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 | |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 33 | #include "sysemu/block-backend.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 34 | #include "sysemu/blockdev.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 35 | #include "hw/block/block.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 36 | #include "block/blockjob.h" |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 37 | #include "block/throttle-groups.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 38 | #include "monitor/monitor.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 39 | #include "qemu/error-report.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 40 | #include "qemu/option.h" |
| 41 | #include "qemu/config-file.h" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 42 | #include "qapi/qmp/types.h" |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 43 | #include "qapi-visit.h" |
Markus Armbruster | cc7a8ea | 2015-03-17 17:22:46 +0100 | [diff] [blame] | 44 | #include "qapi/qmp/qerror.h" |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 45 | #include "qapi/qmp-output-visitor.h" |
Peter Lieven | 9e7dac7 | 2014-08-13 19:20:17 +0200 | [diff] [blame] | 46 | #include "qapi/util.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 47 | #include "sysemu/sysemu.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 48 | #include "block/block_int.h" |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 49 | #include "qmp-commands.h" |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 50 | #include "trace.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 51 | #include "sysemu/arch_init.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 52 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 53 | static const char *const if_name[IF_COUNT] = { |
| 54 | [IF_NONE] = "none", |
| 55 | [IF_IDE] = "ide", |
| 56 | [IF_SCSI] = "scsi", |
| 57 | [IF_FLOPPY] = "floppy", |
| 58 | [IF_PFLASH] = "pflash", |
| 59 | [IF_MTD] = "mtd", |
| 60 | [IF_SD] = "sd", |
| 61 | [IF_VIRTIO] = "virtio", |
| 62 | [IF_XEN] = "xen", |
| 63 | }; |
| 64 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 65 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 66 | /* |
| 67 | * Do not change these numbers! They govern how drive option |
| 68 | * index maps to unit and bus. That mapping is ABI. |
| 69 | * |
| 70 | * All controllers used to imlement if=T drives need to support |
| 71 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 72 | * Otherwise, some index values map to "impossible" bus, unit |
| 73 | * values. |
| 74 | * |
| 75 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 76 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 77 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 78 | * the drive can't be set up. Regression. |
| 79 | */ |
| 80 | [IF_IDE] = 2, |
| 81 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 82 | }; |
| 83 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 84 | /** |
| 85 | * Boards may call this to offer board-by-board overrides |
| 86 | * of the default, global values. |
| 87 | */ |
| 88 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 89 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 90 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 91 | DriveInfo *dinfo; |
| 92 | |
| 93 | if (max_devs <= 0) { |
| 94 | return; |
| 95 | } |
| 96 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 97 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 98 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 99 | if (dinfo->type == type) { |
| 100 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 101 | " the %s interface, because a drive of that type has" |
| 102 | " already been added.\n", if_name[type]); |
| 103 | g_assert_not_reached(); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | if_max_devs[type] = max_devs; |
| 108 | } |
| 109 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 110 | /* |
| 111 | * We automatically delete the drive when a device using it gets |
| 112 | * unplugged. Questionable feature, but we can't just drop it. |
| 113 | * Device models call blockdev_mark_auto_del() to schedule the |
| 114 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 115 | * when deletion is actually safe. |
| 116 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 117 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 118 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 119 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 120 | BlockDriverState *bs = blk_bs(blk); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 121 | AioContext *aio_context; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 122 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 123 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 124 | return; |
| 125 | } |
| 126 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 127 | if (bs) { |
| 128 | aio_context = bdrv_get_aio_context(bs); |
| 129 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 130 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 131 | if (bs->job) { |
| 132 | block_job_cancel(bs->job); |
| 133 | } |
| 134 | |
| 135 | aio_context_release(aio_context); |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 136 | } |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 137 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 138 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 139 | } |
| 140 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 141 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 142 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 143 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 144 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 145 | if (dinfo && dinfo->auto_del) { |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 146 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 147 | } |
| 148 | } |
| 149 | |
John Snow | d8f94e1 | 2014-10-01 14:19:27 -0400 | [diff] [blame] | 150 | /** |
| 151 | * Returns the current mapping of how many units per bus |
| 152 | * a particular interface can support. |
| 153 | * |
| 154 | * A positive integer indicates n units per bus. |
| 155 | * 0 implies the mapping has not been established. |
| 156 | * -1 indicates an invalid BlockInterfaceType was given. |
| 157 | */ |
| 158 | int drive_get_max_devs(BlockInterfaceType type) |
| 159 | { |
| 160 | if (type >= IF_IDE && type < IF_COUNT) { |
| 161 | return if_max_devs[type]; |
| 162 | } |
| 163 | |
| 164 | return -1; |
| 165 | } |
| 166 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 167 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 168 | { |
| 169 | int max_devs = if_max_devs[type]; |
| 170 | return max_devs ? index / max_devs : 0; |
| 171 | } |
| 172 | |
| 173 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 174 | { |
| 175 | int max_devs = if_max_devs[type]; |
| 176 | return max_devs ? index % max_devs : index; |
| 177 | } |
| 178 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 179 | QemuOpts *drive_def(const char *optstr) |
| 180 | { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 181 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 185 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 186 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 187 | QemuOpts *opts; |
| 188 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 189 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 190 | if (!opts) { |
| 191 | return NULL; |
| 192 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 193 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 194 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 195 | } |
| 196 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 197 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 198 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 199 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 200 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 201 | return opts; |
| 202 | } |
| 203 | |
| 204 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 205 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 206 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 207 | DriveInfo *dinfo; |
| 208 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 209 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 210 | dinfo = blk_legacy_dinfo(blk); |
| 211 | if (dinfo && dinfo->type == type |
| 212 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 213 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 214 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | return NULL; |
| 218 | } |
| 219 | |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 220 | bool drive_check_orphaned(void) |
| 221 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 222 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 223 | DriveInfo *dinfo; |
| 224 | bool rs = false; |
| 225 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 226 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 227 | dinfo = blk_legacy_dinfo(blk); |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 228 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ |
| 229 | /* Unless this is a default drive, this may be an oversight. */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 230 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 231 | dinfo->type != IF_NONE) { |
| 232 | fprintf(stderr, "Warning: Orphaned drive without device: " |
| 233 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 234 | blk_name(blk), blk_bs(blk) ? blk_bs(blk)->filename : "", |
| 235 | if_name[dinfo->type], dinfo->bus, dinfo->unit); |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 236 | rs = true; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | return rs; |
| 241 | } |
| 242 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 243 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 244 | { |
| 245 | return drive_get(type, |
| 246 | drive_index_to_bus_id(type, index), |
| 247 | drive_index_to_unit_id(type, index)); |
| 248 | } |
| 249 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 250 | int drive_get_max_bus(BlockInterfaceType type) |
| 251 | { |
| 252 | int max_bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 253 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 254 | DriveInfo *dinfo; |
| 255 | |
| 256 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 257 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 258 | dinfo = blk_legacy_dinfo(blk); |
| 259 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 260 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 261 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 262 | } |
| 263 | return max_bus; |
| 264 | } |
| 265 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 266 | /* Get a block device. This should only be used for single-drive devices |
| 267 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 268 | appropriate bus. */ |
| 269 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 270 | { |
| 271 | static int next_block_unit[IF_COUNT]; |
| 272 | |
| 273 | return drive_get(type, 0, next_block_unit[type]++); |
| 274 | } |
| 275 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 276 | static void bdrv_format_print(void *opaque, const char *name) |
| 277 | { |
Markus Armbruster | 807105a | 2011-01-17 19:31:27 +0100 | [diff] [blame] | 278 | error_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 279 | } |
| 280 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 281 | typedef struct { |
| 282 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 283 | BlockDriverState *bs; |
| 284 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 285 | |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 286 | static void bdrv_put_ref_bh(void *opaque) |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 287 | { |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 288 | BDRVPutRefBH *s = opaque; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 289 | |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 290 | bdrv_unref(s->bs); |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 291 | qemu_bh_delete(s->bh); |
| 292 | g_free(s); |
| 293 | } |
| 294 | |
| 295 | /* |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 296 | * Release a BDS reference in a BH |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 297 | * |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 298 | * It is not safe to use bdrv_unref() from a callback function when the callers |
| 299 | * still need the BlockDriverState. In such cases we schedule a BH to release |
| 300 | * the reference. |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 301 | */ |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 302 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 303 | { |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 304 | BDRVPutRefBH *s; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 305 | |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 306 | s = g_new(BDRVPutRefBH, 1); |
| 307 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); |
| 308 | s->bs = bs; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 309 | qemu_bh_schedule(s->bh); |
| 310 | } |
| 311 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 312 | 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] | 313 | { |
| 314 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 315 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 316 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 317 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 318 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 319 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 320 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 321 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 322 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 323 | error_setg(errp, "'%s' invalid %s error action", |
| 324 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 325 | return -1; |
| 326 | } |
| 327 | } |
| 328 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 329 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 330 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 331 | if (throttle_conflicting(cfg)) { |
| 332 | error_setg(errp, "bps/iops/max total values and read/write values" |
| 333 | " cannot be used at the same time"); |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 334 | return false; |
| 335 | } |
| 336 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 337 | if (!throttle_is_valid(cfg)) { |
| 338 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); |
Stefan Hajnoczi | 7d81c14 | 2013-02-13 16:53:43 +0100 | [diff] [blame] | 339 | return false; |
| 340 | } |
| 341 | |
Stefan Hajnoczi | ee2bdc3 | 2015-08-04 11:22:12 +0100 | [diff] [blame] | 342 | if (throttle_max_is_missing_limit(cfg)) { |
| 343 | error_setg(errp, "bps_max/iops_max require corresponding" |
| 344 | " bps/iops values"); |
| 345 | return false; |
| 346 | } |
| 347 | |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 348 | return true; |
| 349 | } |
| 350 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 351 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 352 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 353 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 354 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 355 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 356 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 357 | { |
| 358 | const char *discard; |
| 359 | Error *local_error = NULL; |
| 360 | const char *aio; |
| 361 | |
| 362 | if (bdrv_flags) { |
| 363 | if (!qemu_opt_get_bool(opts, "read-only", false)) { |
| 364 | *bdrv_flags |= BDRV_O_RDWR; |
| 365 | } |
| 366 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 367 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 368 | } |
| 369 | |
| 370 | if ((discard = qemu_opt_get(opts, "discard")) != NULL) { |
| 371 | if (bdrv_parse_discard_flags(discard, bdrv_flags) != 0) { |
| 372 | error_setg(errp, "Invalid discard option"); |
| 373 | return; |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true)) { |
| 378 | *bdrv_flags |= BDRV_O_CACHE_WB; |
| 379 | } |
| 380 | if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_DIRECT, false)) { |
| 381 | *bdrv_flags |= BDRV_O_NOCACHE; |
| 382 | } |
| 383 | if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, false)) { |
| 384 | *bdrv_flags |= BDRV_O_NO_FLUSH; |
| 385 | } |
| 386 | |
| 387 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
| 388 | if (!strcmp(aio, "native")) { |
| 389 | *bdrv_flags |= BDRV_O_NATIVE_AIO; |
| 390 | } else if (!strcmp(aio, "threads")) { |
| 391 | /* this is the default */ |
| 392 | } else { |
| 393 | error_setg(errp, "invalid aio option"); |
| 394 | return; |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | /* disk I/O throttling */ |
| 400 | if (throttling_group) { |
| 401 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 402 | } |
| 403 | |
| 404 | if (throttle_cfg) { |
| 405 | memset(throttle_cfg, 0, sizeof(*throttle_cfg)); |
| 406 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 407 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 408 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 409 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 410 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 411 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 412 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 413 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 414 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 415 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 416 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 417 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 418 | |
| 419 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 420 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 421 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 422 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 423 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 424 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 425 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 426 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 427 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 428 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 429 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 430 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 431 | |
| 432 | throttle_cfg->op_size = |
| 433 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 434 | |
| 435 | if (!check_throttle_config(throttle_cfg, errp)) { |
| 436 | return; |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | if (detect_zeroes) { |
| 441 | *detect_zeroes = |
| 442 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, |
| 443 | qemu_opt_get(opts, "detect-zeroes"), |
| 444 | BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX, |
| 445 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 446 | &local_error); |
| 447 | if (local_error) { |
| 448 | error_propagate(errp, local_error); |
| 449 | return; |
| 450 | } |
| 451 | |
| 452 | if (bdrv_flags && |
| 453 | *detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && |
| 454 | !(*bdrv_flags & BDRV_O_UNMAP)) |
| 455 | { |
| 456 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " |
| 457 | "without setting discard operation to unmap"); |
| 458 | return; |
| 459 | } |
| 460 | } |
| 461 | } |
| 462 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 463 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 464 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 465 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 466 | { |
| 467 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 468 | int bdrv_flags = 0; |
| 469 | int on_read_error, on_write_error; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 470 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 471 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 472 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 473 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 474 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 475 | QemuOpts *opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 476 | const char *id; |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 477 | bool has_driver_specific_opts; |
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 | |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 501 | has_driver_specific_opts = !!qdict_size(bs_opts); |
| 502 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 503 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 504 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 505 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 506 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 507 | &detect_zeroes, &error); |
| 508 | if (error) { |
| 509 | error_propagate(errp, error); |
| 510 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 511 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 512 | |
| 513 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 514 | if (is_help_option(buf)) { |
| 515 | error_printf("Supported formats:"); |
| 516 | bdrv_iterate_format(bdrv_format_print, NULL); |
| 517 | error_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 518 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 519 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 520 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 521 | if (qdict_haskey(bs_opts, "driver")) { |
| 522 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 523 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 524 | } |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 525 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 526 | } |
| 527 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 528 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 529 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 530 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 531 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 532 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 533 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 534 | } |
| 535 | } |
| 536 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 537 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 538 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 539 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 540 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 541 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 542 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 543 | } |
| 544 | } |
| 545 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 546 | if (snapshot) { |
| 547 | /* always use cache=unsafe with snapshot */ |
| 548 | bdrv_flags &= ~BDRV_O_CACHE_MASK; |
| 549 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); |
| 550 | } |
| 551 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 552 | /* init */ |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 553 | if ((!file || !*file) && !has_driver_specific_opts) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 554 | BlockBackendRootState *blk_rs; |
| 555 | |
| 556 | blk = blk_new(qemu_opts_id(opts), errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 557 | if (!blk) { |
| 558 | goto early_err; |
| 559 | } |
| 560 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 561 | blk_rs = blk_get_root_state(blk); |
| 562 | blk_rs->open_flags = bdrv_flags; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 563 | blk_rs->read_only = !(bdrv_flags & BDRV_O_RDWR); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 564 | blk_rs->detect_zeroes = detect_zeroes; |
| 565 | |
| 566 | if (throttle_enabled(&cfg)) { |
| 567 | if (!throttling_group) { |
| 568 | throttling_group = blk_name(blk); |
| 569 | } |
| 570 | blk_rs->throttle_group = g_strdup(throttling_group); |
| 571 | blk_rs->throttle_state = throttle_group_incref(throttling_group); |
| 572 | blk_rs->throttle_state->cfg = cfg; |
| 573 | } |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 574 | |
| 575 | QDECREF(bs_opts); |
| 576 | } else { |
| 577 | if (file && !*file) { |
| 578 | file = NULL; |
| 579 | } |
| 580 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 581 | blk = blk_new_open(qemu_opts_id(opts), file, NULL, bs_opts, bdrv_flags, |
| 582 | errp); |
| 583 | if (!blk) { |
| 584 | goto err_no_bs_opts; |
| 585 | } |
| 586 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 587 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 588 | bs->detect_zeroes = detect_zeroes; |
| 589 | |
| 590 | /* disk I/O throttling */ |
| 591 | if (throttle_enabled(&cfg)) { |
| 592 | if (!throttling_group) { |
| 593 | throttling_group = blk_name(blk); |
| 594 | } |
| 595 | bdrv_io_limits_enable(bs, throttling_group); |
| 596 | bdrv_set_io_limits(bs, &cfg); |
| 597 | } |
| 598 | |
| 599 | if (bdrv_key_required(bs)) { |
| 600 | autostart = 0; |
| 601 | } |
| 602 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 603 | |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 604 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 605 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 606 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 607 | qemu_opts_del(opts); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 608 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 609 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 610 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 611 | qemu_opts_del(opts); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 612 | err_no_opts: |
| 613 | QDECREF(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 614 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 615 | } |
| 616 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 617 | static QemuOptsList qemu_root_bds_opts; |
| 618 | |
| 619 | /* Takes the ownership of bs_opts */ |
| 620 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
| 621 | { |
| 622 | BlockDriverState *bs; |
| 623 | QemuOpts *opts; |
| 624 | Error *local_error = NULL; |
| 625 | BlockdevDetectZeroesOptions detect_zeroes; |
| 626 | int ret; |
| 627 | int bdrv_flags = 0; |
| 628 | |
| 629 | opts = qemu_opts_create(&qemu_root_bds_opts, NULL, 1, errp); |
| 630 | if (!opts) { |
| 631 | goto fail; |
| 632 | } |
| 633 | |
| 634 | qemu_opts_absorb_qdict(opts, bs_opts, &local_error); |
| 635 | if (local_error) { |
| 636 | error_propagate(errp, local_error); |
| 637 | goto fail; |
| 638 | } |
| 639 | |
| 640 | extract_common_blockdev_options(opts, &bdrv_flags, NULL, NULL, |
| 641 | &detect_zeroes, &local_error); |
| 642 | if (local_error) { |
| 643 | error_propagate(errp, local_error); |
| 644 | goto fail; |
| 645 | } |
| 646 | |
| 647 | bs = NULL; |
| 648 | ret = bdrv_open(&bs, NULL, NULL, bs_opts, bdrv_flags, errp); |
| 649 | if (ret < 0) { |
| 650 | goto fail_no_bs_opts; |
| 651 | } |
| 652 | |
| 653 | bs->detect_zeroes = detect_zeroes; |
| 654 | |
| 655 | fail_no_bs_opts: |
| 656 | qemu_opts_del(opts); |
| 657 | return bs; |
| 658 | |
| 659 | fail: |
| 660 | qemu_opts_del(opts); |
| 661 | QDECREF(bs_opts); |
| 662 | return NULL; |
| 663 | } |
| 664 | |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 665 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
| 666 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 667 | { |
| 668 | const char *value; |
| 669 | |
| 670 | value = qemu_opt_get(opts, from); |
| 671 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 672 | if (qemu_opt_find(opts, to)) { |
| 673 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 674 | "same time", to, from); |
| 675 | return; |
| 676 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 677 | } |
| 678 | |
| 679 | /* rename all items in opts */ |
| 680 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 681 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 682 | qemu_opt_unset(opts, from); |
| 683 | } |
| 684 | } |
| 685 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 686 | QemuOptsList qemu_legacy_drive_opts = { |
| 687 | .name = "drive", |
| 688 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 689 | .desc = { |
| 690 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 691 | .name = "bus", |
| 692 | .type = QEMU_OPT_NUMBER, |
| 693 | .help = "bus number", |
| 694 | },{ |
| 695 | .name = "unit", |
| 696 | .type = QEMU_OPT_NUMBER, |
| 697 | .help = "unit number (i.e. lun for scsi)", |
| 698 | },{ |
| 699 | .name = "index", |
| 700 | .type = QEMU_OPT_NUMBER, |
| 701 | .help = "index number", |
| 702 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 703 | .name = "media", |
| 704 | .type = QEMU_OPT_STRING, |
| 705 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 706 | },{ |
| 707 | .name = "if", |
| 708 | .type = QEMU_OPT_STRING, |
| 709 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 710 | },{ |
| 711 | .name = "cyls", |
| 712 | .type = QEMU_OPT_NUMBER, |
| 713 | .help = "number of cylinders (ide disk geometry)", |
| 714 | },{ |
| 715 | .name = "heads", |
| 716 | .type = QEMU_OPT_NUMBER, |
| 717 | .help = "number of heads (ide disk geometry)", |
| 718 | },{ |
| 719 | .name = "secs", |
| 720 | .type = QEMU_OPT_NUMBER, |
| 721 | .help = "number of sectors (ide disk geometry)", |
| 722 | },{ |
| 723 | .name = "trans", |
| 724 | .type = QEMU_OPT_STRING, |
| 725 | .help = "chs translation (auto, lba, none)", |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 726 | },{ |
| 727 | .name = "boot", |
| 728 | .type = QEMU_OPT_BOOL, |
| 729 | .help = "(deprecated, ignored)", |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 730 | },{ |
| 731 | .name = "addr", |
| 732 | .type = QEMU_OPT_STRING, |
| 733 | .help = "pci address (virtio only)", |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 734 | },{ |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 735 | .name = "serial", |
| 736 | .type = QEMU_OPT_STRING, |
| 737 | .help = "disk serial number", |
| 738 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 739 | .name = "file", |
| 740 | .type = QEMU_OPT_STRING, |
| 741 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 742 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 743 | |
| 744 | /* Options that are passed on, but have special semantics with -drive */ |
| 745 | { |
| 746 | .name = "read-only", |
| 747 | .type = QEMU_OPT_BOOL, |
| 748 | .help = "open drive file as read-only", |
| 749 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 750 | .name = "rerror", |
| 751 | .type = QEMU_OPT_STRING, |
| 752 | .help = "read error action", |
| 753 | },{ |
| 754 | .name = "werror", |
| 755 | .type = QEMU_OPT_STRING, |
| 756 | .help = "write error action", |
| 757 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 758 | .name = "copy-on-read", |
| 759 | .type = QEMU_OPT_BOOL, |
| 760 | .help = "copy read data from backing file into image file", |
| 761 | }, |
| 762 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 763 | { /* end of list */ } |
| 764 | }, |
| 765 | }; |
| 766 | |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 767 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 768 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 769 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 770 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 771 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 772 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 773 | QemuOpts *legacy_opts; |
| 774 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 775 | BlockInterfaceType type; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 776 | int cyls, heads, secs, translation; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 777 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 778 | const char *devaddr; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 779 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 780 | bool read_only = false; |
| 781 | bool copy_on_read; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 782 | const char *serial; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 783 | const char *filename; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 784 | Error *local_err = NULL; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 785 | int i; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 786 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 787 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 788 | static const struct { |
| 789 | const char *from; |
| 790 | const char *to; |
| 791 | } opt_renames[] = { |
| 792 | { "iops", "throttling.iops-total" }, |
| 793 | { "iops_rd", "throttling.iops-read" }, |
| 794 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 795 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 796 | { "bps", "throttling.bps-total" }, |
| 797 | { "bps_rd", "throttling.bps-read" }, |
| 798 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 799 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 800 | { "iops_max", "throttling.iops-total-max" }, |
| 801 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 802 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 803 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 804 | { "bps_max", "throttling.bps-total-max" }, |
| 805 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 806 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 807 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 808 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 809 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 810 | { "group", "throttling.group" }, |
| 811 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 812 | { "readonly", "read-only" }, |
| 813 | }; |
| 814 | |
| 815 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 816 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
| 817 | &local_err); |
| 818 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 819 | error_report_err(local_err); |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 820 | return NULL; |
| 821 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 822 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 823 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 824 | value = qemu_opt_get(all_opts, "cache"); |
| 825 | if (value) { |
| 826 | int flags = 0; |
| 827 | |
| 828 | if (bdrv_parse_cache_flags(value, &flags) != 0) { |
| 829 | error_report("invalid cache option"); |
| 830 | return NULL; |
| 831 | } |
| 832 | |
| 833 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 834 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 835 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 836 | !!(flags & BDRV_O_CACHE_WB), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 837 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 838 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 839 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 840 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 841 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 842 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 843 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 844 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 845 | } |
| 846 | qemu_opt_unset(all_opts, "cache"); |
| 847 | } |
| 848 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 849 | /* Get a QDict for processing the options */ |
| 850 | bs_opts = qdict_new(); |
| 851 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 852 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 853 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 854 | &error_abort); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 855 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 856 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 857 | error_report_err(local_err); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 858 | goto fail; |
| 859 | } |
| 860 | |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 861 | /* Deprecated option boot=[on|off] */ |
| 862 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { |
| 863 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " |
| 864 | "ignored. Future versions will reject this parameter. Please " |
| 865 | "update your scripts.\n"); |
| 866 | } |
| 867 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 868 | /* Media type */ |
| 869 | value = qemu_opt_get(legacy_opts, "media"); |
| 870 | if (value) { |
| 871 | if (!strcmp(value, "disk")) { |
| 872 | media = MEDIA_DISK; |
| 873 | } else if (!strcmp(value, "cdrom")) { |
| 874 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 875 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 876 | } else { |
| 877 | error_report("'%s' invalid media", value); |
| 878 | goto fail; |
| 879 | } |
| 880 | } |
| 881 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 882 | /* copy-on-read is disabled with a warning for read-only devices */ |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 883 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 884 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 885 | |
| 886 | if (read_only && copy_on_read) { |
| 887 | error_report("warning: disabling copy-on-read on read-only drive"); |
| 888 | copy_on_read = false; |
| 889 | } |
| 890 | |
| 891 | qdict_put(bs_opts, "read-only", |
| 892 | qstring_from_str(read_only ? "on" : "off")); |
| 893 | qdict_put(bs_opts, "copy-on-read", |
| 894 | qstring_from_str(copy_on_read ? "on" :"off")); |
| 895 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 896 | /* Controller type */ |
| 897 | value = qemu_opt_get(legacy_opts, "if"); |
| 898 | if (value) { |
| 899 | for (type = 0; |
| 900 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 901 | type++) { |
| 902 | } |
| 903 | if (type == IF_COUNT) { |
| 904 | error_report("unsupported bus type '%s'", value); |
| 905 | goto fail; |
| 906 | } |
| 907 | } else { |
| 908 | type = block_default_type; |
| 909 | } |
| 910 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 911 | /* Geometry */ |
| 912 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); |
| 913 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); |
| 914 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); |
| 915 | |
| 916 | if (cyls || heads || secs) { |
| 917 | if (cyls < 1) { |
| 918 | error_report("invalid physical cyls number"); |
| 919 | goto fail; |
| 920 | } |
| 921 | if (heads < 1) { |
| 922 | error_report("invalid physical heads number"); |
| 923 | goto fail; |
| 924 | } |
| 925 | if (secs < 1) { |
| 926 | error_report("invalid physical secs number"); |
| 927 | goto fail; |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 932 | value = qemu_opt_get(legacy_opts, "trans"); |
| 933 | if (value != NULL) { |
| 934 | if (!cyls) { |
| 935 | error_report("'%s' trans must be used with cyls, heads and secs", |
| 936 | value); |
| 937 | goto fail; |
| 938 | } |
| 939 | if (!strcmp(value, "none")) { |
| 940 | translation = BIOS_ATA_TRANSLATION_NONE; |
| 941 | } else if (!strcmp(value, "lba")) { |
| 942 | translation = BIOS_ATA_TRANSLATION_LBA; |
Paolo Bonzini | f31c41f | 2014-02-08 11:01:54 +0100 | [diff] [blame] | 943 | } else if (!strcmp(value, "large")) { |
| 944 | translation = BIOS_ATA_TRANSLATION_LARGE; |
| 945 | } else if (!strcmp(value, "rechs")) { |
| 946 | translation = BIOS_ATA_TRANSLATION_RECHS; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 947 | } else if (!strcmp(value, "auto")) { |
| 948 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 949 | } else { |
| 950 | error_report("'%s' invalid translation type", value); |
| 951 | goto fail; |
| 952 | } |
| 953 | } |
| 954 | |
| 955 | if (media == MEDIA_CDROM) { |
| 956 | if (cyls || secs || heads) { |
| 957 | error_report("CHS can't be set with media=cdrom"); |
| 958 | goto fail; |
| 959 | } |
| 960 | } |
| 961 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 962 | /* Device address specified by bus/unit or index. |
| 963 | * If none was specified, try to find the first free one. */ |
| 964 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 965 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 966 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 967 | |
| 968 | max_devs = if_max_devs[type]; |
| 969 | |
| 970 | if (index != -1) { |
| 971 | if (bus_id != 0 || unit_id != -1) { |
| 972 | error_report("index cannot be used with bus and unit"); |
| 973 | goto fail; |
| 974 | } |
| 975 | bus_id = drive_index_to_bus_id(type, index); |
| 976 | unit_id = drive_index_to_unit_id(type, index); |
| 977 | } |
| 978 | |
| 979 | if (unit_id == -1) { |
| 980 | unit_id = 0; |
| 981 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 982 | unit_id++; |
| 983 | if (max_devs && unit_id >= max_devs) { |
| 984 | unit_id -= max_devs; |
| 985 | bus_id++; |
| 986 | } |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | if (max_devs && unit_id >= max_devs) { |
| 991 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); |
| 992 | goto fail; |
| 993 | } |
| 994 | |
| 995 | if (drive_get(type, bus_id, unit_id) != NULL) { |
| 996 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
| 997 | bus_id, unit_id, index); |
| 998 | goto fail; |
| 999 | } |
| 1000 | |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1001 | /* Serial number */ |
| 1002 | serial = qemu_opt_get(legacy_opts, "serial"); |
| 1003 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1004 | /* no id supplied -> create one */ |
| 1005 | if (qemu_opts_id(all_opts) == NULL) { |
| 1006 | char *new_id; |
| 1007 | const char *mediastr = ""; |
| 1008 | if (type == IF_IDE || type == IF_SCSI) { |
| 1009 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 1010 | } |
| 1011 | if (max_devs) { |
| 1012 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 1013 | mediastr, unit_id); |
| 1014 | } else { |
| 1015 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 1016 | mediastr, unit_id); |
| 1017 | } |
| 1018 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); |
| 1019 | g_free(new_id); |
| 1020 | } |
| 1021 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1022 | /* Add virtio block device */ |
| 1023 | devaddr = qemu_opt_get(legacy_opts, "addr"); |
| 1024 | if (devaddr && type != IF_VIRTIO) { |
| 1025 | error_report("addr is not supported by this bus type"); |
| 1026 | goto fail; |
| 1027 | } |
| 1028 | |
| 1029 | if (type == IF_VIRTIO) { |
| 1030 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 1031 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 1032 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1033 | if (arch_type == QEMU_ARCH_S390X) { |
Alexander Graf | 1f68f1d | 2015-06-16 23:06:33 +0200 | [diff] [blame] | 1034 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1035 | } else { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1036 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1037 | } |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1038 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 1039 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1040 | if (devaddr) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 1041 | qemu_opt_set(devopts, "addr", devaddr, &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1042 | } |
| 1043 | } |
| 1044 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 1045 | filename = qemu_opt_get(legacy_opts, "file"); |
| 1046 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1047 | /* Check werror/rerror compatibility with if=... */ |
| 1048 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 1049 | if (werror != NULL) { |
| 1050 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 1051 | type != IF_NONE) { |
| 1052 | error_report("werror is not supported by this bus type"); |
| 1053 | goto fail; |
| 1054 | } |
| 1055 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); |
| 1056 | } |
| 1057 | |
| 1058 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 1059 | if (rerror != NULL) { |
| 1060 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 1061 | type != IF_NONE) { |
| 1062 | error_report("rerror is not supported by this bus type"); |
| 1063 | goto fail; |
| 1064 | } |
| 1065 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); |
| 1066 | } |
| 1067 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1068 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1069 | blk = blockdev_init(filename, bs_opts, &local_err); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1070 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1071 | if (!blk) { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1072 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 1073 | error_report_err(local_err); |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 1074 | } |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1075 | goto fail; |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 1076 | } else { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1077 | assert(!local_err); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1078 | } |
| 1079 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1080 | /* Create legacy DriveInfo */ |
| 1081 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1082 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1083 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 1084 | dinfo->cyls = cyls; |
| 1085 | dinfo->heads = heads; |
| 1086 | dinfo->secs = secs; |
| 1087 | dinfo->trans = translation; |
| 1088 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1089 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1090 | dinfo->bus = bus_id; |
| 1091 | dinfo->unit = unit_id; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 1092 | dinfo->devaddr = devaddr; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1093 | dinfo->serial = g_strdup(serial); |
| 1094 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1095 | blk_set_legacy_dinfo(blk, dinfo); |
| 1096 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1097 | switch(type) { |
| 1098 | case IF_IDE: |
| 1099 | case IF_SCSI: |
| 1100 | case IF_XEN: |
| 1101 | case IF_NONE: |
| 1102 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1103 | break; |
| 1104 | default: |
| 1105 | break; |
| 1106 | } |
| 1107 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1108 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1109 | qemu_opts_del(legacy_opts); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1110 | QDECREF(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1111 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1112 | } |
| 1113 | |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame] | 1114 | void hmp_commit(Monitor *mon, const QDict *qdict) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1115 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1116 | const char *device = qdict_get_str(qdict, "device"); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1117 | BlockBackend *blk; |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 1118 | int ret; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1119 | |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1120 | if (!strcmp(device, "all")) { |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 1121 | ret = bdrv_commit_all(); |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1122 | } else { |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1123 | BlockDriverState *bs; |
| 1124 | AioContext *aio_context; |
| 1125 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1126 | blk = blk_by_name(device); |
| 1127 | if (!blk) { |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1128 | monitor_printf(mon, "Device '%s' not found\n", device); |
Markus Armbruster | ac59eb9 | 2010-06-02 18:55:19 +0200 | [diff] [blame] | 1129 | return; |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1130 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1131 | if (!blk_is_available(blk)) { |
| 1132 | monitor_printf(mon, "Device '%s' has no medium\n", device); |
| 1133 | return; |
| 1134 | } |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1135 | |
| 1136 | bs = blk_bs(blk); |
| 1137 | aio_context = bdrv_get_aio_context(bs); |
| 1138 | aio_context_acquire(aio_context); |
| 1139 | |
| 1140 | ret = bdrv_commit(bs); |
| 1141 | |
| 1142 | aio_context_release(aio_context); |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1143 | } |
| 1144 | if (ret < 0) { |
| 1145 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, |
| 1146 | strerror(-ret)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1147 | } |
| 1148 | } |
| 1149 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1150 | static void blockdev_do_action(TransactionActionKind type, void *data, |
| 1151 | Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1152 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1153 | TransactionAction action; |
| 1154 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1155 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1156 | action.type = type; |
| 1157 | action.u.data = data; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1158 | list.value = &action; |
| 1159 | list.next = NULL; |
| 1160 | qmp_transaction(&list, errp); |
| 1161 | } |
| 1162 | |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1163 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
| 1164 | bool has_node_name, const char *node_name, |
| 1165 | const char *snapshot_file, |
| 1166 | bool has_snapshot_node_name, |
| 1167 | const char *snapshot_node_name, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 1168 | bool has_format, const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1169 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1170 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1171 | BlockdevSnapshotSync snapshot = { |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1172 | .has_device = has_device, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1173 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1174 | .has_node_name = has_node_name, |
| 1175 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1176 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1177 | .has_snapshot_node_name = has_snapshot_node_name, |
| 1178 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1179 | .has_format = has_format, |
| 1180 | .format = (char *) format, |
| 1181 | .has_mode = has_mode, |
| 1182 | .mode = mode, |
| 1183 | }; |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1184 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
| 1185 | &snapshot, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1186 | } |
| 1187 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1188 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1189 | Error **errp) |
| 1190 | { |
| 1191 | BlockdevSnapshot snapshot_data = { |
| 1192 | .node = (char *) node, |
| 1193 | .overlay = (char *) overlay |
| 1194 | }; |
| 1195 | |
| 1196 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
| 1197 | &snapshot_data, errp); |
| 1198 | } |
| 1199 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1200 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1201 | const char *name, |
| 1202 | Error **errp) |
| 1203 | { |
| 1204 | BlockdevSnapshotInternal snapshot = { |
| 1205 | .device = (char *) device, |
| 1206 | .name = (char *) name |
| 1207 | }; |
| 1208 | |
| 1209 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
| 1210 | &snapshot, errp); |
| 1211 | } |
| 1212 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1213 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 1214 | bool has_id, |
| 1215 | const char *id, |
| 1216 | bool has_name, |
| 1217 | const char *name, |
| 1218 | Error **errp) |
| 1219 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1220 | BlockDriverState *bs; |
| 1221 | BlockBackend *blk; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1222 | AioContext *aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1223 | QEMUSnapshotInfo sn; |
| 1224 | Error *local_err = NULL; |
| 1225 | SnapshotInfo *info = NULL; |
| 1226 | int ret; |
| 1227 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1228 | blk = blk_by_name(device); |
| 1229 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1230 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1231 | "Device '%s' not found", device); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1232 | return NULL; |
| 1233 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1234 | |
| 1235 | aio_context = blk_get_aio_context(blk); |
| 1236 | aio_context_acquire(aio_context); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1237 | |
| 1238 | if (!has_id) { |
| 1239 | id = NULL; |
| 1240 | } |
| 1241 | |
| 1242 | if (!has_name) { |
| 1243 | name = NULL; |
| 1244 | } |
| 1245 | |
| 1246 | if (!id && !name) { |
| 1247 | error_setg(errp, "Name or id must be provided"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1248 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1249 | } |
| 1250 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1251 | if (!blk_is_available(blk)) { |
| 1252 | error_setg(errp, "Device '%s' has no medium", device); |
| 1253 | goto out_aio_context; |
| 1254 | } |
| 1255 | bs = blk_bs(blk); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1256 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1257 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
| 1258 | goto out_aio_context; |
| 1259 | } |
| 1260 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1261 | 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] | 1262 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1263 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1264 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1265 | } |
| 1266 | if (!ret) { |
| 1267 | error_setg(errp, |
| 1268 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1269 | "device '%s'", |
| 1270 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1271 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1272 | } |
| 1273 | |
| 1274 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1275 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1276 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1277 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1278 | } |
| 1279 | |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1280 | aio_context_release(aio_context); |
| 1281 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1282 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1283 | info->id = g_strdup(sn.id_str); |
| 1284 | info->name = g_strdup(sn.name); |
| 1285 | info->date_nsec = sn.date_nsec; |
| 1286 | info->date_sec = sn.date_sec; |
| 1287 | info->vm_state_size = sn.vm_state_size; |
| 1288 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1289 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
| 1290 | |
| 1291 | return info; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1292 | |
| 1293 | out_aio_context: |
| 1294 | aio_context_release(aio_context); |
| 1295 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1296 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1297 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1298 | /** |
| 1299 | * block_dirty_bitmap_lookup: |
| 1300 | * Return a dirty bitmap (if present), after validating |
| 1301 | * the node reference and bitmap names. |
| 1302 | * |
| 1303 | * @node: The name of the BDS node to search for bitmaps |
| 1304 | * @name: The name of the bitmap to search for |
| 1305 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. |
| 1306 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. |
| 1307 | * @errp: Output pointer for error information. Can be NULL. |
| 1308 | * |
| 1309 | * @return: A bitmap object on success, or NULL on failure. |
| 1310 | */ |
| 1311 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, |
| 1312 | const char *name, |
| 1313 | BlockDriverState **pbs, |
| 1314 | AioContext **paio, |
| 1315 | Error **errp) |
| 1316 | { |
| 1317 | BlockDriverState *bs; |
| 1318 | BdrvDirtyBitmap *bitmap; |
| 1319 | AioContext *aio_context; |
| 1320 | |
| 1321 | if (!node) { |
| 1322 | error_setg(errp, "Node cannot be NULL"); |
| 1323 | return NULL; |
| 1324 | } |
| 1325 | if (!name) { |
| 1326 | error_setg(errp, "Bitmap name cannot be NULL"); |
| 1327 | return NULL; |
| 1328 | } |
| 1329 | bs = bdrv_lookup_bs(node, node, NULL); |
| 1330 | if (!bs) { |
| 1331 | error_setg(errp, "Node '%s' not found", node); |
| 1332 | return NULL; |
| 1333 | } |
| 1334 | |
| 1335 | aio_context = bdrv_get_aio_context(bs); |
| 1336 | aio_context_acquire(aio_context); |
| 1337 | |
| 1338 | bitmap = bdrv_find_dirty_bitmap(bs, name); |
| 1339 | if (!bitmap) { |
| 1340 | error_setg(errp, "Dirty bitmap '%s' not found", name); |
| 1341 | goto fail; |
| 1342 | } |
| 1343 | |
| 1344 | if (pbs) { |
| 1345 | *pbs = bs; |
| 1346 | } |
| 1347 | if (paio) { |
| 1348 | *paio = aio_context; |
| 1349 | } else { |
| 1350 | aio_context_release(aio_context); |
| 1351 | } |
| 1352 | |
| 1353 | return bitmap; |
| 1354 | |
| 1355 | fail: |
| 1356 | aio_context_release(aio_context); |
| 1357 | return NULL; |
| 1358 | } |
| 1359 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1360 | /* New and old BlockDriverState structs for atomic group operations */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1361 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1362 | typedef struct BlkTransactionState BlkTransactionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1363 | |
| 1364 | /* Only prepare() may fail. In a single transaction, only one of commit() or |
| 1365 | abort() will be called, clean() will always be called if it present. */ |
| 1366 | typedef struct BdrvActionOps { |
| 1367 | /* Size of state struct, in bytes. */ |
| 1368 | size_t instance_size; |
| 1369 | /* Prepare the work, must NOT be NULL. */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1370 | void (*prepare)(BlkTransactionState *common, Error **errp); |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 1371 | /* Commit the changes, can be NULL. */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1372 | void (*commit)(BlkTransactionState *common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1373 | /* Abort the changes on fail, can be NULL. */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1374 | void (*abort)(BlkTransactionState *common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1375 | /* Clean up resource in the end, can be NULL. */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1376 | void (*clean)(BlkTransactionState *common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1377 | } BdrvActionOps; |
| 1378 | |
| 1379 | /* |
| 1380 | * This structure must be arranged as first member in child type, assuming |
| 1381 | * that compiler will also arrange it to the same address with parent instance. |
| 1382 | * Later it will be used in free(). |
| 1383 | */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1384 | struct BlkTransactionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1385 | TransactionAction *action; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1386 | const BdrvActionOps *ops; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1387 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1388 | }; |
| 1389 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1390 | /* internal snapshot private data */ |
| 1391 | typedef struct InternalSnapshotState { |
| 1392 | BlkTransactionState common; |
| 1393 | BlockDriverState *bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1394 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1395 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1396 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1397 | } InternalSnapshotState; |
| 1398 | |
| 1399 | static void internal_snapshot_prepare(BlkTransactionState *common, |
| 1400 | Error **errp) |
| 1401 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1402 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1403 | const char *device; |
| 1404 | const char *name; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1405 | BlockBackend *blk; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1406 | BlockDriverState *bs; |
| 1407 | QEMUSnapshotInfo old_sn, *sn; |
| 1408 | bool ret; |
| 1409 | qemu_timeval tv; |
| 1410 | BlockdevSnapshotInternal *internal; |
| 1411 | InternalSnapshotState *state; |
| 1412 | int ret1; |
| 1413 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1414 | g_assert(common->action->type == |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1415 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1416 | internal = common->action->u.blockdev_snapshot_internal_sync; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1417 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1418 | |
| 1419 | /* 1. parse input */ |
| 1420 | device = internal->device; |
| 1421 | name = internal->name; |
| 1422 | |
| 1423 | /* 2. check for validation */ |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1424 | blk = blk_by_name(device); |
| 1425 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1426 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1427 | "Device '%s' not found", device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1428 | return; |
| 1429 | } |
| 1430 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1431 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1432 | state->aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1433 | aio_context_acquire(state->aio_context); |
| 1434 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1435 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1436 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1437 | return; |
| 1438 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1439 | bs = blk_bs(blk); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1440 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1441 | state->bs = bs; |
| 1442 | bdrv_drained_begin(bs); |
| 1443 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1444 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
| 1445 | return; |
| 1446 | } |
| 1447 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1448 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1449 | error_setg(errp, "Device '%s' is read only", device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1450 | return; |
| 1451 | } |
| 1452 | |
| 1453 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1454 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1455 | "does not support internal snapshots", |
| 1456 | bs->drv->format_name, device); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1457 | return; |
| 1458 | } |
| 1459 | |
| 1460 | if (!strlen(name)) { |
| 1461 | error_setg(errp, "Name is empty"); |
| 1462 | return; |
| 1463 | } |
| 1464 | |
| 1465 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1466 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1467 | &local_err); |
| 1468 | if (local_err) { |
| 1469 | error_propagate(errp, local_err); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1470 | return; |
| 1471 | } else if (ret) { |
| 1472 | error_setg(errp, |
| 1473 | "Snapshot with name '%s' already exists on device '%s'", |
| 1474 | name, device); |
| 1475 | return; |
| 1476 | } |
| 1477 | |
| 1478 | /* 3. take the snapshot */ |
| 1479 | sn = &state->sn; |
| 1480 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1481 | qemu_gettimeofday(&tv); |
| 1482 | sn->date_sec = tv.tv_sec; |
| 1483 | sn->date_nsec = tv.tv_usec * 1000; |
| 1484 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1485 | |
| 1486 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1487 | if (ret1 < 0) { |
| 1488 | error_setg_errno(errp, -ret1, |
| 1489 | "Failed to create snapshot '%s' on device '%s'", |
| 1490 | name, device); |
| 1491 | return; |
| 1492 | } |
| 1493 | |
| 1494 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1495 | state->created = true; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1496 | } |
| 1497 | |
| 1498 | static void internal_snapshot_abort(BlkTransactionState *common) |
| 1499 | { |
| 1500 | InternalSnapshotState *state = |
| 1501 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1502 | BlockDriverState *bs = state->bs; |
| 1503 | QEMUSnapshotInfo *sn = &state->sn; |
| 1504 | Error *local_error = NULL; |
| 1505 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1506 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1507 | return; |
| 1508 | } |
| 1509 | |
| 1510 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { |
| 1511 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " |
| 1512 | "device '%s' in abort: %s", |
| 1513 | sn->id_str, |
| 1514 | sn->name, |
| 1515 | bdrv_get_device_name(bs), |
| 1516 | error_get_pretty(local_error)); |
| 1517 | error_free(local_error); |
| 1518 | } |
| 1519 | } |
| 1520 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1521 | static void internal_snapshot_clean(BlkTransactionState *common) |
| 1522 | { |
| 1523 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, |
| 1524 | common, common); |
| 1525 | |
| 1526 | if (state->aio_context) { |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1527 | if (state->bs) { |
| 1528 | bdrv_drained_end(state->bs); |
| 1529 | } |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1530 | aio_context_release(state->aio_context); |
| 1531 | } |
| 1532 | } |
| 1533 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1534 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1535 | typedef struct ExternalSnapshotState { |
| 1536 | BlkTransactionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1537 | BlockDriverState *old_bs; |
| 1538 | BlockDriverState *new_bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1539 | AioContext *aio_context; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1540 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1541 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1542 | static void external_snapshot_prepare(BlkTransactionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1543 | Error **errp) |
| 1544 | { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1545 | int flags = 0, ret; |
| 1546 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1547 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1548 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1549 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1550 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1551 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1552 | const char *snapshot_ref; |
| 1553 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1554 | const char *new_image_file; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1555 | ExternalSnapshotState *state = |
| 1556 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1557 | TransactionAction *action = common->action; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1558 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1559 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1560 | * purpose but a different set of parameters */ |
| 1561 | switch (action->type) { |
| 1562 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1563 | { |
| 1564 | BlockdevSnapshot *s = action->u.blockdev_snapshot; |
| 1565 | device = s->node; |
| 1566 | node_name = s->node; |
| 1567 | new_image_file = NULL; |
| 1568 | snapshot_ref = s->overlay; |
| 1569 | } |
| 1570 | break; |
| 1571 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1572 | { |
| 1573 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync; |
| 1574 | device = s->has_device ? s->device : NULL; |
| 1575 | node_name = s->has_node_name ? s->node_name : NULL; |
| 1576 | new_image_file = s->snapshot_file; |
| 1577 | snapshot_ref = NULL; |
| 1578 | } |
| 1579 | break; |
| 1580 | default: |
| 1581 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | /* start processing */ |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1585 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1586 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1587 | return; |
| 1588 | } |
| 1589 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1590 | /* Acquire AioContext now so any threads operating on old_bs stop */ |
| 1591 | state->aio_context = bdrv_get_aio_context(state->old_bs); |
| 1592 | aio_context_acquire(state->aio_context); |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1593 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1594 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1595 | if (!bdrv_is_inserted(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1596 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1597 | return; |
| 1598 | } |
| 1599 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1600 | if (bdrv_op_is_blocked(state->old_bs, |
| 1601 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1602 | return; |
| 1603 | } |
| 1604 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1605 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1606 | if (bdrv_flush(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1607 | error_setg(errp, QERR_IO_ERROR); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1608 | return; |
| 1609 | } |
| 1610 | } |
| 1611 | |
Benoît Canet | 212a5a8 | 2014-01-23 21:31:36 +0100 | [diff] [blame] | 1612 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1613 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
Benoît Canet | f6186f4 | 2013-10-02 14:33:48 +0200 | [diff] [blame] | 1614 | return; |
| 1615 | } |
| 1616 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1617 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
| 1618 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync; |
| 1619 | const char *format = s->has_format ? s->format : "qcow2"; |
| 1620 | enum NewImageMode mode; |
| 1621 | const char *snapshot_node_name = |
| 1622 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1623 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1624 | if (node_name && !snapshot_node_name) { |
| 1625 | error_setg(errp, "New snapshot node name missing"); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1626 | return; |
| 1627 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1628 | |
| 1629 | if (snapshot_node_name && |
| 1630 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
| 1631 | error_setg(errp, "New snapshot node name already in use"); |
| 1632 | return; |
| 1633 | } |
| 1634 | |
| 1635 | flags = state->old_bs->open_flags; |
| 1636 | |
| 1637 | /* create new image w/backing file */ |
| 1638 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1639 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
| 1640 | bdrv_img_create(new_image_file, format, |
| 1641 | state->old_bs->filename, |
| 1642 | state->old_bs->drv->format_name, |
| 1643 | NULL, -1, flags, &local_err, false); |
| 1644 | if (local_err) { |
| 1645 | error_propagate(errp, local_err); |
| 1646 | return; |
| 1647 | } |
| 1648 | } |
| 1649 | |
| 1650 | options = qdict_new(); |
| 1651 | if (s->has_snapshot_node_name) { |
| 1652 | qdict_put(options, "node-name", |
| 1653 | qstring_from_str(snapshot_node_name)); |
| 1654 | } |
| 1655 | qdict_put(options, "driver", qstring_from_str(format)); |
| 1656 | |
| 1657 | flags |= BDRV_O_NO_BACKING; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1658 | } |
| 1659 | |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1660 | assert(state->new_bs == NULL); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1661 | ret = bdrv_open(&state->new_bs, new_image_file, snapshot_ref, options, |
| 1662 | flags, errp); |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1663 | /* We will manually add the backing_hd field to the bs later */ |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1664 | if (ret != 0) { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1665 | return; |
| 1666 | } |
| 1667 | |
| 1668 | if (state->new_bs->blk != NULL) { |
| 1669 | error_setg(errp, "The snapshot is already in use by %s", |
| 1670 | blk_name(state->new_bs->blk)); |
| 1671 | return; |
| 1672 | } |
| 1673 | |
| 1674 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, |
| 1675 | errp)) { |
| 1676 | return; |
| 1677 | } |
| 1678 | |
| 1679 | if (state->new_bs->backing != NULL) { |
| 1680 | error_setg(errp, "The snapshot already has a backing image"); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1681 | } |
| 1682 | } |
| 1683 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1684 | static void external_snapshot_commit(BlkTransactionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1685 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1686 | ExternalSnapshotState *state = |
| 1687 | DO_UPCAST(ExternalSnapshotState, common, common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1688 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1689 | bdrv_set_aio_context(state->new_bs, state->aio_context); |
| 1690 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1691 | /* This removes our old bs and adds the new bs */ |
| 1692 | bdrv_append(state->new_bs, state->old_bs); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1693 | /* We don't need (or want) to use the transactional |
| 1694 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1695 | * 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] | 1696 | 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] | 1697 | NULL); |
| 1698 | } |
| 1699 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1700 | static void external_snapshot_abort(BlkTransactionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1701 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1702 | ExternalSnapshotState *state = |
| 1703 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1704 | if (state->new_bs) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 1705 | bdrv_unref(state->new_bs); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1706 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1707 | } |
| 1708 | |
| 1709 | static void external_snapshot_clean(BlkTransactionState *common) |
| 1710 | { |
| 1711 | ExternalSnapshotState *state = |
| 1712 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1713 | if (state->aio_context) { |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1714 | bdrv_drained_end(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1715 | aio_context_release(state->aio_context); |
| 1716 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1717 | } |
| 1718 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1719 | typedef struct DriveBackupState { |
| 1720 | BlkTransactionState common; |
| 1721 | BlockDriverState *bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1722 | AioContext *aio_context; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1723 | BlockJob *job; |
| 1724 | } DriveBackupState; |
| 1725 | |
| 1726 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) |
| 1727 | { |
| 1728 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1729 | BlockBackend *blk; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1730 | DriveBackup *backup; |
| 1731 | Error *local_err = NULL; |
| 1732 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1733 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
| 1734 | backup = common->action->u.drive_backup; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1735 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1736 | blk = blk_by_name(backup->device); |
| 1737 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 1738 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1739 | "Device '%s' not found", backup->device); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1740 | return; |
| 1741 | } |
| 1742 | |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1743 | if (!blk_is_available(blk)) { |
| 1744 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); |
| 1745 | return; |
| 1746 | } |
| 1747 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1748 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1749 | state->aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1750 | aio_context_acquire(state->aio_context); |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1751 | bdrv_drained_begin(blk_bs(blk)); |
| 1752 | state->bs = blk_bs(blk); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1753 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1754 | qmp_drive_backup(backup->device, backup->target, |
| 1755 | backup->has_format, backup->format, |
Stefan Hajnoczi | b53169e | 2013-06-26 14:11:57 +0200 | [diff] [blame] | 1756 | backup->sync, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1757 | backup->has_mode, backup->mode, |
| 1758 | backup->has_speed, backup->speed, |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 1759 | backup->has_bitmap, backup->bitmap, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1760 | backup->has_on_source_error, backup->on_source_error, |
| 1761 | backup->has_on_target_error, backup->on_target_error, |
| 1762 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1763 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1764 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1765 | return; |
| 1766 | } |
| 1767 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1768 | state->job = state->bs->job; |
| 1769 | } |
| 1770 | |
| 1771 | static void drive_backup_abort(BlkTransactionState *common) |
| 1772 | { |
| 1773 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1774 | BlockDriverState *bs = state->bs; |
| 1775 | |
| 1776 | /* Only cancel if it's the job we started */ |
| 1777 | if (bs && bs->job && bs->job == state->job) { |
| 1778 | block_job_cancel_sync(bs->job); |
| 1779 | } |
| 1780 | } |
| 1781 | |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1782 | static void drive_backup_clean(BlkTransactionState *common) |
| 1783 | { |
| 1784 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1785 | |
| 1786 | if (state->aio_context) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1787 | bdrv_drained_end(state->bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1788 | aio_context_release(state->aio_context); |
| 1789 | } |
| 1790 | } |
| 1791 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1792 | typedef struct BlockdevBackupState { |
| 1793 | BlkTransactionState common; |
| 1794 | BlockDriverState *bs; |
| 1795 | BlockJob *job; |
| 1796 | AioContext *aio_context; |
| 1797 | } BlockdevBackupState; |
| 1798 | |
| 1799 | static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp) |
| 1800 | { |
| 1801 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1802 | BlockdevBackup *backup; |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1803 | BlockBackend *blk, *target; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1804 | Error *local_err = NULL; |
| 1805 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1806 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
| 1807 | backup = common->action->u.blockdev_backup; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1808 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1809 | blk = blk_by_name(backup->device); |
| 1810 | if (!blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 1811 | error_setg(errp, "Device '%s' not found", backup->device); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1812 | return; |
| 1813 | } |
| 1814 | |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1815 | if (!blk_is_available(blk)) { |
| 1816 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); |
| 1817 | return; |
| 1818 | } |
| 1819 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1820 | target = blk_by_name(backup->target); |
| 1821 | if (!target) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 1822 | error_setg(errp, "Device '%s' not found", backup->target); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1823 | return; |
| 1824 | } |
| 1825 | |
| 1826 | /* AioContext is released in .clean() */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1827 | state->aio_context = blk_get_aio_context(blk); |
| 1828 | if (state->aio_context != blk_get_aio_context(target)) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1829 | state->aio_context = NULL; |
| 1830 | error_setg(errp, "Backup between two IO threads is not implemented"); |
| 1831 | return; |
| 1832 | } |
| 1833 | aio_context_acquire(state->aio_context); |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1834 | state->bs = blk_bs(blk); |
| 1835 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1836 | |
| 1837 | qmp_blockdev_backup(backup->device, backup->target, |
| 1838 | backup->sync, |
| 1839 | backup->has_speed, backup->speed, |
| 1840 | backup->has_on_source_error, backup->on_source_error, |
| 1841 | backup->has_on_target_error, backup->on_target_error, |
| 1842 | &local_err); |
| 1843 | if (local_err) { |
| 1844 | error_propagate(errp, local_err); |
| 1845 | return; |
| 1846 | } |
| 1847 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1848 | state->job = state->bs->job; |
| 1849 | } |
| 1850 | |
| 1851 | static void blockdev_backup_abort(BlkTransactionState *common) |
| 1852 | { |
| 1853 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1854 | BlockDriverState *bs = state->bs; |
| 1855 | |
| 1856 | /* Only cancel if it's the job we started */ |
| 1857 | if (bs && bs->job && bs->job == state->job) { |
| 1858 | block_job_cancel_sync(bs->job); |
| 1859 | } |
| 1860 | } |
| 1861 | |
| 1862 | static void blockdev_backup_clean(BlkTransactionState *common) |
| 1863 | { |
| 1864 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1865 | |
| 1866 | if (state->aio_context) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1867 | bdrv_drained_end(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1868 | aio_context_release(state->aio_context); |
| 1869 | } |
| 1870 | } |
| 1871 | |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 1872 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
| 1873 | { |
| 1874 | error_setg(errp, "Transaction aborted using Abort action"); |
| 1875 | } |
| 1876 | |
| 1877 | static void abort_commit(BlkTransactionState *common) |
| 1878 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 1879 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 1880 | } |
| 1881 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1882 | static const BdrvActionOps actions[] = { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame^] | 1883 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
| 1884 | .instance_size = sizeof(ExternalSnapshotState), |
| 1885 | .prepare = external_snapshot_prepare, |
| 1886 | .commit = external_snapshot_commit, |
| 1887 | .abort = external_snapshot_abort, |
| 1888 | }, |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1889 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1890 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1891 | .prepare = external_snapshot_prepare, |
| 1892 | .commit = external_snapshot_commit, |
| 1893 | .abort = external_snapshot_abort, |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1894 | .clean = external_snapshot_clean, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1895 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1896 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 1897 | .instance_size = sizeof(DriveBackupState), |
| 1898 | .prepare = drive_backup_prepare, |
| 1899 | .abort = drive_backup_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1900 | .clean = drive_backup_clean, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1901 | }, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1902 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
| 1903 | .instance_size = sizeof(BlockdevBackupState), |
| 1904 | .prepare = blockdev_backup_prepare, |
| 1905 | .abort = blockdev_backup_abort, |
| 1906 | .clean = blockdev_backup_clean, |
| 1907 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 1908 | [TRANSACTION_ACTION_KIND_ABORT] = { |
| 1909 | .instance_size = sizeof(BlkTransactionState), |
| 1910 | .prepare = abort_prepare, |
| 1911 | .commit = abort_commit, |
| 1912 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1913 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 1914 | .instance_size = sizeof(InternalSnapshotState), |
| 1915 | .prepare = internal_snapshot_prepare, |
| 1916 | .abort = internal_snapshot_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1917 | .clean = internal_snapshot_clean, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1918 | }, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1919 | }; |
| 1920 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1921 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1922 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 1923 | * any fail then we roll back all operations in the group. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1924 | */ |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1925 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1926 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1927 | TransactionActionList *dev_entry = dev_list; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1928 | BlkTransactionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 1929 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1930 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1931 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1932 | QSIMPLEQ_INIT(&snap_bdrv_states); |
| 1933 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1934 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1935 | bdrv_drain_all(); |
| 1936 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1937 | /* 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] | 1938 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1939 | TransactionAction *dev_info = NULL; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1940 | const BdrvActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 1941 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1942 | dev_info = dev_entry->value; |
| 1943 | dev_entry = dev_entry->next; |
| 1944 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1945 | assert(dev_info->type < ARRAY_SIZE(actions)); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1946 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1947 | ops = &actions[dev_info->type]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 1948 | assert(ops->instance_size > 0); |
| 1949 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1950 | state = g_malloc0(ops->instance_size); |
| 1951 | state->ops = ops; |
| 1952 | state->action = dev_info; |
| 1953 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1954 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1955 | state->ops->prepare(state, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1956 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1957 | error_propagate(errp, local_err); |
| 1958 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 1959 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1960 | } |
| 1961 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1962 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 1963 | if (state->ops->commit) { |
| 1964 | state->ops->commit(state); |
| 1965 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1966 | } |
| 1967 | |
| 1968 | /* success */ |
| 1969 | goto exit; |
| 1970 | |
| 1971 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1972 | /* failure, and it is all-or-none; roll back all operations */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1973 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
| 1974 | if (state->ops->abort) { |
| 1975 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1976 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1977 | } |
| 1978 | exit: |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1979 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
| 1980 | if (state->ops->clean) { |
| 1981 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1982 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1983 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1984 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1985 | } |
| 1986 | |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 1987 | 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] | 1988 | { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 1989 | Error *local_err = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1990 | |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 1991 | qmp_blockdev_open_tray(device, has_force, force, &local_err); |
| 1992 | if (local_err) { |
| 1993 | error_propagate(errp, local_err); |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 1994 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1995 | } |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1996 | |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 1997 | qmp_blockdev_remove_medium(device, errp); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1998 | } |
| 1999 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2000 | void qmp_block_passwd(bool has_device, const char *device, |
| 2001 | bool has_node_name, const char *node_name, |
| 2002 | const char *password, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2003 | { |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2004 | Error *local_err = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2005 | BlockDriverState *bs; |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2006 | AioContext *aio_context; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2007 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2008 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 2009 | has_node_name ? node_name : NULL, |
| 2010 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2011 | if (local_err) { |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2012 | error_propagate(errp, local_err); |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 2013 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2014 | } |
| 2015 | |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2016 | aio_context = bdrv_get_aio_context(bs); |
| 2017 | aio_context_acquire(aio_context); |
| 2018 | |
Markus Armbruster | 4d2855a | 2015-01-29 10:37:00 +0100 | [diff] [blame] | 2019 | bdrv_add_key(bs, password, errp); |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2020 | |
Stefan Hajnoczi | e344209 | 2014-11-19 14:19:44 +0000 | [diff] [blame] | 2021 | aio_context_release(aio_context); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2022 | } |
| 2023 | |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2024 | void qmp_blockdev_open_tray(const char *device, bool has_force, bool force, |
| 2025 | Error **errp) |
| 2026 | { |
| 2027 | BlockBackend *blk; |
| 2028 | bool locked; |
| 2029 | |
| 2030 | if (!has_force) { |
| 2031 | force = false; |
| 2032 | } |
| 2033 | |
| 2034 | blk = blk_by_name(device); |
| 2035 | if (!blk) { |
| 2036 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2037 | "Device '%s' not found", device); |
| 2038 | return; |
| 2039 | } |
| 2040 | |
| 2041 | if (!blk_dev_has_removable_media(blk)) { |
| 2042 | error_setg(errp, "Device '%s' is not removable", device); |
| 2043 | return; |
| 2044 | } |
| 2045 | |
| 2046 | if (blk_dev_is_tray_open(blk)) { |
| 2047 | return; |
| 2048 | } |
| 2049 | |
| 2050 | locked = blk_dev_is_medium_locked(blk); |
| 2051 | if (locked) { |
| 2052 | blk_dev_eject_request(blk, force); |
| 2053 | } |
| 2054 | |
| 2055 | if (!locked || force) { |
| 2056 | blk_dev_change_media_cb(blk, false); |
| 2057 | } |
| 2058 | } |
| 2059 | |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2060 | void qmp_blockdev_close_tray(const char *device, Error **errp) |
| 2061 | { |
| 2062 | BlockBackend *blk; |
| 2063 | |
| 2064 | blk = blk_by_name(device); |
| 2065 | if (!blk) { |
| 2066 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2067 | "Device '%s' not found", device); |
| 2068 | return; |
| 2069 | } |
| 2070 | |
| 2071 | if (!blk_dev_has_removable_media(blk)) { |
| 2072 | error_setg(errp, "Device '%s' is not removable", device); |
| 2073 | return; |
| 2074 | } |
| 2075 | |
| 2076 | if (!blk_dev_is_tray_open(blk)) { |
| 2077 | return; |
| 2078 | } |
| 2079 | |
| 2080 | blk_dev_change_media_cb(blk, true); |
| 2081 | } |
| 2082 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2083 | void qmp_blockdev_remove_medium(const char *device, Error **errp) |
| 2084 | { |
| 2085 | BlockBackend *blk; |
| 2086 | BlockDriverState *bs; |
| 2087 | AioContext *aio_context; |
| 2088 | bool has_device; |
| 2089 | |
| 2090 | blk = blk_by_name(device); |
| 2091 | if (!blk) { |
| 2092 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2093 | "Device '%s' not found", device); |
| 2094 | return; |
| 2095 | } |
| 2096 | |
| 2097 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2098 | has_device = blk_get_attached_dev(blk); |
| 2099 | |
| 2100 | if (has_device && !blk_dev_has_removable_media(blk)) { |
| 2101 | error_setg(errp, "Device '%s' is not removable", device); |
| 2102 | return; |
| 2103 | } |
| 2104 | |
| 2105 | if (has_device && !blk_dev_is_tray_open(blk)) { |
| 2106 | error_setg(errp, "Tray of device '%s' is not open", device); |
| 2107 | return; |
| 2108 | } |
| 2109 | |
| 2110 | bs = blk_bs(blk); |
| 2111 | if (!bs) { |
| 2112 | return; |
| 2113 | } |
| 2114 | |
| 2115 | aio_context = bdrv_get_aio_context(bs); |
| 2116 | aio_context_acquire(aio_context); |
| 2117 | |
| 2118 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
| 2119 | goto out; |
| 2120 | } |
| 2121 | |
| 2122 | /* This follows the convention established by bdrv_make_anon() */ |
| 2123 | if (bs->device_list.tqe_prev) { |
| 2124 | QTAILQ_REMOVE(&bdrv_states, bs, device_list); |
| 2125 | bs->device_list.tqe_prev = NULL; |
| 2126 | } |
| 2127 | |
| 2128 | blk_remove_bs(blk); |
| 2129 | |
| 2130 | out: |
| 2131 | aio_context_release(aio_context); |
| 2132 | } |
| 2133 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2134 | static void qmp_blockdev_insert_anon_medium(const char *device, |
| 2135 | BlockDriverState *bs, Error **errp) |
| 2136 | { |
| 2137 | BlockBackend *blk; |
| 2138 | bool has_device; |
| 2139 | |
| 2140 | blk = blk_by_name(device); |
| 2141 | if (!blk) { |
| 2142 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2143 | "Device '%s' not found", device); |
| 2144 | return; |
| 2145 | } |
| 2146 | |
| 2147 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2148 | has_device = blk_get_attached_dev(blk); |
| 2149 | |
| 2150 | if (has_device && !blk_dev_has_removable_media(blk)) { |
| 2151 | error_setg(errp, "Device '%s' is not removable", device); |
| 2152 | return; |
| 2153 | } |
| 2154 | |
| 2155 | if (has_device && !blk_dev_is_tray_open(blk)) { |
| 2156 | error_setg(errp, "Tray of device '%s' is not open", device); |
| 2157 | return; |
| 2158 | } |
| 2159 | |
| 2160 | if (blk_bs(blk)) { |
| 2161 | error_setg(errp, "There already is a medium in device '%s'", device); |
| 2162 | return; |
| 2163 | } |
| 2164 | |
| 2165 | blk_insert_bs(blk, bs); |
| 2166 | |
| 2167 | QTAILQ_INSERT_TAIL(&bdrv_states, bs, device_list); |
| 2168 | } |
| 2169 | |
| 2170 | void qmp_blockdev_insert_medium(const char *device, const char *node_name, |
| 2171 | Error **errp) |
| 2172 | { |
| 2173 | BlockDriverState *bs; |
| 2174 | |
| 2175 | bs = bdrv_find_node(node_name); |
| 2176 | if (!bs) { |
| 2177 | error_setg(errp, "Node '%s' not found", node_name); |
| 2178 | return; |
| 2179 | } |
| 2180 | |
| 2181 | if (bs->blk) { |
| 2182 | error_setg(errp, "Node '%s' is already in use by '%s'", node_name, |
| 2183 | blk_name(bs->blk)); |
| 2184 | return; |
| 2185 | } |
| 2186 | |
| 2187 | qmp_blockdev_insert_anon_medium(device, bs, errp); |
| 2188 | } |
| 2189 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2190 | void qmp_blockdev_change_medium(const char *device, const char *filename, |
| 2191 | bool has_format, const char *format, |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2192 | bool has_read_only, |
| 2193 | BlockdevChangeReadOnlyMode read_only, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2194 | Error **errp) |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2195 | { |
| 2196 | BlockBackend *blk; |
| 2197 | BlockDriverState *medium_bs = NULL; |
| 2198 | int bdrv_flags, ret; |
| 2199 | QDict *options = NULL; |
| 2200 | Error *err = NULL; |
| 2201 | |
| 2202 | blk = blk_by_name(device); |
| 2203 | if (!blk) { |
| 2204 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2205 | "Device '%s' not found", device); |
| 2206 | goto fail; |
| 2207 | } |
| 2208 | |
| 2209 | if (blk_bs(blk)) { |
| 2210 | blk_update_root_state(blk); |
| 2211 | } |
| 2212 | |
| 2213 | bdrv_flags = blk_get_open_flags_from_root_state(blk); |
| 2214 | |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2215 | if (!has_read_only) { |
| 2216 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; |
| 2217 | } |
| 2218 | |
| 2219 | switch (read_only) { |
| 2220 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: |
| 2221 | break; |
| 2222 | |
| 2223 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: |
| 2224 | bdrv_flags &= ~BDRV_O_RDWR; |
| 2225 | break; |
| 2226 | |
| 2227 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: |
| 2228 | bdrv_flags |= BDRV_O_RDWR; |
| 2229 | break; |
| 2230 | |
| 2231 | default: |
| 2232 | abort(); |
| 2233 | } |
| 2234 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2235 | if (has_format) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2236 | options = qdict_new(); |
| 2237 | qdict_put(options, "driver", qstring_from_str(format)); |
| 2238 | } |
| 2239 | |
| 2240 | assert(!medium_bs); |
| 2241 | ret = bdrv_open(&medium_bs, filename, NULL, options, bdrv_flags, errp); |
| 2242 | if (ret < 0) { |
| 2243 | goto fail; |
| 2244 | } |
| 2245 | |
| 2246 | blk_apply_root_state(blk, medium_bs); |
| 2247 | |
| 2248 | bdrv_add_key(medium_bs, NULL, &err); |
| 2249 | if (err) { |
| 2250 | error_propagate(errp, err); |
| 2251 | goto fail; |
| 2252 | } |
| 2253 | |
| 2254 | qmp_blockdev_open_tray(device, false, false, &err); |
| 2255 | if (err) { |
| 2256 | error_propagate(errp, err); |
| 2257 | goto fail; |
| 2258 | } |
| 2259 | |
| 2260 | qmp_blockdev_remove_medium(device, &err); |
| 2261 | if (err) { |
| 2262 | error_propagate(errp, err); |
| 2263 | goto fail; |
| 2264 | } |
| 2265 | |
| 2266 | qmp_blockdev_insert_anon_medium(device, medium_bs, &err); |
| 2267 | if (err) { |
| 2268 | error_propagate(errp, err); |
| 2269 | goto fail; |
| 2270 | } |
| 2271 | |
| 2272 | qmp_blockdev_close_tray(device, errp); |
| 2273 | |
| 2274 | fail: |
| 2275 | /* If the medium has been inserted, the device has its own reference, so |
| 2276 | * ours must be relinquished; and if it has not been inserted successfully, |
| 2277 | * the reference must be relinquished anyway */ |
| 2278 | bdrv_unref(medium_bs); |
| 2279 | } |
| 2280 | |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2281 | /* throttling disk I/O limits */ |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2282 | 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] | 2283 | int64_t bps_wr, |
| 2284 | int64_t iops, |
| 2285 | int64_t iops_rd, |
| 2286 | int64_t iops_wr, |
| 2287 | bool has_bps_max, |
| 2288 | int64_t bps_max, |
| 2289 | bool has_bps_rd_max, |
| 2290 | int64_t bps_rd_max, |
| 2291 | bool has_bps_wr_max, |
| 2292 | int64_t bps_wr_max, |
| 2293 | bool has_iops_max, |
| 2294 | int64_t iops_max, |
| 2295 | bool has_iops_rd_max, |
| 2296 | int64_t iops_rd_max, |
| 2297 | bool has_iops_wr_max, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2298 | int64_t iops_wr_max, |
| 2299 | bool has_iops_size, |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2300 | int64_t iops_size, |
| 2301 | bool has_group, |
| 2302 | const char *group, Error **errp) |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2303 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2304 | ThrottleConfig cfg; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2305 | BlockDriverState *bs; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2306 | BlockBackend *blk; |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2307 | AioContext *aio_context; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2308 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2309 | blk = blk_by_name(device); |
| 2310 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 2311 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2312 | "Device '%s' not found", device); |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2313 | return; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2314 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2315 | |
| 2316 | aio_context = blk_get_aio_context(blk); |
| 2317 | aio_context_acquire(aio_context); |
| 2318 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2319 | bs = blk_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2320 | if (!bs) { |
| 2321 | error_setg(errp, "Device '%s' has no medium", device); |
| 2322 | goto out; |
| 2323 | } |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2324 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2325 | memset(&cfg, 0, sizeof(cfg)); |
| 2326 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; |
| 2327 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; |
| 2328 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2329 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2330 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; |
| 2331 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; |
| 2332 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; |
| 2333 | |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2334 | if (has_bps_max) { |
| 2335 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; |
| 2336 | } |
| 2337 | if (has_bps_rd_max) { |
| 2338 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; |
| 2339 | } |
| 2340 | if (has_bps_wr_max) { |
| 2341 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; |
| 2342 | } |
| 2343 | if (has_iops_max) { |
| 2344 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; |
| 2345 | } |
| 2346 | if (has_iops_rd_max) { |
| 2347 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; |
| 2348 | } |
| 2349 | if (has_iops_wr_max) { |
| 2350 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; |
| 2351 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2352 | |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2353 | if (has_iops_size) { |
| 2354 | cfg.op_size = iops_size; |
| 2355 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2356 | |
| 2357 | if (!check_throttle_config(&cfg, errp)) { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2358 | goto out; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2359 | } |
| 2360 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2361 | if (throttle_enabled(&cfg)) { |
| 2362 | /* Enable I/O limits if they're not enabled yet, otherwise |
| 2363 | * just update the throttling group. */ |
| 2364 | if (!bs->io_limits_enabled) { |
| 2365 | bdrv_io_limits_enable(bs, has_group ? group : device); |
| 2366 | } else if (has_group) { |
| 2367 | bdrv_io_limits_update_group(bs, group); |
| 2368 | } |
| 2369 | /* Set the new throttling configuration */ |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2370 | bdrv_set_io_limits(bs, &cfg); |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2371 | } else if (bs->io_limits_enabled) { |
| 2372 | /* If all throttling settings are set to 0, disable I/O limits */ |
| 2373 | bdrv_io_limits_disable(bs); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2374 | } |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2375 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2376 | out: |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2377 | aio_context_release(aio_context); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2378 | } |
| 2379 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2380 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
| 2381 | bool has_granularity, uint32_t granularity, |
| 2382 | Error **errp) |
| 2383 | { |
| 2384 | AioContext *aio_context; |
| 2385 | BlockDriverState *bs; |
| 2386 | |
| 2387 | if (!name || name[0] == '\0') { |
| 2388 | error_setg(errp, "Bitmap name cannot be empty"); |
| 2389 | return; |
| 2390 | } |
| 2391 | |
| 2392 | bs = bdrv_lookup_bs(node, node, errp); |
| 2393 | if (!bs) { |
| 2394 | return; |
| 2395 | } |
| 2396 | |
| 2397 | aio_context = bdrv_get_aio_context(bs); |
| 2398 | aio_context_acquire(aio_context); |
| 2399 | |
| 2400 | if (has_granularity) { |
| 2401 | if (granularity < 512 || !is_power_of_2(granularity)) { |
| 2402 | error_setg(errp, "Granularity must be power of 2 " |
| 2403 | "and at least 512"); |
| 2404 | goto out; |
| 2405 | } |
| 2406 | } else { |
| 2407 | /* Default to cluster size, if available: */ |
| 2408 | granularity = bdrv_get_default_bitmap_granularity(bs); |
| 2409 | } |
| 2410 | |
| 2411 | bdrv_create_dirty_bitmap(bs, granularity, name, errp); |
| 2412 | |
| 2413 | out: |
| 2414 | aio_context_release(aio_context); |
| 2415 | } |
| 2416 | |
| 2417 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, |
| 2418 | Error **errp) |
| 2419 | { |
| 2420 | AioContext *aio_context; |
| 2421 | BlockDriverState *bs; |
| 2422 | BdrvDirtyBitmap *bitmap; |
| 2423 | |
| 2424 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); |
| 2425 | if (!bitmap || !bs) { |
| 2426 | return; |
| 2427 | } |
| 2428 | |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2429 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2430 | error_setg(errp, |
| 2431 | "Bitmap '%s' is currently frozen and cannot be removed", |
| 2432 | name); |
| 2433 | goto out; |
| 2434 | } |
John Snow | 20dca81 | 2015-04-17 19:50:02 -0400 | [diff] [blame] | 2435 | bdrv_dirty_bitmap_make_anon(bitmap); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2436 | bdrv_release_dirty_bitmap(bs, bitmap); |
| 2437 | |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2438 | out: |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2439 | aio_context_release(aio_context); |
| 2440 | } |
| 2441 | |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2442 | /** |
| 2443 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap |
| 2444 | * immediately after a full backup operation. |
| 2445 | */ |
| 2446 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, |
| 2447 | Error **errp) |
| 2448 | { |
| 2449 | AioContext *aio_context; |
| 2450 | BdrvDirtyBitmap *bitmap; |
| 2451 | BlockDriverState *bs; |
| 2452 | |
| 2453 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); |
| 2454 | if (!bitmap || !bs) { |
| 2455 | return; |
| 2456 | } |
| 2457 | |
| 2458 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2459 | error_setg(errp, |
| 2460 | "Bitmap '%s' is currently frozen and cannot be modified", |
| 2461 | name); |
| 2462 | goto out; |
| 2463 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { |
| 2464 | error_setg(errp, |
| 2465 | "Bitmap '%s' is currently disabled and cannot be cleared", |
| 2466 | name); |
| 2467 | goto out; |
| 2468 | } |
| 2469 | |
| 2470 | bdrv_clear_dirty_bitmap(bitmap); |
| 2471 | |
| 2472 | out: |
| 2473 | aio_context_release(aio_context); |
| 2474 | } |
| 2475 | |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2476 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2477 | { |
| 2478 | const char *id = qdict_get_str(qdict, "id"); |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 2479 | BlockBackend *blk; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2480 | BlockDriverState *bs; |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2481 | AioContext *aio_context; |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 2482 | Error *local_err = NULL; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2483 | |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 2484 | blk = blk_by_name(id); |
| 2485 | if (!blk) { |
Markus Armbruster | b1422f2 | 2014-05-16 11:00:09 +0200 | [diff] [blame] | 2486 | error_report("Device '%s' not found", id); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2487 | return; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2488 | } |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2489 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 2490 | if (!blk_legacy_dinfo(blk)) { |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 2491 | error_report("Deleting device added with blockdev-add" |
| 2492 | " is not supported"); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 2493 | return; |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 2494 | } |
| 2495 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2496 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2497 | aio_context_acquire(aio_context); |
| 2498 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2499 | bs = blk_bs(blk); |
| 2500 | if (bs) { |
| 2501 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
| 2502 | error_report_err(local_err); |
| 2503 | aio_context_release(aio_context); |
| 2504 | return; |
| 2505 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2506 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2507 | bdrv_close(bs); |
| 2508 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2509 | |
Markus Armbruster | fa879d6 | 2011-08-03 15:07:40 +0200 | [diff] [blame] | 2510 | /* if we have a device attached to this BlockDriverState |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 2511 | * then we need to make the drive anonymous until the device |
| 2512 | * can be removed. If this is a drive with no device backing |
| 2513 | * then we can just get rid of the block driver state right here. |
| 2514 | */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 2515 | if (blk_get_attached_dev(blk)) { |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame] | 2516 | blk_hide_on_behalf_of_hmp_drive_del(blk); |
Stefan Hajnoczi | 293c51a | 2013-06-05 10:33:14 +0200 | [diff] [blame] | 2517 | /* Further I/O must not pause the guest */ |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 2518 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
| 2519 | BLOCKDEV_ON_ERROR_REPORT); |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 2520 | } else { |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 2521 | blk_unref(blk); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2522 | } |
| 2523 | |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 2524 | aio_context_release(aio_context); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 2525 | } |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2526 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2527 | void qmp_block_resize(bool has_device, const char *device, |
| 2528 | bool has_node_name, const char *node_name, |
| 2529 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2530 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2531 | Error *local_err = NULL; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2532 | BlockDriverState *bs; |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2533 | AioContext *aio_context; |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2534 | int ret; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2535 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2536 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 2537 | has_node_name ? node_name : NULL, |
| 2538 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2539 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2540 | error_propagate(errp, local_err); |
| 2541 | return; |
| 2542 | } |
| 2543 | |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2544 | aio_context = bdrv_get_aio_context(bs); |
| 2545 | aio_context_acquire(aio_context); |
| 2546 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2547 | if (!bdrv_is_first_non_filter(bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2548 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2549 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2550 | } |
| 2551 | |
| 2552 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2553 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2554 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2555 | } |
| 2556 | |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2557 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2558 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2559 | goto out; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2560 | } |
| 2561 | |
Peter Lieven | 92b7a08 | 2013-03-11 11:04:24 +0100 | [diff] [blame] | 2562 | /* complete all in-flight operations before resizing the device */ |
| 2563 | bdrv_drain_all(); |
| 2564 | |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2565 | ret = bdrv_truncate(bs, size); |
| 2566 | switch (ret) { |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2567 | case 0: |
| 2568 | break; |
| 2569 | case -ENOMEDIUM: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2570 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2571 | break; |
| 2572 | case -ENOTSUP: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2573 | error_setg(errp, QERR_UNSUPPORTED); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2574 | break; |
| 2575 | case -EACCES: |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 2576 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2577 | break; |
| 2578 | case -EBUSY: |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2579 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2580 | break; |
| 2581 | default: |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 2582 | error_setg_errno(errp, -ret, "Could not resize"); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 2583 | break; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2584 | } |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2585 | |
| 2586 | out: |
| 2587 | aio_context_release(aio_context); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2588 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2589 | |
Jeff Cody | 9abf2db | 2012-09-27 13:29:14 -0400 | [diff] [blame] | 2590 | static void block_job_cb(void *opaque, int ret) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2591 | { |
Stefan Hajnoczi | 723c5d9 | 2014-10-21 12:03:53 +0100 | [diff] [blame] | 2592 | /* Note that this function may be executed from another AioContext besides |
| 2593 | * the QEMU main loop. If you need to access anything that assumes the |
| 2594 | * QEMU global mutex, use a BH or introduce a mutex. |
| 2595 | */ |
| 2596 | |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2597 | BlockDriverState *bs = opaque; |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2598 | const char *msg = NULL; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2599 | |
Jeff Cody | 9abf2db | 2012-09-27 13:29:14 -0400 | [diff] [blame] | 2600 | trace_block_job_cb(bs, bs->job, ret); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2601 | |
| 2602 | assert(bs->job); |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2603 | |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2604 | if (ret < 0) { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2605 | msg = strerror(-ret); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2606 | } |
| 2607 | |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2608 | if (block_job_is_cancelled(bs->job)) { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2609 | block_job_event_cancelled(bs->job); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2610 | } else { |
Wenchao Xia | bcada37b | 2014-06-18 08:43:47 +0200 | [diff] [blame] | 2611 | block_job_event_completed(bs->job, msg); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2612 | } |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 2613 | |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 2614 | bdrv_put_ref_bh_schedule(bs); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2615 | } |
| 2616 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2617 | void qmp_block_stream(const char *device, |
| 2618 | bool has_base, const char *base, |
| 2619 | bool has_backing_file, const char *backing_file, |
| 2620 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2621 | bool has_on_error, BlockdevOnError on_error, |
| 2622 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2623 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2624 | BlockBackend *blk; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2625 | BlockDriverState *bs; |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2626 | BlockDriverState *base_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2627 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2628 | Error *local_err = NULL; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2629 | const char *base_name = NULL; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2630 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2631 | if (!has_on_error) { |
| 2632 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2633 | } |
| 2634 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2635 | blk = blk_by_name(device); |
| 2636 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 2637 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2638 | "Device '%s' not found", device); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2639 | return; |
| 2640 | } |
| 2641 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2642 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2643 | aio_context_acquire(aio_context); |
| 2644 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2645 | if (!blk_is_available(blk)) { |
| 2646 | error_setg(errp, "Device '%s' has no medium", device); |
| 2647 | goto out; |
| 2648 | } |
| 2649 | bs = blk_bs(blk); |
| 2650 | |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 2651 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2652 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 2653 | } |
| 2654 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2655 | if (has_base) { |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2656 | base_bs = bdrv_find_backing_image(bs, base); |
| 2657 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2658 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2659 | goto out; |
Marcelo Tosatti | c8c3080f | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2660 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2661 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2662 | base_name = base; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2663 | } |
| 2664 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2665 | /* if we are streaming the entire chain, the result will have no backing |
| 2666 | * file, and specifying one is therefore an error */ |
| 2667 | if (base_bs == NULL && has_backing_file) { |
| 2668 | error_setg(errp, "backing file specified, but streaming the " |
| 2669 | "entire chain"); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2670 | goto out; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2671 | } |
| 2672 | |
| 2673 | /* backing_file string overrides base bs filename */ |
| 2674 | base_name = has_backing_file ? backing_file : base_name; |
| 2675 | |
| 2676 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2677 | on_error, block_job_cb, bs, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2678 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2679 | error_propagate(errp, local_err); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2680 | goto out; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2681 | } |
| 2682 | |
| 2683 | trace_qmp_block_stream(bs, bs->job); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2684 | |
| 2685 | out: |
| 2686 | aio_context_release(aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2687 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 2688 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2689 | void qmp_block_commit(const char *device, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2690 | bool has_base, const char *base, |
| 2691 | bool has_top, const char *top, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2692 | bool has_backing_file, const char *backing_file, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2693 | bool has_speed, int64_t speed, |
| 2694 | Error **errp) |
| 2695 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2696 | BlockBackend *blk; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2697 | BlockDriverState *bs; |
| 2698 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2699 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2700 | Error *local_err = NULL; |
| 2701 | /* This will be part of the QMP command, if/when the |
| 2702 | * BlockdevOnError change for blkmirror makes it in |
| 2703 | */ |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 2704 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2705 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 2706 | if (!has_speed) { |
| 2707 | speed = 0; |
| 2708 | } |
| 2709 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2710 | /* Important Note: |
| 2711 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 2712 | * live commit feature versions; for this to work, we must make sure to |
| 2713 | * perform the device lookup before any generic errors that may occur in a |
| 2714 | * scenario in which all optional arguments are omitted. */ |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2715 | blk = blk_by_name(device); |
| 2716 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 2717 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2718 | "Device '%s' not found", device); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2719 | return; |
| 2720 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2721 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2722 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2723 | aio_context_acquire(aio_context); |
| 2724 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2725 | if (!blk_is_available(blk)) { |
| 2726 | error_setg(errp, "Device '%s' has no medium", device); |
| 2727 | goto out; |
| 2728 | } |
| 2729 | bs = blk_bs(blk); |
| 2730 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 2731 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2732 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 2733 | } |
| 2734 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2735 | /* default top_bs is the active layer */ |
| 2736 | top_bs = bs; |
| 2737 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2738 | if (has_top && top) { |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2739 | if (strcmp(bs->filename, top) != 0) { |
| 2740 | top_bs = bdrv_find_backing_image(bs, top); |
| 2741 | } |
| 2742 | } |
| 2743 | |
| 2744 | if (top_bs == NULL) { |
| 2745 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2746 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2747 | } |
| 2748 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2749 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 2750 | |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2751 | if (has_base && base) { |
| 2752 | base_bs = bdrv_find_backing_image(top_bs, base); |
| 2753 | } else { |
| 2754 | base_bs = bdrv_find_base(top_bs); |
| 2755 | } |
| 2756 | |
| 2757 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2758 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2759 | goto out; |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2760 | } |
| 2761 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2762 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 2763 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 2764 | if (bdrv_op_is_blocked(base_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 2765 | goto out; |
| 2766 | } |
| 2767 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2768 | /* Do not allow attempts to commit an image into itself */ |
| 2769 | if (top_bs == base_bs) { |
| 2770 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2771 | goto out; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2772 | } |
| 2773 | |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2774 | if (top_bs == bs) { |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2775 | if (has_backing_file) { |
| 2776 | error_setg(errp, "'backing-file' specified," |
| 2777 | " but 'top' is the active layer"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2778 | goto out; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2779 | } |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2780 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
| 2781 | bs, &local_err); |
| 2782 | } else { |
| 2783 | 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] | 2784 | has_backing_file ? backing_file : NULL, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2785 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2786 | if (local_err != NULL) { |
| 2787 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2788 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2789 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2790 | |
| 2791 | out: |
| 2792 | aio_context_release(aio_context); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2793 | } |
| 2794 | |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2795 | void qmp_drive_backup(const char *device, const char *target, |
| 2796 | bool has_format, const char *format, |
Stefan Hajnoczi | b53169e | 2013-06-26 14:11:57 +0200 | [diff] [blame] | 2797 | enum MirrorSyncMode sync, |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2798 | bool has_mode, enum NewImageMode mode, |
| 2799 | bool has_speed, int64_t speed, |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 2800 | bool has_bitmap, const char *bitmap, |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2801 | bool has_on_source_error, BlockdevOnError on_source_error, |
| 2802 | bool has_on_target_error, BlockdevOnError on_target_error, |
| 2803 | Error **errp) |
| 2804 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2805 | BlockBackend *blk; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2806 | BlockDriverState *bs; |
| 2807 | BlockDriverState *target_bs; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 2808 | BlockDriverState *source = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 2809 | BdrvDirtyBitmap *bmap = NULL; |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2810 | AioContext *aio_context; |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 2811 | QDict *options = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2812 | Error *local_err = NULL; |
| 2813 | int flags; |
| 2814 | int64_t size; |
| 2815 | int ret; |
| 2816 | |
| 2817 | if (!has_speed) { |
| 2818 | speed = 0; |
| 2819 | } |
| 2820 | if (!has_on_source_error) { |
| 2821 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2822 | } |
| 2823 | if (!has_on_target_error) { |
| 2824 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2825 | } |
| 2826 | if (!has_mode) { |
| 2827 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 2828 | } |
| 2829 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2830 | blk = blk_by_name(device); |
| 2831 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 2832 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2833 | "Device '%s' not found", device); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2834 | return; |
| 2835 | } |
| 2836 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2837 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2838 | aio_context_acquire(aio_context); |
| 2839 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2840 | /* Although backup_run has this check too, we need to use bs->drv below, so |
| 2841 | * do an early check redundantly. */ |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2842 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2843 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2844 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2845 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2846 | bs = blk_bs(blk); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2847 | |
| 2848 | if (!has_format) { |
| 2849 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; |
| 2850 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2851 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2852 | /* Early check to avoid creating target */ |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 2853 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2854 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2855 | } |
| 2856 | |
| 2857 | flags = bs->open_flags | BDRV_O_RDWR; |
| 2858 | |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 2859 | /* See if we have a backing HD we can use to create our new image |
| 2860 | * on top of. */ |
| 2861 | if (sync == MIRROR_SYNC_MODE_TOP) { |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 2862 | source = backing_bs(bs); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 2863 | if (!source) { |
| 2864 | sync = MIRROR_SYNC_MODE_FULL; |
| 2865 | } |
| 2866 | } |
| 2867 | if (sync == MIRROR_SYNC_MODE_NONE) { |
| 2868 | source = bs; |
| 2869 | } |
| 2870 | |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2871 | size = bdrv_getlength(bs); |
| 2872 | if (size < 0) { |
| 2873 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2874 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2875 | } |
| 2876 | |
| 2877 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 2878 | assert(format); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 2879 | if (source) { |
| 2880 | bdrv_img_create(target, format, source->filename, |
| 2881 | source->drv->format_name, NULL, |
| 2882 | size, flags, &local_err, false); |
| 2883 | } else { |
| 2884 | bdrv_img_create(target, format, NULL, NULL, NULL, |
| 2885 | size, flags, &local_err, false); |
| 2886 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2887 | } |
| 2888 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2889 | if (local_err) { |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2890 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2891 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2892 | } |
| 2893 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 2894 | if (format) { |
| 2895 | options = qdict_new(); |
| 2896 | qdict_put(options, "driver", qstring_from_str(format)); |
| 2897 | } |
| 2898 | |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 2899 | target_bs = NULL; |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 2900 | ret = bdrv_open(&target_bs, target, NULL, options, flags, &local_err); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2901 | if (ret < 0) { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 2902 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2903 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2904 | } |
| 2905 | |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2906 | bdrv_set_aio_context(target_bs, aio_context); |
| 2907 | |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 2908 | if (has_bitmap) { |
| 2909 | bmap = bdrv_find_dirty_bitmap(bs, bitmap); |
| 2910 | if (!bmap) { |
| 2911 | error_setg(errp, "Bitmap '%s' could not be found", bitmap); |
| 2912 | goto out; |
| 2913 | } |
| 2914 | } |
| 2915 | |
| 2916 | backup_start(bs, target_bs, speed, sync, bmap, |
| 2917 | on_source_error, on_target_error, |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2918 | block_job_cb, bs, &local_err); |
| 2919 | if (local_err != NULL) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 2920 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2921 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2922 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2923 | } |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 2924 | |
| 2925 | out: |
| 2926 | aio_context_release(aio_context); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2927 | } |
| 2928 | |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 2929 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
| 2930 | { |
Alberto Garcia | d5a8ee6 | 2015-04-17 14:52:43 +0300 | [diff] [blame] | 2931 | return bdrv_named_nodes_list(errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 2932 | } |
| 2933 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2934 | void qmp_blockdev_backup(const char *device, const char *target, |
| 2935 | enum MirrorSyncMode sync, |
| 2936 | bool has_speed, int64_t speed, |
| 2937 | bool has_on_source_error, |
| 2938 | BlockdevOnError on_source_error, |
| 2939 | bool has_on_target_error, |
| 2940 | BlockdevOnError on_target_error, |
| 2941 | Error **errp) |
| 2942 | { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2943 | BlockBackend *blk, *target_blk; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2944 | BlockDriverState *bs; |
| 2945 | BlockDriverState *target_bs; |
| 2946 | Error *local_err = NULL; |
| 2947 | AioContext *aio_context; |
| 2948 | |
| 2949 | if (!has_speed) { |
| 2950 | speed = 0; |
| 2951 | } |
| 2952 | if (!has_on_source_error) { |
| 2953 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2954 | } |
| 2955 | if (!has_on_target_error) { |
| 2956 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2957 | } |
| 2958 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2959 | blk = blk_by_name(device); |
| 2960 | if (!blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 2961 | error_setg(errp, "Device '%s' not found", device); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2962 | return; |
| 2963 | } |
| 2964 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2965 | aio_context = blk_get_aio_context(blk); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2966 | aio_context_acquire(aio_context); |
| 2967 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2968 | if (!blk_is_available(blk)) { |
| 2969 | error_setg(errp, "Device '%s' has no medium", device); |
| 2970 | goto out; |
| 2971 | } |
| 2972 | bs = blk_bs(blk); |
| 2973 | |
| 2974 | target_blk = blk_by_name(target); |
| 2975 | if (!target_blk) { |
Markus Armbruster | 5b347c5 | 2015-03-17 08:36:14 +0100 | [diff] [blame] | 2976 | error_setg(errp, "Device '%s' not found", target); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2977 | goto out; |
| 2978 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2979 | |
| 2980 | if (!blk_is_available(target_blk)) { |
| 2981 | error_setg(errp, "Device '%s' has no medium", target); |
| 2982 | goto out; |
| 2983 | } |
| 2984 | target_bs = blk_bs(target_blk); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2985 | |
| 2986 | bdrv_ref(target_bs); |
| 2987 | bdrv_set_aio_context(target_bs, aio_context); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 2988 | backup_start(bs, target_bs, speed, sync, NULL, on_source_error, |
| 2989 | on_target_error, block_job_cb, bs, &local_err); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2990 | if (local_err != NULL) { |
| 2991 | bdrv_unref(target_bs); |
| 2992 | error_propagate(errp, local_err); |
| 2993 | } |
| 2994 | out: |
| 2995 | aio_context_release(aio_context); |
| 2996 | } |
| 2997 | |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2998 | void qmp_drive_mirror(const char *device, const char *target, |
| 2999 | bool has_format, const char *format, |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3000 | bool has_node_name, const char *node_name, |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3001 | bool has_replaces, const char *replaces, |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3002 | enum MirrorSyncMode sync, |
| 3003 | bool has_mode, enum NewImageMode mode, |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3004 | bool has_speed, int64_t speed, |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3005 | bool has_granularity, uint32_t granularity, |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3006 | bool has_buf_size, int64_t buf_size, |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3007 | bool has_on_source_error, BlockdevOnError on_source_error, |
| 3008 | bool has_on_target_error, BlockdevOnError on_target_error, |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 3009 | bool has_unmap, bool unmap, |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3010 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3011 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3012 | BlockBackend *blk; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3013 | BlockDriverState *bs; |
| 3014 | BlockDriverState *source, *target_bs; |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3015 | AioContext *aio_context; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3016 | Error *local_err = NULL; |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3017 | QDict *options; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3018 | int flags; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3019 | int64_t size; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3020 | int ret; |
| 3021 | |
| 3022 | if (!has_speed) { |
| 3023 | speed = 0; |
| 3024 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3025 | if (!has_on_source_error) { |
| 3026 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3027 | } |
| 3028 | if (!has_on_target_error) { |
| 3029 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3030 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3031 | if (!has_mode) { |
| 3032 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 3033 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3034 | if (!has_granularity) { |
| 3035 | granularity = 0; |
| 3036 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3037 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 3038 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3039 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 3040 | if (!has_unmap) { |
| 3041 | unmap = true; |
| 3042 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3043 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3044 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3045 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3046 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3047 | return; |
| 3048 | } |
| 3049 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3050 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3051 | "power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3052 | return; |
| 3053 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3054 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3055 | blk = blk_by_name(device); |
| 3056 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3057 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3058 | "Device '%s' not found", device); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3059 | return; |
| 3060 | } |
| 3061 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3062 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3063 | aio_context_acquire(aio_context); |
| 3064 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3065 | if (!blk_is_available(blk)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3066 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3067 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3068 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3069 | bs = blk_bs(blk); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3070 | |
| 3071 | if (!has_format) { |
| 3072 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; |
| 3073 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3074 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 3075 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) { |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3076 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3077 | } |
| 3078 | |
| 3079 | flags = bs->open_flags | BDRV_O_RDWR; |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3080 | source = backing_bs(bs); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3081 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { |
| 3082 | sync = MIRROR_SYNC_MODE_FULL; |
| 3083 | } |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 3084 | if (sync == MIRROR_SYNC_MODE_NONE) { |
| 3085 | source = bs; |
| 3086 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3087 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3088 | size = bdrv_getlength(bs); |
| 3089 | if (size < 0) { |
| 3090 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3091 | goto out; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3092 | } |
| 3093 | |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3094 | if (has_replaces) { |
| 3095 | BlockDriverState *to_replace_bs; |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3096 | AioContext *replace_aio_context; |
| 3097 | int64_t replace_size; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3098 | |
| 3099 | if (!has_node_name) { |
| 3100 | error_setg(errp, "a node-name must be provided when replacing a" |
| 3101 | " named node of the graph"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3102 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3103 | } |
| 3104 | |
Wen Congyang | e12f378 | 2015-07-17 10:12:22 +0800 | [diff] [blame] | 3105 | to_replace_bs = check_to_replace_node(bs, replaces, &local_err); |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3106 | |
| 3107 | if (!to_replace_bs) { |
| 3108 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3109 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3110 | } |
| 3111 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3112 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
| 3113 | aio_context_acquire(replace_aio_context); |
| 3114 | replace_size = bdrv_getlength(to_replace_bs); |
| 3115 | aio_context_release(replace_aio_context); |
| 3116 | |
| 3117 | if (size != replace_size) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3118 | error_setg(errp, "cannot replace image with a mirror image of " |
| 3119 | "different size"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3120 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3121 | } |
| 3122 | } |
| 3123 | |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 3124 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
| 3125 | && mode != NEW_IMAGE_MODE_EXISTING) |
| 3126 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3127 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3128 | assert(format); |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3129 | bdrv_img_create(target, format, |
Miroslav Rezanina | f382d43 | 2013-02-13 09:09:40 +0100 | [diff] [blame] | 3130 | NULL, NULL, NULL, size, flags, &local_err, false); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3131 | } else { |
| 3132 | switch (mode) { |
| 3133 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3134 | break; |
| 3135 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 3136 | /* create new image with backing file */ |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3137 | bdrv_img_create(target, format, |
| 3138 | source->filename, |
| 3139 | source->drv->format_name, |
Miroslav Rezanina | f382d43 | 2013-02-13 09:09:40 +0100 | [diff] [blame] | 3140 | NULL, size, flags, &local_err, false); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3141 | break; |
| 3142 | default: |
| 3143 | abort(); |
| 3144 | } |
| 3145 | } |
| 3146 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3147 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3148 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3149 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3150 | } |
| 3151 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3152 | options = qdict_new(); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3153 | if (has_node_name) { |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3154 | qdict_put(options, "node-name", qstring_from_str(node_name)); |
| 3155 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3156 | if (format) { |
| 3157 | qdict_put(options, "driver", qstring_from_str(format)); |
| 3158 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3159 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3160 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3161 | * file. |
| 3162 | */ |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 3163 | target_bs = NULL; |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3164 | ret = bdrv_open(&target_bs, target, NULL, options, |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 3165 | flags | BDRV_O_NO_BACKING, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3166 | if (ret < 0) { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 3167 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3168 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3169 | } |
| 3170 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3171 | bdrv_set_aio_context(target_bs, aio_context); |
| 3172 | |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3173 | /* pass the node name to replace to mirror start since it's loose coupling |
| 3174 | * and will allow to check whether the node still exist at mirror completion |
| 3175 | */ |
| 3176 | mirror_start(bs, target_bs, |
| 3177 | has_replaces ? replaces : NULL, |
| 3178 | speed, granularity, buf_size, sync, |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3179 | on_source_error, on_target_error, |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 3180 | unmap, |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3181 | block_job_cb, bs, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3182 | if (local_err != NULL) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 3183 | bdrv_unref(target_bs); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3184 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3185 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3186 | } |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3187 | |
| 3188 | out: |
| 3189 | aio_context_release(aio_context); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3190 | } |
| 3191 | |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3192 | /* 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] | 3193 | static BlockJob *find_block_job(const char *device, AioContext **aio_context, |
| 3194 | Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3195 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3196 | BlockBackend *blk; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3197 | BlockDriverState *bs; |
| 3198 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3199 | *aio_context = NULL; |
| 3200 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3201 | blk = blk_by_name(device); |
| 3202 | if (!blk) { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3203 | goto notfound; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3204 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3205 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3206 | *aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3207 | aio_context_acquire(*aio_context); |
| 3208 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3209 | if (!blk_is_available(blk)) { |
| 3210 | goto notfound; |
| 3211 | } |
| 3212 | bs = blk_bs(blk); |
| 3213 | |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3214 | if (!bs->job) { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3215 | goto notfound; |
| 3216 | } |
| 3217 | |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3218 | return bs->job; |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3219 | |
| 3220 | notfound: |
Markus Armbruster | 2e3a026 | 2015-01-29 10:36:59 +0100 | [diff] [blame] | 3221 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 3222 | "No active block job on device '%s'", device); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3223 | if (*aio_context) { |
| 3224 | aio_context_release(*aio_context); |
| 3225 | *aio_context = NULL; |
| 3226 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3227 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3228 | } |
| 3229 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3230 | 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] | 3231 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3232 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3233 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3234 | |
| 3235 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3236 | return; |
| 3237 | } |
| 3238 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3239 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3240 | aio_context_release(aio_context); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3241 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3242 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3243 | void qmp_block_job_cancel(const char *device, |
| 3244 | bool has_force, bool force, Error **errp) |
| 3245 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3246 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3247 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3248 | |
| 3249 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3250 | return; |
| 3251 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3252 | |
| 3253 | if (!has_force) { |
| 3254 | force = false; |
| 3255 | } |
| 3256 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3257 | if (job->user_paused && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 3258 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 3259 | device); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3260 | goto out; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3261 | } |
| 3262 | |
| 3263 | trace_qmp_block_job_cancel(job); |
| 3264 | block_job_cancel(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3265 | out: |
| 3266 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3267 | } |
| 3268 | |
| 3269 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3270 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3271 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3272 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3273 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3274 | if (!job || job->user_paused) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3275 | return; |
| 3276 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3277 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3278 | job->user_paused = true; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3279 | trace_qmp_block_job_pause(job); |
| 3280 | block_job_pause(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3281 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3282 | } |
| 3283 | |
| 3284 | void qmp_block_job_resume(const char *device, Error **errp) |
| 3285 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3286 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3287 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3288 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3289 | if (!job || !job->user_paused) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 3290 | return; |
| 3291 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3292 | |
Fam Zheng | 751ebd7 | 2015-04-03 22:05:18 +0800 | [diff] [blame] | 3293 | job->user_paused = false; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3294 | trace_qmp_block_job_resume(job); |
| 3295 | block_job_resume(job); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3296 | aio_context_release(aio_context); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3297 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3298 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3299 | void qmp_block_job_complete(const char *device, Error **errp) |
| 3300 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3301 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3302 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3303 | |
| 3304 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3305 | return; |
| 3306 | } |
| 3307 | |
| 3308 | trace_qmp_block_job_complete(job); |
| 3309 | block_job_complete(job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3310 | aio_context_release(aio_context); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3311 | } |
| 3312 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3313 | void qmp_change_backing_file(const char *device, |
| 3314 | const char *image_node_name, |
| 3315 | const char *backing_file, |
| 3316 | Error **errp) |
| 3317 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3318 | BlockBackend *blk; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3319 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3320 | AioContext *aio_context; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3321 | BlockDriverState *image_bs = NULL; |
| 3322 | Error *local_err = NULL; |
| 3323 | bool ro; |
| 3324 | int open_flags; |
| 3325 | int ret; |
| 3326 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 3327 | blk = blk_by_name(device); |
| 3328 | if (!blk) { |
Markus Armbruster | 75158eb | 2015-03-16 08:57:47 +0100 | [diff] [blame] | 3329 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3330 | "Device '%s' not found", device); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3331 | return; |
| 3332 | } |
| 3333 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3334 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3335 | aio_context_acquire(aio_context); |
| 3336 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3337 | if (!blk_is_available(blk)) { |
| 3338 | error_setg(errp, "Device '%s' has no medium", device); |
| 3339 | goto out; |
| 3340 | } |
| 3341 | bs = blk_bs(blk); |
| 3342 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3343 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 3344 | if (local_err) { |
| 3345 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3346 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3347 | } |
| 3348 | |
| 3349 | if (!image_bs) { |
| 3350 | error_setg(errp, "image file not found"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3351 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3352 | } |
| 3353 | |
| 3354 | if (bdrv_find_base(image_bs) == image_bs) { |
| 3355 | error_setg(errp, "not allowing backing file change on an image " |
| 3356 | "without a backing file"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3357 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3358 | } |
| 3359 | |
| 3360 | /* even though we are not necessarily operating on bs, we need it to |
| 3361 | * determine if block ops are currently prohibited on the chain */ |
| 3362 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3363 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3364 | } |
| 3365 | |
| 3366 | /* final sanity check */ |
| 3367 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 3368 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 3369 | device); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3370 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3371 | } |
| 3372 | |
| 3373 | /* if not r/w, reopen to make r/w */ |
| 3374 | open_flags = image_bs->open_flags; |
| 3375 | ro = bdrv_is_read_only(image_bs); |
| 3376 | |
| 3377 | if (ro) { |
| 3378 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); |
| 3379 | if (local_err) { |
| 3380 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3381 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3382 | } |
| 3383 | } |
| 3384 | |
| 3385 | ret = bdrv_change_backing_file(image_bs, backing_file, |
| 3386 | image_bs->drv ? image_bs->drv->format_name : ""); |
| 3387 | |
| 3388 | if (ret < 0) { |
| 3389 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 3390 | backing_file); |
| 3391 | /* don't exit here, so we can try to restore open flags if |
| 3392 | * appropriate */ |
| 3393 | } |
| 3394 | |
| 3395 | if (ro) { |
| 3396 | bdrv_reopen(image_bs, open_flags, &local_err); |
| 3397 | if (local_err) { |
| 3398 | error_propagate(errp, local_err); /* will preserve prior errp */ |
| 3399 | } |
| 3400 | } |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3401 | |
| 3402 | out: |
| 3403 | aio_context_release(aio_context); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3404 | } |
| 3405 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3406 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 3407 | { |
| 3408 | QmpOutputVisitor *ov = qmp_output_visitor_new(); |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3409 | BlockDriverState *bs; |
| 3410 | BlockBackend *blk = NULL; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3411 | QObject *obj; |
| 3412 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3413 | Error *local_err = NULL; |
| 3414 | |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 3415 | /* 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] | 3416 | * cache.direct=false instead of silently switching to aio=threads, except |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 3417 | * when called from drive_new(). |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3418 | * |
| 3419 | * For now, simply forbidding the combination for all drivers will do. */ |
| 3420 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { |
Kevin Wolf | c6e0bd9 | 2014-03-06 15:47:32 +0100 | [diff] [blame] | 3421 | bool direct = options->has_cache && |
| 3422 | options->cache->has_direct && |
| 3423 | options->cache->direct; |
| 3424 | if (!direct) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3425 | error_setg(errp, "aio=native requires cache.direct=true"); |
| 3426 | goto fail; |
| 3427 | } |
| 3428 | } |
| 3429 | |
| 3430 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), |
| 3431 | &options, NULL, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3432 | if (local_err) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3433 | error_propagate(errp, local_err); |
| 3434 | goto fail; |
| 3435 | } |
| 3436 | |
| 3437 | obj = qmp_output_get_qobject(ov); |
| 3438 | qdict = qobject_to_qdict(obj); |
| 3439 | |
| 3440 | qdict_flatten(qdict); |
| 3441 | |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3442 | if (options->has_id) { |
| 3443 | blk = blockdev_init(NULL, qdict, &local_err); |
| 3444 | if (local_err) { |
| 3445 | error_propagate(errp, local_err); |
| 3446 | goto fail; |
| 3447 | } |
| 3448 | |
| 3449 | bs = blk_bs(blk); |
| 3450 | } else { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3451 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 3452 | error_setg(errp, "'id' and/or 'node-name' need to be specified for " |
| 3453 | "the root node"); |
| 3454 | goto fail; |
| 3455 | } |
| 3456 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 3457 | bs = bds_tree_init(qdict, errp); |
| 3458 | if (!bs) { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3459 | goto fail; |
| 3460 | } |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3461 | } |
| 3462 | |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3463 | if (bs && bdrv_key_required(bs)) { |
| 3464 | if (blk) { |
| 3465 | blk_unref(blk); |
| 3466 | } else { |
| 3467 | bdrv_unref(bs); |
| 3468 | } |
Kevin Wolf | 8ae8e90 | 2014-03-06 15:43:42 +0100 | [diff] [blame] | 3469 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
| 3470 | goto fail; |
| 3471 | } |
| 3472 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3473 | fail: |
| 3474 | qmp_output_visitor_cleanup(ov); |
| 3475 | } |
| 3476 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3477 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 3478 | { |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3479 | BlockJobInfoList *head = NULL, **p_next = &head; |
| 3480 | BlockDriverState *bs; |
| 3481 | |
| 3482 | for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) { |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3483 | AioContext *aio_context = bdrv_get_aio_context(bs); |
| 3484 | |
| 3485 | aio_context_acquire(aio_context); |
| 3486 | |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3487 | if (bs->job) { |
| 3488 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
| 3489 | elem->value = block_job_query(bs->job); |
| 3490 | *p_next = elem; |
| 3491 | p_next = &elem->next; |
| 3492 | } |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3493 | |
| 3494 | aio_context_release(aio_context); |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3495 | } |
| 3496 | |
| 3497 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3498 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3499 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3500 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3501 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3502 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3503 | .desc = { |
| 3504 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3505 | .name = "snapshot", |
| 3506 | .type = QEMU_OPT_BOOL, |
| 3507 | .help = "enable/disable snapshot mode", |
| 3508 | },{ |
Paolo Bonzini | a9384af | 2013-02-08 14:06:12 +0100 | [diff] [blame] | 3509 | .name = "discard", |
| 3510 | .type = QEMU_OPT_STRING, |
| 3511 | .help = "discard operation (ignore/off, unmap/on)", |
| 3512 | },{ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 3513 | .name = BDRV_OPT_CACHE_WB, |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 3514 | .type = QEMU_OPT_BOOL, |
| 3515 | .help = "enables writeback mode for any caches", |
| 3516 | },{ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 3517 | .name = BDRV_OPT_CACHE_DIRECT, |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 3518 | .type = QEMU_OPT_BOOL, |
| 3519 | .help = "enables use of O_DIRECT (bypass the host page cache)", |
| 3520 | },{ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 3521 | .name = BDRV_OPT_CACHE_NO_FLUSH, |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 3522 | .type = QEMU_OPT_BOOL, |
| 3523 | .help = "ignore any flush requests for the device", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3524 | },{ |
| 3525 | .name = "aio", |
| 3526 | .type = QEMU_OPT_STRING, |
| 3527 | .help = "host AIO implementation (threads, native)", |
| 3528 | },{ |
| 3529 | .name = "format", |
| 3530 | .type = QEMU_OPT_STRING, |
| 3531 | .help = "disk format (raw, qcow2, ...)", |
| 3532 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3533 | .name = "rerror", |
| 3534 | .type = QEMU_OPT_STRING, |
| 3535 | .help = "read error action", |
| 3536 | },{ |
| 3537 | .name = "werror", |
| 3538 | .type = QEMU_OPT_STRING, |
| 3539 | .help = "write error action", |
| 3540 | },{ |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 3541 | .name = "read-only", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3542 | .type = QEMU_OPT_BOOL, |
| 3543 | .help = "open drive file as read-only", |
| 3544 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 3545 | .name = "throttling.iops-total", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3546 | .type = QEMU_OPT_NUMBER, |
| 3547 | .help = "limit total I/O operations per second", |
| 3548 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 3549 | .name = "throttling.iops-read", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3550 | .type = QEMU_OPT_NUMBER, |
| 3551 | .help = "limit read operations per second", |
| 3552 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 3553 | .name = "throttling.iops-write", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3554 | .type = QEMU_OPT_NUMBER, |
| 3555 | .help = "limit write operations per second", |
| 3556 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 3557 | .name = "throttling.bps-total", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3558 | .type = QEMU_OPT_NUMBER, |
| 3559 | .help = "limit total bytes per second", |
| 3560 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 3561 | .name = "throttling.bps-read", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3562 | .type = QEMU_OPT_NUMBER, |
| 3563 | .help = "limit read bytes per second", |
| 3564 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 3565 | .name = "throttling.bps-write", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3566 | .type = QEMU_OPT_NUMBER, |
| 3567 | .help = "limit write bytes per second", |
| 3568 | },{ |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 3569 | .name = "throttling.iops-total-max", |
| 3570 | .type = QEMU_OPT_NUMBER, |
| 3571 | .help = "I/O operations burst", |
| 3572 | },{ |
| 3573 | .name = "throttling.iops-read-max", |
| 3574 | .type = QEMU_OPT_NUMBER, |
| 3575 | .help = "I/O operations read burst", |
| 3576 | },{ |
| 3577 | .name = "throttling.iops-write-max", |
| 3578 | .type = QEMU_OPT_NUMBER, |
| 3579 | .help = "I/O operations write burst", |
| 3580 | },{ |
| 3581 | .name = "throttling.bps-total-max", |
| 3582 | .type = QEMU_OPT_NUMBER, |
| 3583 | .help = "total bytes burst", |
| 3584 | },{ |
| 3585 | .name = "throttling.bps-read-max", |
| 3586 | .type = QEMU_OPT_NUMBER, |
| 3587 | .help = "total bytes read burst", |
| 3588 | },{ |
| 3589 | .name = "throttling.bps-write-max", |
| 3590 | .type = QEMU_OPT_NUMBER, |
| 3591 | .help = "total bytes write burst", |
| 3592 | },{ |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 3593 | .name = "throttling.iops-size", |
| 3594 | .type = QEMU_OPT_NUMBER, |
| 3595 | .help = "when limiting by iops max size of an I/O in bytes", |
| 3596 | },{ |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 3597 | .name = "throttling.group", |
| 3598 | .type = QEMU_OPT_STRING, |
| 3599 | .help = "name of the block throttling group", |
| 3600 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3601 | .name = "copy-on-read", |
| 3602 | .type = QEMU_OPT_BOOL, |
| 3603 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 3604 | },{ |
| 3605 | .name = "detect-zeroes", |
| 3606 | .type = QEMU_OPT_STRING, |
| 3607 | .help = "try to optimize zero writes (off, on, unmap)", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3608 | }, |
| 3609 | { /* end of list */ } |
| 3610 | }, |
| 3611 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3612 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 3613 | static QemuOptsList qemu_root_bds_opts = { |
| 3614 | .name = "root-bds", |
| 3615 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
| 3616 | .desc = { |
| 3617 | { |
| 3618 | .name = "discard", |
| 3619 | .type = QEMU_OPT_STRING, |
| 3620 | .help = "discard operation (ignore/off, unmap/on)", |
| 3621 | },{ |
| 3622 | .name = "cache.writeback", |
| 3623 | .type = QEMU_OPT_BOOL, |
| 3624 | .help = "enables writeback mode for any caches", |
| 3625 | },{ |
| 3626 | .name = "cache.direct", |
| 3627 | .type = QEMU_OPT_BOOL, |
| 3628 | .help = "enables use of O_DIRECT (bypass the host page cache)", |
| 3629 | },{ |
| 3630 | .name = "cache.no-flush", |
| 3631 | .type = QEMU_OPT_BOOL, |
| 3632 | .help = "ignore any flush requests for the device", |
| 3633 | },{ |
| 3634 | .name = "aio", |
| 3635 | .type = QEMU_OPT_STRING, |
| 3636 | .help = "host AIO implementation (threads, native)", |
| 3637 | },{ |
| 3638 | .name = "read-only", |
| 3639 | .type = QEMU_OPT_BOOL, |
| 3640 | .help = "open drive file as read-only", |
| 3641 | },{ |
| 3642 | .name = "copy-on-read", |
| 3643 | .type = QEMU_OPT_BOOL, |
| 3644 | .help = "copy read data from backing file into image file", |
| 3645 | },{ |
| 3646 | .name = "detect-zeroes", |
| 3647 | .type = QEMU_OPT_STRING, |
| 3648 | .help = "try to optimize zero writes (off, on, unmap)", |
| 3649 | }, |
| 3650 | { /* end of list */ } |
| 3651 | }, |
| 3652 | }; |
| 3653 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3654 | QemuOptsList qemu_drive_opts = { |
| 3655 | .name = "drive", |
| 3656 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 3657 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 3658 | /* |
| 3659 | * no elements => accept any params |
| 3660 | * validation will happen later |
| 3661 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3662 | { /* end of list */ } |
| 3663 | }, |
| 3664 | }; |