327 | aio_context_release(aio_context); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2328 | } |
| 2329 | |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2330 | void qmp_blockdev_open_tray(const char *device, bool has_force, bool force, |
| 2331 | Error **errp) |
| 2332 | { |
| 2333 | BlockBackend *blk; |
| 2334 | bool locked; |
| 2335 | |
| 2336 | if (!has_force) { |
| 2337 | force = false; |
| 2338 | } |
| 2339 | |
| 2340 | blk = blk_by_name(device); |
| 2341 | if (!blk) { |
| 2342 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2343 | "Device '%s' not found", device); |
| 2344 | return; |
| 2345 | } |
| 2346 | |
| 2347 | if (!blk_dev_has_removable_media(blk)) { |
| 2348 | error_setg(errp, "Device '%s' is not removable", device); |
| 2349 | return; |
| 2350 | } |
| 2351 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2352 | if (!blk_dev_has_tray(blk)) { |
| 2353 | /* Ignore this command on tray-less devices */ |
| 2354 | return; |
| 2355 | } |
| 2356 | |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2357 | if (blk_dev_is_tray_open(blk)) { |
| 2358 | return; |
| 2359 | } |
| 2360 | |
| 2361 | locked = blk_dev_is_medium_locked(blk); |
| 2362 | if (locked) { |
| 2363 | blk_dev_eject_request(blk, force); |
| 2364 | } |
| 2365 | |
| 2366 | if (!locked || force) { |
| 2367 | blk_dev_change_media_cb(blk, false); |
| 2368 | } |
| 2369 | } |
| 2370 | |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2371 | void qmp_blockdev_close_tray(const char *device, Error **errp) |
| 2372 | { |
| 2373 | BlockBackend *blk; |
| 2374 | |
| 2375 | blk = blk_by_name(device); |
| 2376 | if (!blk) { |
| 2377 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2378 | "Device '%s' not found", device); |
| 2379 | return; |
| 2380 | } |
| 2381 | |
| 2382 | if (!blk_dev_has_removable_media(blk)) { |
| 2383 | error_setg(errp, "Device '%s' is not removable", device); |
| 2384 | return; |
| 2385 | } |
| 2386 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2387 | if (!blk_dev_has_tray(blk)) { |
| 2388 | /* Ignore this command on tray-less devices */ |
| 2389 | return; |
| 2390 | } |
| 2391 | |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2392 | if (!blk_dev_is_tray_open(blk)) { |
| 2393 | return; |
| 2394 | } |
| 2395 | |
| 2396 | blk_dev_change_media_cb(blk, true); |
| 2397 | } |
| 2398 | |
Max Reitz | 6e0abc2 | 2015-12-11 16:23:05 +0100 | [diff] [blame] | 2399 | void qmp_x_blockdev_remove_medium(const char *device, Error **errp) |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2400 | { |
| 2401 | BlockBackend *blk; |
| 2402 | BlockDriverState *bs; |
| 2403 | AioContext *aio_context; |
| 2404 | bool has_device; |
| 2405 | |
| 2406 | blk = blk_by_name(device); |
| 2407 | if (!blk) { |
| 2408 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2409 | "Device '%s' not found", device); |
| 2410 | return; |
| 2411 | } |
| 2412 | |
| 2413 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2414 | has_device = blk_get_attached_dev(blk); |
| 2415 | |
| 2416 | if (has_device && !blk_dev_has_removable_media(blk)) { |
| 2417 | error_setg(errp, "Device '%s' is not removable", device); |
| 2418 | return; |
| 2419 | } |
| 2420 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2421 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2422 | error_setg(errp, "Tray of device '%s' is not open", device); |
| 2423 | return; |
| 2424 | } |
| 2425 | |
| 2426 | bs = blk_bs(blk); |
| 2427 | if (!bs) { |
| 2428 | return; |
| 2429 | } |
| 2430 | |
| 2431 | aio_context = bdrv_get_aio_context(bs); |
| 2432 | aio_context_acquire(aio_context); |
| 2433 | |
| 2434 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
| 2435 | goto out; |
| 2436 | } |
| 2437 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2438 | blk_remove_bs(blk); |
| 2439 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2440 | if (!blk_dev_has_tray(blk)) { |
| 2441 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be |
| 2442 | * called at all); therefore, the medium needs to be ejected here. |
| 2443 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load |
| 2444 | * value passed here (i.e. false). */ |
| 2445 | blk_dev_change_media_cb(blk, false); |
| 2446 | } |
| 2447 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2448 | out: |
| 2449 | aio_context_release(aio_context); |
| 2450 | } |
| 2451 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2452 | static void qmp_blockdev_insert_anon_medium(const char *device, |
| 2453 | BlockDriverState *bs, Error **errp) |
| 2454 | { |
| 2455 | BlockBackend *blk; |
| 2456 | bool has_device; |
| 2457 | |
| 2458 | blk = blk_by_name(device); |
| 2459 | if (!blk) { |
| 2460 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2461 | "Device '%s' not found", device); |
| 2462 | return; |
| 2463 | } |
| 2464 | |
| 2465 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2466 | has_device = blk_get_attached_dev(blk); |
| 2467 | |
| 2468 | if (has_device && !blk_dev_has_removable_media(blk)) { |
| 2469 | error_setg(errp, "Device '%s' is not removable", device); |
| 2470 | return; |
| 2471 | } |
| 2472 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2473 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2474 | error_setg(errp, "Tray of device '%s' is not open", device); |
| 2475 | return; |
| 2476 | } |
| 2477 | |
| 2478 | if (blk_bs(blk)) { |
| 2479 | error_setg(errp, "There already is a medium in device '%s'", device); |
| 2480 | return; |
| 2481 | } |
| 2482 | |
| 2483 | blk_insert_bs(blk, bs); |
| 2484 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2485 | if (!blk_dev_has_tray(blk)) { |
| 2486 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be |
| 2487 | * called at all); therefore, the medium needs to be pushed into the |
| 2488 | * slot here. |
| 2489 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load |
| 2490 | * value passed here (i.e. true). */ |
| 2491 | blk_dev_change_media_cb(blk, true); |
| 2492 | } |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2493 | } |
| 2494 | |
Max Reitz | 6e0abc2 | 2015-12-11 16:23:05 +0100 | [diff] [blame] | 2495 | void qmp_x_blockdev_insert_medium(const char *device, const char *node_name, |
| 2496 | Error **errp) |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2497 | { |
| 2498 | BlockDriverState *bs; |
| 2499 | |
| 2500 | bs = bdrv_find_node(node_name); |
| 2501 | if (!bs) { |
| 2502 | error_setg(errp, "Node '%s' not found", node_name); |
| 2503 | return; |
| 2504 | } |
| 2505 | |
| 2506 | if (bs->blk) { |
| 2507 | error_setg(errp, "Node '%s' is already in use by '%s'", node_name, |
| 2508 | blk_name(bs->blk)); |
| 2509 | return; |
| 2510 | } |
| 2511 | |
| 2512 | qmp_blockdev_insert_anon_medium(device, bs, errp); |
| 2513 | } |
| 2514 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2515 | void qmp_blockdev_change_medium(const char *device, const char *filename, |
| 2516 | bool has_format, const char *format, |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2517 | bool has_read_only, |
| 2518 | BlockdevChangeReadOnlyMode read_only, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2519 | Error **errp) |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2520 | { |
| 2521 | BlockBackend *blk; |
| 2522 | BlockDriverState *medium_bs = NULL; |
| 2523 | int bdrv_flags, ret; |
| 2524 | QDict *options = NULL; |
| 2525 | Error *err = NULL; |
| 2526 | |
| 2527 | blk = blk_by_name(device); |
| 2528 | if (!blk) { |
| 2529 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2530 | "Device '%s' not found", device); |
| 2531 | goto fail; |
| 2532 | } |
| 2533 | |
| 2534 | if (blk_bs(blk)) { |
| 2535 | blk_update_root_state(blk); |
| 2536 | } |
| 2537 | |
| 2538 | bdrv_flags = blk_get_open_flags_from_root_state(blk); |
Alyssa Milburn | 156abc2 | 2016-02-06 13:36:18 +0000 | [diff] [blame] | 2539 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
| 2540 | BDRV_O_PROTOCOL); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2541 | |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2542 | if (!has_read_only) { |
| 2543 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; |
| 2544 | } |
| 2545 | |
| 2546 | switch (read_only) { |
| 2547 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: |
| 2548 | break; |
| 2549 | |
| 2550 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: |
| 2551 | bdrv_flags &= ~BDRV_O_RDWR; |
| 2552 | break; |
| 2553 | |
| 2554 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: |
| 2555 | bdrv_flags |= BDRV_O_RDWR; |
| 2556 | break; |
| 2557 | |
| 2558 | default: |
| 2559 | abort(); |
| 2560 | } |
| 2561 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2562 | if (has_format) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2563 | options = qdict_new(); |
| 2564 | qdict_put(options, "driver", qstring_from_str(format)); |
| 2565 | } |
| 2566 | |
| 2567 | assert(!medium_bs); |
| 2568 | ret = bdrv_open(&medium_bs, filename, NULL, options, bdrv_flags, errp); |
| 2569 | if (ret < 0) { |
| 2570 | goto fail; |
| 2571 | } |
| 2572 | |
| 2573 | blk_apply_root_state(blk, medium_bs); |
| 2574 | |
| 2575 | bdrv_add_key(medium_bs, NULL, &err); |
| 2576 | if (err) { |
| 2577 | error_propagate(errp, err); |
| 2578 | goto fail; |
| 2579 | } |
| 2580 | |
| 2581 | qmp_blockdev_open_tray(device, false, false, &err); |
| 2582 | if (err) { |
| 2583 | error_propagate(errp, err); |
| 2584 | goto fail; |
| 2585 | } |
| 2586 | |
Max Reitz | 6e0abc2 | 2015-12-11 16:23:05 +0100 | [diff] [blame] | 2587 | qmp_x_blockdev_remove_medium(device, &err); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2588 | if (err) { |
| 2589 | error_propagate(errp, err); |
| 2590 | goto fail; |
| 2591 | } |
| 2592 | |
| 2593 | qmp_blockdev_insert_anon_medium(device, medium_bs, &err); |
| 2594 | if (err) { |
| 2595 | error_propagate(errp, err); |
| 2596 | goto fail; |
| 2597 | } |
| 2598 | |
| 2599 | qmp_blockdev_close_tray(device, errp); |
| 2600 | |
| 2601 | fail: |
| 2602 | /* If the medium has been inserted, the device has its own reference, so |
| 2603 | * ours must be relinquished; and if it has not been inserted successfully, |
| 2604 | * the reference must be relinquished anyway */ |
| 2605 | bdrv_unref(medium_bs); |
| 2606 | } |
| 2607 | |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2608 | /* throttling disk I/O limits */ |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2609 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2610 | int64_t bps_wr, |
| 2611 | int64_t iops, |
| 2612 | int64_t iops_rd, |
| 2613 | int64_t iops_wr, |
| 2614 | bool has_bps_max, |
| 2615 | int64_t bps_max, |
| 2616 | bool has_bps_rd_max, |
| 2617 | int64_t bps_rd_max, |
| 2618 | bool has_bps_wr_max, |
| 2619 | int64_t bps_wr_max, |
| 2620 | bool has_iops_max, |
| 2621 | int64_t iops_max, |
| 2622 | bool has_iops_rd_max, |
| 2623 | int64_t iops_rd_max, |
| 2624 | bool has_iops_wr_max, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2625 | int64_t iops_wr_max, |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2626 | bool has_bps_max_length, |
| 2627 | int64_t bps_max_length, |
| 2628 | bool has_bps_rd_max_length, |
| 2629 | int64_t bps_rd_max_length, |
| 2630 | bool has_bps_wr_max_length, |
| 2631 | int64_t bps_wr_max_length, |
| 2632 | bool has_iops_max_length, |
| 2633 | int64_t iops_max_length, |
| 2634 | bool has_iops_rd_max_length, |
| 2635 | int64_t iops_rd_max_length, |
| 2636 | bool has_iops_wr_max_length, |
| 2637 | int64_t iops_wr_max_length, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2638 | bool has_iops_size, |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2639 | int64_t iops_size, |
| 2640 | bool has_group, |
| 2641 | const char *group, Error **errp) |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2642 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2643 | ThrottleConfig cfg; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2644 | BlockDriverState *bs; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2645 | BlockBackend *blk; |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2646 | AioContext *aio_context; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2647 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2648 | blk = blk_by_name(device); |
| 2649 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 2650 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2651 | "Device '%s' not found", device); |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2652 | return; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2653 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2654 | |
| 2655 | aio_context = blk_get_aio_context(blk); |
| 2656 | aio_context_acquire(aio_context); |
| 2657 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2658 | bs = blk_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2659 | if (!bs) { |
| 2660 | error_setg(errp, "Device '%s' has no medium", device); |
| 2661 | goto out; |
| 2662 | } |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2663 | |
Kevin Wolf | 76b2232 | 2016-04-04 17:11:13 +0200 | [diff] [blame] | 2664 | /* The BlockBackend must be the only parent */ |
| 2665 | assert(QLIST_FIRST(&bs->parents)); |
| 2666 | if (QLIST_NEXT(QLIST_FIRST(&bs->parents), next_parent)) { |
| 2667 | error_setg(errp, "Cannot throttle device with multiple parents"); |
| 2668 | goto out; |
| 2669 | } |
| 2670 | |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 2671 | throttle_config_init(&cfg); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2672 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; |
| 2673 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; |
| 2674 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2675 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2676 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; |
| 2677 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; |
| 2678 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; |
| 2679 | |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2680 | if (has_bps_max) { |
| 2681 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; |
| 2682 | } |
| 2683 | if (has_bps_rd_max) { |
| 2684 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; |
| 2685 | } |
| 2686 | if (has_bps_wr_max) { |
| 2687 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; |
| 2688 | } |
| 2689 | if (has_iops_max) { |
| 2690 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; |
| 2691 | } |
| 2692 | if (has_iops_rd_max) { |
| 2693 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; |
| 2694 | } |
| 2695 | if (has_iops_wr_max) { |
| 2696 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; |
| 2697 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2698 | |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2699 | if (has_bps_max_length) { |
| 2700 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = bps_max_length; |
| 2701 | } |
| 2702 | if (has_bps_rd_max_length) { |
| 2703 | cfg.buckets[THROTTLE_BPS_READ].burst_length = bps_rd_max_length; |
| 2704 | } |
| 2705 | if (has_bps_wr_max_length) { |
| 2706 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = bps_wr_max_length; |
| 2707 | } |
| 2708 | if (has_iops_max_length) { |
| 2709 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = iops_max_length; |
| 2710 | } |
| 2711 | if (has_iops_rd_max_length) { |
| 2712 | cfg.buckets[THROTTLE_OPS_READ].burst_length = iops_rd_max_length; |
| 2713 | } |
| 2714 | if (has_iops_wr_max_length) { |
| 2715 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = iops_wr_max_length; |
| 2716 | } |
| 2717 | |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2718 | if (has_iops_size) { |
| 2719 | cfg.op_size = iops_size; |
| 2720 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2721 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 2722 | if (!throttle_is_valid(&cfg, errp)) { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2723 | goto out; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2724 | } |
| 2725 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2726 | if (throttle_enabled(&cfg)) { |
| 2727 | /* Enable I/O limits if they're not enabled yet, otherwise |
| 2728 | * just update the throttling group. */ |
Alberto Garcia | a0d64a6 | 2015-11-04 15:15:36 +0200 | [diff] [blame] | 2729 | if (!bs->throttle_state) { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2730 | bdrv_io_limits_enable(bs, has_group ? group : device); |
| 2731 | } else if (has_group) { |
| 2732 | bdrv_io_limits_update_group(bs, group); |
| 2733 | } |
| 2734 | /* Set the new throttling configuration */ |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2735 | bdrv_set_io_limits(bs, &cfg); |
Alberto Garcia | a0d64a6 | 2015-11-04 15:15:36 +0200 | [diff] [blame] | 2736 | } else if (bs->throttle_state) { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2737 | /* If all throttling settings are set to 0, disable I/O limits */ |
| 2738 | bdrv_io_limits_disable(bs); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2739 | } |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2740 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2741 | out: |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2742 | aio_context_release(aio_context); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2743 | } |
| 2744 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2745 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
| 2746 | bool has_granularity, uint32_t granularity, |
| 2747 | Error **errp) |
| 2748 | { |
| 2749 | AioContext *aio_context; |
| 2750 | BlockDriverState *bs; |
| 2751 | |
| 2752 | if (!name || name[0] == '\0') { |
| 2753 | error_setg(errp, "Bitmap name cannot be empty"); |
| 2754 | return; |
| 2755 | } |
| 2756 | |
| 2757 | bs = bdrv_lookup_bs(node, node, errp); |
| 2758 | if (!bs) { |
| 2759 | return; |
| 2760 | } |
| 2761 | |
| 2762 | aio_context = bdrv_get_aio_context(bs); |
| 2763 | aio_context_acquire(aio_context); |
| 2764 | |
| 2765 | if (has_granularity) { |
| 2766 | if (granularity < 512 || !is_power_of_2(granularity)) { |
| 2767 | error_setg(errp, "Granularity must be power of 2 " |
| 2768 | "and at least 512"); |
| 2769 | goto out; |
| 2770 | } |
| 2771 | } else { |
| 2772 | /* Default to cluster size, if available: */ |
| 2773 | granularity = bdrv_get_default_bitmap_granularity(bs); |
| 2774 | } |
| 2775 | |
| 2776 | bdrv_create_dirty_bitmap(bs, granularity, name, errp); |
| 2777 | |
| 2778 | out: |
| 2779 | aio_context_release(aio_context); |
| 2780 | } |
| 2781 | |
| 2782 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, |
| 2783 | Error **errp) |
| 2784 | { |
| 2785 | AioContext *aio_context; |
| 2786 | BlockDriverState *bs; |
| 2787 | BdrvDirtyBitmap *bitmap; |
| 2788 | |
| 2789 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); |
| 2790 | if (!bitmap || !bs) { |
| 2791 | return; |
| 2792 | } |
| 2793 | |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2794 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2795 | error_setg(errp, |
| 2796 | "Bitmap '%s' is currently frozen and cannot be removed", |
| 2797 | name); |
| 2798 | goto out; |
| 2799 | } |
John Snow | 20dca81 | 2015-04-17 19:50:02 -0400 | [diff] [blame] | 2800 | bdrv_dirty_bitmap_make_anon(bitmap); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2801 | bdrv_release_dirty_bitmap(bs, bitmap); |
| 2802 | |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2803 | out: |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2804 | aio_context_release(aio_context); |
| 2805 | } |
| 2806 | |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2807 | /** |
| 2808 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap |
| 2809 | * immediately after a full backup operation. |
| 2810 | */ |
| 2811 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, |
| 2812 | Error **errp) |
| 2813 | { |
| 2814 | AioContext *aio_context; |
| 2815 | BdrvDirtyBitmap *bitmap; |
| 2816 | BlockDriverState *bs; |
| 2817 | |
| 2818 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); |
| 2819 | if (!bitmap || !bs) { |
| 2820 | return; |
| 2821 | } |
| 2822 | |
| 2823 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2824 | error_setg(errp, |
| 2825 | "Bitmap '%s' is currently frozen and cannot be modified", |
| 2826 | name); |
| 2827 | goto out; |
| 2828 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { |
| 2829 | error_setg(errp, |
| 2830 | "Bitmap '%s' is currently disabled and cannot be cleared", |
| 2831 | name); |
| 2832 | goto out; |
| 2833 | } |
| 2834 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2835 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2836 | |
| 2837 | out: |
| 2838 | aio_context_release(aio_context); |
| 2839 | } |
| 2840 | |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2841 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2842 | { |
| 2843 | const char *id = qdict_get_str(qdict, "id"); |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 2844 | BlockBackend *blk; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2845 | BlockDriverState *bs; |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2846 | AioContext *aio_context; |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 2847 | Error *local_err = NULL; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2848 | |
Kevin Wolf | 2073d41 | 2016-02-23 17:50:37 +0100 | [diff] [blame] | 2849 | bs = bdrv_find_node(id); |
| 2850 | if (bs) { |
| 2851 | qmp_x_blockdev_del(false, NULL, true, id, &local_err); |
| 2852 | if (local_err) { |
| 2853 | error_report_err(local_err); |
| 2854 | } |
| 2855 | return; |
| 2856 | } |
| 2857 | |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 2858 | blk = blk_by_name(id); |
| 2859 | if (!blk) { |
Markus Armbruster | b1422f2 | 2014-05-16 11:00:09 +0200 | [diff] [blame] | 2860 | error_report("Device '%s' not found", id); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2861 | return; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2862 | } |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2863 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 2864 | if (!blk_legacy_dinfo(blk)) { |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 2865 | error_report("Deleting device added with blockdev-add" |
| 2866 | " is not supported"); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2867 | return; |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 2868 | } |
| 2869 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2870 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2871 | aio_context_acquire(aio_context); |
| 2872 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2873 | bs = blk_bs(blk); |
| 2874 | if (bs) { |
| 2875 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
| 2876 | error_report_err(local_err); |
| 2877 | aio_context_release(aio_context); |
| 2878 | return; |
| 2879 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2880 | |
Max Reitz | 938abd4 | 2016-01-29 16:36:09 +0100 | [diff] [blame] | 2881 | blk_remove_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2882 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2883 | |
Max Reitz | 7c73587 | 2016-03-16 19:54:39 +0100 | [diff] [blame] | 2884 | /* Make the BlockBackend and the attached BlockDriverState anonymous */ |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 2885 | monitor_remove_blk(blk); |
| 2886 | |
Max Reitz | 7c73587 | 2016-03-16 19:54:39 +0100 | [diff] [blame] | 2887 | /* If this BlockBackend has a device attached to it, its refcount will be |
| 2888 | * 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] | 2889 | */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 2890 | if (blk_get_attached_dev(blk)) { |
Stefan Hajnoczi | 293c51a | 2013-06-05 10:33:14 +0200 | [diff] [blame] | 2891 | /* Further I/O must not pause the guest */ |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 2892 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
| 2893 | BLOCKDEV_ON_ERROR_REPORT); |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 2894 | } else { |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 2895 | blk_unref(blk); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2896 | } |
| 2897 | |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2898 | aio_context_release(aio_context); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2899 | } |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2900 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2901 | void qmp_block_resize(bool has_device, const char *device, |
| 2902 | bool has_node_name, const char *node_name, |
| 2903 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2904 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2905 | Error *local_err = NULL; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2906 | BlockDriverState *bs; |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2907 | AioContext *aio_context; |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2908 | int ret; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2909 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2910 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 2911 | has_node_name ? node_name : NULL, |
| 2912 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2913 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2914 | error_propagate(errp, local_err); |
| 2915 | return; |
| 2916 | } |
| 2917 | |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2918 | aio_context = bdrv_get_aio_context(bs); |
| 2919 | aio_context_acquire(aio_context); |
| 2920 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2921 | if (!bdrv_is_first_non_filter(bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2922 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2923 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2924 | } |
| 2925 | |
| 2926 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2927 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2928 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2929 | } |
| 2930 | |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2931 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2932 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2933 | goto out; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2934 | } |
| 2935 | |
Peter Lieven | 92b7a08 | 2013-03-11 11:04:24 +0100 | [diff] [blame] | 2936 | /* complete all in-flight operations before resizing the device */ |
| 2937 | bdrv_drain_all(); |
| 2938 | |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2939 | ret = bdrv_truncate(bs, size); |
| 2940 | switch (ret) { |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2941 | case 0: |
| 2942 | break; |
| 2943 | case -ENOMEDIUM: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2944 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2945 | break; |
| 2946 | case -ENOTSUP: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2947 | error_setg(errp, QERR_UNSUPPORTED); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2948 | break; |
| 2949 | case -EACCES: |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 2950 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2951 | break; |
| 2952 | case -EBUSY: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2953 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2954 | break; |
| 2955 | default: |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2956 | error_setg_errno(errp, -ret, "Could not resize"); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2957 | break; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2958 | } |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2959 | |
| 2960 | out: |
| 2961 | aio_context_release(aio_context); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2962 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2963 | |
Jeff Cody | 9abf2db | 2012-09-27 13:29:14 -0400 | [diff] [blame] | 2964 | static void block_job_cb(void *opaque, int ret) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2965 | { |
Stefan Hajnoczi | 723c5d9 | 2014-10-21 12:03:53 +0100 | [diff] [blame] | 2966 | /* Note that this function may be executed from another AioContext besides |
| 2967 | * the QEMU main loop. If you need to access anything that assumes the |
| 2968 | * QEMU global mutex, use a BH or introduce a mutex. |
| 2969 | */ |
| 2970 | |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2971 | BlockDriverState *bs = opaque; |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2972 | const char *msg = NULL; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2973 | |
Jeff Cody | 9abf2db | 2012-09-27 13:29:14 -0400 | [diff] [blame] | 2974 | trace_block_job_cb(bs, bs->job, ret); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2975 | |
| 2976 | assert(bs->job); |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2977 | |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2978 | if (ret < 0) { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2979 | msg = strerror(-ret); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2980 | } |
| 2981 | |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2982 | if (block_job_is_cancelled(bs->job)) { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2983 | block_job_event_cancelled(bs->job); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2984 | } else { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2985 | block_job_event_completed(bs->job, msg); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2986 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2987 | } |
| 2988 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2989 | void qmp_block_stream(const char *device, |
| 2990 | bool has_base, const char *base, |
| 2991 | bool has_backing_file, const char *backing_file, |
| 2992 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2993 | bool has_on_error, BlockdevOnError on_error, |
| 2994 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2995 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2996 | BlockBackend *blk; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2997 | BlockDriverState *bs; |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2998 | BlockDriverState *base_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2999 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3000 | Error *local_err = NULL; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3001 | const char *base_name = NULL; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3002 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3003 | if (!has_on_error) { |
| 3004 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3005 | } |
| 3006 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3007 | blk = blk_by_name(device); |
| 3008 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3009 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3010 | "Device '%s' not found", device); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3011 | return; |
| 3012 | } |
| 3013 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3014 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3015 | aio_context_acquire(aio_context); |
| 3016 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3017 | if (!blk_is_available(blk)) { |
| 3018 | error_setg(errp, "Device '%s' has no medium", device); |
| 3019 | goto out; |
| 3020 | } |
| 3021 | bs = blk_bs(blk); |
| 3022 | |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 3023 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3024 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 3025 | } |
| 3026 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3027 | if (has_base) { |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3028 | base_bs = bdrv_find_backing_image(bs, base); |
| 3029 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3030 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3031 | goto out; |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3032 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3033 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3034 | base_name = base; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3035 | } |
| 3036 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3037 | /* if we are streaming the entire chain, the result will have no backing |
| 3038 | * file, and specifying one is therefore an error */ |
| 3039 | if (base_bs == NULL && has_backing_file) { |
| 3040 | error_setg(errp, "backing file specified, but streaming the " |
| 3041 | "entire chain"); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3042 | goto out; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3043 | } |
| 3044 | |
| 3045 | /* backing_file string overrides base bs filename */ |
| 3046 | base_name = has_backing_file ? backing_file : base_name; |
| 3047 | |
| 3048 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3049 | on_error, block_job_cb, bs, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3050 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3051 | error_propagate(errp, local_err); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3052 | goto out; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3053 | } |
| 3054 | |
| 3055 | trace_qmp_block_stream(bs, bs->job); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3056 | |
| 3057 | out: |
| 3058 | aio_context_release(aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3059 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3060 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3061 | void qmp_block_commit(const char *device, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3062 | bool has_base, const char *base, |
| 3063 | bool has_top, const char *top, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3064 | bool has_backing_file, const char *backing_file, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3065 | bool has_speed, int64_t speed, |
| 3066 | Error **errp) |
| 3067 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3068 | BlockBackend *blk; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3069 | BlockDriverState *bs; |
| 3070 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3071 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3072 | Error *local_err = NULL; |
| 3073 | /* This will be part of the QMP command, if/when the |
| 3074 | * BlockdevOnError change for blkmirror makes it in |
| 3075 | */ |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 3076 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3077 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 3078 | if (!has_speed) { |
| 3079 | speed = 0; |
| 3080 | } |
| 3081 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3082 | /* Important Note: |
| 3083 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 3084 | * live commit feature versions; for this to work, we must make sure to |
| 3085 | * perform the device lookup before any generic errors that may occur in a |
| 3086 | * scenario in which all optional arguments are omitted. */ |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3087 | blk = blk_by_name(device); |
| 3088 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3089 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3090 | "Device '%s' not found", device); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3091 | return; |
| 3092 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3093 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3094 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3095 | aio_context_acquire(aio_context); |
| 3096 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3097 | if (!blk_is_available(blk)) { |
| 3098 | error_setg(errp, "Device '%s' has no medium", device); |
| 3099 | goto out; |
| 3100 | } |
| 3101 | bs = blk_bs(blk); |
| 3102 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3103 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3104 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 3105 | } |
| 3106 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3107 | /* default top_bs is the active layer */ |
| 3108 | top_bs = bs; |
| 3109 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3110 | if (has_top && top) { |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3111 | if (strcmp(bs->filename, top) != 0) { |
| 3112 | top_bs = bdrv_find_backing_image(bs, top); |
| 3113 | } |
| 3114 | } |
| 3115 | |
| 3116 | if (top_bs == NULL) { |
| 3117 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3118 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3119 | } |
| 3120 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3121 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 3122 | |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3123 | if (has_base && base) { |
| 3124 | base_bs = bdrv_find_backing_image(top_bs, base); |
| 3125 | } else { |
| 3126 | base_bs = bdrv_find_base(top_bs); |
| 3127 | } |
| 3128 | |
| 3129 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3130 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3131 | goto out; |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3132 | } |
| 3133 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3134 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 3135 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3136 | if (bdrv_op_is_blocked(base_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 3137 | goto out; |
| 3138 | } |
| 3139 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3140 | /* Do not allow attempts to commit an image into itself */ |
| 3141 | if (top_bs == base_bs) { |
| 3142 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3143 | goto out; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3144 | } |
| 3145 | |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3146 | if (top_bs == bs) { |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3147 | if (has_backing_file) { |
| 3148 | error_setg(errp, "'backing-file' specified," |
| 3149 | " but 'top' is the active layer"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3150 | goto out; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3151 | } |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3152 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
| 3153 | bs, &local_err); |
| 3154 | } else { |
| 3155 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3156 | has_backing_file ? backing_file : NULL, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3157 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3158 | if (local_err != NULL) { |
| 3159 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3160 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3161 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3162 | |
| 3163 | out: |
| 3164 | aio_context_release(aio_context); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3165 | } |
| 3166 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3167 | static void do_drive_backup(const char *device, const char *target, |
| 3168 | bool has_format, const char *format, |
| 3169 | enum MirrorSyncMode sync, |
| 3170 | bool has_mode, enum NewImageMode mode, |
| 3171 | bool has_speed, int64_t speed, |
| 3172 | bool has_bitmap, const char *bitmap, |
| 3173 | bool has_on_source_error, |
| 3174 | BlockdevOnError on_source_error, |
| 3175 | bool has_on_target_error, |
| 3176 | BlockdevOnError on_target_error, |
| 3177 | BlockJobTxn *txn, Error **errp) |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3178 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3179 | BlockBackend *blk; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3180 | BlockDriverState *bs; |
| 3181 | BlockDriverState *target_bs; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3182 | BlockDriverState *source = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3183 | BdrvDirtyBitmap *bmap = NULL; |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3184 | AioContext *aio_context; |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3185 | QDict *options = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3186 | Error *local_err = NULL; |
| 3187 | int flags; |
| 3188 | int64_t size; |
| 3189 | int ret; |
| 3190 | |
| 3191 | if (!has_speed) { |
| 3192 | speed = 0; |
| 3193 | } |
| 3194 | if (!has_on_source_error) { |
| 3195 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3196 | } |
| 3197 | if (!has_on_target_error) { |
| 3198 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3199 | } |
| 3200 | if (!has_mode) { |
| 3201 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 3202 | } |
| 3203 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3204 | blk = blk_by_name(device); |
| 3205 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3206 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3207 | "Device '%s' not found", device); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3208 | return; |
| 3209 | } |
| 3210 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3211 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3212 | aio_context_acquire(aio_context); |
| 3213 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3214 | /* Although backup_run has this check too, we need to use bs->drv below, so |
| 3215 | * do an early check redundantly. */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3216 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3217 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3218 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3219 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3220 | bs = blk_bs(blk); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3221 | |
| 3222 | if (!has_format) { |
| 3223 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; |
| 3224 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3225 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3226 | /* Early check to avoid creating target */ |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 3227 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3228 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3229 | } |
| 3230 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3231 | flags = bs->open_flags | BDRV_O_RDWR; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3232 | |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3233 | /* See if we have a backing HD we can use to create our new image |
| 3234 | * on top of. */ |
| 3235 | if (sync == MIRROR_SYNC_MODE_TOP) { |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3236 | source = backing_bs(bs); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3237 | if (!source) { |
| 3238 | sync = MIRROR_SYNC_MODE_FULL; |
| 3239 | } |
| 3240 | } |
| 3241 | if (sync == MIRROR_SYNC_MODE_NONE) { |
| 3242 | source = bs; |
| 3243 | } |
| 3244 | |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3245 | size = bdrv_getlength(bs); |
| 3246 | if (size < 0) { |
| 3247 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3248 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3249 | } |
| 3250 | |
| 3251 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3252 | assert(format); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3253 | if (source) { |
| 3254 | bdrv_img_create(target, format, source->filename, |
| 3255 | source->drv->format_name, NULL, |
| 3256 | size, flags, &local_err, false); |
| 3257 | } else { |
| 3258 | bdrv_img_create(target, format, NULL, NULL, NULL, |
| 3259 | size, flags, &local_err, false); |
| 3260 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3261 | } |
| 3262 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3263 | if (local_err) { |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3264 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3265 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3266 | } |
| 3267 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3268 | if (format) { |
| 3269 | options = qdict_new(); |
| 3270 | qdict_put(options, "driver", qstring_from_str(format)); |
| 3271 | } |
| 3272 | |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 3273 | target_bs = NULL; |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 3274 | ret = bdrv_open(&target_bs, target, NULL, options, flags, &local_err); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3275 | if (ret < 0) { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 3276 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3277 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3278 | } |
| 3279 | |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3280 | bdrv_set_aio_context(target_bs, aio_context); |
| 3281 | |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3282 | if (has_bitmap) { |
| 3283 | bmap = bdrv_find_dirty_bitmap(bs, bitmap); |
| 3284 | if (!bmap) { |
| 3285 | error_setg(errp, "Bitmap '%s' could not be found", bitmap); |
Max Reitz | 0702d3d | 2015-11-09 23:39:10 +0100 | [diff] [blame] | 3286 | bdrv_unref(target_bs); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3287 | goto out; |
| 3288 | } |
| 3289 | } |
| 3290 | |
| 3291 | backup_start(bs, target_bs, speed, sync, bmap, |
| 3292 | on_source_error, on_target_error, |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3293 | block_job_cb, bs, txn, &local_err); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3294 | if (local_err != NULL) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 3295 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3296 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3297 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3298 | } |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3299 | |
| 3300 | out: |
| 3301 | aio_context_release(aio_context); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3302 | } |
| 3303 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3304 | void qmp_drive_backup(const char *device, const char *target, |
| 3305 | bool has_format, const char *format, |
| 3306 | enum MirrorSyncMode sync, |
| 3307 | bool has_mode, enum NewImageMode mode, |
| 3308 | bool has_speed, int64_t speed, |
| 3309 | bool has_bitmap, const char *bitmap, |
| 3310 | bool has_on_source_error, BlockdevOnError on_source_error, |
| 3311 | bool has_on_target_error, BlockdevOnError on_target_error, |
| 3312 | Error **errp) |
| 3313 | { |
| 3314 | return do_drive_backup(device, target, has_format, format, sync, |
| 3315 | has_mode, mode, has_speed, speed, |
| 3316 | has_bitmap, bitmap, |
| 3317 | has_on_source_error, on_source_error, |
| 3318 | has_on_target_error, on_target_error, |
| 3319 | NULL, errp); |
| 3320 | } |
| 3321 | |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3322 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
| 3323 | { |
Alberto Garcia | d5a8ee6 | 2015-04-17 14:52:43 +0300 | [diff] [blame] | 3324 | return bdrv_named_nodes_list(errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3325 | } |
| 3326 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3327 | void do_blockdev_backup(const char *device, const char *target, |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3328 | enum MirrorSyncMode sync, |
| 3329 | bool has_speed, int64_t speed, |
| 3330 | bool has_on_source_error, |
| 3331 | BlockdevOnError on_source_error, |
| 3332 | bool has_on_target_error, |
| 3333 | BlockdevOnError on_target_error, |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3334 | BlockJobTxn *txn, Error **errp) |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3335 | { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3336 | BlockBackend *blk, *target_blk; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3337 | BlockDriverState *bs; |
| 3338 | BlockDriverState *target_bs; |
| 3339 | Error *local_err = NULL; |
| 3340 | AioContext *aio_context; |
| 3341 | |
| 3342 | if (!has_speed) { |
| 3343 | speed = 0; |
| 3344 | } |
| 3345 | if (!has_on_source_error) { |
| 3346 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3347 | } |
| 3348 | if (!has_on_target_error) { |
| 3349 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3350 | } |
| 3351 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3352 | blk = blk_by_name(device); |
| 3353 | if (!blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 3354 | error_setg(errp, "Device '%s' not found", device); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3355 | return; |
| 3356 | } |
| 3357 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3358 | aio_context = blk_get_aio_context(blk); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3359 | aio_context_acquire(aio_context); |
| 3360 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3361 | if (!blk_is_available(blk)) { |
| 3362 | error_setg(errp, "Device '%s' has no medium", device); |
| 3363 | goto out; |
| 3364 | } |
| 3365 | bs = blk_bs(blk); |
| 3366 | |
| 3367 | target_blk = blk_by_name(target); |
| 3368 | if (!target_blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 3369 | error_setg(errp, "Device '%s' not found", target); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3370 | goto out; |
| 3371 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3372 | |
| 3373 | if (!blk_is_available(target_blk)) { |
| 3374 | error_setg(errp, "Device '%s' has no medium", target); |
| 3375 | goto out; |
| 3376 | } |
| 3377 | target_bs = blk_bs(target_blk); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3378 | |
| 3379 | bdrv_ref(target_bs); |
| 3380 | bdrv_set_aio_context(target_bs, aio_context); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3381 | backup_start(bs, target_bs, speed, sync, NULL, on_source_error, |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3382 | on_target_error, block_job_cb, bs, txn, &local_err); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3383 | if (local_err != NULL) { |
| 3384 | bdrv_unref(target_bs); |
| 3385 | error_propagate(errp, local_err); |
| 3386 | } |
| 3387 | out: |
| 3388 | aio_context_release(aio_context); |
| 3389 | } |
| 3390 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3391 | void qmp_blockdev_backup(const char *device, const char *target, |
| 3392 | enum MirrorSyncMode sync, |
| 3393 | bool has_speed, int64_t speed, |
| 3394 | bool has_on_source_error, |
| 3395 | BlockdevOnError on_source_error, |
| 3396 | bool has_on_target_error, |
| 3397 | BlockdevOnError on_target_error, |
| 3398 | Error **errp) |
| 3399 | { |
| 3400 | do_blockdev_backup(device, target, sync, has_speed, speed, |
| 3401 | has_on_source_error, on_source_error, |
| 3402 | has_on_target_error, on_target_error, |
| 3403 | NULL, errp); |
| 3404 | } |
| 3405 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3406 | /* Parameter check and block job starting for drive mirroring. |
| 3407 | * Caller should hold @device and @target's aio context (must be the same). |
| 3408 | **/ |
| 3409 | static void blockdev_mirror_common(BlockDriverState *bs, |
| 3410 | BlockDriverState *target, |
| 3411 | bool has_replaces, const char *replaces, |
| 3412 | enum MirrorSyncMode sync, |
| 3413 | bool has_speed, int64_t speed, |
| 3414 | bool has_granularity, uint32_t granularity, |
| 3415 | bool has_buf_size, int64_t buf_size, |
| 3416 | bool has_on_source_error, |
| 3417 | BlockdevOnError on_source_error, |
| 3418 | bool has_on_target_error, |
| 3419 | BlockdevOnError on_target_error, |
| 3420 | bool has_unmap, bool unmap, |
| 3421 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3422 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3423 | |
| 3424 | if (!has_speed) { |
| 3425 | speed = 0; |
| 3426 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3427 | if (!has_on_source_error) { |
| 3428 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3429 | } |
| 3430 | if (!has_on_target_error) { |
| 3431 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3432 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3433 | if (!has_granularity) { |
| 3434 | granularity = 0; |
| 3435 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3436 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 3437 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3438 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 3439 | if (!has_unmap) { |
| 3440 | unmap = true; |
| 3441 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3442 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3443 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3444 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3445 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3446 | return; |
| 3447 | } |
| 3448 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3449 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3450 | "power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3451 | return; |
| 3452 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3453 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3454 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3455 | return; |
| 3456 | } |
Fam Zheng | e40e502 | 2015-12-24 12:45:04 +0800 | [diff] [blame] | 3457 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
| 3458 | return; |
| 3459 | } |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3460 | if (target->blk) { |
| 3461 | error_setg(errp, "Cannot mirror to an attached block device"); |
| 3462 | return; |
| 3463 | } |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3464 | |
| 3465 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { |
| 3466 | sync = MIRROR_SYNC_MODE_FULL; |
| 3467 | } |
| 3468 | |
| 3469 | /* pass the node name to replace to mirror start since it's loose coupling |
| 3470 | * and will allow to check whether the node still exist at mirror completion |
| 3471 | */ |
| 3472 | mirror_start(bs, target, |
| 3473 | has_replaces ? replaces : NULL, |
| 3474 | speed, granularity, buf_size, sync, |
| 3475 | on_source_error, on_target_error, unmap, |
| 3476 | block_job_cb, bs, errp); |
| 3477 | } |
| 3478 | |
| 3479 | void qmp_drive_mirror(const char *device, const char *target, |
| 3480 | bool has_format, const char *format, |
| 3481 | bool has_node_name, const char *node_name, |
| 3482 | bool has_replaces, const char *replaces, |
| 3483 | enum MirrorSyncMode sync, |
| 3484 | bool has_mode, enum NewImageMode mode, |
| 3485 | bool has_speed, int64_t speed, |
| 3486 | bool has_granularity, uint32_t granularity, |
| 3487 | bool has_buf_size, int64_t buf_size, |
| 3488 | bool has_on_source_error, BlockdevOnError on_source_error, |
| 3489 | bool has_on_target_error, BlockdevOnError on_target_error, |
| 3490 | bool has_unmap, bool unmap, |
| 3491 | Error **errp) |
| 3492 | { |
| 3493 | BlockDriverState *bs; |
| 3494 | BlockBackend *blk; |
| 3495 | BlockDriverState *source, *target_bs; |
| 3496 | AioContext *aio_context; |
| 3497 | Error *local_err = NULL; |
| 3498 | QDict *options = NULL; |
| 3499 | int flags; |
| 3500 | int64_t size; |
| 3501 | int ret; |
| 3502 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3503 | blk = blk_by_name(device); |
| 3504 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3505 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3506 | "Device '%s' not found", device); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3507 | return; |
| 3508 | } |
| 3509 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3510 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3511 | aio_context_acquire(aio_context); |
| 3512 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3513 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3514 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3515 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3516 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3517 | bs = blk_bs(blk); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3518 | if (!has_mode) { |
| 3519 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 3520 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3521 | |
| 3522 | if (!has_format) { |
| 3523 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; |
| 3524 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3525 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3526 | flags = bs->open_flags | BDRV_O_RDWR; |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3527 | source = backing_bs(bs); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3528 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { |
| 3529 | sync = MIRROR_SYNC_MODE_FULL; |
| 3530 | } |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 3531 | if (sync == MIRROR_SYNC_MODE_NONE) { |
| 3532 | source = bs; |
| 3533 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3534 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3535 | size = bdrv_getlength(bs); |
| 3536 | if (size < 0) { |
| 3537 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3538 | goto out; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3539 | } |
| 3540 | |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3541 | if (has_replaces) { |
| 3542 | BlockDriverState *to_replace_bs; |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3543 | AioContext *replace_aio_context; |
| 3544 | int64_t replace_size; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3545 | |
| 3546 | if (!has_node_name) { |
| 3547 | error_setg(errp, "a node-name must be provided when replacing a" |
| 3548 | " named node of the graph"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3549 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3550 | } |
| 3551 | |
Wen Congyang | e12f378 | 2015-07-17 10:12:22 +0800 | [diff] [blame] | 3552 | to_replace_bs = check_to_replace_node(bs, replaces, &local_err); |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3553 | |
| 3554 | if (!to_replace_bs) { |
| 3555 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3556 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3557 | } |
| 3558 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3559 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
| 3560 | aio_context_acquire(replace_aio_context); |
| 3561 | replace_size = bdrv_getlength(to_replace_bs); |
| 3562 | aio_context_release(replace_aio_context); |
| 3563 | |
| 3564 | if (size != replace_size) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3565 | error_setg(errp, "cannot replace image with a mirror image of " |
| 3566 | "different size"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3567 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3568 | } |
| 3569 | } |
| 3570 | |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 3571 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
| 3572 | && mode != NEW_IMAGE_MODE_EXISTING) |
| 3573 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3574 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3575 | assert(format); |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3576 | bdrv_img_create(target, format, |
Miroslav Rezanina | f382d43 | 2013-02-13 09:09:40 +0100 | [diff] [blame] | 3577 | NULL, NULL, NULL, size, flags, &local_err, false); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3578 | } else { |
| 3579 | switch (mode) { |
| 3580 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3581 | break; |
| 3582 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 3583 | /* create new image with backing file */ |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3584 | bdrv_img_create(target, format, |
| 3585 | source->filename, |
| 3586 | source->drv->format_name, |
Miroslav Rezanina | f382d43 | 2013-02-13 09:09:40 +0100 | [diff] [blame] | 3587 | NULL, size, flags, &local_err, false); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3588 | break; |
| 3589 | default: |
| 3590 | abort(); |
| 3591 | } |
| 3592 | } |
| 3593 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3594 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3595 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3596 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3597 | } |
| 3598 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3599 | options = qdict_new(); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3600 | if (has_node_name) { |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3601 | qdict_put(options, "node-name", qstring_from_str(node_name)); |
| 3602 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3603 | if (format) { |
| 3604 | qdict_put(options, "driver", qstring_from_str(format)); |
| 3605 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3606 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3607 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3608 | * file. |
| 3609 | */ |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 3610 | target_bs = NULL; |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3611 | ret = bdrv_open(&target_bs, target, NULL, options, |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 3612 | flags | BDRV_O_NO_BACKING, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3613 | if (ret < 0) { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 3614 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3615 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3616 | } |
| 3617 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3618 | bdrv_set_aio_context(target_bs, aio_context); |
| 3619 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3620 | blockdev_mirror_common(bs, target_bs, |
| 3621 | has_replaces, replaces, sync, |
| 3622 | has_speed, speed, |
| 3623 | has_granularity, granularity, |
| 3624 | has_buf_size, buf_size, |
| 3625 | has_on_source_error, on_source_error, |
| 3626 | has_on_target_error, on_target_error, |
| 3627 | has_unmap, unmap, |
| 3628 | &local_err); |
| 3629 | if (local_err) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3630 | error_propagate(errp, local_err); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3631 | bdrv_unref(target_bs); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3632 | } |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3633 | out: |
| 3634 | aio_context_release(aio_context); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3635 | } |
| 3636 | |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3637 | void qmp_blockdev_mirror(const char *device, const char *target, |
| 3638 | bool has_replaces, const char *replaces, |
| 3639 | MirrorSyncMode sync, |
| 3640 | bool has_speed, int64_t speed, |
| 3641 | bool has_granularity, uint32_t granularity, |
| 3642 | bool has_buf_size, int64_t buf_size, |
| 3643 | bool has_on_source_error, |
| 3644 | BlockdevOnError on_source_error, |
| 3645 | bool has_on_target_error, |
| 3646 | BlockdevOnError on_target_error, |
| 3647 | Error **errp) |
| 3648 | { |
| 3649 | BlockDriverState *bs; |
| 3650 | BlockBackend *blk; |
| 3651 | BlockDriverState *target_bs; |
| 3652 | AioContext *aio_context; |
| 3653 | Error *local_err = NULL; |
| 3654 | |
| 3655 | blk = blk_by_name(device); |
| 3656 | if (!blk) { |
| 3657 | error_setg(errp, "Device '%s' not found", device); |
| 3658 | return; |
| 3659 | } |
| 3660 | bs = blk_bs(blk); |
| 3661 | |
| 3662 | if (!bs) { |
| 3663 | error_setg(errp, "Device '%s' has no media", device); |
| 3664 | return; |
| 3665 | } |
| 3666 | |
| 3667 | target_bs = bdrv_lookup_bs(target, target, errp); |
| 3668 | if (!target_bs) { |
| 3669 | return; |
| 3670 | } |
| 3671 | |
| 3672 | aio_context = bdrv_get_aio_context(bs); |
| 3673 | aio_context_acquire(aio_context); |
| 3674 | |
| 3675 | bdrv_ref(target_bs); |
| 3676 | bdrv_set_aio_context(target_bs, aio_context); |
| 3677 | |
| 3678 | blockdev_mirror_common(bs, target_bs, |
| 3679 | has_replaces, replaces, sync, |
| 3680 | has_speed, speed, |
| 3681 | has_granularity, granularity, |
| 3682 | has_buf_size, buf_size, |
| 3683 | has_on_source_error, on_source_error, |
| 3684 | has_on_target_error, on_target_error, |
| 3685 | true, true, |
| 3686 | &local_err); |
| 3687 | if (local_err) { |
| 3688 | error_propagate(errp, local_err); |
| 3689 | bdrv_unref(target_bs); |
| 3690 | } |
| 3691 | |
| 3692 | aio_context_release(aio_context); |
| 3693 | } |
| 3694 | |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3695 | /* Get the block job for a given device name and acquire its AioContext */ |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3696 | static BlockJob *find_block_job(const char *device, AioContext **aio_context, |
| 3697 | Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3698 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3699 | BlockBackend *blk; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3700 | BlockDriverState *bs; |
| 3701 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3702 | *aio_context = NULL; |
| 3703 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3704 | blk = blk_by_name(device); |
| 3705 | if (!blk) { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3706 | goto notfound; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3707 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3708 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3709 | *aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3710 | aio_context_acquire(*aio_context); |
| 3711 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3712 | if (!blk_is_available(blk)) { |
| 3713 | goto notfound; |
| 3714 | } |
| 3715 | bs = blk_bs(blk); |
| 3716 | |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3717 | if (!bs->job) { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3718 | goto notfound; |
| 3719 | } |
| 3720 | |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3721 | return bs->job; |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3722 | |
| 3723 | notfound: |
Markus Armbruster | 2e3a026 | 2015-01-29 10:36:59 +0100 | [diff] [blame] | 3724 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 3725 | "No active block job on device '%s'", device); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3726 | if (*aio_context) { |
| 3727 | aio_context_release(*aio_context); |
| 3728 | *aio_context = NULL; |
| 3729 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3730 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3731 | } |
| 3732 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3733 | 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] | 3734 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3735 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3736 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3737 | |
| 3738 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3739 | return; |
| 3740 | } |
| 3741 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3742 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3743 | aio_context_release(aio_context); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3744 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3745 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3746 | void qmp_block_job_cancel(const char *device, |
| 3747 | bool has_force, bool force, Error **errp) |
| 3748 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3749 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3750 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3751 | |
| 3752 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3753 | return; |
| 3754 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3755 | |
| 3756 | if (!has_force) { |
| 3757 | force = false; |
| 3758 | } |
| 3759 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3760 | if (job->user_paused && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 3761 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 3762 | device); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3763 | goto out; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3764 | } |
| 3765 | |
| 3766 | trace_qmp_block_job_cancel(job); |
| 3767 | block_job_cancel(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3768 | out: |
| 3769 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3770 | } |
| 3771 | |
| 3772 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3773 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3774 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3775 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3776 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3777 | if (!job || job->user_paused) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3778 | return; |
| 3779 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3780 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3781 | job->user_paused = true; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3782 | trace_qmp_block_job_pause(job); |
| 3783 | block_job_pause(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3784 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3785 | } |
| 3786 | |
| 3787 | void qmp_block_job_resume(const char *device, Error **errp) |
| 3788 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3789 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3790 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3791 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3792 | if (!job || !job->user_paused) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 3793 | return; |
| 3794 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3795 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3796 | job->user_paused = false; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3797 | trace_qmp_block_job_resume(job); |
| 3798 | block_job_resume(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3799 | aio_context_release(aio_context); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3800 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3801 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3802 | void qmp_block_job_complete(const char *device, Error **errp) |
| 3803 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3804 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3805 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3806 | |
| 3807 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3808 | return; |
| 3809 | } |
| 3810 | |
| 3811 | trace_qmp_block_job_complete(job); |
| 3812 | block_job_complete(job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3813 | aio_context_release(aio_context); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3814 | } |
| 3815 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3816 | void qmp_change_backing_file(const char *device, |
| 3817 | const char *image_node_name, |
| 3818 | const char *backing_file, |
| 3819 | Error **errp) |
| 3820 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3821 | BlockBackend *blk; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3822 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3823 | AioContext *aio_context; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3824 | BlockDriverState *image_bs = NULL; |
| 3825 | Error *local_err = NULL; |
| 3826 | bool ro; |
| 3827 | int open_flags; |
| 3828 | int ret; |
| 3829 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3830 | blk = blk_by_name(device); |
| 3831 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3832 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3833 | "Device '%s' not found", device); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3834 | return; |
| 3835 | } |
| 3836 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3837 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3838 | aio_context_acquire(aio_context); |
| 3839 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3840 | if (!blk_is_available(blk)) { |
| 3841 | error_setg(errp, "Device '%s' has no medium", device); |
| 3842 | goto out; |
| 3843 | } |
| 3844 | bs = blk_bs(blk); |
| 3845 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3846 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 3847 | if (local_err) { |
| 3848 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3849 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3850 | } |
| 3851 | |
| 3852 | if (!image_bs) { |
| 3853 | error_setg(errp, "image file not found"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3854 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3855 | } |
| 3856 | |
| 3857 | if (bdrv_find_base(image_bs) == image_bs) { |
| 3858 | error_setg(errp, "not allowing backing file change on an image " |
| 3859 | "without a backing file"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3860 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3861 | } |
| 3862 | |
| 3863 | /* even though we are not necessarily operating on bs, we need it to |
| 3864 | * determine if block ops are currently prohibited on the chain */ |
| 3865 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3866 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3867 | } |
| 3868 | |
| 3869 | /* final sanity check */ |
| 3870 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 3871 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 3872 | device); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3873 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3874 | } |
| 3875 | |
| 3876 | /* if not r/w, reopen to make r/w */ |
| 3877 | open_flags = image_bs->open_flags; |
| 3878 | ro = bdrv_is_read_only(image_bs); |
| 3879 | |
| 3880 | if (ro) { |
| 3881 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); |
| 3882 | if (local_err) { |
| 3883 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3884 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3885 | } |
| 3886 | } |
| 3887 | |
| 3888 | ret = bdrv_change_backing_file(image_bs, backing_file, |
| 3889 | image_bs->drv ? image_bs->drv->format_name : ""); |
| 3890 | |
| 3891 | if (ret < 0) { |
| 3892 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 3893 | backing_file); |
| 3894 | /* don't exit here, so we can try to restore open flags if |
| 3895 | * appropriate */ |
| 3896 | } |
| 3897 | |
| 3898 | if (ro) { |
| 3899 | bdrv_reopen(image_bs, open_flags, &local_err); |
| 3900 | if (local_err) { |
| 3901 | error_propagate(errp, local_err); /* will preserve prior errp */ |
| 3902 | } |
| 3903 | } |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3904 | |
| 3905 | out: |
| 3906 | aio_context_release(aio_context); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3907 | } |
| 3908 | |
Kevin Wolf | abb21ac3 | 2016-02-23 17:33:24 +0100 | [diff] [blame] | 3909 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
| 3910 | { |
| 3911 | QemuOpts *opts; |
| 3912 | QDict *qdict; |
| 3913 | Error *local_err = NULL; |
| 3914 | |
| 3915 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); |
| 3916 | if (!opts) { |
| 3917 | return; |
| 3918 | } |
| 3919 | |
| 3920 | qdict = qemu_opts_to_qdict(opts, NULL); |
| 3921 | |
| 3922 | if (!qdict_get_try_str(qdict, "node-name")) { |
Kevin Wolf | f8746fb | 2016-03-16 11:14:31 +0100 | [diff] [blame] | 3923 | QDECREF(qdict); |
Kevin Wolf | abb21ac3 | 2016-02-23 17:33:24 +0100 | [diff] [blame] | 3924 | error_report("'node-name' needs to be specified"); |
| 3925 | goto out; |
| 3926 | } |
| 3927 | |
| 3928 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); |
| 3929 | if (!bs) { |
| 3930 | error_report_err(local_err); |
| 3931 | goto out; |
| 3932 | } |
| 3933 | |
| 3934 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 3935 | |
| 3936 | out: |
| 3937 | qemu_opts_del(opts); |
| 3938 | } |
| 3939 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3940 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 3941 | { |
| 3942 | QmpOutputVisitor *ov = qmp_output_visitor_new(); |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3943 | BlockDriverState *bs; |
| 3944 | BlockBackend *blk = NULL; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3945 | QObject *obj; |
| 3946 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3947 | Error *local_err = NULL; |
| 3948 | |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 3949 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3950 | * cache.direct=false instead of silently switching to aio=threads, except |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 3951 | * when called from drive_new(). |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3952 | * |
| 3953 | * For now, simply forbidding the combination for all drivers will do. */ |
| 3954 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { |
Kevin Wolf | c6e0bd9 | 2014-03-06 15:47:32 +0100 | [diff] [blame] | 3955 | bool direct = options->has_cache && |
| 3956 | options->cache->has_direct && |
| 3957 | options->cache->direct; |
| 3958 | if (!direct) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3959 | error_setg(errp, "aio=native requires cache.direct=true"); |
| 3960 | goto fail; |
| 3961 | } |
| 3962 | } |
| 3963 | |
Eric Blake | 51e72bc | 2016-01-29 06:48:54 -0700 | [diff] [blame] | 3964 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), NULL, &options, |
| 3965 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3966 | if (local_err) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3967 | error_propagate(errp, local_err); |
| 3968 | goto fail; |
| 3969 | } |
| 3970 | |
| 3971 | obj = qmp_output_get_qobject(ov); |
| 3972 | qdict = qobject_to_qdict(obj); |
| 3973 | |
| 3974 | qdict_flatten(qdict); |
| 3975 | |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3976 | if (options->has_id) { |
| 3977 | blk = blockdev_init(NULL, qdict, &local_err); |
| 3978 | if (local_err) { |
| 3979 | error_propagate(errp, local_err); |
| 3980 | goto fail; |
| 3981 | } |
| 3982 | |
| 3983 | bs = blk_bs(blk); |
| 3984 | } else { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3985 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 3986 | error_setg(errp, "'id' and/or 'node-name' need to be specified for " |
| 3987 | "the root node"); |
| 3988 | goto fail; |
| 3989 | } |
| 3990 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 3991 | bs = bds_tree_init(qdict, errp); |
| 3992 | if (!bs) { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3993 | goto fail; |
| 3994 | } |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 3995 | |
| 3996 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3997 | } |
| 3998 | |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3999 | if (bs && bdrv_key_required(bs)) { |
| 4000 | if (blk) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 4001 | monitor_remove_blk(blk); |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 4002 | blk_unref(blk); |
| 4003 | } else { |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 4004 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 4005 | bdrv_unref(bs); |
| 4006 | } |
Kevin Wolf | 8ae8e90 | 2014-03-06 15:43:42 +0100 | [diff] [blame] | 4007 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
| 4008 | goto fail; |
| 4009 | } |
| 4010 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4011 | fail: |
| 4012 | qmp_output_visitor_cleanup(ov); |
| 4013 | } |
| 4014 | |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4015 | void qmp_x_blockdev_del(bool has_id, const char *id, |
| 4016 | bool has_node_name, const char *node_name, Error **errp) |
| 4017 | { |
| 4018 | AioContext *aio_context; |
| 4019 | BlockBackend *blk; |
| 4020 | BlockDriverState *bs; |
| 4021 | |
| 4022 | if (has_id && has_node_name) { |
| 4023 | error_setg(errp, "Only one of id and node-name must be specified"); |
| 4024 | return; |
| 4025 | } else if (!has_id && !has_node_name) { |
| 4026 | error_setg(errp, "No block device specified"); |
| 4027 | return; |
| 4028 | } |
| 4029 | |
| 4030 | if (has_id) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 4031 | /* blk_by_name() never returns a BB that is not owned by the monitor */ |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4032 | blk = blk_by_name(id); |
| 4033 | if (!blk) { |
| 4034 | error_setg(errp, "Cannot find block backend %s", id); |
| 4035 | return; |
| 4036 | } |
Paolo Bonzini | 5cf87fd | 2016-03-31 15:07:43 +0200 | [diff] [blame] | 4037 | if (blk_legacy_dinfo(blk)) { |
| 4038 | error_setg(errp, "Deleting block backend added with drive-add" |
| 4039 | " is not supported"); |
| 4040 | return; |
| 4041 | } |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4042 | if (blk_get_refcnt(blk) > 1) { |
| 4043 | error_setg(errp, "Block backend %s is in use", id); |
| 4044 | return; |
| 4045 | } |
| 4046 | bs = blk_bs(blk); |
| 4047 | aio_context = blk_get_aio_context(blk); |
| 4048 | } else { |
| 4049 | bs = bdrv_find_node(node_name); |
| 4050 | if (!bs) { |
| 4051 | error_setg(errp, "Cannot find node %s", node_name); |
| 4052 | return; |
| 4053 | } |
| 4054 | blk = bs->blk; |
| 4055 | if (blk) { |
| 4056 | error_setg(errp, "Node %s is in use by %s", |
| 4057 | node_name, blk_name(blk)); |
| 4058 | return; |
| 4059 | } |
| 4060 | aio_context = bdrv_get_aio_context(bs); |
| 4061 | } |
| 4062 | |
| 4063 | aio_context_acquire(aio_context); |
| 4064 | |
| 4065 | if (bs) { |
| 4066 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
| 4067 | goto out; |
| 4068 | } |
| 4069 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 4070 | if (!blk && !bs->monitor_list.tqe_prev) { |
| 4071 | error_setg(errp, "Node %s is not owned by the monitor", |
| 4072 | bs->node_name); |
| 4073 | goto out; |
| 4074 | } |
| 4075 | |
| 4076 | if (bs->refcnt > 1) { |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4077 | error_setg(errp, "Block device %s is in use", |
| 4078 | bdrv_get_device_or_node_name(bs)); |
| 4079 | goto out; |
| 4080 | } |
| 4081 | } |
| 4082 | |
| 4083 | if (blk) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 4084 | monitor_remove_blk(blk); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4085 | blk_unref(blk); |
| 4086 | } else { |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 4087 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4088 | bdrv_unref(bs); |
| 4089 | } |
| 4090 | |
| 4091 | out: |
| 4092 | aio_context_release(aio_context); |
| 4093 | } |
| 4094 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4095 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 4096 | { |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4097 | BlockJobInfoList *head = NULL, **p_next = &head; |
| 4098 | BlockDriverState *bs; |
| 4099 | |
| 4100 | for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) { |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4101 | AioContext *aio_context = bdrv_get_aio_context(bs); |
| 4102 | |
| 4103 | aio_context_acquire(aio_context); |
| 4104 | |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4105 | if (bs->job) { |
| 4106 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
| 4107 | elem->value = block_job_query(bs->job); |
| 4108 | *p_next = elem; |
| 4109 | p_next = &elem->next; |
| 4110 | } |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4111 | |
| 4112 | aio_context_release(aio_context); |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4113 | } |
| 4114 | |
| 4115 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4116 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4117 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4118 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4119 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4120 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4121 | .desc = { |
| 4122 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4123 | .name = "snapshot", |
| 4124 | .type = QEMU_OPT_BOOL, |
| 4125 | .help = "enable/disable snapshot mode", |
| 4126 | },{ |
Paolo Bonzini | a9384af | 2013-02-08 14:06:12 +0100 | [diff] [blame] | 4127 | .name = "discard", |
| 4128 | .type = QEMU_OPT_STRING, |
| 4129 | .help = "discard operation (ignore/off, unmap/on)", |
| 4130 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4131 | .name = "aio", |
| 4132 | .type = QEMU_OPT_STRING, |
| 4133 | .help = "host AIO implementation (threads, native)", |
| 4134 | },{ |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 4135 | .name = BDRV_OPT_CACHE_WB, |
| 4136 | .type = QEMU_OPT_BOOL, |
| 4137 | .help = "Enable writeback mode", |
| 4138 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4139 | .name = "format", |
| 4140 | .type = QEMU_OPT_STRING, |
| 4141 | .help = "disk format (raw, qcow2, ...)", |
| 4142 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4143 | .name = "rerror", |
| 4144 | .type = QEMU_OPT_STRING, |
| 4145 | .help = "read error action", |
| 4146 | },{ |
| 4147 | .name = "werror", |
| 4148 | .type = QEMU_OPT_STRING, |
| 4149 | .help = "write error action", |
| 4150 | },{ |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 4151 | .name = "read-only", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4152 | .type = QEMU_OPT_BOOL, |
| 4153 | .help = "open drive file as read-only", |
| 4154 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4155 | .name = "throttling.iops-total", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4156 | .type = QEMU_OPT_NUMBER, |
| 4157 | .help = "limit total I/O operations per second", |
| 4158 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4159 | .name = "throttling.iops-read", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4160 | .type = QEMU_OPT_NUMBER, |
| 4161 | .help = "limit read operations per second", |
| 4162 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4163 | .name = "throttling.iops-write", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4164 | .type = QEMU_OPT_NUMBER, |
| 4165 | .help = "limit write operations per second", |
| 4166 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4167 | .name = "throttling.bps-total", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4168 | .type = QEMU_OPT_NUMBER, |
| 4169 | .help = "limit total bytes per second", |
| 4170 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4171 | .name = "throttling.bps-read", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4172 | .type = QEMU_OPT_NUMBER, |
| 4173 | .help = "limit read bytes per second", |
| 4174 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4175 | .name = "throttling.bps-write", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4176 | .type = QEMU_OPT_NUMBER, |
| 4177 | .help = "limit write bytes per second", |
| 4178 | },{ |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 4179 | .name = "throttling.iops-total-max", |
| 4180 | .type = QEMU_OPT_NUMBER, |
| 4181 | .help = "I/O operations burst", |
| 4182 | },{ |
| 4183 | .name = "throttling.iops-read-max", |
| 4184 | .type = QEMU_OPT_NUMBER, |
| 4185 | .help = "I/O operations read burst", |
| 4186 | },{ |
| 4187 | .name = "throttling.iops-write-max", |
| 4188 | .type = QEMU_OPT_NUMBER, |
| 4189 | .help = "I/O operations write burst", |
| 4190 | },{ |
| 4191 | .name = "throttling.bps-total-max", |
| 4192 | .type = QEMU_OPT_NUMBER, |
| 4193 | .help = "total bytes burst", |
| 4194 | },{ |
| 4195 | .name = "throttling.bps-read-max", |
| 4196 | .type = QEMU_OPT_NUMBER, |
| 4197 | .help = "total bytes read burst", |
| 4198 | },{ |
| 4199 | .name = "throttling.bps-write-max", |
| 4200 | .type = QEMU_OPT_NUMBER, |
| 4201 | .help = "total bytes write burst", |
| 4202 | },{ |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 4203 | .name = "throttling.iops-total-max-length", |
| 4204 | .type = QEMU_OPT_NUMBER, |
| 4205 | .help = "length of the iops-total-max burst period, in seconds", |
| 4206 | },{ |
| 4207 | .name = "throttling.iops-read-max-length", |
| 4208 | .type = QEMU_OPT_NUMBER, |
| 4209 | .help = "length of the iops-read-max burst period, in seconds", |
| 4210 | },{ |
| 4211 | .name = "throttling.iops-write-max-length", |
| 4212 | .type = QEMU_OPT_NUMBER, |
| 4213 | .help = "length of the iops-write-max burst period, in seconds", |
| 4214 | },{ |
| 4215 | .name = "throttling.bps-total-max-length", |
| 4216 | .type = QEMU_OPT_NUMBER, |
| 4217 | .help = "length of the bps-total-max burst period, in seconds", |
| 4218 | },{ |
| 4219 | .name = "throttling.bps-read-max-length", |
| 4220 | .type = QEMU_OPT_NUMBER, |
| 4221 | .help = "length of the bps-read-max burst period, in seconds", |
| 4222 | },{ |
| 4223 | .name = "throttling.bps-write-max-length", |
| 4224 | .type = QEMU_OPT_NUMBER, |
| 4225 | .help = "length of the bps-write-max burst period, in seconds", |
| 4226 | },{ |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 4227 | .name = "throttling.iops-size", |
| 4228 | .type = QEMU_OPT_NUMBER, |
| 4229 | .help = "when limiting by iops max size of an I/O in bytes", |
| 4230 | },{ |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 4231 | .name = "throttling.group", |
| 4232 | .type = QEMU_OPT_STRING, |
| 4233 | .help = "name of the block throttling group", |
| 4234 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4235 | .name = "copy-on-read", |
| 4236 | .type = QEMU_OPT_BOOL, |
| 4237 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 4238 | },{ |
| 4239 | .name = "detect-zeroes", |
| 4240 | .type = QEMU_OPT_STRING, |
| 4241 | .help = "try to optimize zero writes (off, on, unmap)", |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 4242 | },{ |
| 4243 | .name = "stats-account-invalid", |
| 4244 | .type = QEMU_OPT_BOOL, |
| 4245 | .help = "whether to account for invalid I/O operations " |
| 4246 | "in the statistics", |
| 4247 | },{ |
| 4248 | .name = "stats-account-failed", |
| 4249 | .type = QEMU_OPT_BOOL, |
| 4250 | .help = "whether to account for failed I/O operations " |
| 4251 | "in the statistics", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4252 | }, |
| 4253 | { /* end of list */ } |
| 4254 | }, |
| 4255 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4256 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 4257 | static QemuOptsList qemu_root_bds_opts = { |
| 4258 | .name = "root-bds", |
Kevin Wolf | 23f7fcb | 2016-03-15 14:43:14 +0100 | [diff] [blame] | 4259 | .head = QTAILQ_HEAD_INITIALIZER(qemu_root_bds_opts.head), |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 4260 | .desc = { |
| 4261 | { |
| 4262 | .name = "discard", |
| 4263 | .type = QEMU_OPT_STRING, |
| 4264 | .help = "discard operation (ignore/off, unmap/on)", |
| 4265 | },{ |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 4266 | .name = "aio", |
| 4267 | .type = QEMU_OPT_STRING, |
| 4268 | .help = "host AIO implementation (threads, native)", |
| 4269 | },{ |
| 4270 | .name = "read-only", |
| 4271 | .type = QEMU_OPT_BOOL, |
| 4272 | .help = "open drive file as read-only", |
| 4273 | },{ |
| 4274 | .name = "copy-on-read", |
| 4275 | .type = QEMU_OPT_BOOL, |
| 4276 | .help = "copy read data from backing file into image file", |
| 4277 | },{ |
| 4278 | .name = "detect-zeroes", |
| 4279 | .type = QEMU_OPT_STRING, |
| 4280 | .help = "try to optimize zero writes (off, on, unmap)", |
| 4281 | }, |
| 4282 | { /* end of list */ } |
| 4283 | }, |
| 4284 | }; |
| 4285 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4286 | QemuOptsList qemu_drive_opts = { |
| 4287 | .name = "drive", |
| 4288 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 4289 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 4290 | /* |
| 4291 | * no elements => accept any params |
| 4292 | * validation will happen later |
| 4293 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4294 | { /* end of list */ } |
| 4295 | }, |
| 4296 | }; |