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" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 53 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 54 | static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
| 55 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); |
| 56 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 57 | static const char *const if_name[IF_COUNT] = { |
| 58 | [IF_NONE] = "none", |
| 59 | [IF_IDE] = "ide", |
| 60 | [IF_SCSI] = "scsi", |
| 61 | [IF_FLOPPY] = "floppy", |
| 62 | [IF_PFLASH] = "pflash", |
| 63 | [IF_MTD] = "mtd", |
| 64 | [IF_SD] = "sd", |
| 65 | [IF_VIRTIO] = "virtio", |
| 66 | [IF_XEN] = "xen", |
| 67 | }; |
| 68 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 69 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 70 | /* |
| 71 | * Do not change these numbers! They govern how drive option |
| 72 | * index maps to unit and bus. That mapping is ABI. |
| 73 | * |
| 74 | * All controllers used to imlement if=T drives need to support |
| 75 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 76 | * Otherwise, some index values map to "impossible" bus, unit |
| 77 | * values. |
| 78 | * |
| 79 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 80 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 81 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 82 | * the drive can't be set up. Regression. |
| 83 | */ |
| 84 | [IF_IDE] = 2, |
| 85 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 86 | }; |
| 87 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 88 | /** |
| 89 | * Boards may call this to offer board-by-board overrides |
| 90 | * of the default, global values. |
| 91 | */ |
| 92 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 93 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 94 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 95 | DriveInfo *dinfo; |
| 96 | |
| 97 | if (max_devs <= 0) { |
| 98 | return; |
| 99 | } |
| 100 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 101 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 102 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 103 | if (dinfo->type == type) { |
| 104 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 105 | " the %s interface, because a drive of that type has" |
| 106 | " already been added.\n", if_name[type]); |
| 107 | g_assert_not_reached(); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | if_max_devs[type] = max_devs; |
| 112 | } |
| 113 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 114 | /* |
| 115 | * We automatically delete the drive when a device using it gets |
| 116 | * unplugged. Questionable feature, but we can't just drop it. |
| 117 | * Device models call blockdev_mark_auto_del() to schedule the |
| 118 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 119 | * when deletion is actually safe. |
| 120 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 121 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 122 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 123 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 124 | BlockDriverState *bs = blk_bs(blk); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 125 | AioContext *aio_context; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 126 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 127 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 128 | return; |
| 129 | } |
| 130 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 131 | if (bs) { |
| 132 | aio_context = bdrv_get_aio_context(bs); |
| 133 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 134 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 135 | if (bs->job) { |
| 136 | block_job_cancel(bs->job); |
| 137 | } |
| 138 | |
| 139 | aio_context_release(aio_context); |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 140 | } |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 141 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 142 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 143 | } |
| 144 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 145 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 146 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 147 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 148 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 149 | if (dinfo && dinfo->auto_del) { |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 150 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 151 | } |
| 152 | } |
| 153 | |
John Snow | d8f94e1 | 2014-10-01 14:19:27 -0400 | [diff] [blame] | 154 | /** |
| 155 | * Returns the current mapping of how many units per bus |
| 156 | * a particular interface can support. |
| 157 | * |
| 158 | * A positive integer indicates n units per bus. |
| 159 | * 0 implies the mapping has not been established. |
| 160 | * -1 indicates an invalid BlockInterfaceType was given. |
| 161 | */ |
| 162 | int drive_get_max_devs(BlockInterfaceType type) |
| 163 | { |
| 164 | if (type >= IF_IDE && type < IF_COUNT) { |
| 165 | return if_max_devs[type]; |
| 166 | } |
| 167 | |
| 168 | return -1; |
| 169 | } |
| 170 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 171 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 172 | { |
| 173 | int max_devs = if_max_devs[type]; |
| 174 | return max_devs ? index / max_devs : 0; |
| 175 | } |
| 176 | |
| 177 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 178 | { |
| 179 | int max_devs = if_max_devs[type]; |
| 180 | return max_devs ? index % max_devs : index; |
| 181 | } |
| 182 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 183 | QemuOpts *drive_def(const char *optstr) |
| 184 | { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 185 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 189 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 190 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 191 | QemuOpts *opts; |
| 192 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 193 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 194 | if (!opts) { |
| 195 | return NULL; |
| 196 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 197 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 198 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 199 | } |
| 200 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 201 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 202 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 203 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 204 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 205 | return opts; |
| 206 | } |
| 207 | |
| 208 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 209 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 210 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 211 | DriveInfo *dinfo; |
| 212 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 213 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 214 | dinfo = blk_legacy_dinfo(blk); |
| 215 | if (dinfo && dinfo->type == type |
| 216 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 217 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 218 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | return NULL; |
| 222 | } |
| 223 | |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 224 | bool drive_check_orphaned(void) |
| 225 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 226 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 227 | DriveInfo *dinfo; |
| 228 | bool rs = false; |
| 229 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 230 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 231 | dinfo = blk_legacy_dinfo(blk); |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 232 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ |
| 233 | /* Unless this is a default drive, this may be an oversight. */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 234 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 235 | dinfo->type != IF_NONE) { |
| 236 | fprintf(stderr, "Warning: Orphaned drive without device: " |
| 237 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 238 | blk_name(blk), blk_bs(blk) ? blk_bs(blk)->filename : "", |
| 239 | if_name[dinfo->type], dinfo->bus, dinfo->unit); |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 240 | rs = true; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | return rs; |
| 245 | } |
| 246 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 247 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 248 | { |
| 249 | return drive_get(type, |
| 250 | drive_index_to_bus_id(type, index), |
| 251 | drive_index_to_unit_id(type, index)); |
| 252 | } |
| 253 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 254 | int drive_get_max_bus(BlockInterfaceType type) |
| 255 | { |
| 256 | int max_bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 257 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 258 | DriveInfo *dinfo; |
| 259 | |
| 260 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 261 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 262 | dinfo = blk_legacy_dinfo(blk); |
| 263 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 264 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 265 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 266 | } |
| 267 | return max_bus; |
| 268 | } |
| 269 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 270 | /* Get a block device. This should only be used for single-drive devices |
| 271 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 272 | appropriate bus. */ |
| 273 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 274 | { |
| 275 | static int next_block_unit[IF_COUNT]; |
| 276 | |
| 277 | return drive_get(type, 0, next_block_unit[type]++); |
| 278 | } |
| 279 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 280 | static void bdrv_format_print(void *opaque, const char *name) |
| 281 | { |
Markus Armbruster | 807105a | 2011-01-17 19:31:27 +0100 | [diff] [blame] | 282 | error_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 283 | } |
| 284 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 285 | typedef struct { |
| 286 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 287 | BlockDriverState *bs; |
| 288 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 289 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 290 | 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] | 291 | { |
| 292 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 293 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 294 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 295 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 296 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 297 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 298 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 299 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 300 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 301 | error_setg(errp, "'%s' invalid %s error action", |
| 302 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 303 | return -1; |
| 304 | } |
| 305 | } |
| 306 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 307 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
| 308 | Error **errp) |
| 309 | { |
| 310 | const QListEntry *entry; |
| 311 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { |
| 312 | switch (qobject_type(entry->value)) { |
| 313 | |
| 314 | case QTYPE_QSTRING: { |
| 315 | unsigned long long length; |
| 316 | const char *str = qstring_get_str(qobject_to_qstring(entry->value)); |
| 317 | if (parse_uint_full(str, &length, 10) == 0 && |
| 318 | length > 0 && length <= UINT_MAX) { |
| 319 | block_acct_add_interval(stats, (unsigned) length); |
| 320 | } else { |
| 321 | error_setg(errp, "Invalid interval length: %s", str); |
| 322 | return false; |
| 323 | } |
| 324 | break; |
| 325 | } |
| 326 | |
| 327 | case QTYPE_QINT: { |
| 328 | int64_t length = qint_get_int(qobject_to_qint(entry->value)); |
| 329 | if (length > 0 && length <= UINT_MAX) { |
| 330 | block_acct_add_interval(stats, (unsigned) length); |
| 331 | } else { |
| 332 | error_setg(errp, "Invalid interval length: %" PRId64, length); |
| 333 | return false; |
| 334 | } |
| 335 | break; |
| 336 | } |
| 337 | |
| 338 | default: |
| 339 | error_setg(errp, "The specification of stats-intervals is invalid"); |
| 340 | return false; |
| 341 | } |
| 342 | } |
| 343 | return true; |
| 344 | } |
| 345 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 346 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 347 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 348 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 349 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 350 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 351 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 352 | { |
| 353 | const char *discard; |
| 354 | Error *local_error = NULL; |
| 355 | const char *aio; |
| 356 | |
| 357 | if (bdrv_flags) { |
| 358 | if (!qemu_opt_get_bool(opts, "read-only", false)) { |
| 359 | *bdrv_flags |= BDRV_O_RDWR; |
| 360 | } |
| 361 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 362 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 363 | } |
| 364 | |
| 365 | if ((discard = qemu_opt_get(opts, "discard")) != NULL) { |
| 366 | if (bdrv_parse_discard_flags(discard, bdrv_flags) != 0) { |
| 367 | error_setg(errp, "Invalid discard option"); |
| 368 | return; |
| 369 | } |
| 370 | } |
| 371 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 372 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
| 373 | if (!strcmp(aio, "native")) { |
| 374 | *bdrv_flags |= BDRV_O_NATIVE_AIO; |
| 375 | } else if (!strcmp(aio, "threads")) { |
| 376 | /* this is the default */ |
| 377 | } else { |
| 378 | error_setg(errp, "invalid aio option"); |
| 379 | return; |
| 380 | } |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | /* disk I/O throttling */ |
| 385 | if (throttling_group) { |
| 386 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 387 | } |
| 388 | |
| 389 | if (throttle_cfg) { |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 390 | throttle_config_init(throttle_cfg); |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 391 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 392 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 393 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 394 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 395 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 396 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 397 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 398 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 399 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 400 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 401 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 402 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 403 | |
| 404 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 405 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 406 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 407 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 408 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 409 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 410 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 411 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 412 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 413 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 414 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 415 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 416 | |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 417 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
| 418 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); |
| 419 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = |
| 420 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); |
| 421 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = |
| 422 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); |
| 423 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = |
| 424 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); |
| 425 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = |
| 426 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); |
| 427 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = |
| 428 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); |
| 429 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 430 | throttle_cfg->op_size = |
| 431 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 432 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 433 | if (!throttle_is_valid(throttle_cfg, errp)) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 434 | return; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | if (detect_zeroes) { |
| 439 | *detect_zeroes = |
| 440 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, |
| 441 | qemu_opt_get(opts, "detect-zeroes"), |
Eric Blake | 7fb1cf160 | 2015-11-18 01:52:57 -0700 | [diff] [blame] | 442 | BLOCKDEV_DETECT_ZEROES_OPTIONS__MAX, |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 443 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 444 | &local_error); |
| 445 | if (local_error) { |
| 446 | error_propagate(errp, local_error); |
| 447 | return; |
| 448 | } |
| 449 | |
| 450 | if (bdrv_flags && |
| 451 | *detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && |
| 452 | !(*bdrv_flags & BDRV_O_UNMAP)) |
| 453 | { |
| 454 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " |
| 455 | "without setting discard operation to unmap"); |
| 456 | return; |
| 457 | } |
| 458 | } |
| 459 | } |
| 460 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 461 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 462 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 463 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 464 | { |
| 465 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 466 | int bdrv_flags = 0; |
| 467 | int on_read_error, on_write_error; |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 468 | bool account_invalid, account_failed; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 469 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 470 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 471 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 472 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 473 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 474 | QemuOpts *opts; |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 475 | QDict *interval_dict = NULL; |
| 476 | QList *interval_list = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 477 | const char *id; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 478 | BlockdevDetectZeroesOptions detect_zeroes = |
| 479 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
| 480 | const char *throttling_group = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 481 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 482 | /* Check common options by copying from bs_opts to opts, all other options |
| 483 | * stay in bs_opts for processing by bdrv_open(). */ |
| 484 | id = qdict_get_try_str(bs_opts, "id"); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 485 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 486 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 487 | error_propagate(errp, error); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 488 | goto err_no_opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 489 | } |
| 490 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 491 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 492 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 493 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 494 | goto early_err; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 495 | } |
| 496 | |
| 497 | if (id) { |
| 498 | qdict_del(bs_opts, "id"); |
| 499 | } |
| 500 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 501 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 502 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 503 | |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 504 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
| 505 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); |
| 506 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 507 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
| 508 | qdict_array_split(interval_dict, &interval_list); |
| 509 | |
| 510 | if (qdict_size(interval_dict) != 0) { |
| 511 | error_setg(errp, "Invalid option stats-intervals.%s", |
| 512 | qdict_first(interval_dict)->key); |
| 513 | goto early_err; |
| 514 | } |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 515 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 516 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 517 | &detect_zeroes, &error); |
| 518 | if (error) { |
| 519 | error_propagate(errp, error); |
| 520 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 521 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 522 | |
| 523 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 524 | if (is_help_option(buf)) { |
| 525 | error_printf("Supported formats:"); |
| 526 | bdrv_iterate_format(bdrv_format_print, NULL); |
| 527 | error_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 528 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 529 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 530 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 531 | if (qdict_haskey(bs_opts, "driver")) { |
| 532 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 533 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 534 | } |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 535 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 536 | } |
| 537 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 538 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 539 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 540 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 541 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 542 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 543 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 544 | } |
| 545 | } |
| 546 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 547 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 548 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 549 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 550 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 551 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 552 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 553 | } |
| 554 | } |
| 555 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 556 | if (snapshot) { |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 557 | bdrv_flags |= BDRV_O_SNAPSHOT; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 558 | } |
| 559 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 560 | /* init */ |
Kevin Wolf | 39c4ae9 | 2015-11-13 14:45:42 +0100 | [diff] [blame] | 561 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 562 | BlockBackendRootState *blk_rs; |
| 563 | |
| 564 | blk = blk_new(qemu_opts_id(opts), errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 565 | if (!blk) { |
| 566 | goto early_err; |
| 567 | } |
| 568 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 569 | blk_rs = blk_get_root_state(blk); |
| 570 | blk_rs->open_flags = bdrv_flags; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 571 | blk_rs->read_only = !(bdrv_flags & BDRV_O_RDWR); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 572 | blk_rs->detect_zeroes = detect_zeroes; |
| 573 | |
| 574 | if (throttle_enabled(&cfg)) { |
| 575 | if (!throttling_group) { |
| 576 | throttling_group = blk_name(blk); |
| 577 | } |
| 578 | blk_rs->throttle_group = g_strdup(throttling_group); |
| 579 | blk_rs->throttle_state = throttle_group_incref(throttling_group); |
| 580 | blk_rs->throttle_state->cfg = cfg; |
| 581 | } |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 582 | |
| 583 | QDECREF(bs_opts); |
| 584 | } else { |
| 585 | if (file && !*file) { |
| 586 | file = NULL; |
| 587 | } |
| 588 | |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 589 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 590 | * with other callers) rather than what we want as the real defaults. |
| 591 | * Apply the defaults here instead. */ |
| 592 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_WB, "on"); |
| 593 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 594 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
| 595 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 596 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 597 | bdrv_flags |= BDRV_O_INACTIVE; |
| 598 | } |
| 599 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 600 | blk = blk_new_open(qemu_opts_id(opts), file, NULL, bs_opts, bdrv_flags, |
| 601 | errp); |
| 602 | if (!blk) { |
| 603 | goto err_no_bs_opts; |
| 604 | } |
| 605 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 606 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 607 | bs->detect_zeroes = detect_zeroes; |
| 608 | |
| 609 | /* disk I/O throttling */ |
| 610 | if (throttle_enabled(&cfg)) { |
| 611 | if (!throttling_group) { |
| 612 | throttling_group = blk_name(blk); |
| 613 | } |
| 614 | bdrv_io_limits_enable(bs, throttling_group); |
| 615 | bdrv_set_io_limits(bs, &cfg); |
| 616 | } |
| 617 | |
| 618 | if (bdrv_key_required(bs)) { |
| 619 | autostart = 0; |
| 620 | } |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 621 | |
| 622 | block_acct_init(blk_get_stats(blk), account_invalid, account_failed); |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 623 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 624 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
| 625 | blk_unref(blk); |
| 626 | blk = NULL; |
| 627 | goto err_no_bs_opts; |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 628 | } |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 629 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 630 | |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 631 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 632 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 633 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 634 | qemu_opts_del(opts); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 635 | QDECREF(interval_dict); |
| 636 | QDECREF(interval_list); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 637 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 638 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 639 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 640 | qemu_opts_del(opts); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 641 | QDECREF(interval_dict); |
| 642 | QDECREF(interval_list); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 643 | err_no_opts: |
| 644 | QDECREF(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 645 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 646 | } |
| 647 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 648 | static QemuOptsList qemu_root_bds_opts; |
| 649 | |
| 650 | /* Takes the ownership of bs_opts */ |
| 651 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
| 652 | { |
| 653 | BlockDriverState *bs; |
| 654 | QemuOpts *opts; |
| 655 | Error *local_error = NULL; |
| 656 | BlockdevDetectZeroesOptions detect_zeroes; |
| 657 | int ret; |
| 658 | int bdrv_flags = 0; |
| 659 | |
| 660 | opts = qemu_opts_create(&qemu_root_bds_opts, NULL, 1, errp); |
| 661 | if (!opts) { |
| 662 | goto fail; |
| 663 | } |
| 664 | |
| 665 | qemu_opts_absorb_qdict(opts, bs_opts, &local_error); |
| 666 | if (local_error) { |
| 667 | error_propagate(errp, local_error); |
| 668 | goto fail; |
| 669 | } |
| 670 | |
| 671 | extract_common_blockdev_options(opts, &bdrv_flags, NULL, NULL, |
| 672 | &detect_zeroes, &local_error); |
| 673 | if (local_error) { |
| 674 | error_propagate(errp, local_error); |
| 675 | goto fail; |
| 676 | } |
| 677 | |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 678 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 679 | * with other callers) rather than what we want as the real defaults. |
| 680 | * Apply the defaults here instead. */ |
| 681 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_WB, "on"); |
| 682 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 683 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
| 684 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 685 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 686 | bdrv_flags |= BDRV_O_INACTIVE; |
| 687 | } |
| 688 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 689 | bs = NULL; |
| 690 | ret = bdrv_open(&bs, NULL, NULL, bs_opts, bdrv_flags, errp); |
| 691 | if (ret < 0) { |
| 692 | goto fail_no_bs_opts; |
| 693 | } |
| 694 | |
| 695 | bs->detect_zeroes = detect_zeroes; |
| 696 | |
| 697 | fail_no_bs_opts: |
| 698 | qemu_opts_del(opts); |
| 699 | return bs; |
| 700 | |
| 701 | fail: |
| 702 | qemu_opts_del(opts); |
| 703 | QDECREF(bs_opts); |
| 704 | return NULL; |
| 705 | } |
| 706 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 707 | void blockdev_close_all_bdrv_states(void) |
| 708 | { |
| 709 | BlockDriverState *bs, *next_bs; |
| 710 | |
| 711 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { |
| 712 | AioContext *ctx = bdrv_get_aio_context(bs); |
| 713 | |
| 714 | aio_context_acquire(ctx); |
| 715 | bdrv_unref(bs); |
| 716 | aio_context_release(ctx); |
| 717 | } |
| 718 | } |
| 719 | |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 720 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
| 721 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 722 | { |
| 723 | const char *value; |
| 724 | |
| 725 | value = qemu_opt_get(opts, from); |
| 726 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 727 | if (qemu_opt_find(opts, to)) { |
| 728 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 729 | "same time", to, from); |
| 730 | return; |
| 731 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 732 | } |
| 733 | |
| 734 | /* rename all items in opts */ |
| 735 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 736 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 737 | qemu_opt_unset(opts, from); |
| 738 | } |
| 739 | } |
| 740 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 741 | QemuOptsList qemu_legacy_drive_opts = { |
| 742 | .name = "drive", |
| 743 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 744 | .desc = { |
| 745 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 746 | .name = "bus", |
| 747 | .type = QEMU_OPT_NUMBER, |
| 748 | .help = "bus number", |
| 749 | },{ |
| 750 | .name = "unit", |
| 751 | .type = QEMU_OPT_NUMBER, |
| 752 | .help = "unit number (i.e. lun for scsi)", |
| 753 | },{ |
| 754 | .name = "index", |
| 755 | .type = QEMU_OPT_NUMBER, |
| 756 | .help = "index number", |
| 757 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 758 | .name = "media", |
| 759 | .type = QEMU_OPT_STRING, |
| 760 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 761 | },{ |
| 762 | .name = "if", |
| 763 | .type = QEMU_OPT_STRING, |
| 764 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 765 | },{ |
| 766 | .name = "cyls", |
| 767 | .type = QEMU_OPT_NUMBER, |
| 768 | .help = "number of cylinders (ide disk geometry)", |
| 769 | },{ |
| 770 | .name = "heads", |
| 771 | .type = QEMU_OPT_NUMBER, |
| 772 | .help = "number of heads (ide disk geometry)", |
| 773 | },{ |
| 774 | .name = "secs", |
| 775 | .type = QEMU_OPT_NUMBER, |
| 776 | .help = "number of sectors (ide disk geometry)", |
| 777 | },{ |
| 778 | .name = "trans", |
| 779 | .type = QEMU_OPT_STRING, |
| 780 | .help = "chs translation (auto, lba, none)", |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 781 | },{ |
| 782 | .name = "boot", |
| 783 | .type = QEMU_OPT_BOOL, |
| 784 | .help = "(deprecated, ignored)", |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 785 | },{ |
| 786 | .name = "addr", |
| 787 | .type = QEMU_OPT_STRING, |
| 788 | .help = "pci address (virtio only)", |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 789 | },{ |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 790 | .name = "serial", |
| 791 | .type = QEMU_OPT_STRING, |
| 792 | .help = "disk serial number", |
| 793 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 794 | .name = "file", |
| 795 | .type = QEMU_OPT_STRING, |
| 796 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 797 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 798 | |
| 799 | /* Options that are passed on, but have special semantics with -drive */ |
| 800 | { |
| 801 | .name = "read-only", |
| 802 | .type = QEMU_OPT_BOOL, |
| 803 | .help = "open drive file as read-only", |
| 804 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 805 | .name = "rerror", |
| 806 | .type = QEMU_OPT_STRING, |
| 807 | .help = "read error action", |
| 808 | },{ |
| 809 | .name = "werror", |
| 810 | .type = QEMU_OPT_STRING, |
| 811 | .help = "write error action", |
| 812 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 813 | .name = "copy-on-read", |
| 814 | .type = QEMU_OPT_BOOL, |
| 815 | .help = "copy read data from backing file into image file", |
| 816 | }, |
| 817 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 818 | { /* end of list */ } |
| 819 | }, |
| 820 | }; |
| 821 | |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 822 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 823 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 824 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 825 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 826 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 827 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 828 | QemuOpts *legacy_opts; |
| 829 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 830 | BlockInterfaceType type; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 831 | int cyls, heads, secs, translation; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 832 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 833 | const char *devaddr; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 834 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 835 | bool read_only = false; |
| 836 | bool copy_on_read; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 837 | const char *serial; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 838 | const char *filename; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 839 | Error *local_err = NULL; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 840 | int i; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 841 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 842 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 843 | static const struct { |
| 844 | const char *from; |
| 845 | const char *to; |
| 846 | } opt_renames[] = { |
| 847 | { "iops", "throttling.iops-total" }, |
| 848 | { "iops_rd", "throttling.iops-read" }, |
| 849 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 850 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 851 | { "bps", "throttling.bps-total" }, |
| 852 | { "bps_rd", "throttling.bps-read" }, |
| 853 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 854 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 855 | { "iops_max", "throttling.iops-total-max" }, |
| 856 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 857 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 858 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 859 | { "bps_max", "throttling.bps-total-max" }, |
| 860 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 861 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 862 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 863 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 864 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 865 | { "group", "throttling.group" }, |
| 866 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 867 | { "readonly", "read-only" }, |
| 868 | }; |
| 869 | |
| 870 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 871 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
| 872 | &local_err); |
| 873 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 874 | error_report_err(local_err); |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 875 | return NULL; |
| 876 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 877 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 878 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 879 | value = qemu_opt_get(all_opts, "cache"); |
| 880 | if (value) { |
| 881 | int flags = 0; |
| 882 | |
| 883 | if (bdrv_parse_cache_flags(value, &flags) != 0) { |
| 884 | error_report("invalid cache option"); |
| 885 | return NULL; |
| 886 | } |
| 887 | |
| 888 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 889 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 890 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 891 | !!(flags & BDRV_O_CACHE_WB), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 892 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 893 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 894 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 895 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 896 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 897 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 898 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 899 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 900 | } |
| 901 | qemu_opt_unset(all_opts, "cache"); |
| 902 | } |
| 903 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 904 | /* Get a QDict for processing the options */ |
| 905 | bs_opts = qdict_new(); |
| 906 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 907 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 908 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 909 | &error_abort); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 910 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 911 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 912 | error_report_err(local_err); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 913 | goto fail; |
| 914 | } |
| 915 | |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 916 | /* Deprecated option boot=[on|off] */ |
| 917 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { |
| 918 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " |
| 919 | "ignored. Future versions will reject this parameter. Please " |
| 920 | "update your scripts.\n"); |
| 921 | } |
| 922 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 923 | /* Media type */ |
| 924 | value = qemu_opt_get(legacy_opts, "media"); |
| 925 | if (value) { |
| 926 | if (!strcmp(value, "disk")) { |
| 927 | media = MEDIA_DISK; |
| 928 | } else if (!strcmp(value, "cdrom")) { |
| 929 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 930 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 931 | } else { |
| 932 | error_report("'%s' invalid media", value); |
| 933 | goto fail; |
| 934 | } |
| 935 | } |
| 936 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 937 | /* copy-on-read is disabled with a warning for read-only devices */ |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 938 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 939 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 940 | |
| 941 | if (read_only && copy_on_read) { |
| 942 | error_report("warning: disabling copy-on-read on read-only drive"); |
| 943 | copy_on_read = false; |
| 944 | } |
| 945 | |
| 946 | qdict_put(bs_opts, "read-only", |
| 947 | qstring_from_str(read_only ? "on" : "off")); |
| 948 | qdict_put(bs_opts, "copy-on-read", |
| 949 | qstring_from_str(copy_on_read ? "on" :"off")); |
| 950 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 951 | /* Controller type */ |
| 952 | value = qemu_opt_get(legacy_opts, "if"); |
| 953 | if (value) { |
| 954 | for (type = 0; |
| 955 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 956 | type++) { |
| 957 | } |
| 958 | if (type == IF_COUNT) { |
| 959 | error_report("unsupported bus type '%s'", value); |
| 960 | goto fail; |
| 961 | } |
| 962 | } else { |
| 963 | type = block_default_type; |
| 964 | } |
| 965 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 966 | /* Geometry */ |
| 967 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); |
| 968 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); |
| 969 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); |
| 970 | |
| 971 | if (cyls || heads || secs) { |
| 972 | if (cyls < 1) { |
| 973 | error_report("invalid physical cyls number"); |
| 974 | goto fail; |
| 975 | } |
| 976 | if (heads < 1) { |
| 977 | error_report("invalid physical heads number"); |
| 978 | goto fail; |
| 979 | } |
| 980 | if (secs < 1) { |
| 981 | error_report("invalid physical secs number"); |
| 982 | goto fail; |
| 983 | } |
| 984 | } |
| 985 | |
| 986 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 987 | value = qemu_opt_get(legacy_opts, "trans"); |
| 988 | if (value != NULL) { |
| 989 | if (!cyls) { |
| 990 | error_report("'%s' trans must be used with cyls, heads and secs", |
| 991 | value); |
| 992 | goto fail; |
| 993 | } |
| 994 | if (!strcmp(value, "none")) { |
| 995 | translation = BIOS_ATA_TRANSLATION_NONE; |
| 996 | } else if (!strcmp(value, "lba")) { |
| 997 | translation = BIOS_ATA_TRANSLATION_LBA; |
Paolo Bonzini | f31c41f | 2014-02-08 11:01:54 +0100 | [diff] [blame] | 998 | } else if (!strcmp(value, "large")) { |
| 999 | translation = BIOS_ATA_TRANSLATION_LARGE; |
| 1000 | } else if (!strcmp(value, "rechs")) { |
| 1001 | translation = BIOS_ATA_TRANSLATION_RECHS; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 1002 | } else if (!strcmp(value, "auto")) { |
| 1003 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 1004 | } else { |
| 1005 | error_report("'%s' invalid translation type", value); |
| 1006 | goto fail; |
| 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | if (media == MEDIA_CDROM) { |
| 1011 | if (cyls || secs || heads) { |
| 1012 | error_report("CHS can't be set with media=cdrom"); |
| 1013 | goto fail; |
| 1014 | } |
| 1015 | } |
| 1016 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1017 | /* Device address specified by bus/unit or index. |
| 1018 | * If none was specified, try to find the first free one. */ |
| 1019 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 1020 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 1021 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 1022 | |
| 1023 | max_devs = if_max_devs[type]; |
| 1024 | |
| 1025 | if (index != -1) { |
| 1026 | if (bus_id != 0 || unit_id != -1) { |
| 1027 | error_report("index cannot be used with bus and unit"); |
| 1028 | goto fail; |
| 1029 | } |
| 1030 | bus_id = drive_index_to_bus_id(type, index); |
| 1031 | unit_id = drive_index_to_unit_id(type, index); |
| 1032 | } |
| 1033 | |
| 1034 | if (unit_id == -1) { |
| 1035 | unit_id = 0; |
| 1036 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 1037 | unit_id++; |
| 1038 | if (max_devs && unit_id >= max_devs) { |
| 1039 | unit_id -= max_devs; |
| 1040 | bus_id++; |
| 1041 | } |
| 1042 | } |
| 1043 | } |
| 1044 | |
| 1045 | if (max_devs && unit_id >= max_devs) { |
| 1046 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); |
| 1047 | goto fail; |
| 1048 | } |
| 1049 | |
| 1050 | if (drive_get(type, bus_id, unit_id) != NULL) { |
| 1051 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
| 1052 | bus_id, unit_id, index); |
| 1053 | goto fail; |
| 1054 | } |
| 1055 | |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1056 | /* Serial number */ |
| 1057 | serial = qemu_opt_get(legacy_opts, "serial"); |
| 1058 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1059 | /* no id supplied -> create one */ |
| 1060 | if (qemu_opts_id(all_opts) == NULL) { |
| 1061 | char *new_id; |
| 1062 | const char *mediastr = ""; |
| 1063 | if (type == IF_IDE || type == IF_SCSI) { |
| 1064 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 1065 | } |
| 1066 | if (max_devs) { |
| 1067 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 1068 | mediastr, unit_id); |
| 1069 | } else { |
| 1070 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 1071 | mediastr, unit_id); |
| 1072 | } |
| 1073 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); |
| 1074 | g_free(new_id); |
| 1075 | } |
| 1076 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1077 | /* Add virtio block device */ |
| 1078 | devaddr = qemu_opt_get(legacy_opts, "addr"); |
| 1079 | if (devaddr && type != IF_VIRTIO) { |
| 1080 | error_report("addr is not supported by this bus type"); |
| 1081 | goto fail; |
| 1082 | } |
| 1083 | |
| 1084 | if (type == IF_VIRTIO) { |
| 1085 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 1086 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 1087 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1088 | if (arch_type == QEMU_ARCH_S390X) { |
Alexander Graf | 1f68f1d | 2015-06-16 23:06:33 +0200 | [diff] [blame] | 1089 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1090 | } else { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1091 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1092 | } |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1093 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 1094 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1095 | if (devaddr) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1096 | qemu_opt_set(devopts, "addr", devaddr, &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1097 | } |
| 1098 | } |
| 1099 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 1100 | filename = qemu_opt_get(legacy_opts, "file"); |
| 1101 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1102 | /* Check werror/rerror compatibility with if=... */ |
| 1103 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 1104 | if (werror != NULL) { |
| 1105 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 1106 | type != IF_NONE) { |
| 1107 | error_report("werror is not supported by this bus type"); |
| 1108 | goto fail; |
| 1109 | } |
| 1110 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); |
| 1111 | } |
| 1112 | |
| 1113 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 1114 | if (rerror != NULL) { |
| 1115 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 1116 | type != IF_NONE) { |
| 1117 | error_report("rerror is not supported by this bus type"); |
| 1118 | goto fail; |
| 1119 | } |
| 1120 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); |
| 1121 | } |
| 1122 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1123 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1124 | blk = blockdev_init(filename, bs_opts, &local_err); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1125 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1126 | if (!blk) { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1127 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 1128 | error_report_err(local_err); |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 1129 | } |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1130 | goto fail; |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 1131 | } else { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1132 | assert(!local_err); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1133 | } |
| 1134 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1135 | /* Create legacy DriveInfo */ |
| 1136 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1137 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1138 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 1139 | dinfo->cyls = cyls; |
| 1140 | dinfo->heads = heads; |
| 1141 | dinfo->secs = secs; |
| 1142 | dinfo->trans = translation; |
| 1143 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1144 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1145 | dinfo->bus = bus_id; |
| 1146 | dinfo->unit = unit_id; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1147 | dinfo->devaddr = devaddr; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1148 | dinfo->serial = g_strdup(serial); |
| 1149 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1150 | blk_set_legacy_dinfo(blk, dinfo); |
| 1151 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1152 | switch(type) { |
| 1153 | case IF_IDE: |
| 1154 | case IF_SCSI: |
| 1155 | case IF_XEN: |
| 1156 | case IF_NONE: |
| 1157 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1158 | break; |
| 1159 | default: |
| 1160 | break; |
| 1161 | } |
| 1162 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1163 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1164 | qemu_opts_del(legacy_opts); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1165 | QDECREF(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1166 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1167 | } |
| 1168 | |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame] | 1169 | void hmp_commit(Monitor *mon, const QDict *qdict) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1170 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1171 | const char *device = qdict_get_str(qdict, "device"); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1172 | BlockBackend *blk; |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 1173 | int ret; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1174 | |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1175 | if (!strcmp(device, "all")) { |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 1176 | ret = bdrv_commit_all(); |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1177 | } else { |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1178 | BlockDriverState *bs; |
| 1179 | AioContext *aio_context; |
| 1180 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1181 | blk = blk_by_name(device); |
| 1182 | if (!blk) { |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1183 | monitor_printf(mon, "Device '%s' not found\n", device); |
Markus Armbruster | ac59eb9 | 2010-06-02 18:55:19 +0200 | [diff] [blame] | 1184 | return; |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1185 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1186 | if (!blk_is_available(blk)) { |
| 1187 | monitor_printf(mon, "Device '%s' has no medium\n", device); |
| 1188 | return; |
| 1189 | } |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1190 | |
| 1191 | bs = blk_bs(blk); |
| 1192 | aio_context = bdrv_get_aio_context(bs); |
| 1193 | aio_context_acquire(aio_context); |
| 1194 | |
| 1195 | ret = bdrv_commit(bs); |
| 1196 | |
| 1197 | aio_context_release(aio_context); |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1198 | } |
| 1199 | if (ret < 0) { |
| 1200 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, |
| 1201 | strerror(-ret)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1202 | } |
| 1203 | } |
| 1204 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1205 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1206 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1207 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1208 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1209 | list.value = action; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1210 | list.next = NULL; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1211 | qmp_transaction(&list, false, NULL, errp); |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1212 | } |
| 1213 | |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1214 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
| 1215 | bool has_node_name, const char *node_name, |
| 1216 | const char *snapshot_file, |
| 1217 | bool has_snapshot_node_name, |
| 1218 | const char *snapshot_node_name, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 1219 | bool has_format, const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1220 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1221 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1222 | BlockdevSnapshotSync snapshot = { |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1223 | .has_device = has_device, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1224 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1225 | .has_node_name = has_node_name, |
| 1226 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1227 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1228 | .has_snapshot_node_name = has_snapshot_node_name, |
| 1229 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1230 | .has_format = has_format, |
| 1231 | .format = (char *) format, |
| 1232 | .has_mode = has_mode, |
| 1233 | .mode = mode, |
| 1234 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1235 | TransactionAction action = { |
| 1236 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
| 1237 | .u.blockdev_snapshot_sync = &snapshot, |
| 1238 | }; |
| 1239 | blockdev_do_action(&action, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1240 | } |
| 1241 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1242 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1243 | Error **errp) |
| 1244 | { |
| 1245 | BlockdevSnapshot snapshot_data = { |
| 1246 | .node = (char *) node, |
| 1247 | .overlay = (char *) overlay |
| 1248 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1249 | TransactionAction action = { |
| 1250 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
| 1251 | .u.blockdev_snapshot = &snapshot_data, |
| 1252 | }; |
| 1253 | blockdev_do_action(&action, errp); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1254 | } |
| 1255 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1256 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1257 | const char *name, |
| 1258 | Error **errp) |
| 1259 | { |
| 1260 | BlockdevSnapshotInternal snapshot = { |
| 1261 | .device = (char *) device, |
| 1262 | .name = (char *) name |
| 1263 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1264 | TransactionAction action = { |
| 1265 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
| 1266 | .u.blockdev_snapshot_internal_sync = &snapshot, |
| 1267 | }; |
| 1268 | blockdev_do_action(&action, errp); |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1269 | } |
| 1270 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1271 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 1272 | bool has_id, |
| 1273 | const char *id, |
| 1274 | bool has_name, |
| 1275 | const char *name, |
| 1276 | Error **errp) |
| 1277 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1278 | BlockDriverState *bs; |
| 1279 | BlockBackend *blk; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1280 | AioContext *aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1281 | QEMUSnapshotInfo sn; |
| 1282 | Error *local_err = NULL; |
| 1283 | SnapshotInfo *info = NULL; |
| 1284 | int ret; |
| 1285 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1286 | blk = blk_by_name(device); |
| 1287 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1288 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1289 | "Device '%s' not found", device); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1290 | return NULL; |
| 1291 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1292 | |
| 1293 | aio_context = blk_get_aio_context(blk); |
| 1294 | aio_context_acquire(aio_context); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1295 | |
| 1296 | if (!has_id) { |
| 1297 | id = NULL; |
| 1298 | } |
| 1299 | |
| 1300 | if (!has_name) { |
| 1301 | name = NULL; |
| 1302 | } |
| 1303 | |
| 1304 | if (!id && !name) { |
| 1305 | error_setg(errp, "Name or id must be provided"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1306 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1307 | } |
| 1308 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1309 | if (!blk_is_available(blk)) { |
| 1310 | error_setg(errp, "Device '%s' has no medium", device); |
| 1311 | goto out_aio_context; |
| 1312 | } |
| 1313 | bs = blk_bs(blk); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1314 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1315 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
| 1316 | goto out_aio_context; |
| 1317 | } |
| 1318 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1319 | 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] | 1320 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1321 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1322 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1323 | } |
| 1324 | if (!ret) { |
| 1325 | error_setg(errp, |
| 1326 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1327 | "device '%s'", |
| 1328 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1329 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1330 | } |
| 1331 | |
| 1332 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1333 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1334 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1335 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1336 | } |
| 1337 | |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1338 | aio_context_release(aio_context); |
| 1339 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1340 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1341 | info->id = g_strdup(sn.id_str); |
| 1342 | info->name = g_strdup(sn.name); |
| 1343 | info->date_nsec = sn.date_nsec; |
| 1344 | info->date_sec = sn.date_sec; |
| 1345 | info->vm_state_size = sn.vm_state_size; |
| 1346 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1347 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
| 1348 | |
| 1349 | return info; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1350 | |
| 1351 | out_aio_context: |
| 1352 | aio_context_release(aio_context); |
| 1353 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1354 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1355 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1356 | /** |
| 1357 | * block_dirty_bitmap_lookup: |
| 1358 | * Return a dirty bitmap (if present), after validating |
| 1359 | * the node reference and bitmap names. |
| 1360 | * |
| 1361 | * @node: The name of the BDS node to search for bitmaps |
| 1362 | * @name: The name of the bitmap to search for |
| 1363 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. |
| 1364 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. |
| 1365 | * @errp: Output pointer for error information. Can be NULL. |
| 1366 | * |
| 1367 | * @return: A bitmap object on success, or NULL on failure. |
| 1368 | */ |
| 1369 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, |
| 1370 | const char *name, |
| 1371 | BlockDriverState **pbs, |
| 1372 | AioContext **paio, |
| 1373 | Error **errp) |
| 1374 | { |
| 1375 | BlockDriverState *bs; |
| 1376 | BdrvDirtyBitmap *bitmap; |
| 1377 | AioContext *aio_context; |
| 1378 | |
| 1379 | if (!node) { |
| 1380 | error_setg(errp, "Node cannot be NULL"); |
| 1381 | return NULL; |
| 1382 | } |
| 1383 | if (!name) { |
| 1384 | error_setg(errp, "Bitmap name cannot be NULL"); |
| 1385 | return NULL; |
| 1386 | } |
| 1387 | bs = bdrv_lookup_bs(node, node, NULL); |
| 1388 | if (!bs) { |
| 1389 | error_setg(errp, "Node '%s' not found", node); |
| 1390 | return NULL; |
| 1391 | } |
| 1392 | |
| 1393 | aio_context = bdrv_get_aio_context(bs); |
| 1394 | aio_context_acquire(aio_context); |
| 1395 | |
| 1396 | bitmap = bdrv_find_dirty_bitmap(bs, name); |
| 1397 | if (!bitmap) { |
| 1398 | error_setg(errp, "Dirty bitmap '%s' not found", name); |
| 1399 | goto fail; |
| 1400 | } |
| 1401 | |
| 1402 | if (pbs) { |
| 1403 | *pbs = bs; |
| 1404 | } |
| 1405 | if (paio) { |
| 1406 | *paio = aio_context; |
| 1407 | } else { |
| 1408 | aio_context_release(aio_context); |
| 1409 | } |
| 1410 | |
| 1411 | return bitmap; |
| 1412 | |
| 1413 | fail: |
| 1414 | aio_context_release(aio_context); |
| 1415 | return NULL; |
| 1416 | } |
| 1417 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1418 | /* New and old BlockDriverState structs for atomic group operations */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1419 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1420 | typedef struct BlkActionState BlkActionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1421 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1422 | /** |
| 1423 | * BlkActionOps: |
| 1424 | * Table of operations that define an Action. |
| 1425 | * |
| 1426 | * @instance_size: Size of state struct, in bytes. |
| 1427 | * @prepare: Prepare the work, must NOT be NULL. |
| 1428 | * @commit: Commit the changes, can be NULL. |
| 1429 | * @abort: Abort the changes on fail, can be NULL. |
| 1430 | * @clean: Clean up resources after all transaction actions have called |
| 1431 | * commit() or abort(). Can be NULL. |
| 1432 | * |
| 1433 | * Only prepare() may fail. In a single transaction, only one of commit() or |
| 1434 | * 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] | 1435 | */ |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1436 | typedef struct BlkActionOps { |
| 1437 | size_t instance_size; |
| 1438 | void (*prepare)(BlkActionState *common, Error **errp); |
| 1439 | void (*commit)(BlkActionState *common); |
| 1440 | void (*abort)(BlkActionState *common); |
| 1441 | void (*clean)(BlkActionState *common); |
| 1442 | } BlkActionOps; |
| 1443 | |
| 1444 | /** |
| 1445 | * BlkActionState: |
| 1446 | * Describes one Action's state within a Transaction. |
| 1447 | * |
| 1448 | * @action: QAPI-defined enum identifying which Action to perform. |
| 1449 | * @ops: Table of ActionOps this Action can perform. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1450 | * @block_job_txn: Transaction which this action belongs to. |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1451 | * @entry: List membership for all Actions in this Transaction. |
| 1452 | * |
| 1453 | * This structure must be arranged as first member in a subclassed type, |
| 1454 | * assuming that the compiler will also arrange it to the same offsets as the |
| 1455 | * base class. |
| 1456 | */ |
| 1457 | struct BlkActionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1458 | TransactionAction *action; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1459 | const BlkActionOps *ops; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1460 | BlockJobTxn *block_job_txn; |
| 1461 | TransactionProperties *txn_props; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1462 | QSIMPLEQ_ENTRY(BlkActionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1463 | }; |
| 1464 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1465 | /* internal snapshot private data */ |
| 1466 | typedef struct InternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1467 | BlkActionState common; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1468 | BlockDriverState *bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1469 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1470 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1471 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1472 | } InternalSnapshotState; |
| 1473 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1474 | |
| 1475 | static int action_check_completion_mode(BlkActionState *s, Error **errp) |
| 1476 | { |
| 1477 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 1478 | error_setg(errp, |
| 1479 | "Action '%s' does not support Transaction property " |
| 1480 | "completion-mode = %s", |
| 1481 | TransactionActionKind_lookup[s->action->type], |
| 1482 | ActionCompletionMode_lookup[s->txn_props->completion_mode]); |
| 1483 | return -1; |
| 1484 | } |
| 1485 | return 0; |
| 1486 | } |
| 1487 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1488 | static void internal_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1489 | Error **errp) |
| 1490 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1491 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1492 | const char *device; |
| 1493 | const char *name; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1494 | BlockBackend *blk; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1495 | BlockDriverState *bs; |
| 1496 | QEMUSnapshotInfo old_sn, *sn; |
| 1497 | bool ret; |
| 1498 | qemu_timeval tv; |
| 1499 | BlockdevSnapshotInternal *internal; |
| 1500 | InternalSnapshotState *state; |
| 1501 | int ret1; |
| 1502 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1503 | g_assert(common->action->type == |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1504 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1505 | internal = common->action->u.blockdev_snapshot_internal_sync; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1506 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1507 | |
| 1508 | /* 1. parse input */ |
| 1509 | device = internal->device; |
| 1510 | name = internal->name; |
| 1511 | |
| 1512 | /* 2. check for validation */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1513 | if (action_check_completion_mode(common, errp) < 0) { |
| 1514 | return; |
| 1515 | } |
| 1516 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1517 | blk = blk_by_name(device); |
| 1518 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1519 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1520 | "Device '%s' not found", device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1521 | return; |
| 1522 | } |
| 1523 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1524 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1525 | state->aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1526 | aio_context_acquire(state->aio_context); |
| 1527 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1528 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1529 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1530 | return; |
| 1531 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1532 | bs = blk_bs(blk); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1533 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1534 | state->bs = bs; |
| 1535 | bdrv_drained_begin(bs); |
| 1536 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1537 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
| 1538 | return; |
| 1539 | } |
| 1540 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1541 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1542 | error_setg(errp, "Device '%s' is read only", device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1543 | return; |
| 1544 | } |
| 1545 | |
| 1546 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1547 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1548 | "does not support internal snapshots", |
| 1549 | bs->drv->format_name, device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1550 | return; |
| 1551 | } |
| 1552 | |
| 1553 | if (!strlen(name)) { |
| 1554 | error_setg(errp, "Name is empty"); |
| 1555 | return; |
| 1556 | } |
| 1557 | |
| 1558 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1559 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1560 | &local_err); |
| 1561 | if (local_err) { |
| 1562 | error_propagate(errp, local_err); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1563 | return; |
| 1564 | } else if (ret) { |
| 1565 | error_setg(errp, |
| 1566 | "Snapshot with name '%s' already exists on device '%s'", |
| 1567 | name, device); |
| 1568 | return; |
| 1569 | } |
| 1570 | |
| 1571 | /* 3. take the snapshot */ |
| 1572 | sn = &state->sn; |
| 1573 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1574 | qemu_gettimeofday(&tv); |
| 1575 | sn->date_sec = tv.tv_sec; |
| 1576 | sn->date_nsec = tv.tv_usec * 1000; |
| 1577 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1578 | |
| 1579 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1580 | if (ret1 < 0) { |
| 1581 | error_setg_errno(errp, -ret1, |
| 1582 | "Failed to create snapshot '%s' on device '%s'", |
| 1583 | name, device); |
| 1584 | return; |
| 1585 | } |
| 1586 | |
| 1587 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1588 | state->created = true; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1589 | } |
| 1590 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1591 | static void internal_snapshot_abort(BlkActionState *common) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1592 | { |
| 1593 | InternalSnapshotState *state = |
| 1594 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1595 | BlockDriverState *bs = state->bs; |
| 1596 | QEMUSnapshotInfo *sn = &state->sn; |
| 1597 | Error *local_error = NULL; |
| 1598 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1599 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1600 | return; |
| 1601 | } |
| 1602 | |
| 1603 | 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] | 1604 | error_reportf_err(local_error, |
| 1605 | "Failed to delete snapshot with id '%s' and " |
| 1606 | "name '%s' on device '%s' in abort: ", |
| 1607 | sn->id_str, sn->name, |
| 1608 | bdrv_get_device_name(bs)); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1609 | } |
| 1610 | } |
| 1611 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1612 | static void internal_snapshot_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1613 | { |
| 1614 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, |
| 1615 | common, common); |
| 1616 | |
| 1617 | if (state->aio_context) { |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1618 | if (state->bs) { |
| 1619 | bdrv_drained_end(state->bs); |
| 1620 | } |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1621 | aio_context_release(state->aio_context); |
| 1622 | } |
| 1623 | } |
| 1624 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1625 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1626 | typedef struct ExternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1627 | BlkActionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1628 | BlockDriverState *old_bs; |
| 1629 | BlockDriverState *new_bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1630 | AioContext *aio_context; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1631 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1632 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1633 | static void external_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1634 | Error **errp) |
| 1635 | { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1636 | int flags = 0, ret; |
| 1637 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1638 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1639 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1640 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1641 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1642 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1643 | const char *snapshot_ref; |
| 1644 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1645 | const char *new_image_file; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1646 | ExternalSnapshotState *state = |
| 1647 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1648 | TransactionAction *action = common->action; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1649 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1650 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1651 | * purpose but a different set of parameters */ |
| 1652 | switch (action->type) { |
| 1653 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1654 | { |
| 1655 | BlockdevSnapshot *s = action->u.blockdev_snapshot; |
| 1656 | device = s->node; |
| 1657 | node_name = s->node; |
| 1658 | new_image_file = NULL; |
| 1659 | snapshot_ref = s->overlay; |
| 1660 | } |
| 1661 | break; |
| 1662 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1663 | { |
| 1664 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync; |
| 1665 | device = s->has_device ? s->device : NULL; |
| 1666 | node_name = s->has_node_name ? s->node_name : NULL; |
| 1667 | new_image_file = s->snapshot_file; |
| 1668 | snapshot_ref = NULL; |
| 1669 | } |
| 1670 | break; |
| 1671 | default: |
| 1672 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1673 | } |
| 1674 | |
| 1675 | /* start processing */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1676 | if (action_check_completion_mode(common, errp) < 0) { |
| 1677 | return; |
| 1678 | } |
| 1679 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1680 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1681 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1682 | return; |
| 1683 | } |
| 1684 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1685 | /* Acquire AioContext now so any threads operating on old_bs stop */ |
| 1686 | state->aio_context = bdrv_get_aio_context(state->old_bs); |
| 1687 | aio_context_acquire(state->aio_context); |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1688 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1689 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1690 | if (!bdrv_is_inserted(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1691 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1692 | return; |
| 1693 | } |
| 1694 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1695 | if (bdrv_op_is_blocked(state->old_bs, |
| 1696 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1697 | return; |
| 1698 | } |
| 1699 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1700 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1701 | if (bdrv_flush(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1702 | error_setg(errp, QERR_IO_ERROR); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1703 | return; |
| 1704 | } |
| 1705 | } |
| 1706 | |
Benoît Canet | 212a5a8 | 2014-01-23 21:31:36 +0100 | [diff] [blame] | 1707 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1708 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
Benoît Canet | f6186f4 | 2013-10-02 14:33:48 +0200 | [diff] [blame] | 1709 | return; |
| 1710 | } |
| 1711 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1712 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
| 1713 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync; |
| 1714 | const char *format = s->has_format ? s->format : "qcow2"; |
| 1715 | enum NewImageMode mode; |
| 1716 | const char *snapshot_node_name = |
| 1717 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1718 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1719 | if (node_name && !snapshot_node_name) { |
| 1720 | error_setg(errp, "New snapshot node name missing"); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1721 | return; |
| 1722 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1723 | |
| 1724 | if (snapshot_node_name && |
| 1725 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
| 1726 | error_setg(errp, "New snapshot node name already in use"); |
| 1727 | return; |
| 1728 | } |
| 1729 | |
| 1730 | flags = state->old_bs->open_flags; |
| 1731 | |
| 1732 | /* create new image w/backing file */ |
| 1733 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1734 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1735 | int64_t size = bdrv_getlength(state->old_bs); |
| 1736 | if (size < 0) { |
| 1737 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
| 1738 | return; |
| 1739 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1740 | bdrv_img_create(new_image_file, format, |
| 1741 | state->old_bs->filename, |
| 1742 | state->old_bs->drv->format_name, |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1743 | NULL, size, flags, &local_err, false); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1744 | if (local_err) { |
| 1745 | error_propagate(errp, local_err); |
| 1746 | return; |
| 1747 | } |
| 1748 | } |
| 1749 | |
| 1750 | options = qdict_new(); |
| 1751 | if (s->has_snapshot_node_name) { |
| 1752 | qdict_put(options, "node-name", |
| 1753 | qstring_from_str(snapshot_node_name)); |
| 1754 | } |
| 1755 | qdict_put(options, "driver", qstring_from_str(format)); |
| 1756 | |
| 1757 | flags |= BDRV_O_NO_BACKING; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1758 | } |
| 1759 | |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1760 | assert(state->new_bs == NULL); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1761 | ret = bdrv_open(&state->new_bs, new_image_file, snapshot_ref, options, |
| 1762 | flags, errp); |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1763 | /* We will manually add the backing_hd field to the bs later */ |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1764 | if (ret != 0) { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1765 | return; |
| 1766 | } |
| 1767 | |
| 1768 | if (state->new_bs->blk != NULL) { |
| 1769 | error_setg(errp, "The snapshot is already in use by %s", |
| 1770 | blk_name(state->new_bs->blk)); |
| 1771 | return; |
| 1772 | } |
| 1773 | |
| 1774 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, |
| 1775 | errp)) { |
| 1776 | return; |
| 1777 | } |
| 1778 | |
| 1779 | if (state->new_bs->backing != NULL) { |
| 1780 | error_setg(errp, "The snapshot already has a backing image"); |
Alberto Garcia | 08b24cf | 2015-11-03 12:32:35 +0200 | [diff] [blame] | 1781 | return; |
| 1782 | } |
| 1783 | |
| 1784 | if (!state->new_bs->drv->supports_backing) { |
| 1785 | error_setg(errp, "The snapshot does not support backing images"); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1786 | } |
| 1787 | } |
| 1788 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1789 | static void external_snapshot_commit(BlkActionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1790 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1791 | ExternalSnapshotState *state = |
| 1792 | DO_UPCAST(ExternalSnapshotState, common, common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1793 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1794 | bdrv_set_aio_context(state->new_bs, state->aio_context); |
| 1795 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1796 | /* This removes our old bs and adds the new bs */ |
| 1797 | bdrv_append(state->new_bs, state->old_bs); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1798 | /* We don't need (or want) to use the transactional |
| 1799 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1800 | * don't want to abort all of them if one of them fails the reopen */ |
Kevin Wolf | dd62f1c | 2015-06-18 14:09:57 +0200 | [diff] [blame] | 1801 | bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR, |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1802 | NULL); |
| 1803 | } |
| 1804 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1805 | static void external_snapshot_abort(BlkActionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1806 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1807 | ExternalSnapshotState *state = |
| 1808 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1809 | if (state->new_bs) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 1810 | bdrv_unref(state->new_bs); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1811 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1812 | } |
| 1813 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1814 | static void external_snapshot_clean(BlkActionState *common) |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1815 | { |
| 1816 | ExternalSnapshotState *state = |
| 1817 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1818 | if (state->aio_context) { |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1819 | bdrv_drained_end(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1820 | aio_context_release(state->aio_context); |
| 1821 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1822 | } |
| 1823 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1824 | typedef struct DriveBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1825 | BlkActionState common; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1826 | BlockDriverState *bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1827 | AioContext *aio_context; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1828 | BlockJob *job; |
| 1829 | } DriveBackupState; |
| 1830 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1831 | static void do_drive_backup(const char *device, const char *target, |
| 1832 | bool has_format, const char *format, |
| 1833 | enum MirrorSyncMode sync, |
| 1834 | bool has_mode, enum NewImageMode mode, |
| 1835 | bool has_speed, int64_t speed, |
| 1836 | bool has_bitmap, const char *bitmap, |
| 1837 | bool has_on_source_error, |
| 1838 | BlockdevOnError on_source_error, |
| 1839 | bool has_on_target_error, |
| 1840 | BlockdevOnError on_target_error, |
| 1841 | BlockJobTxn *txn, Error **errp); |
| 1842 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1843 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1844 | { |
| 1845 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1846 | BlockBackend *blk; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1847 | DriveBackup *backup; |
| 1848 | Error *local_err = NULL; |
| 1849 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1850 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
| 1851 | backup = common->action->u.drive_backup; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1852 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1853 | blk = blk_by_name(backup->device); |
| 1854 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1855 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1856 | "Device '%s' not found", backup->device); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1857 | return; |
| 1858 | } |
| 1859 | |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1860 | if (!blk_is_available(blk)) { |
| 1861 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); |
| 1862 | return; |
| 1863 | } |
| 1864 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1865 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1866 | state->aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1867 | aio_context_acquire(state->aio_context); |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1868 | bdrv_drained_begin(blk_bs(blk)); |
| 1869 | state->bs = blk_bs(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1870 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1871 | do_drive_backup(backup->device, backup->target, |
| 1872 | backup->has_format, backup->format, |
| 1873 | backup->sync, |
| 1874 | backup->has_mode, backup->mode, |
| 1875 | backup->has_speed, backup->speed, |
| 1876 | backup->has_bitmap, backup->bitmap, |
| 1877 | backup->has_on_source_error, backup->on_source_error, |
| 1878 | backup->has_on_target_error, backup->on_target_error, |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1879 | common->block_job_txn, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1880 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1881 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1882 | return; |
| 1883 | } |
| 1884 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1885 | state->job = state->bs->job; |
| 1886 | } |
| 1887 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1888 | static void drive_backup_abort(BlkActionState *common) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1889 | { |
| 1890 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1891 | BlockDriverState *bs = state->bs; |
| 1892 | |
| 1893 | /* Only cancel if it's the job we started */ |
| 1894 | if (bs && bs->job && bs->job == state->job) { |
| 1895 | block_job_cancel_sync(bs->job); |
| 1896 | } |
| 1897 | } |
| 1898 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1899 | static void drive_backup_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1900 | { |
| 1901 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1902 | |
| 1903 | if (state->aio_context) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1904 | bdrv_drained_end(state->bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1905 | aio_context_release(state->aio_context); |
| 1906 | } |
| 1907 | } |
| 1908 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1909 | typedef struct BlockdevBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1910 | BlkActionState common; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1911 | BlockDriverState *bs; |
| 1912 | BlockJob *job; |
| 1913 | AioContext *aio_context; |
| 1914 | } BlockdevBackupState; |
| 1915 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1916 | static void do_blockdev_backup(const char *device, const char *target, |
| 1917 | enum MirrorSyncMode sync, |
| 1918 | bool has_speed, int64_t speed, |
| 1919 | bool has_on_source_error, |
| 1920 | BlockdevOnError on_source_error, |
| 1921 | bool has_on_target_error, |
| 1922 | BlockdevOnError on_target_error, |
| 1923 | BlockJobTxn *txn, Error **errp); |
| 1924 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1925 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1926 | { |
| 1927 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1928 | BlockdevBackup *backup; |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1929 | BlockBackend *blk, *target; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1930 | Error *local_err = NULL; |
| 1931 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1932 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
| 1933 | backup = common->action->u.blockdev_backup; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1934 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1935 | blk = blk_by_name(backup->device); |
| 1936 | if (!blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 1937 | error_setg(errp, "Device '%s' not found", backup->device); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1938 | return; |
| 1939 | } |
| 1940 | |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1941 | if (!blk_is_available(blk)) { |
| 1942 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); |
| 1943 | return; |
| 1944 | } |
| 1945 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1946 | target = blk_by_name(backup->target); |
| 1947 | if (!target) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 1948 | error_setg(errp, "Device '%s' not found", backup->target); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1949 | return; |
| 1950 | } |
| 1951 | |
| 1952 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1953 | state->aio_context = blk_get_aio_context(blk); |
| 1954 | if (state->aio_context != blk_get_aio_context(target)) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1955 | state->aio_context = NULL; |
| 1956 | error_setg(errp, "Backup between two IO threads is not implemented"); |
| 1957 | return; |
| 1958 | } |
| 1959 | aio_context_acquire(state->aio_context); |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1960 | state->bs = blk_bs(blk); |
| 1961 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1962 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1963 | do_blockdev_backup(backup->device, backup->target, |
| 1964 | backup->sync, |
| 1965 | backup->has_speed, backup->speed, |
| 1966 | backup->has_on_source_error, backup->on_source_error, |
| 1967 | backup->has_on_target_error, backup->on_target_error, |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1968 | common->block_job_txn, &local_err); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1969 | if (local_err) { |
| 1970 | error_propagate(errp, local_err); |
| 1971 | return; |
| 1972 | } |
| 1973 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1974 | state->job = state->bs->job; |
| 1975 | } |
| 1976 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1977 | static void blockdev_backup_abort(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1978 | { |
| 1979 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1980 | BlockDriverState *bs = state->bs; |
| 1981 | |
| 1982 | /* Only cancel if it's the job we started */ |
| 1983 | if (bs && bs->job && bs->job == state->job) { |
| 1984 | block_job_cancel_sync(bs->job); |
| 1985 | } |
| 1986 | } |
| 1987 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1988 | static void blockdev_backup_clean(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1989 | { |
| 1990 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1991 | |
| 1992 | if (state->aio_context) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1993 | bdrv_drained_end(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1994 | aio_context_release(state->aio_context); |
| 1995 | } |
| 1996 | } |
| 1997 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1998 | typedef struct BlockDirtyBitmapState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1999 | BlkActionState common; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2000 | BdrvDirtyBitmap *bitmap; |
| 2001 | BlockDriverState *bs; |
| 2002 | AioContext *aio_context; |
| 2003 | HBitmap *backup; |
| 2004 | bool prepared; |
| 2005 | } BlockDirtyBitmapState; |
| 2006 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2007 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2008 | Error **errp) |
| 2009 | { |
| 2010 | Error *local_err = NULL; |
| 2011 | BlockDirtyBitmapAdd *action; |
| 2012 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2013 | common, common); |
| 2014 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2015 | if (action_check_completion_mode(common, errp) < 0) { |
| 2016 | return; |
| 2017 | } |
| 2018 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2019 | action = common->action->u.block_dirty_bitmap_add; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2020 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
| 2021 | qmp_block_dirty_bitmap_add(action->node, action->name, |
| 2022 | action->has_granularity, action->granularity, |
| 2023 | &local_err); |
| 2024 | |
| 2025 | if (!local_err) { |
| 2026 | state->prepared = true; |
| 2027 | } else { |
| 2028 | error_propagate(errp, local_err); |
| 2029 | } |
| 2030 | } |
| 2031 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2032 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2033 | { |
| 2034 | BlockDirtyBitmapAdd *action; |
| 2035 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2036 | common, common); |
| 2037 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2038 | action = common->action->u.block_dirty_bitmap_add; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2039 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
| 2040 | * then the node reference and bitmap name must have been valid. |
| 2041 | */ |
| 2042 | if (state->prepared) { |
| 2043 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); |
| 2044 | } |
| 2045 | } |
| 2046 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2047 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2048 | Error **errp) |
| 2049 | { |
| 2050 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2051 | common, common); |
| 2052 | BlockDirtyBitmap *action; |
| 2053 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2054 | if (action_check_completion_mode(common, errp) < 0) { |
| 2055 | return; |
| 2056 | } |
| 2057 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2058 | action = common->action->u.block_dirty_bitmap_clear; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2059 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2060 | action->name, |
| 2061 | &state->bs, |
| 2062 | &state->aio_context, |
| 2063 | errp); |
| 2064 | if (!state->bitmap) { |
| 2065 | return; |
| 2066 | } |
| 2067 | |
| 2068 | if (bdrv_dirty_bitmap_frozen(state->bitmap)) { |
| 2069 | error_setg(errp, "Cannot modify a frozen bitmap"); |
| 2070 | return; |
| 2071 | } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) { |
| 2072 | error_setg(errp, "Cannot clear a disabled bitmap"); |
| 2073 | return; |
| 2074 | } |
| 2075 | |
| 2076 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); |
| 2077 | /* AioContext is released in .clean() */ |
| 2078 | } |
| 2079 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2080 | static void block_dirty_bitmap_clear_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2081 | { |
| 2082 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2083 | common, common); |
| 2084 | |
| 2085 | bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup); |
| 2086 | } |
| 2087 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2088 | static void block_dirty_bitmap_clear_commit(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2089 | { |
| 2090 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2091 | common, common); |
| 2092 | |
| 2093 | hbitmap_free(state->backup); |
| 2094 | } |
| 2095 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2096 | static void block_dirty_bitmap_clear_clean(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2097 | { |
| 2098 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2099 | common, common); |
| 2100 | |
| 2101 | if (state->aio_context) { |
| 2102 | aio_context_release(state->aio_context); |
| 2103 | } |
| 2104 | } |
| 2105 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2106 | static void abort_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2107 | { |
| 2108 | error_setg(errp, "Transaction aborted using Abort action"); |
| 2109 | } |
| 2110 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2111 | static void abort_commit(BlkActionState *common) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2112 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 2113 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2114 | } |
| 2115 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2116 | static const BlkActionOps actions[] = { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2117 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
| 2118 | .instance_size = sizeof(ExternalSnapshotState), |
| 2119 | .prepare = external_snapshot_prepare, |
| 2120 | .commit = external_snapshot_commit, |
| 2121 | .abort = external_snapshot_abort, |
Alberto Garcia | 4ad6f3d | 2015-11-13 15:00:24 +0200 | [diff] [blame] | 2122 | .clean = external_snapshot_clean, |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2123 | }, |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2124 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2125 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2126 | .prepare = external_snapshot_prepare, |
| 2127 | .commit = external_snapshot_commit, |
| 2128 | .abort = external_snapshot_abort, |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 2129 | .clean = external_snapshot_clean, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2130 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2131 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 2132 | .instance_size = sizeof(DriveBackupState), |
| 2133 | .prepare = drive_backup_prepare, |
| 2134 | .abort = drive_backup_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2135 | .clean = drive_backup_clean, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2136 | }, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2137 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
| 2138 | .instance_size = sizeof(BlockdevBackupState), |
| 2139 | .prepare = blockdev_backup_prepare, |
| 2140 | .abort = blockdev_backup_abort, |
| 2141 | .clean = blockdev_backup_clean, |
| 2142 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2143 | [TRANSACTION_ACTION_KIND_ABORT] = { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2144 | .instance_size = sizeof(BlkActionState), |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2145 | .prepare = abort_prepare, |
| 2146 | .commit = abort_commit, |
| 2147 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2148 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 2149 | .instance_size = sizeof(InternalSnapshotState), |
| 2150 | .prepare = internal_snapshot_prepare, |
| 2151 | .abort = internal_snapshot_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2152 | .clean = internal_snapshot_clean, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2153 | }, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2154 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
| 2155 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2156 | .prepare = block_dirty_bitmap_add_prepare, |
| 2157 | .abort = block_dirty_bitmap_add_abort, |
| 2158 | }, |
| 2159 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { |
| 2160 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2161 | .prepare = block_dirty_bitmap_clear_prepare, |
| 2162 | .commit = block_dirty_bitmap_clear_commit, |
| 2163 | .abort = block_dirty_bitmap_clear_abort, |
| 2164 | .clean = block_dirty_bitmap_clear_clean, |
| 2165 | } |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2166 | }; |
| 2167 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2168 | /** |
| 2169 | * Allocate a TransactionProperties structure if necessary, and fill |
| 2170 | * that structure with desired defaults if they are unset. |
| 2171 | */ |
| 2172 | static TransactionProperties *get_transaction_properties( |
| 2173 | TransactionProperties *props) |
| 2174 | { |
| 2175 | if (!props) { |
| 2176 | props = g_new0(TransactionProperties, 1); |
| 2177 | } |
| 2178 | |
| 2179 | if (!props->has_completion_mode) { |
| 2180 | props->has_completion_mode = true; |
| 2181 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; |
| 2182 | } |
| 2183 | |
| 2184 | return props; |
| 2185 | } |
| 2186 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2187 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2188 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 2189 | * any fail then we roll back all operations in the group. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2190 | */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2191 | void qmp_transaction(TransactionActionList *dev_list, |
| 2192 | bool has_props, |
| 2193 | struct TransactionProperties *props, |
| 2194 | Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2195 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2196 | TransactionActionList *dev_entry = dev_list; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2197 | BlockJobTxn *block_job_txn = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2198 | BlkActionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 2199 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2200 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2201 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2202 | QSIMPLEQ_INIT(&snap_bdrv_states); |
| 2203 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2204 | /* Does this transaction get canceled as a group on failure? |
| 2205 | * If not, we don't really need to make a BlockJobTxn. |
| 2206 | */ |
| 2207 | props = get_transaction_properties(props); |
| 2208 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 2209 | block_job_txn = block_job_txn_new(); |
| 2210 | } |
| 2211 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2212 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2213 | bdrv_drain_all(); |
| 2214 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2215 | /* 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] | 2216 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2217 | TransactionAction *dev_info = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2218 | const BlkActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2219 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2220 | dev_info = dev_entry->value; |
| 2221 | dev_entry = dev_entry->next; |
| 2222 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2223 | assert(dev_info->type < ARRAY_SIZE(actions)); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2224 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2225 | ops = &actions[dev_info->type]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 2226 | assert(ops->instance_size > 0); |
| 2227 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2228 | state = g_malloc0(ops->instance_size); |
| 2229 | state->ops = ops; |
| 2230 | state->action = dev_info; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2231 | state->block_job_txn = block_job_txn; |
| 2232 | state->txn_props = props; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2233 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2234 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2235 | state->ops->prepare(state, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2236 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2237 | error_propagate(errp, local_err); |
| 2238 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2239 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2240 | } |
| 2241 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2242 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 2243 | if (state->ops->commit) { |
| 2244 | state->ops->commit(state); |
| 2245 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2246 | } |
| 2247 | |
| 2248 | /* success */ |
| 2249 | goto exit; |
| 2250 | |
| 2251 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2252 | /* failure, and it is all-or-none; roll back all operations */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2253 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
| 2254 | if (state->ops->abort) { |
| 2255 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2256 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2257 | } |
| 2258 | exit: |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2259 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
| 2260 | if (state->ops->clean) { |
| 2261 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2262 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2263 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2264 | } |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2265 | if (!has_props) { |
| 2266 | qapi_free_TransactionProperties(props); |
| 2267 | } |
| 2268 | block_job_txn_unref(block_job_txn); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2269 | } |
| 2270 | |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 2271 | 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] | 2272 | { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2273 | Error *local_err = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2274 | |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2275 | qmp_blockdev_open_tray(device, has_force, force, &local_err); |
| 2276 | if (local_err) { |
| 2277 | error_propagate(errp, local_err); |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 2278 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2279 | } |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 2280 | |
Max Reitz | 6e0abc2 | 2015-12-11 16:23:05 +0100 | [diff] [blame] | 2281 | qmp_x_blockdev_remove_medium(device, errp); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2282 | } |
| 2283 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2284 | void qmp_block_passwd(bool has_device, const char *device, |
| 2285 | bool has_node_name, const char *node_name, |
| 2286 | const char *password, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2287 | { |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2288 | Error *local_err = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2289 | BlockDriverState *bs; |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2290 | AioContext *aio_context; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2291 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2292 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 2293 | has_node_name ? node_name : NULL, |
| 2294 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2295 | if (local_err) { |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2296 | error_propagate(errp, local_err); |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 2297 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2298 | } |
| 2299 | |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2300 | aio_context = bdrv_get_aio_context(bs); |
| 2301 | aio_context_acquire(aio_context); |
| 2302 | |
Markus Armbruster | 4d2855a | 2015-01-29 10:37:00 +0100 | [diff] [blame] | 2303 | bdrv_add_key(bs, password, errp); |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2304 | |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2305 | aio_context_release(aio_context); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2306 | } |
| 2307 | |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2308 | void qmp_blockdev_open_tray(const char *device, bool has_force, bool force, |
| 2309 | Error **errp) |
| 2310 | { |
| 2311 | BlockBackend *blk; |
| 2312 | bool locked; |
| 2313 | |
| 2314 | if (!has_force) { |
| 2315 | force = false; |
| 2316 | } |
| 2317 | |
| 2318 | blk = blk_by_name(device); |
| 2319 | if (!blk) { |
| 2320 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2321 | "Device '%s' not found", device); |
| 2322 | return; |
| 2323 | } |
| 2324 | |
| 2325 | if (!blk_dev_has_removable_media(blk)) { |
| 2326 | error_setg(errp, "Device '%s' is not removable", device); |
| 2327 | return; |
| 2328 | } |
| 2329 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2330 | if (!blk_dev_has_tray(blk)) { |
| 2331 | /* Ignore this command on tray-less devices */ |
| 2332 | return; |
| 2333 | } |
| 2334 | |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2335 | if (blk_dev_is_tray_open(blk)) { |
| 2336 | return; |
| 2337 | } |
| 2338 | |
| 2339 | locked = blk_dev_is_medium_locked(blk); |
| 2340 | if (locked) { |
| 2341 | blk_dev_eject_request(blk, force); |
| 2342 | } |
| 2343 | |
| 2344 | if (!locked || force) { |
| 2345 | blk_dev_change_media_cb(blk, false); |
| 2346 | } |
| 2347 | } |
| 2348 | |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2349 | void qmp_blockdev_close_tray(const char *device, Error **errp) |
| 2350 | { |
| 2351 | BlockBackend *blk; |
| 2352 | |
| 2353 | blk = blk_by_name(device); |
| 2354 | if (!blk) { |
| 2355 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2356 | "Device '%s' not found", device); |
| 2357 | return; |
| 2358 | } |
| 2359 | |
| 2360 | if (!blk_dev_has_removable_media(blk)) { |
| 2361 | error_setg(errp, "Device '%s' is not removable", device); |
| 2362 | return; |
| 2363 | } |
| 2364 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2365 | if (!blk_dev_has_tray(blk)) { |
| 2366 | /* Ignore this command on tray-less devices */ |
| 2367 | return; |
| 2368 | } |
| 2369 | |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2370 | if (!blk_dev_is_tray_open(blk)) { |
| 2371 | return; |
| 2372 | } |
| 2373 | |
| 2374 | blk_dev_change_media_cb(blk, true); |
| 2375 | } |
| 2376 | |
Max Reitz | 6e0abc2 | 2015-12-11 16:23:05 +0100 | [diff] [blame] | 2377 | void qmp_x_blockdev_remove_medium(const char *device, Error **errp) |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2378 | { |
| 2379 | BlockBackend *blk; |
| 2380 | BlockDriverState *bs; |
| 2381 | AioContext *aio_context; |
| 2382 | bool has_device; |
| 2383 | |
| 2384 | blk = blk_by_name(device); |
| 2385 | if (!blk) { |
| 2386 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2387 | "Device '%s' not found", device); |
| 2388 | return; |
| 2389 | } |
| 2390 | |
| 2391 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2392 | has_device = blk_get_attached_dev(blk); |
| 2393 | |
| 2394 | if (has_device && !blk_dev_has_removable_media(blk)) { |
| 2395 | error_setg(errp, "Device '%s' is not removable", device); |
| 2396 | return; |
| 2397 | } |
| 2398 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2399 | 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] | 2400 | error_setg(errp, "Tray of device '%s' is not open", device); |
| 2401 | return; |
| 2402 | } |
| 2403 | |
| 2404 | bs = blk_bs(blk); |
| 2405 | if (!bs) { |
| 2406 | return; |
| 2407 | } |
| 2408 | |
| 2409 | aio_context = bdrv_get_aio_context(bs); |
| 2410 | aio_context_acquire(aio_context); |
| 2411 | |
| 2412 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
| 2413 | goto out; |
| 2414 | } |
| 2415 | |
| 2416 | /* This follows the convention established by bdrv_make_anon() */ |
| 2417 | if (bs->device_list.tqe_prev) { |
Jeff Cody | f8aa905 | 2016-02-01 20:33:10 -0500 | [diff] [blame] | 2418 | bdrv_device_remove(bs); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2419 | } |
| 2420 | |
| 2421 | blk_remove_bs(blk); |
| 2422 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2423 | if (!blk_dev_has_tray(blk)) { |
| 2424 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be |
| 2425 | * called at all); therefore, the medium needs to be ejected here. |
| 2426 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load |
| 2427 | * value passed here (i.e. false). */ |
| 2428 | blk_dev_change_media_cb(blk, false); |
| 2429 | } |
| 2430 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2431 | out: |
| 2432 | aio_context_release(aio_context); |
| 2433 | } |
| 2434 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2435 | static void qmp_blockdev_insert_anon_medium(const char *device, |
| 2436 | BlockDriverState *bs, Error **errp) |
| 2437 | { |
| 2438 | BlockBackend *blk; |
| 2439 | bool has_device; |
| 2440 | |
| 2441 | blk = blk_by_name(device); |
| 2442 | if (!blk) { |
| 2443 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2444 | "Device '%s' not found", device); |
| 2445 | return; |
| 2446 | } |
| 2447 | |
| 2448 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2449 | has_device = blk_get_attached_dev(blk); |
| 2450 | |
| 2451 | if (has_device && !blk_dev_has_removable_media(blk)) { |
| 2452 | error_setg(errp, "Device '%s' is not removable", device); |
| 2453 | return; |
| 2454 | } |
| 2455 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2456 | 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] | 2457 | error_setg(errp, "Tray of device '%s' is not open", device); |
| 2458 | return; |
| 2459 | } |
| 2460 | |
| 2461 | if (blk_bs(blk)) { |
| 2462 | error_setg(errp, "There already is a medium in device '%s'", device); |
| 2463 | return; |
| 2464 | } |
| 2465 | |
| 2466 | blk_insert_bs(blk, bs); |
| 2467 | |
| 2468 | QTAILQ_INSERT_TAIL(&bdrv_states, bs, device_list); |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2469 | |
| 2470 | if (!blk_dev_has_tray(blk)) { |
| 2471 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be |
| 2472 | * called at all); therefore, the medium needs to be pushed into the |
| 2473 | * slot here. |
| 2474 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load |
| 2475 | * value passed here (i.e. true). */ |
| 2476 | blk_dev_change_media_cb(blk, true); |
| 2477 | } |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2478 | } |
| 2479 | |
Max Reitz | 6e0abc2 | 2015-12-11 16:23:05 +0100 | [diff] [blame] | 2480 | void qmp_x_blockdev_insert_medium(const char *device, const char *node_name, |
| 2481 | Error **errp) |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2482 | { |
| 2483 | BlockDriverState *bs; |
| 2484 | |
| 2485 | bs = bdrv_find_node(node_name); |
| 2486 | if (!bs) { |
| 2487 | error_setg(errp, "Node '%s' not found", node_name); |
| 2488 | return; |
| 2489 | } |
| 2490 | |
| 2491 | if (bs->blk) { |
| 2492 | error_setg(errp, "Node '%s' is already in use by '%s'", node_name, |
| 2493 | blk_name(bs->blk)); |
| 2494 | return; |
| 2495 | } |
| 2496 | |
| 2497 | qmp_blockdev_insert_anon_medium(device, bs, errp); |
| 2498 | } |
| 2499 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2500 | void qmp_blockdev_change_medium(const char *device, const char *filename, |
| 2501 | bool has_format, const char *format, |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2502 | bool has_read_only, |
| 2503 | BlockdevChangeReadOnlyMode read_only, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2504 | Error **errp) |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2505 | { |
| 2506 | BlockBackend *blk; |
| 2507 | BlockDriverState *medium_bs = NULL; |
| 2508 | int bdrv_flags, ret; |
| 2509 | QDict *options = NULL; |
| 2510 | Error *err = NULL; |
| 2511 | |
| 2512 | blk = blk_by_name(device); |
| 2513 | if (!blk) { |
| 2514 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2515 | "Device '%s' not found", device); |
| 2516 | goto fail; |
| 2517 | } |
| 2518 | |
| 2519 | if (blk_bs(blk)) { |
| 2520 | blk_update_root_state(blk); |
| 2521 | } |
| 2522 | |
| 2523 | bdrv_flags = blk_get_open_flags_from_root_state(blk); |
Alyssa Milburn | 156abc2 | 2016-02-06 13:36:18 +0000 | [diff] [blame] | 2524 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
| 2525 | BDRV_O_PROTOCOL); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2526 | |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2527 | if (!has_read_only) { |
| 2528 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; |
| 2529 | } |
| 2530 | |
| 2531 | switch (read_only) { |
| 2532 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: |
| 2533 | break; |
| 2534 | |
| 2535 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: |
| 2536 | bdrv_flags &= ~BDRV_O_RDWR; |
| 2537 | break; |
| 2538 | |
| 2539 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: |
| 2540 | bdrv_flags |= BDRV_O_RDWR; |
| 2541 | break; |
| 2542 | |
| 2543 | default: |
| 2544 | abort(); |
| 2545 | } |
| 2546 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2547 | if (has_format) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2548 | options = qdict_new(); |
| 2549 | qdict_put(options, "driver", qstring_from_str(format)); |
| 2550 | } |
| 2551 | |
| 2552 | assert(!medium_bs); |
| 2553 | ret = bdrv_open(&medium_bs, filename, NULL, options, bdrv_flags, errp); |
| 2554 | if (ret < 0) { |
| 2555 | goto fail; |
| 2556 | } |
| 2557 | |
| 2558 | blk_apply_root_state(blk, medium_bs); |
| 2559 | |
| 2560 | bdrv_add_key(medium_bs, NULL, &err); |
| 2561 | if (err) { |
| 2562 | error_propagate(errp, err); |
| 2563 | goto fail; |
| 2564 | } |
| 2565 | |
| 2566 | qmp_blockdev_open_tray(device, false, false, &err); |
| 2567 | if (err) { |
| 2568 | error_propagate(errp, err); |
| 2569 | goto fail; |
| 2570 | } |
| 2571 | |
Max Reitz | 6e0abc2 | 2015-12-11 16:23:05 +0100 | [diff] [blame] | 2572 | qmp_x_blockdev_remove_medium(device, &err); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2573 | if (err) { |
| 2574 | error_propagate(errp, err); |
| 2575 | goto fail; |
| 2576 | } |
| 2577 | |
| 2578 | qmp_blockdev_insert_anon_medium(device, medium_bs, &err); |
| 2579 | if (err) { |
| 2580 | error_propagate(errp, err); |
| 2581 | goto fail; |
| 2582 | } |
| 2583 | |
| 2584 | qmp_blockdev_close_tray(device, errp); |
| 2585 | |
| 2586 | fail: |
| 2587 | /* If the medium has been inserted, the device has its own reference, so |
| 2588 | * ours must be relinquished; and if it has not been inserted successfully, |
| 2589 | * the reference must be relinquished anyway */ |
| 2590 | bdrv_unref(medium_bs); |
| 2591 | } |
| 2592 | |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2593 | /* throttling disk I/O limits */ |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2594 | 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] | 2595 | int64_t bps_wr, |
| 2596 | int64_t iops, |
| 2597 | int64_t iops_rd, |
| 2598 | int64_t iops_wr, |
| 2599 | bool has_bps_max, |
| 2600 | int64_t bps_max, |
| 2601 | bool has_bps_rd_max, |
| 2602 | int64_t bps_rd_max, |
| 2603 | bool has_bps_wr_max, |
| 2604 | int64_t bps_wr_max, |
| 2605 | bool has_iops_max, |
| 2606 | int64_t iops_max, |
| 2607 | bool has_iops_rd_max, |
| 2608 | int64_t iops_rd_max, |
| 2609 | bool has_iops_wr_max, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2610 | int64_t iops_wr_max, |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2611 | bool has_bps_max_length, |
| 2612 | int64_t bps_max_length, |
| 2613 | bool has_bps_rd_max_length, |
| 2614 | int64_t bps_rd_max_length, |
| 2615 | bool has_bps_wr_max_length, |
| 2616 | int64_t bps_wr_max_length, |
| 2617 | bool has_iops_max_length, |
| 2618 | int64_t iops_max_length, |
| 2619 | bool has_iops_rd_max_length, |
| 2620 | int64_t iops_rd_max_length, |
| 2621 | bool has_iops_wr_max_length, |
| 2622 | int64_t iops_wr_max_length, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2623 | bool has_iops_size, |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2624 | int64_t iops_size, |
| 2625 | bool has_group, |
| 2626 | const char *group, Error **errp) |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2627 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2628 | ThrottleConfig cfg; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2629 | BlockDriverState *bs; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2630 | BlockBackend *blk; |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2631 | AioContext *aio_context; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2632 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2633 | blk = blk_by_name(device); |
| 2634 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 2635 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2636 | "Device '%s' not found", device); |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2637 | return; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2638 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2639 | |
| 2640 | aio_context = blk_get_aio_context(blk); |
| 2641 | aio_context_acquire(aio_context); |
| 2642 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2643 | bs = blk_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2644 | if (!bs) { |
| 2645 | error_setg(errp, "Device '%s' has no medium", device); |
| 2646 | goto out; |
| 2647 | } |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2648 | |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 2649 | throttle_config_init(&cfg); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2650 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; |
| 2651 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; |
| 2652 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2653 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2654 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; |
| 2655 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; |
| 2656 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; |
| 2657 | |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2658 | if (has_bps_max) { |
| 2659 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; |
| 2660 | } |
| 2661 | if (has_bps_rd_max) { |
| 2662 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; |
| 2663 | } |
| 2664 | if (has_bps_wr_max) { |
| 2665 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; |
| 2666 | } |
| 2667 | if (has_iops_max) { |
| 2668 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; |
| 2669 | } |
| 2670 | if (has_iops_rd_max) { |
| 2671 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; |
| 2672 | } |
| 2673 | if (has_iops_wr_max) { |
| 2674 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; |
| 2675 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2676 | |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2677 | if (has_bps_max_length) { |
| 2678 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = bps_max_length; |
| 2679 | } |
| 2680 | if (has_bps_rd_max_length) { |
| 2681 | cfg.buckets[THROTTLE_BPS_READ].burst_length = bps_rd_max_length; |
| 2682 | } |
| 2683 | if (has_bps_wr_max_length) { |
| 2684 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = bps_wr_max_length; |
| 2685 | } |
| 2686 | if (has_iops_max_length) { |
| 2687 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = iops_max_length; |
| 2688 | } |
| 2689 | if (has_iops_rd_max_length) { |
| 2690 | cfg.buckets[THROTTLE_OPS_READ].burst_length = iops_rd_max_length; |
| 2691 | } |
| 2692 | if (has_iops_wr_max_length) { |
| 2693 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = iops_wr_max_length; |
| 2694 | } |
| 2695 | |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2696 | if (has_iops_size) { |
| 2697 | cfg.op_size = iops_size; |
| 2698 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2699 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 2700 | if (!throttle_is_valid(&cfg, errp)) { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2701 | goto out; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2702 | } |
| 2703 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2704 | if (throttle_enabled(&cfg)) { |
| 2705 | /* Enable I/O limits if they're not enabled yet, otherwise |
| 2706 | * just update the throttling group. */ |
Alberto Garcia | a0d64a6 | 2015-11-04 15:15:36 +0200 | [diff] [blame] | 2707 | if (!bs->throttle_state) { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2708 | bdrv_io_limits_enable(bs, has_group ? group : device); |
| 2709 | } else if (has_group) { |
| 2710 | bdrv_io_limits_update_group(bs, group); |
| 2711 | } |
| 2712 | /* Set the new throttling configuration */ |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2713 | bdrv_set_io_limits(bs, &cfg); |
Alberto Garcia | a0d64a6 | 2015-11-04 15:15:36 +0200 | [diff] [blame] | 2714 | } else if (bs->throttle_state) { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2715 | /* If all throttling settings are set to 0, disable I/O limits */ |
| 2716 | bdrv_io_limits_disable(bs); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2717 | } |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2718 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2719 | out: |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2720 | aio_context_release(aio_context); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2721 | } |
| 2722 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2723 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
| 2724 | bool has_granularity, uint32_t granularity, |
| 2725 | Error **errp) |
| 2726 | { |
| 2727 | AioContext *aio_context; |
| 2728 | BlockDriverState *bs; |
| 2729 | |
| 2730 | if (!name || name[0] == '\0') { |
| 2731 | error_setg(errp, "Bitmap name cannot be empty"); |
| 2732 | return; |
| 2733 | } |
| 2734 | |
| 2735 | bs = bdrv_lookup_bs(node, node, errp); |
| 2736 | if (!bs) { |
| 2737 | return; |
| 2738 | } |
| 2739 | |
| 2740 | aio_context = bdrv_get_aio_context(bs); |
| 2741 | aio_context_acquire(aio_context); |
| 2742 | |
| 2743 | if (has_granularity) { |
| 2744 | if (granularity < 512 || !is_power_of_2(granularity)) { |
| 2745 | error_setg(errp, "Granularity must be power of 2 " |
| 2746 | "and at least 512"); |
| 2747 | goto out; |
| 2748 | } |
| 2749 | } else { |
| 2750 | /* Default to cluster size, if available: */ |
| 2751 | granularity = bdrv_get_default_bitmap_granularity(bs); |
| 2752 | } |
| 2753 | |
| 2754 | bdrv_create_dirty_bitmap(bs, granularity, name, errp); |
| 2755 | |
| 2756 | out: |
| 2757 | aio_context_release(aio_context); |
| 2758 | } |
| 2759 | |
| 2760 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, |
| 2761 | Error **errp) |
| 2762 | { |
| 2763 | AioContext *aio_context; |
| 2764 | BlockDriverState *bs; |
| 2765 | BdrvDirtyBitmap *bitmap; |
| 2766 | |
| 2767 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); |
| 2768 | if (!bitmap || !bs) { |
| 2769 | return; |
| 2770 | } |
| 2771 | |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2772 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2773 | error_setg(errp, |
| 2774 | "Bitmap '%s' is currently frozen and cannot be removed", |
| 2775 | name); |
| 2776 | goto out; |
| 2777 | } |
John Snow | 20dca81 | 2015-04-17 19:50:02 -0400 | [diff] [blame] | 2778 | bdrv_dirty_bitmap_make_anon(bitmap); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2779 | bdrv_release_dirty_bitmap(bs, bitmap); |
| 2780 | |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2781 | out: |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2782 | aio_context_release(aio_context); |
| 2783 | } |
| 2784 | |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2785 | /** |
| 2786 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap |
| 2787 | * immediately after a full backup operation. |
| 2788 | */ |
| 2789 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, |
| 2790 | Error **errp) |
| 2791 | { |
| 2792 | AioContext *aio_context; |
| 2793 | BdrvDirtyBitmap *bitmap; |
| 2794 | BlockDriverState *bs; |
| 2795 | |
| 2796 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); |
| 2797 | if (!bitmap || !bs) { |
| 2798 | return; |
| 2799 | } |
| 2800 | |
| 2801 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2802 | error_setg(errp, |
| 2803 | "Bitmap '%s' is currently frozen and cannot be modified", |
| 2804 | name); |
| 2805 | goto out; |
| 2806 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { |
| 2807 | error_setg(errp, |
| 2808 | "Bitmap '%s' is currently disabled and cannot be cleared", |
| 2809 | name); |
| 2810 | goto out; |
| 2811 | } |
| 2812 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2813 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2814 | |
| 2815 | out: |
| 2816 | aio_context_release(aio_context); |
| 2817 | } |
| 2818 | |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2819 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2820 | { |
| 2821 | const char *id = qdict_get_str(qdict, "id"); |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 2822 | BlockBackend *blk; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2823 | BlockDriverState *bs; |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2824 | AioContext *aio_context; |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 2825 | Error *local_err = NULL; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2826 | |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 2827 | blk = blk_by_name(id); |
| 2828 | if (!blk) { |
Markus Armbruster | b1422f2 | 2014-05-16 11:00:09 +0200 | [diff] [blame] | 2829 | error_report("Device '%s' not found", id); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2830 | return; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2831 | } |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2832 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 2833 | if (!blk_legacy_dinfo(blk)) { |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 2834 | error_report("Deleting device added with blockdev-add" |
| 2835 | " is not supported"); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2836 | return; |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 2837 | } |
| 2838 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2839 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2840 | aio_context_acquire(aio_context); |
| 2841 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2842 | bs = blk_bs(blk); |
| 2843 | if (bs) { |
| 2844 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
| 2845 | error_report_err(local_err); |
| 2846 | aio_context_release(aio_context); |
| 2847 | return; |
| 2848 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2849 | |
Max Reitz | 938abd4 | 2016-01-29 16:36:09 +0100 | [diff] [blame] | 2850 | blk_remove_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2851 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2852 | |
Markus Armbruster | fa879d6 | 2011-08-03 15:07:40 +0200 | [diff] [blame] | 2853 | /* if we have a device attached to this BlockDriverState |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 2854 | * then we need to make the drive anonymous until the device |
| 2855 | * can be removed. If this is a drive with no device backing |
| 2856 | * then we can just get rid of the block driver state right here. |
| 2857 | */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 2858 | if (blk_get_attached_dev(blk)) { |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame] | 2859 | blk_hide_on_behalf_of_hmp_drive_del(blk); |
Stefan Hajnoczi | 293c51a | 2013-06-05 10:33:14 +0200 | [diff] [blame] | 2860 | /* Further I/O must not pause the guest */ |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 2861 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
| 2862 | BLOCKDEV_ON_ERROR_REPORT); |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 2863 | } else { |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 2864 | blk_unref(blk); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2865 | } |
| 2866 | |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2867 | aio_context_release(aio_context); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2868 | } |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2869 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2870 | void qmp_block_resize(bool has_device, const char *device, |
| 2871 | bool has_node_name, const char *node_name, |
| 2872 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2873 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2874 | Error *local_err = NULL; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2875 | BlockDriverState *bs; |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2876 | AioContext *aio_context; |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2877 | int ret; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2878 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2879 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 2880 | has_node_name ? node_name : NULL, |
| 2881 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2882 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2883 | error_propagate(errp, local_err); |
| 2884 | return; |
| 2885 | } |
| 2886 | |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2887 | aio_context = bdrv_get_aio_context(bs); |
| 2888 | aio_context_acquire(aio_context); |
| 2889 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2890 | if (!bdrv_is_first_non_filter(bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2891 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2892 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2893 | } |
| 2894 | |
| 2895 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2896 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2897 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2898 | } |
| 2899 | |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2900 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2901 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2902 | goto out; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2903 | } |
| 2904 | |
Peter Lieven | 92b7a08 | 2013-03-11 11:04:24 +0100 | [diff] [blame] | 2905 | /* complete all in-flight operations before resizing the device */ |
| 2906 | bdrv_drain_all(); |
| 2907 | |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2908 | ret = bdrv_truncate(bs, size); |
| 2909 | switch (ret) { |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2910 | case 0: |
| 2911 | break; |
| 2912 | case -ENOMEDIUM: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2913 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2914 | break; |
| 2915 | case -ENOTSUP: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2916 | error_setg(errp, QERR_UNSUPPORTED); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2917 | break; |
| 2918 | case -EACCES: |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 2919 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2920 | break; |
| 2921 | case -EBUSY: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2922 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2923 | break; |
| 2924 | default: |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2925 | error_setg_errno(errp, -ret, "Could not resize"); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2926 | break; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2927 | } |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2928 | |
| 2929 | out: |
| 2930 | aio_context_release(aio_context); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2931 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2932 | |
Jeff Cody | 9abf2db | 2012-09-27 13:29:14 -0400 | [diff] [blame] | 2933 | static void block_job_cb(void *opaque, int ret) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2934 | { |
Stefan Hajnoczi | 723c5d9 | 2014-10-21 12:03:53 +0100 | [diff] [blame] | 2935 | /* Note that this function may be executed from another AioContext besides |
| 2936 | * the QEMU main loop. If you need to access anything that assumes the |
| 2937 | * QEMU global mutex, use a BH or introduce a mutex. |
| 2938 | */ |
| 2939 | |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2940 | BlockDriverState *bs = opaque; |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2941 | const char *msg = NULL; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2942 | |
Jeff Cody | 9abf2db | 2012-09-27 13:29:14 -0400 | [diff] [blame] | 2943 | trace_block_job_cb(bs, bs->job, ret); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2944 | |
| 2945 | assert(bs->job); |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2946 | |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2947 | if (ret < 0) { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2948 | msg = strerror(-ret); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2949 | } |
| 2950 | |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2951 | if (block_job_is_cancelled(bs->job)) { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2952 | block_job_event_cancelled(bs->job); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2953 | } else { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2954 | block_job_event_completed(bs->job, msg); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2955 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2956 | } |
| 2957 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2958 | void qmp_block_stream(const char *device, |
| 2959 | bool has_base, const char *base, |
| 2960 | bool has_backing_file, const char *backing_file, |
| 2961 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2962 | bool has_on_error, BlockdevOnError on_error, |
| 2963 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2964 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2965 | BlockBackend *blk; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2966 | BlockDriverState *bs; |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2967 | BlockDriverState *base_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2968 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2969 | Error *local_err = NULL; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2970 | const char *base_name = NULL; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2971 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2972 | if (!has_on_error) { |
| 2973 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2974 | } |
| 2975 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2976 | blk = blk_by_name(device); |
| 2977 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 2978 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2979 | "Device '%s' not found", device); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2980 | return; |
| 2981 | } |
| 2982 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2983 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2984 | aio_context_acquire(aio_context); |
| 2985 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2986 | if (!blk_is_available(blk)) { |
| 2987 | error_setg(errp, "Device '%s' has no medium", device); |
| 2988 | goto out; |
| 2989 | } |
| 2990 | bs = blk_bs(blk); |
| 2991 | |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 2992 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2993 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 2994 | } |
| 2995 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2996 | if (has_base) { |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2997 | base_bs = bdrv_find_backing_image(bs, base); |
| 2998 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2999 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3000 | goto out; |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3001 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3002 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3003 | base_name = base; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3004 | } |
| 3005 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3006 | /* if we are streaming the entire chain, the result will have no backing |
| 3007 | * file, and specifying one is therefore an error */ |
| 3008 | if (base_bs == NULL && has_backing_file) { |
| 3009 | error_setg(errp, "backing file specified, but streaming the " |
| 3010 | "entire chain"); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3011 | goto out; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3012 | } |
| 3013 | |
| 3014 | /* backing_file string overrides base bs filename */ |
| 3015 | base_name = has_backing_file ? backing_file : base_name; |
| 3016 | |
| 3017 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3018 | on_error, block_job_cb, bs, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3019 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3020 | error_propagate(errp, local_err); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3021 | goto out; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3022 | } |
| 3023 | |
| 3024 | trace_qmp_block_stream(bs, bs->job); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3025 | |
| 3026 | out: |
| 3027 | aio_context_release(aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3028 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3029 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3030 | void qmp_block_commit(const char *device, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3031 | bool has_base, const char *base, |
| 3032 | bool has_top, const char *top, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3033 | bool has_backing_file, const char *backing_file, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3034 | bool has_speed, int64_t speed, |
| 3035 | Error **errp) |
| 3036 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3037 | BlockBackend *blk; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3038 | BlockDriverState *bs; |
| 3039 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3040 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3041 | Error *local_err = NULL; |
| 3042 | /* This will be part of the QMP command, if/when the |
| 3043 | * BlockdevOnError change for blkmirror makes it in |
| 3044 | */ |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 3045 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3046 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 3047 | if (!has_speed) { |
| 3048 | speed = 0; |
| 3049 | } |
| 3050 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3051 | /* Important Note: |
| 3052 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 3053 | * live commit feature versions; for this to work, we must make sure to |
| 3054 | * perform the device lookup before any generic errors that may occur in a |
| 3055 | * scenario in which all optional arguments are omitted. */ |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3056 | blk = blk_by_name(device); |
| 3057 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3058 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3059 | "Device '%s' not found", device); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3060 | return; |
| 3061 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3062 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3063 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3064 | aio_context_acquire(aio_context); |
| 3065 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3066 | if (!blk_is_available(blk)) { |
| 3067 | error_setg(errp, "Device '%s' has no medium", device); |
| 3068 | goto out; |
| 3069 | } |
| 3070 | bs = blk_bs(blk); |
| 3071 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3072 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3073 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 3074 | } |
| 3075 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3076 | /* default top_bs is the active layer */ |
| 3077 | top_bs = bs; |
| 3078 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3079 | if (has_top && top) { |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3080 | if (strcmp(bs->filename, top) != 0) { |
| 3081 | top_bs = bdrv_find_backing_image(bs, top); |
| 3082 | } |
| 3083 | } |
| 3084 | |
| 3085 | if (top_bs == NULL) { |
| 3086 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3087 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3088 | } |
| 3089 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3090 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 3091 | |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3092 | if (has_base && base) { |
| 3093 | base_bs = bdrv_find_backing_image(top_bs, base); |
| 3094 | } else { |
| 3095 | base_bs = bdrv_find_base(top_bs); |
| 3096 | } |
| 3097 | |
| 3098 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3099 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3100 | goto out; |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3101 | } |
| 3102 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3103 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 3104 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3105 | if (bdrv_op_is_blocked(base_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 3106 | goto out; |
| 3107 | } |
| 3108 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3109 | /* Do not allow attempts to commit an image into itself */ |
| 3110 | if (top_bs == base_bs) { |
| 3111 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3112 | goto out; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3113 | } |
| 3114 | |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3115 | if (top_bs == bs) { |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3116 | if (has_backing_file) { |
| 3117 | error_setg(errp, "'backing-file' specified," |
| 3118 | " but 'top' is the active layer"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3119 | goto out; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3120 | } |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3121 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
| 3122 | bs, &local_err); |
| 3123 | } else { |
| 3124 | 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] | 3125 | has_backing_file ? backing_file : NULL, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3126 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3127 | if (local_err != NULL) { |
| 3128 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3129 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3130 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3131 | |
| 3132 | out: |
| 3133 | aio_context_release(aio_context); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3134 | } |
| 3135 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3136 | static void do_drive_backup(const char *device, const char *target, |
| 3137 | bool has_format, const char *format, |
| 3138 | enum MirrorSyncMode sync, |
| 3139 | bool has_mode, enum NewImageMode mode, |
| 3140 | bool has_speed, int64_t speed, |
| 3141 | bool has_bitmap, const char *bitmap, |
| 3142 | bool has_on_source_error, |
| 3143 | BlockdevOnError on_source_error, |
| 3144 | bool has_on_target_error, |
| 3145 | BlockdevOnError on_target_error, |
| 3146 | BlockJobTxn *txn, Error **errp) |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3147 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3148 | BlockBackend *blk; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3149 | BlockDriverState *bs; |
| 3150 | BlockDriverState *target_bs; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3151 | BlockDriverState *source = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3152 | BdrvDirtyBitmap *bmap = NULL; |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3153 | AioContext *aio_context; |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3154 | QDict *options = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3155 | Error *local_err = NULL; |
| 3156 | int flags; |
| 3157 | int64_t size; |
| 3158 | int ret; |
| 3159 | |
| 3160 | if (!has_speed) { |
| 3161 | speed = 0; |
| 3162 | } |
| 3163 | if (!has_on_source_error) { |
| 3164 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3165 | } |
| 3166 | if (!has_on_target_error) { |
| 3167 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3168 | } |
| 3169 | if (!has_mode) { |
| 3170 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 3171 | } |
| 3172 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3173 | blk = blk_by_name(device); |
| 3174 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3175 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3176 | "Device '%s' not found", device); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3177 | return; |
| 3178 | } |
| 3179 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3180 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3181 | aio_context_acquire(aio_context); |
| 3182 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3183 | /* Although backup_run has this check too, we need to use bs->drv below, so |
| 3184 | * do an early check redundantly. */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3185 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3186 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3187 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3188 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3189 | bs = blk_bs(blk); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3190 | |
| 3191 | if (!has_format) { |
| 3192 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; |
| 3193 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3194 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3195 | /* Early check to avoid creating target */ |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 3196 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3197 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3198 | } |
| 3199 | |
| 3200 | flags = bs->open_flags | BDRV_O_RDWR; |
| 3201 | |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3202 | /* See if we have a backing HD we can use to create our new image |
| 3203 | * on top of. */ |
| 3204 | if (sync == MIRROR_SYNC_MODE_TOP) { |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3205 | source = backing_bs(bs); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3206 | if (!source) { |
| 3207 | sync = MIRROR_SYNC_MODE_FULL; |
| 3208 | } |
| 3209 | } |
| 3210 | if (sync == MIRROR_SYNC_MODE_NONE) { |
| 3211 | source = bs; |
| 3212 | } |
| 3213 | |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3214 | size = bdrv_getlength(bs); |
| 3215 | if (size < 0) { |
| 3216 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3217 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3218 | } |
| 3219 | |
| 3220 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3221 | assert(format); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3222 | if (source) { |
| 3223 | bdrv_img_create(target, format, source->filename, |
| 3224 | source->drv->format_name, NULL, |
| 3225 | size, flags, &local_err, false); |
| 3226 | } else { |
| 3227 | bdrv_img_create(target, format, NULL, NULL, NULL, |
| 3228 | size, flags, &local_err, false); |
| 3229 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3230 | } |
| 3231 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3232 | if (local_err) { |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3233 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3234 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3235 | } |
| 3236 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3237 | if (format) { |
| 3238 | options = qdict_new(); |
| 3239 | qdict_put(options, "driver", qstring_from_str(format)); |
| 3240 | } |
| 3241 | |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 3242 | target_bs = NULL; |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 3243 | ret = bdrv_open(&target_bs, target, NULL, options, flags, &local_err); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3244 | if (ret < 0) { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 3245 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3246 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3247 | } |
| 3248 | |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3249 | bdrv_set_aio_context(target_bs, aio_context); |
| 3250 | |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3251 | if (has_bitmap) { |
| 3252 | bmap = bdrv_find_dirty_bitmap(bs, bitmap); |
| 3253 | if (!bmap) { |
| 3254 | error_setg(errp, "Bitmap '%s' could not be found", bitmap); |
Max Reitz | 0702d3d | 2015-11-09 23:39:10 +0100 | [diff] [blame] | 3255 | bdrv_unref(target_bs); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3256 | goto out; |
| 3257 | } |
| 3258 | } |
| 3259 | |
| 3260 | backup_start(bs, target_bs, speed, sync, bmap, |
| 3261 | on_source_error, on_target_error, |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3262 | block_job_cb, bs, txn, &local_err); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3263 | if (local_err != NULL) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 3264 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3265 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3266 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3267 | } |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3268 | |
| 3269 | out: |
| 3270 | aio_context_release(aio_context); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3271 | } |
| 3272 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3273 | void qmp_drive_backup(const char *device, const char *target, |
| 3274 | bool has_format, const char *format, |
| 3275 | enum MirrorSyncMode sync, |
| 3276 | bool has_mode, enum NewImageMode mode, |
| 3277 | bool has_speed, int64_t speed, |
| 3278 | bool has_bitmap, const char *bitmap, |
| 3279 | bool has_on_source_error, BlockdevOnError on_source_error, |
| 3280 | bool has_on_target_error, BlockdevOnError on_target_error, |
| 3281 | Error **errp) |
| 3282 | { |
| 3283 | return do_drive_backup(device, target, has_format, format, sync, |
| 3284 | has_mode, mode, has_speed, speed, |
| 3285 | has_bitmap, bitmap, |
| 3286 | has_on_source_error, on_source_error, |
| 3287 | has_on_target_error, on_target_error, |
| 3288 | NULL, errp); |
| 3289 | } |
| 3290 | |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3291 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
| 3292 | { |
Alberto Garcia | d5a8ee6 | 2015-04-17 14:52:43 +0300 | [diff] [blame] | 3293 | return bdrv_named_nodes_list(errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3294 | } |
| 3295 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3296 | void do_blockdev_backup(const char *device, const char *target, |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3297 | enum MirrorSyncMode sync, |
| 3298 | bool has_speed, int64_t speed, |
| 3299 | bool has_on_source_error, |
| 3300 | BlockdevOnError on_source_error, |
| 3301 | bool has_on_target_error, |
| 3302 | BlockdevOnError on_target_error, |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3303 | BlockJobTxn *txn, Error **errp) |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3304 | { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3305 | BlockBackend *blk, *target_blk; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3306 | BlockDriverState *bs; |
| 3307 | BlockDriverState *target_bs; |
| 3308 | Error *local_err = NULL; |
| 3309 | AioContext *aio_context; |
| 3310 | |
| 3311 | if (!has_speed) { |
| 3312 | speed = 0; |
| 3313 | } |
| 3314 | if (!has_on_source_error) { |
| 3315 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3316 | } |
| 3317 | if (!has_on_target_error) { |
| 3318 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3319 | } |
| 3320 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3321 | blk = blk_by_name(device); |
| 3322 | if (!blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 3323 | error_setg(errp, "Device '%s' not found", device); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3324 | return; |
| 3325 | } |
| 3326 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3327 | aio_context = blk_get_aio_context(blk); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3328 | aio_context_acquire(aio_context); |
| 3329 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3330 | if (!blk_is_available(blk)) { |
| 3331 | error_setg(errp, "Device '%s' has no medium", device); |
| 3332 | goto out; |
| 3333 | } |
| 3334 | bs = blk_bs(blk); |
| 3335 | |
| 3336 | target_blk = blk_by_name(target); |
| 3337 | if (!target_blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 3338 | error_setg(errp, "Device '%s' not found", target); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3339 | goto out; |
| 3340 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3341 | |
| 3342 | if (!blk_is_available(target_blk)) { |
| 3343 | error_setg(errp, "Device '%s' has no medium", target); |
| 3344 | goto out; |
| 3345 | } |
| 3346 | target_bs = blk_bs(target_blk); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3347 | |
| 3348 | bdrv_ref(target_bs); |
| 3349 | bdrv_set_aio_context(target_bs, aio_context); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3350 | backup_start(bs, target_bs, speed, sync, NULL, on_source_error, |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3351 | on_target_error, block_job_cb, bs, txn, &local_err); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3352 | if (local_err != NULL) { |
| 3353 | bdrv_unref(target_bs); |
| 3354 | error_propagate(errp, local_err); |
| 3355 | } |
| 3356 | out: |
| 3357 | aio_context_release(aio_context); |
| 3358 | } |
| 3359 | |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3360 | void qmp_blockdev_backup(const char *device, const char *target, |
| 3361 | enum MirrorSyncMode sync, |
| 3362 | bool has_speed, int64_t speed, |
| 3363 | bool has_on_source_error, |
| 3364 | BlockdevOnError on_source_error, |
| 3365 | bool has_on_target_error, |
| 3366 | BlockdevOnError on_target_error, |
| 3367 | Error **errp) |
| 3368 | { |
| 3369 | do_blockdev_backup(device, target, sync, has_speed, speed, |
| 3370 | has_on_source_error, on_source_error, |
| 3371 | has_on_target_error, on_target_error, |
| 3372 | NULL, errp); |
| 3373 | } |
| 3374 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3375 | /* Parameter check and block job starting for drive mirroring. |
| 3376 | * Caller should hold @device and @target's aio context (must be the same). |
| 3377 | **/ |
| 3378 | static void blockdev_mirror_common(BlockDriverState *bs, |
| 3379 | BlockDriverState *target, |
| 3380 | bool has_replaces, const char *replaces, |
| 3381 | enum MirrorSyncMode sync, |
| 3382 | bool has_speed, int64_t speed, |
| 3383 | bool has_granularity, uint32_t granularity, |
| 3384 | bool has_buf_size, int64_t buf_size, |
| 3385 | bool has_on_source_error, |
| 3386 | BlockdevOnError on_source_error, |
| 3387 | bool has_on_target_error, |
| 3388 | BlockdevOnError on_target_error, |
| 3389 | bool has_unmap, bool unmap, |
| 3390 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3391 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3392 | |
| 3393 | if (!has_speed) { |
| 3394 | speed = 0; |
| 3395 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3396 | if (!has_on_source_error) { |
| 3397 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3398 | } |
| 3399 | if (!has_on_target_error) { |
| 3400 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3401 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3402 | if (!has_granularity) { |
| 3403 | granularity = 0; |
| 3404 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3405 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 3406 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3407 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 3408 | if (!has_unmap) { |
| 3409 | unmap = true; |
| 3410 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3411 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3412 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3413 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3414 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3415 | return; |
| 3416 | } |
| 3417 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3418 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3419 | "power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3420 | return; |
| 3421 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3422 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3423 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3424 | return; |
| 3425 | } |
Fam Zheng | e40e502 | 2015-12-24 12:45:04 +0800 | [diff] [blame] | 3426 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
| 3427 | return; |
| 3428 | } |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3429 | if (target->blk) { |
| 3430 | error_setg(errp, "Cannot mirror to an attached block device"); |
| 3431 | return; |
| 3432 | } |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3433 | |
| 3434 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { |
| 3435 | sync = MIRROR_SYNC_MODE_FULL; |
| 3436 | } |
| 3437 | |
| 3438 | /* pass the node name to replace to mirror start since it's loose coupling |
| 3439 | * and will allow to check whether the node still exist at mirror completion |
| 3440 | */ |
| 3441 | mirror_start(bs, target, |
| 3442 | has_replaces ? replaces : NULL, |
| 3443 | speed, granularity, buf_size, sync, |
| 3444 | on_source_error, on_target_error, unmap, |
| 3445 | block_job_cb, bs, errp); |
| 3446 | } |
| 3447 | |
| 3448 | void qmp_drive_mirror(const char *device, const char *target, |
| 3449 | bool has_format, const char *format, |
| 3450 | bool has_node_name, const char *node_name, |
| 3451 | bool has_replaces, const char *replaces, |
| 3452 | enum MirrorSyncMode sync, |
| 3453 | bool has_mode, enum NewImageMode mode, |
| 3454 | bool has_speed, int64_t speed, |
| 3455 | bool has_granularity, uint32_t granularity, |
| 3456 | bool has_buf_size, int64_t buf_size, |
| 3457 | bool has_on_source_error, BlockdevOnError on_source_error, |
| 3458 | bool has_on_target_error, BlockdevOnError on_target_error, |
| 3459 | bool has_unmap, bool unmap, |
| 3460 | Error **errp) |
| 3461 | { |
| 3462 | BlockDriverState *bs; |
| 3463 | BlockBackend *blk; |
| 3464 | BlockDriverState *source, *target_bs; |
| 3465 | AioContext *aio_context; |
| 3466 | Error *local_err = NULL; |
| 3467 | QDict *options = NULL; |
| 3468 | int flags; |
| 3469 | int64_t size; |
| 3470 | int ret; |
| 3471 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3472 | blk = blk_by_name(device); |
| 3473 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3474 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3475 | "Device '%s' not found", device); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3476 | return; |
| 3477 | } |
| 3478 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3479 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3480 | aio_context_acquire(aio_context); |
| 3481 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3482 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3483 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3484 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3485 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3486 | bs = blk_bs(blk); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3487 | if (!has_mode) { |
| 3488 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 3489 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3490 | |
| 3491 | if (!has_format) { |
| 3492 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; |
| 3493 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3494 | |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3495 | flags = bs->open_flags | BDRV_O_RDWR; |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3496 | source = backing_bs(bs); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3497 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { |
| 3498 | sync = MIRROR_SYNC_MODE_FULL; |
| 3499 | } |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 3500 | if (sync == MIRROR_SYNC_MODE_NONE) { |
| 3501 | source = bs; |
| 3502 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3503 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3504 | size = bdrv_getlength(bs); |
| 3505 | if (size < 0) { |
| 3506 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3507 | goto out; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3508 | } |
| 3509 | |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3510 | if (has_replaces) { |
| 3511 | BlockDriverState *to_replace_bs; |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3512 | AioContext *replace_aio_context; |
| 3513 | int64_t replace_size; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3514 | |
| 3515 | if (!has_node_name) { |
| 3516 | error_setg(errp, "a node-name must be provided when replacing a" |
| 3517 | " named node of the graph"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3518 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3519 | } |
| 3520 | |
Wen Congyang | e12f378 | 2015-07-17 10:12:22 +0800 | [diff] [blame] | 3521 | to_replace_bs = check_to_replace_node(bs, replaces, &local_err); |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3522 | |
| 3523 | if (!to_replace_bs) { |
| 3524 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3525 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3526 | } |
| 3527 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3528 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
| 3529 | aio_context_acquire(replace_aio_context); |
| 3530 | replace_size = bdrv_getlength(to_replace_bs); |
| 3531 | aio_context_release(replace_aio_context); |
| 3532 | |
| 3533 | if (size != replace_size) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3534 | error_setg(errp, "cannot replace image with a mirror image of " |
| 3535 | "different size"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3536 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3537 | } |
| 3538 | } |
| 3539 | |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 3540 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
| 3541 | && mode != NEW_IMAGE_MODE_EXISTING) |
| 3542 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3543 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3544 | assert(format); |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3545 | bdrv_img_create(target, format, |
Miroslav Rezanina | f382d43 | 2013-02-13 09:09:40 +0100 | [diff] [blame] | 3546 | NULL, NULL, NULL, size, flags, &local_err, false); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3547 | } else { |
| 3548 | switch (mode) { |
| 3549 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3550 | break; |
| 3551 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 3552 | /* create new image with backing file */ |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3553 | bdrv_img_create(target, format, |
| 3554 | source->filename, |
| 3555 | source->drv->format_name, |
Miroslav Rezanina | f382d43 | 2013-02-13 09:09:40 +0100 | [diff] [blame] | 3556 | NULL, size, flags, &local_err, false); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3557 | break; |
| 3558 | default: |
| 3559 | abort(); |
| 3560 | } |
| 3561 | } |
| 3562 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3563 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3564 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3565 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3566 | } |
| 3567 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3568 | options = qdict_new(); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3569 | if (has_node_name) { |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3570 | qdict_put(options, "node-name", qstring_from_str(node_name)); |
| 3571 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3572 | if (format) { |
| 3573 | qdict_put(options, "driver", qstring_from_str(format)); |
| 3574 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3575 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3576 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3577 | * file. |
| 3578 | */ |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 3579 | target_bs = NULL; |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3580 | ret = bdrv_open(&target_bs, target, NULL, options, |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 3581 | flags | BDRV_O_NO_BACKING, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3582 | if (ret < 0) { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 3583 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3584 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3585 | } |
| 3586 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3587 | bdrv_set_aio_context(target_bs, aio_context); |
| 3588 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3589 | blockdev_mirror_common(bs, target_bs, |
| 3590 | has_replaces, replaces, sync, |
| 3591 | has_speed, speed, |
| 3592 | has_granularity, granularity, |
| 3593 | has_buf_size, buf_size, |
| 3594 | has_on_source_error, on_source_error, |
| 3595 | has_on_target_error, on_target_error, |
| 3596 | has_unmap, unmap, |
| 3597 | &local_err); |
| 3598 | if (local_err) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3599 | error_propagate(errp, local_err); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3600 | bdrv_unref(target_bs); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3601 | } |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3602 | out: |
| 3603 | aio_context_release(aio_context); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3604 | } |
| 3605 | |
Fam Zheng | df92562e | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3606 | void qmp_blockdev_mirror(const char *device, const char *target, |
| 3607 | bool has_replaces, const char *replaces, |
| 3608 | MirrorSyncMode sync, |
| 3609 | bool has_speed, int64_t speed, |
| 3610 | bool has_granularity, uint32_t granularity, |
| 3611 | bool has_buf_size, int64_t buf_size, |
| 3612 | bool has_on_source_error, |
| 3613 | BlockdevOnError on_source_error, |
| 3614 | bool has_on_target_error, |
| 3615 | BlockdevOnError on_target_error, |
| 3616 | Error **errp) |
| 3617 | { |
| 3618 | BlockDriverState *bs; |
| 3619 | BlockBackend *blk; |
| 3620 | BlockDriverState *target_bs; |
| 3621 | AioContext *aio_context; |
| 3622 | Error *local_err = NULL; |
| 3623 | |
| 3624 | blk = blk_by_name(device); |
| 3625 | if (!blk) { |
| 3626 | error_setg(errp, "Device '%s' not found", device); |
| 3627 | return; |
| 3628 | } |
| 3629 | bs = blk_bs(blk); |
| 3630 | |
| 3631 | if (!bs) { |
| 3632 | error_setg(errp, "Device '%s' has no media", device); |
| 3633 | return; |
| 3634 | } |
| 3635 | |
| 3636 | target_bs = bdrv_lookup_bs(target, target, errp); |
| 3637 | if (!target_bs) { |
| 3638 | return; |
| 3639 | } |
| 3640 | |
| 3641 | aio_context = bdrv_get_aio_context(bs); |
| 3642 | aio_context_acquire(aio_context); |
| 3643 | |
| 3644 | bdrv_ref(target_bs); |
| 3645 | bdrv_set_aio_context(target_bs, aio_context); |
| 3646 | |
| 3647 | blockdev_mirror_common(bs, target_bs, |
| 3648 | has_replaces, replaces, sync, |
| 3649 | has_speed, speed, |
| 3650 | has_granularity, granularity, |
| 3651 | has_buf_size, buf_size, |
| 3652 | has_on_source_error, on_source_error, |
| 3653 | has_on_target_error, on_target_error, |
| 3654 | true, true, |
| 3655 | &local_err); |
| 3656 | if (local_err) { |
| 3657 | error_propagate(errp, local_err); |
| 3658 | bdrv_unref(target_bs); |
| 3659 | } |
| 3660 | |
| 3661 | aio_context_release(aio_context); |
| 3662 | } |
| 3663 | |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3664 | /* 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] | 3665 | static BlockJob *find_block_job(const char *device, AioContext **aio_context, |
| 3666 | Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3667 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3668 | BlockBackend *blk; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3669 | BlockDriverState *bs; |
| 3670 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3671 | *aio_context = NULL; |
| 3672 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3673 | blk = blk_by_name(device); |
| 3674 | if (!blk) { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3675 | goto notfound; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3676 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3677 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3678 | *aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3679 | aio_context_acquire(*aio_context); |
| 3680 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3681 | if (!blk_is_available(blk)) { |
| 3682 | goto notfound; |
| 3683 | } |
| 3684 | bs = blk_bs(blk); |
| 3685 | |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3686 | if (!bs->job) { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3687 | goto notfound; |
| 3688 | } |
| 3689 | |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3690 | return bs->job; |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3691 | |
| 3692 | notfound: |
Markus Armbruster | 2e3a026 | 2015-01-29 10:36:59 +0100 | [diff] [blame] | 3693 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 3694 | "No active block job on device '%s'", device); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3695 | if (*aio_context) { |
| 3696 | aio_context_release(*aio_context); |
| 3697 | *aio_context = NULL; |
| 3698 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3699 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3700 | } |
| 3701 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3702 | 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] | 3703 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3704 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3705 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3706 | |
| 3707 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3708 | return; |
| 3709 | } |
| 3710 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3711 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3712 | aio_context_release(aio_context); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3713 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3714 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3715 | void qmp_block_job_cancel(const char *device, |
| 3716 | bool has_force, bool force, Error **errp) |
| 3717 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3718 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3719 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3720 | |
| 3721 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3722 | return; |
| 3723 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3724 | |
| 3725 | if (!has_force) { |
| 3726 | force = false; |
| 3727 | } |
| 3728 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3729 | if (job->user_paused && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 3730 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 3731 | device); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3732 | goto out; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3733 | } |
| 3734 | |
| 3735 | trace_qmp_block_job_cancel(job); |
| 3736 | block_job_cancel(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3737 | out: |
| 3738 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3739 | } |
| 3740 | |
| 3741 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3742 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3743 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3744 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3745 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3746 | if (!job || job->user_paused) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3747 | return; |
| 3748 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3749 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3750 | job->user_paused = true; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3751 | trace_qmp_block_job_pause(job); |
| 3752 | block_job_pause(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3753 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3754 | } |
| 3755 | |
| 3756 | void qmp_block_job_resume(const char *device, Error **errp) |
| 3757 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3758 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3759 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3760 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3761 | if (!job || !job->user_paused) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 3762 | return; |
| 3763 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3764 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3765 | job->user_paused = false; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3766 | trace_qmp_block_job_resume(job); |
| 3767 | block_job_resume(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3768 | aio_context_release(aio_context); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3769 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3770 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3771 | void qmp_block_job_complete(const char *device, Error **errp) |
| 3772 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3773 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3774 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3775 | |
| 3776 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3777 | return; |
| 3778 | } |
| 3779 | |
| 3780 | trace_qmp_block_job_complete(job); |
| 3781 | block_job_complete(job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3782 | aio_context_release(aio_context); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3783 | } |
| 3784 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3785 | void qmp_change_backing_file(const char *device, |
| 3786 | const char *image_node_name, |
| 3787 | const char *backing_file, |
| 3788 | Error **errp) |
| 3789 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3790 | BlockBackend *blk; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3791 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3792 | AioContext *aio_context; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3793 | BlockDriverState *image_bs = NULL; |
| 3794 | Error *local_err = NULL; |
| 3795 | bool ro; |
| 3796 | int open_flags; |
| 3797 | int ret; |
| 3798 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3799 | blk = blk_by_name(device); |
| 3800 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3801 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3802 | "Device '%s' not found", device); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3803 | return; |
| 3804 | } |
| 3805 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3806 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3807 | aio_context_acquire(aio_context); |
| 3808 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3809 | if (!blk_is_available(blk)) { |
| 3810 | error_setg(errp, "Device '%s' has no medium", device); |
| 3811 | goto out; |
| 3812 | } |
| 3813 | bs = blk_bs(blk); |
| 3814 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3815 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 3816 | if (local_err) { |
| 3817 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3818 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3819 | } |
| 3820 | |
| 3821 | if (!image_bs) { |
| 3822 | error_setg(errp, "image file not found"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3823 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3824 | } |
| 3825 | |
| 3826 | if (bdrv_find_base(image_bs) == image_bs) { |
| 3827 | error_setg(errp, "not allowing backing file change on an image " |
| 3828 | "without a backing file"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3829 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3830 | } |
| 3831 | |
| 3832 | /* even though we are not necessarily operating on bs, we need it to |
| 3833 | * determine if block ops are currently prohibited on the chain */ |
| 3834 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3835 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3836 | } |
| 3837 | |
| 3838 | /* final sanity check */ |
| 3839 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 3840 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 3841 | device); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3842 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3843 | } |
| 3844 | |
| 3845 | /* if not r/w, reopen to make r/w */ |
| 3846 | open_flags = image_bs->open_flags; |
| 3847 | ro = bdrv_is_read_only(image_bs); |
| 3848 | |
| 3849 | if (ro) { |
| 3850 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); |
| 3851 | if (local_err) { |
| 3852 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3853 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3854 | } |
| 3855 | } |
| 3856 | |
| 3857 | ret = bdrv_change_backing_file(image_bs, backing_file, |
| 3858 | image_bs->drv ? image_bs->drv->format_name : ""); |
| 3859 | |
| 3860 | if (ret < 0) { |
| 3861 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 3862 | backing_file); |
| 3863 | /* don't exit here, so we can try to restore open flags if |
| 3864 | * appropriate */ |
| 3865 | } |
| 3866 | |
| 3867 | if (ro) { |
| 3868 | bdrv_reopen(image_bs, open_flags, &local_err); |
| 3869 | if (local_err) { |
| 3870 | error_propagate(errp, local_err); /* will preserve prior errp */ |
| 3871 | } |
| 3872 | } |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3873 | |
| 3874 | out: |
| 3875 | aio_context_release(aio_context); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3876 | } |
| 3877 | |
Kevin Wolf | abb21ac3 | 2016-02-23 17:33:24 +0100 | [diff] [blame^] | 3878 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
| 3879 | { |
| 3880 | QemuOpts *opts; |
| 3881 | QDict *qdict; |
| 3882 | Error *local_err = NULL; |
| 3883 | |
| 3884 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); |
| 3885 | if (!opts) { |
| 3886 | return; |
| 3887 | } |
| 3888 | |
| 3889 | qdict = qemu_opts_to_qdict(opts, NULL); |
| 3890 | |
| 3891 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 3892 | error_report("'node-name' needs to be specified"); |
| 3893 | goto out; |
| 3894 | } |
| 3895 | |
| 3896 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); |
| 3897 | if (!bs) { |
| 3898 | error_report_err(local_err); |
| 3899 | goto out; |
| 3900 | } |
| 3901 | |
| 3902 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 3903 | |
| 3904 | out: |
| 3905 | qemu_opts_del(opts); |
| 3906 | } |
| 3907 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3908 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 3909 | { |
| 3910 | QmpOutputVisitor *ov = qmp_output_visitor_new(); |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3911 | BlockDriverState *bs; |
| 3912 | BlockBackend *blk = NULL; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3913 | QObject *obj; |
| 3914 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3915 | Error *local_err = NULL; |
| 3916 | |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 3917 | /* 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] | 3918 | * cache.direct=false instead of silently switching to aio=threads, except |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 3919 | * when called from drive_new(). |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3920 | * |
| 3921 | * For now, simply forbidding the combination for all drivers will do. */ |
| 3922 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { |
Kevin Wolf | c6e0bd9 | 2014-03-06 15:47:32 +0100 | [diff] [blame] | 3923 | bool direct = options->has_cache && |
| 3924 | options->cache->has_direct && |
| 3925 | options->cache->direct; |
| 3926 | if (!direct) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3927 | error_setg(errp, "aio=native requires cache.direct=true"); |
| 3928 | goto fail; |
| 3929 | } |
| 3930 | } |
| 3931 | |
Eric Blake | 51e72bc | 2016-01-29 06:48:54 -0700 | [diff] [blame] | 3932 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), NULL, &options, |
| 3933 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3934 | if (local_err) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3935 | error_propagate(errp, local_err); |
| 3936 | goto fail; |
| 3937 | } |
| 3938 | |
| 3939 | obj = qmp_output_get_qobject(ov); |
| 3940 | qdict = qobject_to_qdict(obj); |
| 3941 | |
| 3942 | qdict_flatten(qdict); |
| 3943 | |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3944 | if (options->has_id) { |
| 3945 | blk = blockdev_init(NULL, qdict, &local_err); |
| 3946 | if (local_err) { |
| 3947 | error_propagate(errp, local_err); |
| 3948 | goto fail; |
| 3949 | } |
| 3950 | |
| 3951 | bs = blk_bs(blk); |
| 3952 | } else { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3953 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 3954 | error_setg(errp, "'id' and/or 'node-name' need to be specified for " |
| 3955 | "the root node"); |
| 3956 | goto fail; |
| 3957 | } |
| 3958 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 3959 | bs = bds_tree_init(qdict, errp); |
| 3960 | if (!bs) { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3961 | goto fail; |
| 3962 | } |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 3963 | |
| 3964 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3965 | } |
| 3966 | |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3967 | if (bs && bdrv_key_required(bs)) { |
| 3968 | if (blk) { |
| 3969 | blk_unref(blk); |
| 3970 | } else { |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 3971 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3972 | bdrv_unref(bs); |
| 3973 | } |
Kevin Wolf | 8ae8e90 | 2014-03-06 15:43:42 +0100 | [diff] [blame] | 3974 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
| 3975 | goto fail; |
| 3976 | } |
| 3977 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3978 | fail: |
| 3979 | qmp_output_visitor_cleanup(ov); |
| 3980 | } |
| 3981 | |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3982 | void qmp_x_blockdev_del(bool has_id, const char *id, |
| 3983 | bool has_node_name, const char *node_name, Error **errp) |
| 3984 | { |
| 3985 | AioContext *aio_context; |
| 3986 | BlockBackend *blk; |
| 3987 | BlockDriverState *bs; |
| 3988 | |
| 3989 | if (has_id && has_node_name) { |
| 3990 | error_setg(errp, "Only one of id and node-name must be specified"); |
| 3991 | return; |
| 3992 | } else if (!has_id && !has_node_name) { |
| 3993 | error_setg(errp, "No block device specified"); |
| 3994 | return; |
| 3995 | } |
| 3996 | |
| 3997 | if (has_id) { |
| 3998 | blk = blk_by_name(id); |
| 3999 | if (!blk) { |
| 4000 | error_setg(errp, "Cannot find block backend %s", id); |
| 4001 | return; |
| 4002 | } |
| 4003 | if (blk_get_refcnt(blk) > 1) { |
| 4004 | error_setg(errp, "Block backend %s is in use", id); |
| 4005 | return; |
| 4006 | } |
| 4007 | bs = blk_bs(blk); |
| 4008 | aio_context = blk_get_aio_context(blk); |
| 4009 | } else { |
| 4010 | bs = bdrv_find_node(node_name); |
| 4011 | if (!bs) { |
| 4012 | error_setg(errp, "Cannot find node %s", node_name); |
| 4013 | return; |
| 4014 | } |
| 4015 | blk = bs->blk; |
| 4016 | if (blk) { |
| 4017 | error_setg(errp, "Node %s is in use by %s", |
| 4018 | node_name, blk_name(blk)); |
| 4019 | return; |
| 4020 | } |
| 4021 | aio_context = bdrv_get_aio_context(bs); |
| 4022 | } |
| 4023 | |
| 4024 | aio_context_acquire(aio_context); |
| 4025 | |
| 4026 | if (bs) { |
| 4027 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
| 4028 | goto out; |
| 4029 | } |
| 4030 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 4031 | if (!blk && !bs->monitor_list.tqe_prev) { |
| 4032 | error_setg(errp, "Node %s is not owned by the monitor", |
| 4033 | bs->node_name); |
| 4034 | goto out; |
| 4035 | } |
| 4036 | |
| 4037 | if (bs->refcnt > 1) { |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4038 | error_setg(errp, "Block device %s is in use", |
| 4039 | bdrv_get_device_or_node_name(bs)); |
| 4040 | goto out; |
| 4041 | } |
| 4042 | } |
| 4043 | |
| 4044 | if (blk) { |
| 4045 | blk_unref(blk); |
| 4046 | } else { |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 4047 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4048 | bdrv_unref(bs); |
| 4049 | } |
| 4050 | |
| 4051 | out: |
| 4052 | aio_context_release(aio_context); |
| 4053 | } |
| 4054 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4055 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 4056 | { |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4057 | BlockJobInfoList *head = NULL, **p_next = &head; |
| 4058 | BlockDriverState *bs; |
| 4059 | |
| 4060 | for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) { |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4061 | AioContext *aio_context = bdrv_get_aio_context(bs); |
| 4062 | |
| 4063 | aio_context_acquire(aio_context); |
| 4064 | |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4065 | if (bs->job) { |
| 4066 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
| 4067 | elem->value = block_job_query(bs->job); |
| 4068 | *p_next = elem; |
| 4069 | p_next = &elem->next; |
| 4070 | } |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4071 | |
| 4072 | aio_context_release(aio_context); |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4073 | } |
| 4074 | |
| 4075 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4076 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4077 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4078 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4079 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4080 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4081 | .desc = { |
| 4082 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4083 | .name = "snapshot", |
| 4084 | .type = QEMU_OPT_BOOL, |
| 4085 | .help = "enable/disable snapshot mode", |
| 4086 | },{ |
Paolo Bonzini | a9384af | 2013-02-08 14:06:12 +0100 | [diff] [blame] | 4087 | .name = "discard", |
| 4088 | .type = QEMU_OPT_STRING, |
| 4089 | .help = "discard operation (ignore/off, unmap/on)", |
| 4090 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4091 | .name = "aio", |
| 4092 | .type = QEMU_OPT_STRING, |
| 4093 | .help = "host AIO implementation (threads, native)", |
| 4094 | },{ |
| 4095 | .name = "format", |
| 4096 | .type = QEMU_OPT_STRING, |
| 4097 | .help = "disk format (raw, qcow2, ...)", |
| 4098 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4099 | .name = "rerror", |
| 4100 | .type = QEMU_OPT_STRING, |
| 4101 | .help = "read error action", |
| 4102 | },{ |
| 4103 | .name = "werror", |
| 4104 | .type = QEMU_OPT_STRING, |
| 4105 | .help = "write error action", |
| 4106 | },{ |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 4107 | .name = "read-only", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4108 | .type = QEMU_OPT_BOOL, |
| 4109 | .help = "open drive file as read-only", |
| 4110 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4111 | .name = "throttling.iops-total", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4112 | .type = QEMU_OPT_NUMBER, |
| 4113 | .help = "limit total I/O operations per second", |
| 4114 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4115 | .name = "throttling.iops-read", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4116 | .type = QEMU_OPT_NUMBER, |
| 4117 | .help = "limit read operations per second", |
| 4118 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4119 | .name = "throttling.iops-write", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4120 | .type = QEMU_OPT_NUMBER, |
| 4121 | .help = "limit write operations per second", |
| 4122 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4123 | .name = "throttling.bps-total", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4124 | .type = QEMU_OPT_NUMBER, |
| 4125 | .help = "limit total bytes per second", |
| 4126 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4127 | .name = "throttling.bps-read", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4128 | .type = QEMU_OPT_NUMBER, |
| 4129 | .help = "limit read bytes per second", |
| 4130 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 4131 | .name = "throttling.bps-write", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4132 | .type = QEMU_OPT_NUMBER, |
| 4133 | .help = "limit write bytes per second", |
| 4134 | },{ |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 4135 | .name = "throttling.iops-total-max", |
| 4136 | .type = QEMU_OPT_NUMBER, |
| 4137 | .help = "I/O operations burst", |
| 4138 | },{ |
| 4139 | .name = "throttling.iops-read-max", |
| 4140 | .type = QEMU_OPT_NUMBER, |
| 4141 | .help = "I/O operations read burst", |
| 4142 | },{ |
| 4143 | .name = "throttling.iops-write-max", |
| 4144 | .type = QEMU_OPT_NUMBER, |
| 4145 | .help = "I/O operations write burst", |
| 4146 | },{ |
| 4147 | .name = "throttling.bps-total-max", |
| 4148 | .type = QEMU_OPT_NUMBER, |
| 4149 | .help = "total bytes burst", |
| 4150 | },{ |
| 4151 | .name = "throttling.bps-read-max", |
| 4152 | .type = QEMU_OPT_NUMBER, |
| 4153 | .help = "total bytes read burst", |
| 4154 | },{ |
| 4155 | .name = "throttling.bps-write-max", |
| 4156 | .type = QEMU_OPT_NUMBER, |
| 4157 | .help = "total bytes write burst", |
| 4158 | },{ |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 4159 | .name = "throttling.iops-total-max-length", |
| 4160 | .type = QEMU_OPT_NUMBER, |
| 4161 | .help = "length of the iops-total-max burst period, in seconds", |
| 4162 | },{ |
| 4163 | .name = "throttling.iops-read-max-length", |
| 4164 | .type = QEMU_OPT_NUMBER, |
| 4165 | .help = "length of the iops-read-max burst period, in seconds", |
| 4166 | },{ |
| 4167 | .name = "throttling.iops-write-max-length", |
| 4168 | .type = QEMU_OPT_NUMBER, |
| 4169 | .help = "length of the iops-write-max burst period, in seconds", |
| 4170 | },{ |
| 4171 | .name = "throttling.bps-total-max-length", |
| 4172 | .type = QEMU_OPT_NUMBER, |
| 4173 | .help = "length of the bps-total-max burst period, in seconds", |
| 4174 | },{ |
| 4175 | .name = "throttling.bps-read-max-length", |
| 4176 | .type = QEMU_OPT_NUMBER, |
| 4177 | .help = "length of the bps-read-max burst period, in seconds", |
| 4178 | },{ |
| 4179 | .name = "throttling.bps-write-max-length", |
| 4180 | .type = QEMU_OPT_NUMBER, |
| 4181 | .help = "length of the bps-write-max burst period, in seconds", |
| 4182 | },{ |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 4183 | .name = "throttling.iops-size", |
| 4184 | .type = QEMU_OPT_NUMBER, |
| 4185 | .help = "when limiting by iops max size of an I/O in bytes", |
| 4186 | },{ |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 4187 | .name = "throttling.group", |
| 4188 | .type = QEMU_OPT_STRING, |
| 4189 | .help = "name of the block throttling group", |
| 4190 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4191 | .name = "copy-on-read", |
| 4192 | .type = QEMU_OPT_BOOL, |
| 4193 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 4194 | },{ |
| 4195 | .name = "detect-zeroes", |
| 4196 | .type = QEMU_OPT_STRING, |
| 4197 | .help = "try to optimize zero writes (off, on, unmap)", |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 4198 | },{ |
| 4199 | .name = "stats-account-invalid", |
| 4200 | .type = QEMU_OPT_BOOL, |
| 4201 | .help = "whether to account for invalid I/O operations " |
| 4202 | "in the statistics", |
| 4203 | },{ |
| 4204 | .name = "stats-account-failed", |
| 4205 | .type = QEMU_OPT_BOOL, |
| 4206 | .help = "whether to account for failed I/O operations " |
| 4207 | "in the statistics", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4208 | }, |
| 4209 | { /* end of list */ } |
| 4210 | }, |
| 4211 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4212 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 4213 | static QemuOptsList qemu_root_bds_opts = { |
| 4214 | .name = "root-bds", |
| 4215 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
| 4216 | .desc = { |
| 4217 | { |
| 4218 | .name = "discard", |
| 4219 | .type = QEMU_OPT_STRING, |
| 4220 | .help = "discard operation (ignore/off, unmap/on)", |
| 4221 | },{ |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 4222 | .name = "aio", |
| 4223 | .type = QEMU_OPT_STRING, |
| 4224 | .help = "host AIO implementation (threads, native)", |
| 4225 | },{ |
| 4226 | .name = "read-only", |
| 4227 | .type = QEMU_OPT_BOOL, |
| 4228 | .help = "open drive file as read-only", |
| 4229 | },{ |
| 4230 | .name = "copy-on-read", |
| 4231 | .type = QEMU_OPT_BOOL, |
| 4232 | .help = "copy read data from backing file into image file", |
| 4233 | },{ |
| 4234 | .name = "detect-zeroes", |
| 4235 | .type = QEMU_OPT_STRING, |
| 4236 | .help = "try to optimize zero writes (off, on, unmap)", |
| 4237 | }, |
| 4238 | { /* end of list */ } |
| 4239 | }, |
| 4240 | }; |
| 4241 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4242 | QemuOptsList qemu_drive_opts = { |
| 4243 | .name = "drive", |
| 4244 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 4245 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 4246 | /* |
| 4247 | * no elements => accept any params |
| 4248 | * validation will happen later |
| 4249 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4250 | { /* end of list */ } |
| 4251 | }, |
| 4252 | }; |