Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1 | /* |
| 2 | * QEMU host block devices |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or |
| 7 | * later. See the COPYING file in the top-level directory. |
Markus Armbruster | 3618a09 | 2013-03-14 13:59:53 +0100 | [diff] [blame] | 8 | * |
| 9 | * This file incorporates work covered by the following copyright and |
| 10 | * permission notice: |
| 11 | * |
| 12 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 13 | * |
| 14 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 15 | * of this software and associated documentation files (the "Software"), to deal |
| 16 | * in the Software without restriction, including without limitation the rights |
| 17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 18 | * copies of the Software, and to permit persons to whom the Software is |
| 19 | * furnished to do so, subject to the following conditions: |
| 20 | * |
| 21 | * The above copyright notice and this permission notice shall be included in |
| 22 | * all copies or substantial portions of the Software. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 30 | * THE SOFTWARE. |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 31 | */ |
| 32 | |
Peter Maydell | d38ea87 | 2016-01-29 17:50:05 +0000 | [diff] [blame] | 33 | #include "qemu/osdep.h" |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 34 | #include "sysemu/block-backend.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 35 | #include "sysemu/blockdev.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 36 | #include "hw/block/block.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 37 | #include "block/blockjob.h" |
Max Reitz | 609f45e | 2018-06-14 21:14:28 +0200 | [diff] [blame] | 38 | #include "block/qdict.h" |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 39 | #include "block/throttle-groups.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 40 | #include "monitor/monitor.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 41 | #include "qemu/error-report.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 42 | #include "qemu/option.h" |
| 43 | #include "qemu/config-file.h" |
Markus Armbruster | 9af2398 | 2018-02-11 10:36:01 +0100 | [diff] [blame] | 44 | #include "qapi/qapi-commands-block.h" |
| 45 | #include "qapi/qapi-commands-transaction.h" |
| 46 | #include "qapi/qapi-visit-block-core.h" |
Markus Armbruster | 452fcdb | 2018-02-01 12:18:39 +0100 | [diff] [blame] | 47 | #include "qapi/qmp/qdict.h" |
Markus Armbruster | 15280c3 | 2018-02-01 12:18:36 +0100 | [diff] [blame] | 48 | #include "qapi/qmp/qnum.h" |
Markus Armbruster | 6b67395 | 2018-02-01 12:18:35 +0100 | [diff] [blame] | 49 | #include "qapi/qmp/qstring.h" |
Markus Armbruster | e688df6 | 2018-02-01 12:18:31 +0100 | [diff] [blame] | 50 | #include "qapi/error.h" |
Markus Armbruster | cc7a8ea | 2015-03-17 17:22:46 +0100 | [diff] [blame] | 51 | #include "qapi/qmp/qerror.h" |
Markus Armbruster | 47e6b29 | 2018-02-01 12:18:38 +0100 | [diff] [blame] | 52 | #include "qapi/qmp/qlist.h" |
Daniel P. Berrange | b3db211 | 2016-09-30 15:45:27 +0100 | [diff] [blame] | 53 | #include "qapi/qobject-output-visitor.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 54 | #include "sysemu/sysemu.h" |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 55 | #include "sysemu/iothread.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 56 | #include "block/block_int.h" |
Daniel P. Berrange | 0ab8ed1 | 2017-01-25 16:14:15 +0000 | [diff] [blame] | 57 | #include "block/trace.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 58 | #include "sysemu/arch_init.h" |
Thomas Huth | c616f16 | 2017-05-12 12:33:49 +0200 | [diff] [blame] | 59 | #include "sysemu/qtest.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 60 | #include "qemu/cutils.h" |
| 61 | #include "qemu/help_option.h" |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 62 | #include "qemu/throttle-options.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 63 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 64 | static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
| 65 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); |
| 66 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 67 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
| 68 | bool force, Error **errp); |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 69 | static void blockdev_remove_medium(bool has_device, const char *device, |
| 70 | bool has_id, const char *id, Error **errp); |
| 71 | static void blockdev_insert_medium(bool has_device, const char *device, |
| 72 | bool has_id, const char *id, |
| 73 | const char *node_name, Error **errp); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 74 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 75 | static const char *const if_name[IF_COUNT] = { |
| 76 | [IF_NONE] = "none", |
| 77 | [IF_IDE] = "ide", |
| 78 | [IF_SCSI] = "scsi", |
| 79 | [IF_FLOPPY] = "floppy", |
| 80 | [IF_PFLASH] = "pflash", |
| 81 | [IF_MTD] = "mtd", |
| 82 | [IF_SD] = "sd", |
| 83 | [IF_VIRTIO] = "virtio", |
| 84 | [IF_XEN] = "xen", |
| 85 | }; |
| 86 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 87 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 88 | /* |
| 89 | * Do not change these numbers! They govern how drive option |
| 90 | * index maps to unit and bus. That mapping is ABI. |
| 91 | * |
Wei Jiangang | 547cb15 | 2016-04-26 18:12:43 +0800 | [diff] [blame] | 92 | * All controllers used to implement if=T drives need to support |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 93 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 94 | * Otherwise, some index values map to "impossible" bus, unit |
| 95 | * values. |
| 96 | * |
| 97 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 98 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 99 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 100 | * the drive can't be set up. Regression. |
| 101 | */ |
| 102 | [IF_IDE] = 2, |
| 103 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 104 | }; |
| 105 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 106 | /** |
| 107 | * Boards may call this to offer board-by-board overrides |
| 108 | * of the default, global values. |
| 109 | */ |
| 110 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 111 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 112 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 113 | DriveInfo *dinfo; |
| 114 | |
| 115 | if (max_devs <= 0) { |
| 116 | return; |
| 117 | } |
| 118 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 119 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 120 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 121 | if (dinfo->type == type) { |
| 122 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 123 | " the %s interface, because a drive of that type has" |
| 124 | " already been added.\n", if_name[type]); |
| 125 | g_assert_not_reached(); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | if_max_devs[type] = max_devs; |
| 130 | } |
| 131 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 132 | /* |
| 133 | * We automatically delete the drive when a device using it gets |
| 134 | * unplugged. Questionable feature, but we can't just drop it. |
| 135 | * Device models call blockdev_mark_auto_del() to schedule the |
| 136 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 137 | * when deletion is actually safe. |
| 138 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 139 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 140 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 141 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 142 | BlockDriverState *bs = blk_bs(blk); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 143 | AioContext *aio_context; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 144 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 145 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 146 | return; |
| 147 | } |
| 148 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 149 | if (bs) { |
| 150 | aio_context = bdrv_get_aio_context(bs); |
| 151 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 152 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 153 | if (bs->job) { |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 154 | job_cancel(&bs->job->job, false); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | aio_context_release(aio_context); |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 158 | } |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 159 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 160 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 161 | } |
| 162 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 163 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 164 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 165 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 166 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 167 | if (dinfo && dinfo->auto_del) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 168 | monitor_remove_blk(blk); |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 169 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 170 | } |
| 171 | } |
| 172 | |
John Snow | d8f94e1 | 2014-10-01 14:19:27 -0400 | [diff] [blame] | 173 | /** |
| 174 | * Returns the current mapping of how many units per bus |
| 175 | * a particular interface can support. |
| 176 | * |
| 177 | * A positive integer indicates n units per bus. |
| 178 | * 0 implies the mapping has not been established. |
| 179 | * -1 indicates an invalid BlockInterfaceType was given. |
| 180 | */ |
| 181 | int drive_get_max_devs(BlockInterfaceType type) |
| 182 | { |
| 183 | if (type >= IF_IDE && type < IF_COUNT) { |
| 184 | return if_max_devs[type]; |
| 185 | } |
| 186 | |
| 187 | return -1; |
| 188 | } |
| 189 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 190 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 191 | { |
| 192 | int max_devs = if_max_devs[type]; |
| 193 | return max_devs ? index / max_devs : 0; |
| 194 | } |
| 195 | |
| 196 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 197 | { |
| 198 | int max_devs = if_max_devs[type]; |
| 199 | return max_devs ? index % max_devs : index; |
| 200 | } |
| 201 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 202 | QemuOpts *drive_def(const char *optstr) |
| 203 | { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 204 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 208 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 209 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 210 | QemuOpts *opts; |
| 211 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 212 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 213 | if (!opts) { |
| 214 | return NULL; |
| 215 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 216 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 217 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 218 | } |
| 219 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 220 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 221 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 222 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 223 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 224 | return opts; |
| 225 | } |
| 226 | |
| 227 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 228 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 229 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 230 | DriveInfo *dinfo; |
| 231 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 232 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 233 | dinfo = blk_legacy_dinfo(blk); |
| 234 | if (dinfo && dinfo->type == type |
| 235 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 236 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 237 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | return NULL; |
| 241 | } |
| 242 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 243 | void drive_check_orphaned(void) |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 244 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 245 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 246 | DriveInfo *dinfo; |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 247 | Location loc; |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 248 | bool orphans = false; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 249 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 250 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 251 | dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 252 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 253 | dinfo->type != IF_NONE) { |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 254 | loc_push_none(&loc); |
| 255 | qemu_opts_loc_restore(dinfo->opts); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 256 | error_report("machine type does not support" |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 257 | " if=%s,bus=%d,unit=%d", |
| 258 | if_name[dinfo->type], dinfo->bus, dinfo->unit); |
| 259 | loc_pop(&loc); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 260 | orphans = true; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 261 | } |
| 262 | } |
| 263 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 264 | if (orphans) { |
| 265 | exit(1); |
| 266 | } |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 267 | } |
| 268 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 269 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 270 | { |
| 271 | return drive_get(type, |
| 272 | drive_index_to_bus_id(type, index), |
| 273 | drive_index_to_unit_id(type, index)); |
| 274 | } |
| 275 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 276 | int drive_get_max_bus(BlockInterfaceType type) |
| 277 | { |
| 278 | int max_bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 279 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 280 | DriveInfo *dinfo; |
| 281 | |
| 282 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 283 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 284 | dinfo = blk_legacy_dinfo(blk); |
| 285 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 286 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 287 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 288 | } |
| 289 | return max_bus; |
| 290 | } |
| 291 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 292 | /* Get a block device. This should only be used for single-drive devices |
| 293 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 294 | appropriate bus. */ |
| 295 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 296 | { |
| 297 | static int next_block_unit[IF_COUNT]; |
| 298 | |
| 299 | return drive_get(type, 0, next_block_unit[type]++); |
| 300 | } |
| 301 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 302 | static void bdrv_format_print(void *opaque, const char *name) |
| 303 | { |
Markus Armbruster | 807105a | 2011-01-17 19:31:27 +0100 | [diff] [blame] | 304 | error_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 305 | } |
| 306 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 307 | typedef struct { |
| 308 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 309 | BlockDriverState *bs; |
| 310 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 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 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 329 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
| 330 | Error **errp) |
| 331 | { |
| 332 | const QListEntry *entry; |
| 333 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { |
| 334 | switch (qobject_type(entry->value)) { |
| 335 | |
| 336 | case QTYPE_QSTRING: { |
| 337 | unsigned long long length; |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 338 | const char *str = qstring_get_str(qobject_to(QString, |
| 339 | entry->value)); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 340 | if (parse_uint_full(str, &length, 10) == 0 && |
| 341 | length > 0 && length <= UINT_MAX) { |
| 342 | block_acct_add_interval(stats, (unsigned) length); |
| 343 | } else { |
| 344 | error_setg(errp, "Invalid interval length: %s", str); |
| 345 | return false; |
| 346 | } |
| 347 | break; |
| 348 | } |
| 349 | |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 350 | case QTYPE_QNUM: { |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 351 | int64_t length = qnum_get_int(qobject_to(QNum, entry->value)); |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 352 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 353 | if (length > 0 && length <= UINT_MAX) { |
| 354 | block_acct_add_interval(stats, (unsigned) length); |
| 355 | } else { |
| 356 | error_setg(errp, "Invalid interval length: %" PRId64, length); |
| 357 | return false; |
| 358 | } |
| 359 | break; |
| 360 | } |
| 361 | |
| 362 | default: |
| 363 | error_setg(errp, "The specification of stats-intervals is invalid"); |
| 364 | return false; |
| 365 | } |
| 366 | } |
| 367 | return true; |
| 368 | } |
| 369 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 370 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 371 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 372 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 373 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 374 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 375 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 376 | { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 377 | Error *local_error = NULL; |
| 378 | const char *aio; |
| 379 | |
| 380 | if (bdrv_flags) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 381 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 382 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 383 | } |
| 384 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 385 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
| 386 | if (!strcmp(aio, "native")) { |
| 387 | *bdrv_flags |= BDRV_O_NATIVE_AIO; |
| 388 | } else if (!strcmp(aio, "threads")) { |
| 389 | /* this is the default */ |
| 390 | } else { |
| 391 | error_setg(errp, "invalid aio option"); |
| 392 | return; |
| 393 | } |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | /* disk I/O throttling */ |
| 398 | if (throttling_group) { |
| 399 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 400 | } |
| 401 | |
| 402 | if (throttle_cfg) { |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 403 | throttle_config_init(throttle_cfg); |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 404 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 405 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 406 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 407 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 408 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 409 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 410 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 411 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 412 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 413 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 414 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 415 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 416 | |
| 417 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 418 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 419 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 420 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 421 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 422 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 423 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 424 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 425 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 426 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 427 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 428 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 429 | |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 430 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
| 431 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); |
| 432 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = |
| 433 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); |
| 434 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = |
| 435 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); |
| 436 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = |
| 437 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); |
| 438 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = |
| 439 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); |
| 440 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = |
| 441 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); |
| 442 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 443 | throttle_cfg->op_size = |
| 444 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 445 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 446 | if (!throttle_is_valid(throttle_cfg, errp)) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 447 | return; |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | if (detect_zeroes) { |
| 452 | *detect_zeroes = |
Marc-André Lureau | f7abe0e | 2017-08-24 10:46:10 +0200 | [diff] [blame] | 453 | qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 454 | qemu_opt_get(opts, "detect-zeroes"), |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 455 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 456 | &local_error); |
| 457 | if (local_error) { |
| 458 | error_propagate(errp, local_error); |
| 459 | return; |
| 460 | } |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 461 | } |
| 462 | } |
| 463 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 464 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 465 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 466 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 467 | { |
| 468 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 469 | int bdrv_flags = 0; |
| 470 | int on_read_error, on_write_error; |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 471 | bool account_invalid, account_failed; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 472 | bool writethrough, read_only; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 473 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 474 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 475 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 476 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 477 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 478 | QemuOpts *opts; |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 479 | QDict *interval_dict = NULL; |
| 480 | QList *interval_list = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 481 | const char *id; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 482 | BlockdevDetectZeroesOptions detect_zeroes = |
| 483 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
| 484 | const char *throttling_group = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 485 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 486 | /* Check common options by copying from bs_opts to opts, all other options |
| 487 | * stay in bs_opts for processing by bdrv_open(). */ |
| 488 | id = qdict_get_try_str(bs_opts, "id"); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 489 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 490 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 491 | error_propagate(errp, error); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 492 | goto err_no_opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 493 | } |
| 494 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 495 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 496 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 497 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 498 | goto early_err; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 499 | } |
| 500 | |
| 501 | if (id) { |
| 502 | qdict_del(bs_opts, "id"); |
| 503 | } |
| 504 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 505 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 506 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 507 | |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 508 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
| 509 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); |
| 510 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 511 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
| 512 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 513 | id = qemu_opts_id(opts); |
| 514 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 515 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
| 516 | qdict_array_split(interval_dict, &interval_list); |
| 517 | |
| 518 | if (qdict_size(interval_dict) != 0) { |
| 519 | error_setg(errp, "Invalid option stats-intervals.%s", |
| 520 | qdict_first(interval_dict)->key); |
| 521 | goto early_err; |
| 522 | } |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 523 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 524 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 525 | &detect_zeroes, &error); |
| 526 | if (error) { |
| 527 | error_propagate(errp, error); |
| 528 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 529 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 530 | |
| 531 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 532 | if (is_help_option(buf)) { |
| 533 | error_printf("Supported formats:"); |
| 534 | bdrv_iterate_format(bdrv_format_print, NULL); |
| 535 | error_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 536 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 537 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 538 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 539 | if (qdict_haskey(bs_opts, "driver")) { |
| 540 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 541 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 542 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 543 | qdict_put_str(bs_opts, "driver", buf); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 544 | } |
| 545 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 546 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 547 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 548 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 549 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 550 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 551 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 552 | } |
| 553 | } |
| 554 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 555 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 556 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 557 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 558 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 559 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 560 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 561 | } |
| 562 | } |
| 563 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 564 | if (snapshot) { |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 565 | bdrv_flags |= BDRV_O_SNAPSHOT; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 566 | } |
| 567 | |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 568 | read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); |
| 569 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 570 | /* init */ |
Kevin Wolf | 39c4ae9 | 2015-11-13 14:45:42 +0100 | [diff] [blame] | 571 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 572 | BlockBackendRootState *blk_rs; |
| 573 | |
Kevin Wolf | 6d0eb64 | 2017-01-20 17:07:26 +0100 | [diff] [blame] | 574 | blk = blk_new(0, BLK_PERM_ALL); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 575 | blk_rs = blk_get_root_state(blk); |
| 576 | blk_rs->open_flags = bdrv_flags; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 577 | blk_rs->read_only = read_only; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 578 | blk_rs->detect_zeroes = detect_zeroes; |
| 579 | |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 580 | qobject_unref(bs_opts); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 581 | } else { |
| 582 | if (file && !*file) { |
| 583 | file = NULL; |
| 584 | } |
| 585 | |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 586 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 587 | * with other callers) rather than what we want as the real defaults. |
| 588 | * Apply the defaults here instead. */ |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 589 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 590 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 591 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, |
| 592 | read_only ? "on" : "off"); |
Kevin Wolf | 72e775c | 2016-03-15 14:34:37 +0100 | [diff] [blame] | 593 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 594 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 595 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 596 | bdrv_flags |= BDRV_O_INACTIVE; |
| 597 | } |
| 598 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 599 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 600 | if (!blk) { |
| 601 | goto err_no_bs_opts; |
| 602 | } |
| 603 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 604 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 605 | bs->detect_zeroes = detect_zeroes; |
| 606 | |
Paolo Bonzini | 9caa6f3 | 2017-06-05 14:39:07 +0200 | [diff] [blame] | 607 | block_acct_setup(blk_get_stats(blk), account_invalid, account_failed); |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 608 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 609 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
| 610 | blk_unref(blk); |
| 611 | blk = NULL; |
| 612 | goto err_no_bs_opts; |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 613 | } |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 614 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 615 | |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 616 | /* disk I/O throttling */ |
| 617 | if (throttle_enabled(&cfg)) { |
| 618 | if (!throttling_group) { |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 619 | throttling_group = id; |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 620 | } |
| 621 | blk_io_limits_enable(blk, throttling_group); |
| 622 | blk_set_io_limits(blk, &cfg); |
| 623 | } |
| 624 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 625 | blk_set_enable_write_cache(blk, !writethrough); |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 626 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 627 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 628 | if (!monitor_add_blk(blk, id, errp)) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 629 | blk_unref(blk); |
| 630 | blk = NULL; |
| 631 | goto err_no_bs_opts; |
| 632 | } |
| 633 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 634 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 635 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 636 | qobject_unref(interval_dict); |
| 637 | qobject_unref(interval_list); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 638 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 639 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 640 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 641 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 642 | qobject_unref(interval_dict); |
| 643 | qobject_unref(interval_list); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 644 | err_no_opts: |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 645 | qobject_unref(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 646 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 647 | } |
| 648 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 649 | /* Takes the ownership of bs_opts */ |
| 650 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
| 651 | { |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 652 | int bdrv_flags = 0; |
| 653 | |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 654 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 655 | * with other callers) rather than what we want as the real defaults. |
| 656 | * Apply the defaults here instead. */ |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 657 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 658 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 659 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off"); |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 660 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 661 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 662 | bdrv_flags |= BDRV_O_INACTIVE; |
| 663 | } |
| 664 | |
Kevin Wolf | 74e1ae7 | 2016-09-20 20:48:52 +0200 | [diff] [blame] | 665 | return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 666 | } |
| 667 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 668 | void blockdev_close_all_bdrv_states(void) |
| 669 | { |
| 670 | BlockDriverState *bs, *next_bs; |
| 671 | |
| 672 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { |
| 673 | AioContext *ctx = bdrv_get_aio_context(bs); |
| 674 | |
| 675 | aio_context_acquire(ctx); |
| 676 | bdrv_unref(bs); |
| 677 | aio_context_release(ctx); |
| 678 | } |
| 679 | } |
| 680 | |
Max Reitz | 262b4e8 | 2016-03-16 19:54:41 +0100 | [diff] [blame] | 681 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
| 682 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) |
| 683 | { |
| 684 | return bs ? QTAILQ_NEXT(bs, monitor_list) |
| 685 | : QTAILQ_FIRST(&monitor_bdrv_states); |
| 686 | } |
| 687 | |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 688 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
| 689 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 690 | { |
| 691 | const char *value; |
| 692 | |
| 693 | value = qemu_opt_get(opts, from); |
| 694 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 695 | if (qemu_opt_find(opts, to)) { |
| 696 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 697 | "same time", to, from); |
| 698 | return; |
| 699 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 700 | } |
| 701 | |
| 702 | /* rename all items in opts */ |
| 703 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 704 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 705 | qemu_opt_unset(opts, from); |
| 706 | } |
| 707 | } |
| 708 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 709 | QemuOptsList qemu_legacy_drive_opts = { |
| 710 | .name = "drive", |
| 711 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 712 | .desc = { |
| 713 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 714 | .name = "bus", |
| 715 | .type = QEMU_OPT_NUMBER, |
| 716 | .help = "bus number", |
| 717 | },{ |
| 718 | .name = "unit", |
| 719 | .type = QEMU_OPT_NUMBER, |
| 720 | .help = "unit number (i.e. lun for scsi)", |
| 721 | },{ |
| 722 | .name = "index", |
| 723 | .type = QEMU_OPT_NUMBER, |
| 724 | .help = "index number", |
| 725 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 726 | .name = "media", |
| 727 | .type = QEMU_OPT_STRING, |
| 728 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 729 | },{ |
| 730 | .name = "if", |
| 731 | .type = QEMU_OPT_STRING, |
| 732 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 733 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 734 | .name = "file", |
| 735 | .type = QEMU_OPT_STRING, |
| 736 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 737 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 738 | |
| 739 | /* Options that are passed on, but have special semantics with -drive */ |
| 740 | { |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 741 | .name = BDRV_OPT_READ_ONLY, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 742 | .type = QEMU_OPT_BOOL, |
| 743 | .help = "open drive file as read-only", |
| 744 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 745 | .name = "rerror", |
| 746 | .type = QEMU_OPT_STRING, |
| 747 | .help = "read error action", |
| 748 | },{ |
| 749 | .name = "werror", |
| 750 | .type = QEMU_OPT_STRING, |
| 751 | .help = "write error action", |
| 752 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 753 | .name = "copy-on-read", |
| 754 | .type = QEMU_OPT_BOOL, |
| 755 | .help = "copy read data from backing file into image file", |
| 756 | }, |
| 757 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 758 | { /* end of list */ } |
| 759 | }, |
| 760 | }; |
| 761 | |
Markus Armbruster | 60e19e0 | 2014-06-06 14:50:58 +0200 | [diff] [blame] | 762 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 763 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 764 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 765 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 766 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 767 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 768 | QemuOpts *legacy_opts; |
| 769 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 770 | BlockInterfaceType type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 771 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 772 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 773 | bool read_only = false; |
| 774 | bool copy_on_read; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 775 | const char *filename; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 776 | Error *local_err = NULL; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 777 | int i; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 778 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 779 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 780 | static const struct { |
| 781 | const char *from; |
| 782 | const char *to; |
| 783 | } opt_renames[] = { |
| 784 | { "iops", "throttling.iops-total" }, |
| 785 | { "iops_rd", "throttling.iops-read" }, |
| 786 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 787 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 788 | { "bps", "throttling.bps-total" }, |
| 789 | { "bps_rd", "throttling.bps-read" }, |
| 790 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 791 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 792 | { "iops_max", "throttling.iops-total-max" }, |
| 793 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 794 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 795 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 796 | { "bps_max", "throttling.bps-total-max" }, |
| 797 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 798 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 799 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 800 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 801 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 802 | { "group", "throttling.group" }, |
| 803 | |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 804 | { "readonly", BDRV_OPT_READ_ONLY }, |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 805 | }; |
| 806 | |
| 807 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 808 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
| 809 | &local_err); |
| 810 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 811 | error_report_err(local_err); |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 812 | return NULL; |
| 813 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 814 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 815 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 816 | value = qemu_opt_get(all_opts, "cache"); |
| 817 | if (value) { |
| 818 | int flags = 0; |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 819 | bool writethrough; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 820 | |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 821 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 822 | error_report("invalid cache option"); |
| 823 | return NULL; |
| 824 | } |
| 825 | |
| 826 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 827 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 828 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 829 | !writethrough, &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 830 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 831 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 832 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 833 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 834 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 835 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 836 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 837 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 838 | } |
| 839 | qemu_opt_unset(all_opts, "cache"); |
| 840 | } |
| 841 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 842 | /* Get a QDict for processing the options */ |
| 843 | bs_opts = qdict_new(); |
| 844 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 845 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 846 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 847 | &error_abort); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 848 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 849 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 850 | error_report_err(local_err); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 851 | goto fail; |
| 852 | } |
| 853 | |
| 854 | /* Media type */ |
| 855 | value = qemu_opt_get(legacy_opts, "media"); |
| 856 | if (value) { |
| 857 | if (!strcmp(value, "disk")) { |
| 858 | media = MEDIA_DISK; |
| 859 | } else if (!strcmp(value, "cdrom")) { |
| 860 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 861 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 862 | } else { |
| 863 | error_report("'%s' invalid media", value); |
| 864 | goto fail; |
| 865 | } |
| 866 | } |
| 867 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 868 | /* copy-on-read is disabled with a warning for read-only devices */ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 869 | read_only |= qemu_opt_get_bool(legacy_opts, BDRV_OPT_READ_ONLY, false); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 870 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 871 | |
| 872 | if (read_only && copy_on_read) { |
Alistair Francis | 3dc6f86 | 2017-07-12 06:57:41 -0700 | [diff] [blame] | 873 | warn_report("disabling copy-on-read on read-only drive"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 874 | copy_on_read = false; |
| 875 | } |
| 876 | |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 877 | qdict_put_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); |
| 878 | qdict_put_str(bs_opts, "copy-on-read", copy_on_read ? "on" : "off"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 879 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 880 | /* Controller type */ |
| 881 | value = qemu_opt_get(legacy_opts, "if"); |
| 882 | if (value) { |
| 883 | for (type = 0; |
| 884 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 885 | type++) { |
| 886 | } |
| 887 | if (type == IF_COUNT) { |
| 888 | error_report("unsupported bus type '%s'", value); |
| 889 | goto fail; |
| 890 | } |
| 891 | } else { |
| 892 | type = block_default_type; |
| 893 | } |
| 894 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 895 | /* Device address specified by bus/unit or index. |
| 896 | * If none was specified, try to find the first free one. */ |
| 897 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 898 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 899 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 900 | |
| 901 | max_devs = if_max_devs[type]; |
| 902 | |
| 903 | if (index != -1) { |
| 904 | if (bus_id != 0 || unit_id != -1) { |
| 905 | error_report("index cannot be used with bus and unit"); |
| 906 | goto fail; |
| 907 | } |
| 908 | bus_id = drive_index_to_bus_id(type, index); |
| 909 | unit_id = drive_index_to_unit_id(type, index); |
| 910 | } |
| 911 | |
| 912 | if (unit_id == -1) { |
| 913 | unit_id = 0; |
| 914 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 915 | unit_id++; |
| 916 | if (max_devs && unit_id >= max_devs) { |
| 917 | unit_id -= max_devs; |
| 918 | bus_id++; |
| 919 | } |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | if (max_devs && unit_id >= max_devs) { |
| 924 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); |
| 925 | goto fail; |
| 926 | } |
| 927 | |
| 928 | if (drive_get(type, bus_id, unit_id) != NULL) { |
| 929 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
| 930 | bus_id, unit_id, index); |
| 931 | goto fail; |
| 932 | } |
| 933 | |
| 934 | /* no id supplied -> create one */ |
| 935 | if (qemu_opts_id(all_opts) == NULL) { |
| 936 | char *new_id; |
| 937 | const char *mediastr = ""; |
| 938 | if (type == IF_IDE || type == IF_SCSI) { |
| 939 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 940 | } |
| 941 | if (max_devs) { |
| 942 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 943 | mediastr, unit_id); |
| 944 | } else { |
| 945 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 946 | mediastr, unit_id); |
| 947 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 948 | qdict_put_str(bs_opts, "id", new_id); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 949 | g_free(new_id); |
| 950 | } |
| 951 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 952 | /* Add virtio block device */ |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 953 | if (type == IF_VIRTIO) { |
| 954 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 955 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 956 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 957 | if (arch_type == QEMU_ARCH_S390X) { |
Alexander Graf | 1f68f1d | 2015-06-16 23:06:33 +0200 | [diff] [blame] | 958 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 959 | } else { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 960 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 961 | } |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 962 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 963 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 964 | } |
| 965 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 966 | filename = qemu_opt_get(legacy_opts, "file"); |
| 967 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 968 | /* Check werror/rerror compatibility with if=... */ |
| 969 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 970 | if (werror != NULL) { |
| 971 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 972 | type != IF_NONE) { |
| 973 | error_report("werror is not supported by this bus type"); |
| 974 | goto fail; |
| 975 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 976 | qdict_put_str(bs_opts, "werror", werror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 980 | if (rerror != NULL) { |
| 981 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 982 | type != IF_NONE) { |
| 983 | error_report("rerror is not supported by this bus type"); |
| 984 | goto fail; |
| 985 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 986 | qdict_put_str(bs_opts, "rerror", rerror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 987 | } |
| 988 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 989 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 990 | blk = blockdev_init(filename, bs_opts, &local_err); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 991 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 992 | if (!blk) { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 993 | if (local_err) { |
Markus Armbruster | 565f65d | 2015-02-12 13:55:05 +0100 | [diff] [blame] | 994 | error_report_err(local_err); |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 995 | } |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 996 | goto fail; |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 997 | } else { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 998 | assert(!local_err); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 999 | } |
| 1000 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1001 | /* Create legacy DriveInfo */ |
| 1002 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1003 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1004 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1005 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1006 | dinfo->bus = bus_id; |
| 1007 | dinfo->unit = unit_id; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1008 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1009 | blk_set_legacy_dinfo(blk, dinfo); |
| 1010 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1011 | switch(type) { |
| 1012 | case IF_IDE: |
| 1013 | case IF_SCSI: |
| 1014 | case IF_XEN: |
| 1015 | case IF_NONE: |
| 1016 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1017 | break; |
| 1018 | default: |
| 1019 | break; |
| 1020 | } |
| 1021 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1022 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1023 | qemu_opts_del(legacy_opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 1024 | qobject_unref(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1025 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1026 | } |
| 1027 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1028 | static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) |
| 1029 | { |
| 1030 | BlockDriverState *bs; |
| 1031 | |
| 1032 | bs = bdrv_lookup_bs(name, name, errp); |
| 1033 | if (bs == NULL) { |
| 1034 | return NULL; |
| 1035 | } |
| 1036 | |
| 1037 | if (!bdrv_is_root_node(bs)) { |
| 1038 | error_setg(errp, "Need a root block node"); |
| 1039 | return NULL; |
| 1040 | } |
| 1041 | |
| 1042 | if (!bdrv_is_inserted(bs)) { |
| 1043 | error_setg(errp, "Device has no medium"); |
| 1044 | return NULL; |
| 1045 | } |
| 1046 | |
| 1047 | return bs; |
| 1048 | } |
| 1049 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 1050 | static BlockBackend *qmp_get_blk(const char *blk_name, const char *qdev_id, |
| 1051 | Error **errp) |
| 1052 | { |
| 1053 | BlockBackend *blk; |
| 1054 | |
| 1055 | if (!blk_name == !qdev_id) { |
| 1056 | error_setg(errp, "Need exactly one of 'device' and 'id'"); |
| 1057 | return NULL; |
| 1058 | } |
| 1059 | |
| 1060 | if (qdev_id) { |
| 1061 | blk = blk_by_qdev_id(qdev_id, errp); |
| 1062 | } else { |
| 1063 | blk = blk_by_name(blk_name); |
| 1064 | if (blk == NULL) { |
| 1065 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1066 | "Device '%s' not found", blk_name); |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | return blk; |
| 1071 | } |
| 1072 | |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame] | 1073 | void hmp_commit(Monitor *mon, const QDict *qdict) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1074 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1075 | const char *device = qdict_get_str(qdict, "device"); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1076 | BlockBackend *blk; |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 1077 | int ret; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1078 | |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1079 | if (!strcmp(device, "all")) { |
Max Reitz | da31d59 | 2016-03-16 19:54:32 +0100 | [diff] [blame] | 1080 | ret = blk_commit_all(); |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1081 | } else { |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1082 | BlockDriverState *bs; |
| 1083 | AioContext *aio_context; |
| 1084 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1085 | blk = blk_by_name(device); |
| 1086 | if (!blk) { |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1087 | monitor_printf(mon, "Device '%s' not found\n", device); |
Markus Armbruster | ac59eb9 | 2010-06-02 18:55:19 +0200 | [diff] [blame] | 1088 | return; |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1089 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1090 | if (!blk_is_available(blk)) { |
| 1091 | monitor_printf(mon, "Device '%s' has no medium\n", device); |
| 1092 | return; |
| 1093 | } |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1094 | |
| 1095 | bs = blk_bs(blk); |
| 1096 | aio_context = bdrv_get_aio_context(bs); |
| 1097 | aio_context_acquire(aio_context); |
| 1098 | |
| 1099 | ret = bdrv_commit(bs); |
| 1100 | |
| 1101 | aio_context_release(aio_context); |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1102 | } |
| 1103 | if (ret < 0) { |
| 1104 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, |
| 1105 | strerror(-ret)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1106 | } |
| 1107 | } |
| 1108 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1109 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1110 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1111 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1112 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1113 | list.value = action; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1114 | list.next = NULL; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1115 | qmp_transaction(&list, false, NULL, errp); |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1116 | } |
| 1117 | |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1118 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
| 1119 | bool has_node_name, const char *node_name, |
| 1120 | const char *snapshot_file, |
| 1121 | bool has_snapshot_node_name, |
| 1122 | const char *snapshot_node_name, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 1123 | bool has_format, const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1124 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1125 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1126 | BlockdevSnapshotSync snapshot = { |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1127 | .has_device = has_device, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1128 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1129 | .has_node_name = has_node_name, |
| 1130 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1131 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1132 | .has_snapshot_node_name = has_snapshot_node_name, |
| 1133 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1134 | .has_format = has_format, |
| 1135 | .format = (char *) format, |
| 1136 | .has_mode = has_mode, |
| 1137 | .mode = mode, |
| 1138 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1139 | TransactionAction action = { |
| 1140 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1141 | .u.blockdev_snapshot_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1142 | }; |
| 1143 | blockdev_do_action(&action, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1144 | } |
| 1145 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1146 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1147 | Error **errp) |
| 1148 | { |
| 1149 | BlockdevSnapshot snapshot_data = { |
| 1150 | .node = (char *) node, |
| 1151 | .overlay = (char *) overlay |
| 1152 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1153 | TransactionAction action = { |
| 1154 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1155 | .u.blockdev_snapshot.data = &snapshot_data, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1156 | }; |
| 1157 | blockdev_do_action(&action, errp); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1158 | } |
| 1159 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1160 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1161 | const char *name, |
| 1162 | Error **errp) |
| 1163 | { |
| 1164 | BlockdevSnapshotInternal snapshot = { |
| 1165 | .device = (char *) device, |
| 1166 | .name = (char *) name |
| 1167 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1168 | TransactionAction action = { |
| 1169 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1170 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1171 | }; |
| 1172 | blockdev_do_action(&action, errp); |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1173 | } |
| 1174 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1175 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 1176 | bool has_id, |
| 1177 | const char *id, |
| 1178 | bool has_name, |
| 1179 | const char *name, |
| 1180 | Error **errp) |
| 1181 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1182 | BlockDriverState *bs; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1183 | AioContext *aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1184 | QEMUSnapshotInfo sn; |
| 1185 | Error *local_err = NULL; |
| 1186 | SnapshotInfo *info = NULL; |
| 1187 | int ret; |
| 1188 | |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1189 | bs = qmp_get_root_bs(device, errp); |
| 1190 | if (!bs) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1191 | return NULL; |
| 1192 | } |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1193 | aio_context = bdrv_get_aio_context(bs); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1194 | aio_context_acquire(aio_context); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1195 | |
| 1196 | if (!has_id) { |
| 1197 | id = NULL; |
| 1198 | } |
| 1199 | |
| 1200 | if (!has_name) { |
| 1201 | name = NULL; |
| 1202 | } |
| 1203 | |
| 1204 | if (!id && !name) { |
| 1205 | error_setg(errp, "Name or id must be provided"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1206 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1207 | } |
| 1208 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1209 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
| 1210 | goto out_aio_context; |
| 1211 | } |
| 1212 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1213 | 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] | 1214 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1215 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1216 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1217 | } |
| 1218 | if (!ret) { |
| 1219 | error_setg(errp, |
| 1220 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1221 | "device '%s'", |
| 1222 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1223 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1224 | } |
| 1225 | |
| 1226 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1227 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1228 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1229 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1230 | } |
| 1231 | |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1232 | aio_context_release(aio_context); |
| 1233 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1234 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1235 | info->id = g_strdup(sn.id_str); |
| 1236 | info->name = g_strdup(sn.name); |
| 1237 | info->date_nsec = sn.date_nsec; |
| 1238 | info->date_sec = sn.date_sec; |
| 1239 | info->vm_state_size = sn.vm_state_size; |
| 1240 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1241 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
| 1242 | |
| 1243 | return info; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1244 | |
| 1245 | out_aio_context: |
| 1246 | aio_context_release(aio_context); |
| 1247 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1248 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1249 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1250 | /** |
| 1251 | * block_dirty_bitmap_lookup: |
| 1252 | * Return a dirty bitmap (if present), after validating |
| 1253 | * the node reference and bitmap names. |
| 1254 | * |
| 1255 | * @node: The name of the BDS node to search for bitmaps |
| 1256 | * @name: The name of the bitmap to search for |
| 1257 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. |
| 1258 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. |
| 1259 | * @errp: Output pointer for error information. Can be NULL. |
| 1260 | * |
| 1261 | * @return: A bitmap object on success, or NULL on failure. |
| 1262 | */ |
| 1263 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, |
| 1264 | const char *name, |
| 1265 | BlockDriverState **pbs, |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1266 | Error **errp) |
| 1267 | { |
| 1268 | BlockDriverState *bs; |
| 1269 | BdrvDirtyBitmap *bitmap; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1270 | |
| 1271 | if (!node) { |
| 1272 | error_setg(errp, "Node cannot be NULL"); |
| 1273 | return NULL; |
| 1274 | } |
| 1275 | if (!name) { |
| 1276 | error_setg(errp, "Bitmap name cannot be NULL"); |
| 1277 | return NULL; |
| 1278 | } |
| 1279 | bs = bdrv_lookup_bs(node, node, NULL); |
| 1280 | if (!bs) { |
| 1281 | error_setg(errp, "Node '%s' not found", node); |
| 1282 | return NULL; |
| 1283 | } |
| 1284 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1285 | bitmap = bdrv_find_dirty_bitmap(bs, name); |
| 1286 | if (!bitmap) { |
| 1287 | error_setg(errp, "Dirty bitmap '%s' not found", name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 1288 | return NULL; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1289 | } |
| 1290 | |
| 1291 | if (pbs) { |
| 1292 | *pbs = bs; |
| 1293 | } |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1294 | |
| 1295 | return bitmap; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1296 | } |
| 1297 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1298 | /* New and old BlockDriverState structs for atomic group operations */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1299 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1300 | typedef struct BlkActionState BlkActionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1301 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1302 | /** |
| 1303 | * BlkActionOps: |
| 1304 | * Table of operations that define an Action. |
| 1305 | * |
| 1306 | * @instance_size: Size of state struct, in bytes. |
| 1307 | * @prepare: Prepare the work, must NOT be NULL. |
| 1308 | * @commit: Commit the changes, can be NULL. |
| 1309 | * @abort: Abort the changes on fail, can be NULL. |
| 1310 | * @clean: Clean up resources after all transaction actions have called |
| 1311 | * commit() or abort(). Can be NULL. |
| 1312 | * |
| 1313 | * Only prepare() may fail. In a single transaction, only one of commit() or |
| 1314 | * abort() will be called. clean() will always be called if it is present. |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1315 | */ |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1316 | typedef struct BlkActionOps { |
| 1317 | size_t instance_size; |
| 1318 | void (*prepare)(BlkActionState *common, Error **errp); |
| 1319 | void (*commit)(BlkActionState *common); |
| 1320 | void (*abort)(BlkActionState *common); |
| 1321 | void (*clean)(BlkActionState *common); |
| 1322 | } BlkActionOps; |
| 1323 | |
| 1324 | /** |
| 1325 | * BlkActionState: |
| 1326 | * Describes one Action's state within a Transaction. |
| 1327 | * |
| 1328 | * @action: QAPI-defined enum identifying which Action to perform. |
| 1329 | * @ops: Table of ActionOps this Action can perform. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1330 | * @block_job_txn: Transaction which this action belongs to. |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1331 | * @entry: List membership for all Actions in this Transaction. |
| 1332 | * |
| 1333 | * This structure must be arranged as first member in a subclassed type, |
| 1334 | * assuming that the compiler will also arrange it to the same offsets as the |
| 1335 | * base class. |
| 1336 | */ |
| 1337 | struct BlkActionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1338 | TransactionAction *action; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1339 | const BlkActionOps *ops; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 1340 | JobTxn *block_job_txn; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1341 | TransactionProperties *txn_props; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1342 | QSIMPLEQ_ENTRY(BlkActionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1343 | }; |
| 1344 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1345 | /* internal snapshot private data */ |
| 1346 | typedef struct InternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1347 | BlkActionState common; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1348 | BlockDriverState *bs; |
| 1349 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1350 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1351 | } InternalSnapshotState; |
| 1352 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1353 | |
| 1354 | static int action_check_completion_mode(BlkActionState *s, Error **errp) |
| 1355 | { |
| 1356 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 1357 | error_setg(errp, |
| 1358 | "Action '%s' does not support Transaction property " |
| 1359 | "completion-mode = %s", |
Markus Armbruster | 977c736 | 2017-08-24 10:46:08 +0200 | [diff] [blame] | 1360 | TransactionActionKind_str(s->action->type), |
| 1361 | ActionCompletionMode_str(s->txn_props->completion_mode)); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1362 | return -1; |
| 1363 | } |
| 1364 | return 0; |
| 1365 | } |
| 1366 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1367 | static void internal_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1368 | Error **errp) |
| 1369 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1370 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1371 | const char *device; |
| 1372 | const char *name; |
| 1373 | BlockDriverState *bs; |
| 1374 | QEMUSnapshotInfo old_sn, *sn; |
| 1375 | bool ret; |
| 1376 | qemu_timeval tv; |
| 1377 | BlockdevSnapshotInternal *internal; |
| 1378 | InternalSnapshotState *state; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1379 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1380 | int ret1; |
| 1381 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1382 | g_assert(common->action->type == |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1383 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1384 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1385 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1386 | |
| 1387 | /* 1. parse input */ |
| 1388 | device = internal->device; |
| 1389 | name = internal->name; |
| 1390 | |
| 1391 | /* 2. check for validation */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1392 | if (action_check_completion_mode(common, errp) < 0) { |
| 1393 | return; |
| 1394 | } |
| 1395 | |
Kevin Wolf | 75dfd40 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1396 | bs = qmp_get_root_bs(device, errp); |
| 1397 | if (!bs) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1398 | return; |
| 1399 | } |
| 1400 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1401 | aio_context = bdrv_get_aio_context(bs); |
| 1402 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1403 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1404 | state->bs = bs; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1405 | |
| 1406 | /* Paired with .clean() */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1407 | bdrv_drained_begin(bs); |
| 1408 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1409 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1410 | goto out; |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1411 | } |
| 1412 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1413 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1414 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1415 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1416 | } |
| 1417 | |
| 1418 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1419 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1420 | "does not support internal snapshots", |
| 1421 | bs->drv->format_name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1422 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1423 | } |
| 1424 | |
| 1425 | if (!strlen(name)) { |
| 1426 | error_setg(errp, "Name is empty"); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1427 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1428 | } |
| 1429 | |
| 1430 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1431 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1432 | &local_err); |
| 1433 | if (local_err) { |
| 1434 | error_propagate(errp, local_err); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1435 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1436 | } else if (ret) { |
| 1437 | error_setg(errp, |
| 1438 | "Snapshot with name '%s' already exists on device '%s'", |
| 1439 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1440 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1441 | } |
| 1442 | |
| 1443 | /* 3. take the snapshot */ |
| 1444 | sn = &state->sn; |
| 1445 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1446 | qemu_gettimeofday(&tv); |
| 1447 | sn->date_sec = tv.tv_sec; |
| 1448 | sn->date_nsec = tv.tv_usec * 1000; |
| 1449 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1450 | |
| 1451 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1452 | if (ret1 < 0) { |
| 1453 | error_setg_errno(errp, -ret1, |
| 1454 | "Failed to create snapshot '%s' on device '%s'", |
| 1455 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1456 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1457 | } |
| 1458 | |
| 1459 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1460 | state->created = true; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1461 | |
| 1462 | out: |
| 1463 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1464 | } |
| 1465 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1466 | static void internal_snapshot_abort(BlkActionState *common) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1467 | { |
| 1468 | InternalSnapshotState *state = |
| 1469 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1470 | BlockDriverState *bs = state->bs; |
| 1471 | QEMUSnapshotInfo *sn = &state->sn; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1472 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1473 | Error *local_error = NULL; |
| 1474 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1475 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1476 | return; |
| 1477 | } |
| 1478 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1479 | aio_context = bdrv_get_aio_context(state->bs); |
| 1480 | aio_context_acquire(aio_context); |
| 1481 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1482 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { |
Markus Armbruster | c29b77f | 2015-12-18 16:35:14 +0100 | [diff] [blame] | 1483 | error_reportf_err(local_error, |
| 1484 | "Failed to delete snapshot with id '%s' and " |
| 1485 | "name '%s' on device '%s' in abort: ", |
| 1486 | sn->id_str, sn->name, |
| 1487 | bdrv_get_device_name(bs)); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1488 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1489 | |
| 1490 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1491 | } |
| 1492 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1493 | static void internal_snapshot_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1494 | { |
| 1495 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, |
| 1496 | common, common); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1497 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1498 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1499 | if (!state->bs) { |
| 1500 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1501 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1502 | |
| 1503 | aio_context = bdrv_get_aio_context(state->bs); |
| 1504 | aio_context_acquire(aio_context); |
| 1505 | |
| 1506 | bdrv_drained_end(state->bs); |
| 1507 | |
| 1508 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1509 | } |
| 1510 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1511 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1512 | typedef struct ExternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1513 | BlkActionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1514 | BlockDriverState *old_bs; |
| 1515 | BlockDriverState *new_bs; |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1516 | bool overlay_appended; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1517 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1518 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1519 | static void external_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1520 | Error **errp) |
| 1521 | { |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1522 | int flags = 0; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1523 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1524 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1525 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1526 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1527 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1528 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1529 | const char *snapshot_ref; |
| 1530 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1531 | const char *new_image_file; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1532 | ExternalSnapshotState *state = |
| 1533 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1534 | TransactionAction *action = common->action; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1535 | AioContext *aio_context; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1536 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1537 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1538 | * purpose but a different set of parameters */ |
| 1539 | switch (action->type) { |
| 1540 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1541 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1542 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1543 | device = s->node; |
| 1544 | node_name = s->node; |
| 1545 | new_image_file = NULL; |
| 1546 | snapshot_ref = s->overlay; |
| 1547 | } |
| 1548 | break; |
| 1549 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1550 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1551 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1552 | device = s->has_device ? s->device : NULL; |
| 1553 | node_name = s->has_node_name ? s->node_name : NULL; |
| 1554 | new_image_file = s->snapshot_file; |
| 1555 | snapshot_ref = NULL; |
| 1556 | } |
| 1557 | break; |
| 1558 | default: |
| 1559 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1560 | } |
| 1561 | |
| 1562 | /* start processing */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1563 | if (action_check_completion_mode(common, errp) < 0) { |
| 1564 | return; |
| 1565 | } |
| 1566 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1567 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1568 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1569 | return; |
| 1570 | } |
| 1571 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1572 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1573 | aio_context_acquire(aio_context); |
| 1574 | |
| 1575 | /* Paired with .clean() */ |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1576 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1577 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1578 | if (!bdrv_is_inserted(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1579 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1580 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1581 | } |
| 1582 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1583 | if (bdrv_op_is_blocked(state->old_bs, |
| 1584 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1585 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1586 | } |
| 1587 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1588 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1589 | if (bdrv_flush(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1590 | error_setg(errp, QERR_IO_ERROR); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1591 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1592 | } |
| 1593 | } |
| 1594 | |
Benoît Canet | 212a5a8 | 2014-01-23 21:31:36 +0100 | [diff] [blame] | 1595 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1596 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1597 | goto out; |
Benoît Canet | f6186f4 | 2013-10-02 14:33:48 +0200 | [diff] [blame] | 1598 | } |
| 1599 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1600 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1601 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1602 | const char *format = s->has_format ? s->format : "qcow2"; |
| 1603 | enum NewImageMode mode; |
| 1604 | const char *snapshot_node_name = |
| 1605 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1606 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1607 | if (node_name && !snapshot_node_name) { |
| 1608 | error_setg(errp, "New snapshot node name missing"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1609 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1610 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1611 | |
| 1612 | if (snapshot_node_name && |
| 1613 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
| 1614 | error_setg(errp, "New snapshot node name already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1615 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1616 | } |
| 1617 | |
| 1618 | flags = state->old_bs->open_flags; |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 1619 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_COPY_ON_READ); |
| 1620 | flags |= BDRV_O_NO_BACKING; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1621 | |
| 1622 | /* create new image w/backing file */ |
| 1623 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1624 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1625 | int64_t size = bdrv_getlength(state->old_bs); |
| 1626 | if (size < 0) { |
| 1627 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1628 | goto out; |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1629 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1630 | bdrv_img_create(new_image_file, format, |
| 1631 | state->old_bs->filename, |
| 1632 | state->old_bs->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 1633 | NULL, size, flags, false, &local_err); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1634 | if (local_err) { |
| 1635 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1636 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | options = qdict_new(); |
| 1641 | if (s->has_snapshot_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1642 | qdict_put_str(options, "node-name", snapshot_node_name); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1643 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1644 | qdict_put_str(options, "driver", format); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1645 | } |
| 1646 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1647 | state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, |
| 1648 | errp); |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1649 | /* We will manually add the backing_hd field to the bs later */ |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1650 | if (!state->new_bs) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1651 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1652 | } |
| 1653 | |
Kevin Wolf | 1f0c461 | 2016-03-22 18:38:44 +0100 | [diff] [blame] | 1654 | if (bdrv_has_blk(state->new_bs)) { |
Kevin Wolf | e467da7 | 2016-09-21 14:56:09 +0200 | [diff] [blame] | 1655 | error_setg(errp, "The snapshot is already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1656 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1657 | } |
| 1658 | |
| 1659 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, |
| 1660 | errp)) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1661 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1662 | } |
| 1663 | |
| 1664 | if (state->new_bs->backing != NULL) { |
| 1665 | error_setg(errp, "The snapshot already has a backing image"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1666 | goto out; |
Alberto Garcia | 08b24cf | 2015-11-03 12:32:35 +0200 | [diff] [blame] | 1667 | } |
| 1668 | |
| 1669 | if (!state->new_bs->drv->supports_backing) { |
| 1670 | error_setg(errp, "The snapshot does not support backing images"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1671 | goto out; |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1672 | } |
| 1673 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1674 | bdrv_set_aio_context(state->new_bs, aio_context); |
Fam Zheng | c26a5ab | 2017-04-07 14:54:09 +0800 | [diff] [blame] | 1675 | |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1676 | /* This removes our old bs and adds the new bs. This is an operation that |
| 1677 | * can fail, so we need to do it in .prepare; undoing it for abort is |
| 1678 | * always possible. */ |
| 1679 | bdrv_ref(state->new_bs); |
| 1680 | bdrv_append(state->new_bs, state->old_bs, &local_err); |
| 1681 | if (local_err) { |
| 1682 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1683 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1684 | } |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1685 | state->overlay_appended = true; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1686 | |
| 1687 | out: |
| 1688 | aio_context_release(aio_context); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1689 | } |
| 1690 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1691 | static void external_snapshot_commit(BlkActionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1692 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1693 | ExternalSnapshotState *state = |
| 1694 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1695 | AioContext *aio_context; |
| 1696 | |
| 1697 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1698 | aio_context_acquire(aio_context); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1699 | |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1700 | /* We don't need (or want) to use the transactional |
| 1701 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1702 | * don't want to abort all of them if one of them fails the reopen */ |
Paolo Bonzini | d3faa13 | 2017-06-05 14:38:50 +0200 | [diff] [blame] | 1703 | if (!atomic_read(&state->old_bs->copy_on_read)) { |
Kevin Wolf | 4c84498 | 2016-02-29 13:12:26 +0100 | [diff] [blame] | 1704 | bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR, |
| 1705 | NULL); |
| 1706 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1707 | |
| 1708 | aio_context_release(aio_context); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1709 | } |
| 1710 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1711 | static void external_snapshot_abort(BlkActionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1712 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1713 | ExternalSnapshotState *state = |
| 1714 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1715 | if (state->new_bs) { |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1716 | if (state->overlay_appended) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1717 | AioContext *aio_context; |
| 1718 | |
| 1719 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1720 | aio_context_acquire(aio_context); |
| 1721 | |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1722 | bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd() |
| 1723 | close state->old_bs; we need it */ |
| 1724 | bdrv_set_backing_hd(state->new_bs, NULL, &error_abort); |
Kevin Wolf | 5fe31c2 | 2017-03-06 16:20:51 +0100 | [diff] [blame] | 1725 | bdrv_replace_node(state->new_bs, state->old_bs, &error_abort); |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1726 | bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1727 | |
| 1728 | aio_context_release(aio_context); |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1729 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1730 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1731 | } |
| 1732 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1733 | static void external_snapshot_clean(BlkActionState *common) |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1734 | { |
| 1735 | ExternalSnapshotState *state = |
| 1736 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1737 | AioContext *aio_context; |
| 1738 | |
| 1739 | if (!state->old_bs) { |
| 1740 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1741 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1742 | |
| 1743 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1744 | aio_context_acquire(aio_context); |
| 1745 | |
| 1746 | bdrv_drained_end(state->old_bs); |
| 1747 | bdrv_unref(state->new_bs); |
| 1748 | |
| 1749 | aio_context_release(aio_context); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1750 | } |
| 1751 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1752 | typedef struct DriveBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1753 | BlkActionState common; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1754 | BlockDriverState *bs; |
| 1755 | BlockJob *job; |
| 1756 | } DriveBackupState; |
| 1757 | |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 1758 | static BlockJob *do_drive_backup(DriveBackup *backup, JobTxn *txn, |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 1759 | Error **errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1760 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1761 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1762 | { |
| 1763 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1764 | BlockDriverState *bs; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1765 | DriveBackup *backup; |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1766 | AioContext *aio_context; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1767 | Error *local_err = NULL; |
| 1768 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1769 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1770 | backup = common->action->u.drive_backup.data; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1771 | |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1772 | bs = qmp_get_root_bs(backup->device, errp); |
| 1773 | if (!bs) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1774 | return; |
| 1775 | } |
| 1776 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1777 | aio_context = bdrv_get_aio_context(bs); |
| 1778 | aio_context_acquire(aio_context); |
| 1779 | |
| 1780 | /* Paired with .clean() */ |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1781 | bdrv_drained_begin(bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1782 | |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1783 | state->bs = bs; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1784 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1785 | state->job = do_drive_backup(backup, common->block_job_txn, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1786 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1787 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1788 | goto out; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1789 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1790 | |
| 1791 | out: |
| 1792 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1793 | } |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1794 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1795 | static void drive_backup_commit(BlkActionState *common) |
| 1796 | { |
| 1797 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1798 | AioContext *aio_context; |
| 1799 | |
| 1800 | aio_context = bdrv_get_aio_context(state->bs); |
| 1801 | aio_context_acquire(aio_context); |
| 1802 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1803 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1804 | job_start(&state->job->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1805 | |
| 1806 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1807 | } |
| 1808 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1809 | static void drive_backup_abort(BlkActionState *common) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1810 | { |
| 1811 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1812 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1813 | if (state->job) { |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1814 | AioContext *aio_context; |
| 1815 | |
| 1816 | aio_context = bdrv_get_aio_context(state->bs); |
| 1817 | aio_context_acquire(aio_context); |
| 1818 | |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 1819 | job_cancel_sync(&state->job->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1820 | |
| 1821 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1822 | } |
| 1823 | } |
| 1824 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1825 | static void drive_backup_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1826 | { |
| 1827 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1828 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1829 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1830 | if (!state->bs) { |
| 1831 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1832 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1833 | |
| 1834 | aio_context = bdrv_get_aio_context(state->bs); |
| 1835 | aio_context_acquire(aio_context); |
| 1836 | |
| 1837 | bdrv_drained_end(state->bs); |
| 1838 | |
| 1839 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1840 | } |
| 1841 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1842 | typedef struct BlockdevBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1843 | BlkActionState common; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1844 | BlockDriverState *bs; |
| 1845 | BlockJob *job; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1846 | } BlockdevBackupState; |
| 1847 | |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 1848 | static BlockJob *do_blockdev_backup(BlockdevBackup *backup, JobTxn *txn, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1849 | Error **errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1850 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1851 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1852 | { |
| 1853 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1854 | BlockdevBackup *backup; |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1855 | BlockDriverState *bs, *target; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1856 | AioContext *aio_context; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1857 | Error *local_err = NULL; |
| 1858 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1859 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1860 | backup = common->action->u.blockdev_backup.data; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1861 | |
Vladimir Sementsov-Ogievskiy | 930fe17 | 2018-07-02 15:46:29 -0400 | [diff] [blame] | 1862 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1863 | if (!bs) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1864 | return; |
| 1865 | } |
| 1866 | |
Kevin Wolf | 39d990a | 2016-08-02 19:22:04 +0200 | [diff] [blame] | 1867 | target = bdrv_lookup_bs(backup->target, backup->target, errp); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1868 | if (!target) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1869 | return; |
| 1870 | } |
| 1871 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1872 | aio_context = bdrv_get_aio_context(bs); |
| 1873 | if (aio_context != bdrv_get_aio_context(target)) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1874 | error_setg(errp, "Backup between two IO threads is not implemented"); |
| 1875 | return; |
| 1876 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1877 | aio_context_acquire(aio_context); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1878 | state->bs = bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1879 | |
| 1880 | /* Paired with .clean() */ |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1881 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1882 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1883 | state->job = do_blockdev_backup(backup, common->block_job_txn, &local_err); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1884 | if (local_err) { |
| 1885 | error_propagate(errp, local_err); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1886 | goto out; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1887 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1888 | |
| 1889 | out: |
| 1890 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1891 | } |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1892 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1893 | static void blockdev_backup_commit(BlkActionState *common) |
| 1894 | { |
| 1895 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1896 | AioContext *aio_context; |
| 1897 | |
| 1898 | aio_context = bdrv_get_aio_context(state->bs); |
| 1899 | aio_context_acquire(aio_context); |
| 1900 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1901 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1902 | job_start(&state->job->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1903 | |
| 1904 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1905 | } |
| 1906 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1907 | static void blockdev_backup_abort(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1908 | { |
| 1909 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1910 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1911 | if (state->job) { |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1912 | AioContext *aio_context; |
| 1913 | |
| 1914 | aio_context = bdrv_get_aio_context(state->bs); |
| 1915 | aio_context_acquire(aio_context); |
| 1916 | |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 1917 | job_cancel_sync(&state->job->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1918 | |
| 1919 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1920 | } |
| 1921 | } |
| 1922 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1923 | static void blockdev_backup_clean(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1924 | { |
| 1925 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1926 | AioContext *aio_context; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1927 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1928 | if (!state->bs) { |
| 1929 | return; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1930 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1931 | |
| 1932 | aio_context = bdrv_get_aio_context(state->bs); |
| 1933 | aio_context_acquire(aio_context); |
| 1934 | |
| 1935 | bdrv_drained_end(state->bs); |
| 1936 | |
| 1937 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1938 | } |
| 1939 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1940 | typedef struct BlockDirtyBitmapState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1941 | BlkActionState common; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1942 | BdrvDirtyBitmap *bitmap; |
| 1943 | BlockDriverState *bs; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1944 | HBitmap *backup; |
| 1945 | bool prepared; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1946 | bool was_enabled; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1947 | } BlockDirtyBitmapState; |
| 1948 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1949 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1950 | Error **errp) |
| 1951 | { |
| 1952 | Error *local_err = NULL; |
| 1953 | BlockDirtyBitmapAdd *action; |
| 1954 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 1955 | common, common); |
| 1956 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1957 | if (action_check_completion_mode(common, errp) < 0) { |
| 1958 | return; |
| 1959 | } |
| 1960 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1961 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1962 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
| 1963 | qmp_block_dirty_bitmap_add(action->node, action->name, |
| 1964 | action->has_granularity, action->granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 1965 | action->has_persistent, action->persistent, |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 1966 | action->has_autoload, action->autoload, |
Vladimir Sementsov-Ogievskiy | a6e2ca5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1967 | action->has_x_disabled, action->x_disabled, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1968 | &local_err); |
| 1969 | |
| 1970 | if (!local_err) { |
| 1971 | state->prepared = true; |
| 1972 | } else { |
| 1973 | error_propagate(errp, local_err); |
| 1974 | } |
| 1975 | } |
| 1976 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1977 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1978 | { |
| 1979 | BlockDirtyBitmapAdd *action; |
| 1980 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 1981 | common, common); |
| 1982 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1983 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1984 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
| 1985 | * then the node reference and bitmap name must have been valid. |
| 1986 | */ |
| 1987 | if (state->prepared) { |
| 1988 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); |
| 1989 | } |
| 1990 | } |
| 1991 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1992 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1993 | Error **errp) |
| 1994 | { |
| 1995 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 1996 | common, common); |
| 1997 | BlockDirtyBitmap *action; |
| 1998 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1999 | if (action_check_completion_mode(common, errp) < 0) { |
| 2000 | return; |
| 2001 | } |
| 2002 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2003 | action = common->action->u.block_dirty_bitmap_clear.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2004 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2005 | action->name, |
| 2006 | &state->bs, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2007 | errp); |
| 2008 | if (!state->bitmap) { |
| 2009 | return; |
| 2010 | } |
| 2011 | |
| 2012 | if (bdrv_dirty_bitmap_frozen(state->bitmap)) { |
| 2013 | error_setg(errp, "Cannot modify a frozen bitmap"); |
| 2014 | return; |
Vladimir Sementsov-Ogievskiy | 4f43e95 | 2018-03-13 15:34:00 -0400 | [diff] [blame] | 2015 | } else if (bdrv_dirty_bitmap_qmp_locked(state->bitmap)) { |
| 2016 | error_setg(errp, "Cannot modify a locked bitmap"); |
| 2017 | return; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2018 | } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) { |
| 2019 | error_setg(errp, "Cannot clear a disabled bitmap"); |
| 2020 | return; |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 2021 | } else if (bdrv_dirty_bitmap_readonly(state->bitmap)) { |
| 2022 | error_setg(errp, "Cannot clear a readonly bitmap"); |
| 2023 | return; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2024 | } |
| 2025 | |
| 2026 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2027 | } |
| 2028 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2029 | static void block_dirty_bitmap_clear_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2030 | { |
| 2031 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2032 | common, common); |
| 2033 | |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 2034 | if (state->backup) { |
| 2035 | bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup); |
| 2036 | } |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2037 | } |
| 2038 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2039 | static void block_dirty_bitmap_clear_commit(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2040 | { |
| 2041 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2042 | common, common); |
| 2043 | |
| 2044 | hbitmap_free(state->backup); |
| 2045 | } |
| 2046 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2047 | static void block_dirty_bitmap_enable_prepare(BlkActionState *common, |
| 2048 | Error **errp) |
| 2049 | { |
| 2050 | BlockDirtyBitmap *action; |
| 2051 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2052 | common, common); |
| 2053 | |
| 2054 | if (action_check_completion_mode(common, errp) < 0) { |
| 2055 | return; |
| 2056 | } |
| 2057 | |
| 2058 | action = common->action->u.x_block_dirty_bitmap_enable.data; |
| 2059 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2060 | action->name, |
| 2061 | NULL, |
| 2062 | errp); |
| 2063 | if (!state->bitmap) { |
| 2064 | return; |
| 2065 | } |
| 2066 | |
| 2067 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 2068 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2069 | } |
| 2070 | |
| 2071 | static void block_dirty_bitmap_enable_abort(BlkActionState *common) |
| 2072 | { |
| 2073 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2074 | common, common); |
| 2075 | |
| 2076 | if (!state->was_enabled) { |
| 2077 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 2078 | } |
| 2079 | } |
| 2080 | |
| 2081 | static void block_dirty_bitmap_disable_prepare(BlkActionState *common, |
| 2082 | Error **errp) |
| 2083 | { |
| 2084 | BlockDirtyBitmap *action; |
| 2085 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2086 | common, common); |
| 2087 | |
| 2088 | if (action_check_completion_mode(common, errp) < 0) { |
| 2089 | return; |
| 2090 | } |
| 2091 | |
| 2092 | action = common->action->u.x_block_dirty_bitmap_disable.data; |
| 2093 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2094 | action->name, |
| 2095 | NULL, |
| 2096 | errp); |
| 2097 | if (!state->bitmap) { |
| 2098 | return; |
| 2099 | } |
| 2100 | |
| 2101 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 2102 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 2103 | } |
| 2104 | |
| 2105 | static void block_dirty_bitmap_disable_abort(BlkActionState *common) |
| 2106 | { |
| 2107 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2108 | common, common); |
| 2109 | |
| 2110 | if (state->was_enabled) { |
| 2111 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2112 | } |
| 2113 | } |
| 2114 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2115 | static void abort_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2116 | { |
| 2117 | error_setg(errp, "Transaction aborted using Abort action"); |
| 2118 | } |
| 2119 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2120 | static void abort_commit(BlkActionState *common) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2121 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 2122 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2123 | } |
| 2124 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2125 | static const BlkActionOps actions[] = { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2126 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
| 2127 | .instance_size = sizeof(ExternalSnapshotState), |
| 2128 | .prepare = external_snapshot_prepare, |
| 2129 | .commit = external_snapshot_commit, |
| 2130 | .abort = external_snapshot_abort, |
Alberto Garcia | 4ad6f3d | 2015-11-13 15:00:24 +0200 | [diff] [blame] | 2131 | .clean = external_snapshot_clean, |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2132 | }, |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2133 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2134 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2135 | .prepare = external_snapshot_prepare, |
| 2136 | .commit = external_snapshot_commit, |
| 2137 | .abort = external_snapshot_abort, |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 2138 | .clean = external_snapshot_clean, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2139 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2140 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 2141 | .instance_size = sizeof(DriveBackupState), |
| 2142 | .prepare = drive_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2143 | .commit = drive_backup_commit, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2144 | .abort = drive_backup_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2145 | .clean = drive_backup_clean, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2146 | }, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2147 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
| 2148 | .instance_size = sizeof(BlockdevBackupState), |
| 2149 | .prepare = blockdev_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2150 | .commit = blockdev_backup_commit, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2151 | .abort = blockdev_backup_abort, |
| 2152 | .clean = blockdev_backup_clean, |
| 2153 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2154 | [TRANSACTION_ACTION_KIND_ABORT] = { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2155 | .instance_size = sizeof(BlkActionState), |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2156 | .prepare = abort_prepare, |
| 2157 | .commit = abort_commit, |
| 2158 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2159 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 2160 | .instance_size = sizeof(InternalSnapshotState), |
| 2161 | .prepare = internal_snapshot_prepare, |
| 2162 | .abort = internal_snapshot_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2163 | .clean = internal_snapshot_clean, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2164 | }, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2165 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
| 2166 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2167 | .prepare = block_dirty_bitmap_add_prepare, |
| 2168 | .abort = block_dirty_bitmap_add_abort, |
| 2169 | }, |
| 2170 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { |
| 2171 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2172 | .prepare = block_dirty_bitmap_clear_prepare, |
| 2173 | .commit = block_dirty_bitmap_clear_commit, |
| 2174 | .abort = block_dirty_bitmap_clear_abort, |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2175 | }, |
| 2176 | [TRANSACTION_ACTION_KIND_X_BLOCK_DIRTY_BITMAP_ENABLE] = { |
| 2177 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2178 | .prepare = block_dirty_bitmap_enable_prepare, |
| 2179 | .abort = block_dirty_bitmap_enable_abort, |
| 2180 | }, |
| 2181 | [TRANSACTION_ACTION_KIND_X_BLOCK_DIRTY_BITMAP_DISABLE] = { |
| 2182 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2183 | .prepare = block_dirty_bitmap_disable_prepare, |
| 2184 | .abort = block_dirty_bitmap_disable_abort, |
| 2185 | } |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2186 | }; |
| 2187 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2188 | /** |
| 2189 | * Allocate a TransactionProperties structure if necessary, and fill |
| 2190 | * that structure with desired defaults if they are unset. |
| 2191 | */ |
| 2192 | static TransactionProperties *get_transaction_properties( |
| 2193 | TransactionProperties *props) |
| 2194 | { |
| 2195 | if (!props) { |
| 2196 | props = g_new0(TransactionProperties, 1); |
| 2197 | } |
| 2198 | |
| 2199 | if (!props->has_completion_mode) { |
| 2200 | props->has_completion_mode = true; |
| 2201 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; |
| 2202 | } |
| 2203 | |
| 2204 | return props; |
| 2205 | } |
| 2206 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2207 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2208 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 2209 | * any fail then we roll back all operations in the group. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2210 | */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2211 | void qmp_transaction(TransactionActionList *dev_list, |
| 2212 | bool has_props, |
| 2213 | struct TransactionProperties *props, |
| 2214 | Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2215 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2216 | TransactionActionList *dev_entry = dev_list; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2217 | JobTxn *block_job_txn = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2218 | BlkActionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 2219 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2220 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2221 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2222 | QSIMPLEQ_INIT(&snap_bdrv_states); |
| 2223 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2224 | /* Does this transaction get canceled as a group on failure? |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2225 | * If not, we don't really need to make a JobTxn. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2226 | */ |
| 2227 | props = get_transaction_properties(props); |
| 2228 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2229 | block_job_txn = job_txn_new(); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2230 | } |
| 2231 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2232 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2233 | bdrv_drain_all(); |
| 2234 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2235 | /* 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] | 2236 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2237 | TransactionAction *dev_info = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2238 | const BlkActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2239 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2240 | dev_info = dev_entry->value; |
| 2241 | dev_entry = dev_entry->next; |
| 2242 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2243 | assert(dev_info->type < ARRAY_SIZE(actions)); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2244 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2245 | ops = &actions[dev_info->type]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 2246 | assert(ops->instance_size > 0); |
| 2247 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2248 | state = g_malloc0(ops->instance_size); |
| 2249 | state->ops = ops; |
| 2250 | state->action = dev_info; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2251 | state->block_job_txn = block_job_txn; |
| 2252 | state->txn_props = props; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2253 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2254 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2255 | state->ops->prepare(state, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2256 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2257 | error_propagate(errp, local_err); |
| 2258 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2259 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2260 | } |
| 2261 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2262 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 2263 | if (state->ops->commit) { |
| 2264 | state->ops->commit(state); |
| 2265 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2266 | } |
| 2267 | |
| 2268 | /* success */ |
| 2269 | goto exit; |
| 2270 | |
| 2271 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2272 | /* failure, and it is all-or-none; roll back all operations */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2273 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
| 2274 | if (state->ops->abort) { |
| 2275 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2276 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2277 | } |
| 2278 | exit: |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2279 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
| 2280 | if (state->ops->clean) { |
| 2281 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2282 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2283 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2284 | } |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2285 | if (!has_props) { |
| 2286 | qapi_free_TransactionProperties(props); |
| 2287 | } |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2288 | job_txn_unref(block_job_txn); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2289 | } |
| 2290 | |
Kevin Wolf | fbe2d81 | 2016-09-20 13:38:46 +0200 | [diff] [blame] | 2291 | void qmp_eject(bool has_device, const char *device, |
| 2292 | bool has_id, const char *id, |
| 2293 | bool has_force, bool force, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2294 | { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2295 | Error *local_err = NULL; |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2296 | int rc; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2297 | |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2298 | if (!has_force) { |
| 2299 | force = false; |
| 2300 | } |
| 2301 | |
Kevin Wolf | fbe2d81 | 2016-09-20 13:38:46 +0200 | [diff] [blame] | 2302 | rc = do_open_tray(has_device ? device : NULL, |
| 2303 | has_id ? id : NULL, |
| 2304 | force, &local_err); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2305 | if (rc && rc != -ENOSYS) { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2306 | error_propagate(errp, local_err); |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 2307 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2308 | } |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2309 | error_free(local_err); |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2310 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2311 | blockdev_remove_medium(has_device, device, has_id, id, errp); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2312 | } |
| 2313 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2314 | void qmp_block_passwd(bool has_device, const char *device, |
| 2315 | bool has_node_name, const char *node_name, |
| 2316 | const char *password, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2317 | { |
Daniel P. Berrange | c01c214 | 2017-06-23 17:24:16 +0100 | [diff] [blame] | 2318 | error_setg(errp, |
| 2319 | "Setting block passwords directly is no longer supported"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2320 | } |
| 2321 | |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2322 | /* |
| 2323 | * Attempt to open the tray of @device. |
| 2324 | * If @force, ignore its tray lock. |
| 2325 | * Else, if the tray is locked, don't open it, but ask the guest to open it. |
| 2326 | * On error, store an error through @errp and return -errno. |
| 2327 | * If @device does not exist, return -ENODEV. |
| 2328 | * If it has no removable media, return -ENOTSUP. |
| 2329 | * If it has no tray, return -ENOSYS. |
| 2330 | * If the guest was asked to open the tray, return -EINPROGRESS. |
| 2331 | * Else, return 0. |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2332 | */ |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2333 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
| 2334 | bool force, Error **errp) |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2335 | { |
| 2336 | BlockBackend *blk; |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2337 | const char *device = qdev_id ?: blk_name; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2338 | bool locked; |
| 2339 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2340 | blk = qmp_get_blk(blk_name, qdev_id, errp); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2341 | if (!blk) { |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2342 | return -ENODEV; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2343 | } |
| 2344 | |
| 2345 | if (!blk_dev_has_removable_media(blk)) { |
| 2346 | error_setg(errp, "Device '%s' is not removable", device); |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2347 | return -ENOTSUP; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2348 | } |
| 2349 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2350 | if (!blk_dev_has_tray(blk)) { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2351 | error_setg(errp, "Device '%s' does not have a tray", device); |
| 2352 | return -ENOSYS; |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2353 | } |
| 2354 | |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2355 | if (blk_dev_is_tray_open(blk)) { |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2356 | return 0; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2357 | } |
| 2358 | |
| 2359 | locked = blk_dev_is_medium_locked(blk); |
| 2360 | if (locked) { |
| 2361 | blk_dev_eject_request(blk, force); |
| 2362 | } |
| 2363 | |
| 2364 | if (!locked || force) { |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2365 | blk_dev_change_media_cb(blk, false, &error_abort); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2366 | } |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2367 | |
| 2368 | if (locked && !force) { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2369 | error_setg(errp, "Device '%s' is locked and force was not specified, " |
| 2370 | "wait for tray to open and try again", device); |
| 2371 | return -EINPROGRESS; |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2372 | } |
| 2373 | |
| 2374 | return 0; |
| 2375 | } |
| 2376 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2377 | void qmp_blockdev_open_tray(bool has_device, const char *device, |
| 2378 | bool has_id, const char *id, |
| 2379 | bool has_force, bool force, |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2380 | Error **errp) |
| 2381 | { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2382 | Error *local_err = NULL; |
| 2383 | int rc; |
| 2384 | |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2385 | if (!has_force) { |
| 2386 | force = false; |
| 2387 | } |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2388 | rc = do_open_tray(has_device ? device : NULL, |
| 2389 | has_id ? id : NULL, |
| 2390 | force, &local_err); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2391 | if (rc && rc != -ENOSYS && rc != -EINPROGRESS) { |
| 2392 | error_propagate(errp, local_err); |
| 2393 | return; |
| 2394 | } |
| 2395 | error_free(local_err); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2396 | } |
| 2397 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2398 | void qmp_blockdev_close_tray(bool has_device, const char *device, |
| 2399 | bool has_id, const char *id, |
| 2400 | Error **errp) |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2401 | { |
| 2402 | BlockBackend *blk; |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2403 | Error *local_err = NULL; |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2404 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2405 | device = has_device ? device : NULL; |
| 2406 | id = has_id ? id : NULL; |
| 2407 | |
| 2408 | blk = qmp_get_blk(device, id, errp); |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2409 | if (!blk) { |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2410 | return; |
| 2411 | } |
| 2412 | |
| 2413 | if (!blk_dev_has_removable_media(blk)) { |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2414 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2415 | return; |
| 2416 | } |
| 2417 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2418 | if (!blk_dev_has_tray(blk)) { |
| 2419 | /* Ignore this command on tray-less devices */ |
| 2420 | return; |
| 2421 | } |
| 2422 | |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2423 | if (!blk_dev_is_tray_open(blk)) { |
| 2424 | return; |
| 2425 | } |
| 2426 | |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2427 | blk_dev_change_media_cb(blk, true, &local_err); |
| 2428 | if (local_err) { |
| 2429 | error_propagate(errp, local_err); |
| 2430 | return; |
| 2431 | } |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2432 | } |
| 2433 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2434 | static void blockdev_remove_medium(bool has_device, const char *device, |
| 2435 | bool has_id, const char *id, Error **errp) |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2436 | { |
| 2437 | BlockBackend *blk; |
| 2438 | BlockDriverState *bs; |
| 2439 | AioContext *aio_context; |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2440 | bool has_attached_device; |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2441 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2442 | device = has_device ? device : NULL; |
| 2443 | id = has_id ? id : NULL; |
| 2444 | |
| 2445 | blk = qmp_get_blk(device, id, errp); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2446 | if (!blk) { |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2447 | return; |
| 2448 | } |
| 2449 | |
| 2450 | /* For BBs without a device, we can exchange the BDS tree at will */ |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2451 | has_attached_device = blk_get_attached_dev(blk); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2452 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2453 | if (has_attached_device && !blk_dev_has_removable_media(blk)) { |
| 2454 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2455 | return; |
| 2456 | } |
| 2457 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2458 | if (has_attached_device && blk_dev_has_tray(blk) && |
| 2459 | !blk_dev_is_tray_open(blk)) |
| 2460 | { |
| 2461 | error_setg(errp, "Tray of device '%s' is not open", device ?: id); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2462 | return; |
| 2463 | } |
| 2464 | |
| 2465 | bs = blk_bs(blk); |
| 2466 | if (!bs) { |
| 2467 | return; |
| 2468 | } |
| 2469 | |
| 2470 | aio_context = bdrv_get_aio_context(bs); |
| 2471 | aio_context_acquire(aio_context); |
| 2472 | |
| 2473 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
| 2474 | goto out; |
| 2475 | } |
| 2476 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2477 | blk_remove_bs(blk); |
| 2478 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2479 | if (!blk_dev_has_tray(blk)) { |
| 2480 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be |
| 2481 | * called at all); therefore, the medium needs to be ejected here. |
| 2482 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load |
| 2483 | * value passed here (i.e. false). */ |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2484 | blk_dev_change_media_cb(blk, false, &error_abort); |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2485 | } |
| 2486 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2487 | out: |
| 2488 | aio_context_release(aio_context); |
| 2489 | } |
| 2490 | |
Max Reitz | 34ce111 | 2017-11-10 23:43:02 +0100 | [diff] [blame] | 2491 | void qmp_blockdev_remove_medium(const char *id, Error **errp) |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2492 | { |
| 2493 | blockdev_remove_medium(false, NULL, true, id, errp); |
| 2494 | } |
| 2495 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2496 | static void qmp_blockdev_insert_anon_medium(BlockBackend *blk, |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2497 | BlockDriverState *bs, Error **errp) |
| 2498 | { |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2499 | Error *local_err = NULL; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2500 | bool has_device; |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2501 | int ret; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2502 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2503 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2504 | has_device = blk_get_attached_dev(blk); |
| 2505 | |
| 2506 | if (has_device && !blk_dev_has_removable_media(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2507 | error_setg(errp, "Device is not removable"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2508 | return; |
| 2509 | } |
| 2510 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2511 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2512 | error_setg(errp, "Tray of the device is not open"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2513 | return; |
| 2514 | } |
| 2515 | |
| 2516 | if (blk_bs(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2517 | error_setg(errp, "There already is a medium in the device"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2518 | return; |
| 2519 | } |
| 2520 | |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2521 | ret = blk_insert_bs(blk, bs, errp); |
| 2522 | if (ret < 0) { |
| 2523 | return; |
| 2524 | } |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2525 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2526 | if (!blk_dev_has_tray(blk)) { |
| 2527 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be |
| 2528 | * called at all); therefore, the medium needs to be pushed into the |
| 2529 | * slot here. |
| 2530 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load |
| 2531 | * value passed here (i.e. true). */ |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2532 | blk_dev_change_media_cb(blk, true, &local_err); |
| 2533 | if (local_err) { |
| 2534 | error_propagate(errp, local_err); |
| 2535 | blk_remove_bs(blk); |
| 2536 | return; |
| 2537 | } |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2538 | } |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2539 | } |
| 2540 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2541 | static void blockdev_insert_medium(bool has_device, const char *device, |
| 2542 | bool has_id, const char *id, |
| 2543 | const char *node_name, Error **errp) |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2544 | { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2545 | BlockBackend *blk; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2546 | BlockDriverState *bs; |
| 2547 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2548 | blk = qmp_get_blk(has_device ? device : NULL, |
| 2549 | has_id ? id : NULL, |
| 2550 | errp); |
| 2551 | if (!blk) { |
| 2552 | return; |
| 2553 | } |
| 2554 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2555 | bs = bdrv_find_node(node_name); |
| 2556 | if (!bs) { |
| 2557 | error_setg(errp, "Node '%s' not found", node_name); |
| 2558 | return; |
| 2559 | } |
| 2560 | |
Kevin Wolf | 1f0c461 | 2016-03-22 18:38:44 +0100 | [diff] [blame] | 2561 | if (bdrv_has_blk(bs)) { |
Kevin Wolf | e467da7 | 2016-09-21 14:56:09 +0200 | [diff] [blame] | 2562 | error_setg(errp, "Node '%s' is already in use", node_name); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2563 | return; |
| 2564 | } |
| 2565 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2566 | qmp_blockdev_insert_anon_medium(blk, bs, errp); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2567 | } |
| 2568 | |
Max Reitz | 34ce111 | 2017-11-10 23:43:02 +0100 | [diff] [blame] | 2569 | void qmp_blockdev_insert_medium(const char *id, const char *node_name, |
| 2570 | Error **errp) |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2571 | { |
| 2572 | blockdev_insert_medium(false, NULL, true, id, node_name, errp); |
| 2573 | } |
| 2574 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2575 | void qmp_blockdev_change_medium(bool has_device, const char *device, |
| 2576 | bool has_id, const char *id, |
| 2577 | const char *filename, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2578 | bool has_format, const char *format, |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2579 | bool has_read_only, |
| 2580 | BlockdevChangeReadOnlyMode read_only, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2581 | Error **errp) |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2582 | { |
| 2583 | BlockBackend *blk; |
| 2584 | BlockDriverState *medium_bs = NULL; |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 2585 | int bdrv_flags; |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2586 | bool detect_zeroes; |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2587 | int rc; |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2588 | QDict *options = NULL; |
| 2589 | Error *err = NULL; |
| 2590 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2591 | blk = qmp_get_blk(has_device ? device : NULL, |
| 2592 | has_id ? id : NULL, |
| 2593 | errp); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2594 | if (!blk) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2595 | goto fail; |
| 2596 | } |
| 2597 | |
| 2598 | if (blk_bs(blk)) { |
| 2599 | blk_update_root_state(blk); |
| 2600 | } |
| 2601 | |
| 2602 | bdrv_flags = blk_get_open_flags_from_root_state(blk); |
Alyssa Milburn | 156abc2 | 2016-02-06 13:36:18 +0000 | [diff] [blame] | 2603 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
| 2604 | BDRV_O_PROTOCOL); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2605 | |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2606 | if (!has_read_only) { |
| 2607 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; |
| 2608 | } |
| 2609 | |
| 2610 | switch (read_only) { |
| 2611 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: |
| 2612 | break; |
| 2613 | |
| 2614 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: |
| 2615 | bdrv_flags &= ~BDRV_O_RDWR; |
| 2616 | break; |
| 2617 | |
| 2618 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: |
| 2619 | bdrv_flags |= BDRV_O_RDWR; |
| 2620 | break; |
| 2621 | |
| 2622 | default: |
| 2623 | abort(); |
| 2624 | } |
| 2625 | |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2626 | options = qdict_new(); |
| 2627 | detect_zeroes = blk_get_detect_zeroes_from_root_state(blk); |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 2628 | qdict_put_str(options, "detect-zeroes", detect_zeroes ? "on" : "off"); |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2629 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2630 | if (has_format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 2631 | qdict_put_str(options, "driver", format); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2632 | } |
| 2633 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 2634 | medium_bs = bdrv_open(filename, NULL, options, bdrv_flags, errp); |
| 2635 | if (!medium_bs) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2636 | goto fail; |
| 2637 | } |
| 2638 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2639 | rc = do_open_tray(has_device ? device : NULL, |
| 2640 | has_id ? id : NULL, |
| 2641 | false, &err); |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2642 | if (rc && rc != -ENOSYS) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2643 | error_propagate(errp, err); |
| 2644 | goto fail; |
| 2645 | } |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2646 | error_free(err); |
| 2647 | err = NULL; |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2648 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2649 | blockdev_remove_medium(has_device, device, has_id, id, &err); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2650 | if (err) { |
| 2651 | error_propagate(errp, err); |
| 2652 | goto fail; |
| 2653 | } |
| 2654 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2655 | qmp_blockdev_insert_anon_medium(blk, medium_bs, &err); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2656 | if (err) { |
| 2657 | error_propagate(errp, err); |
| 2658 | goto fail; |
| 2659 | } |
| 2660 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2661 | qmp_blockdev_close_tray(has_device, device, has_id, id, errp); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2662 | |
| 2663 | fail: |
| 2664 | /* If the medium has been inserted, the device has its own reference, so |
| 2665 | * ours must be relinquished; and if it has not been inserted successfully, |
| 2666 | * the reference must be relinquished anyway */ |
| 2667 | bdrv_unref(medium_bs); |
| 2668 | } |
| 2669 | |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2670 | /* throttling disk I/O limits */ |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2671 | void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2672 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2673 | ThrottleConfig cfg; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2674 | BlockDriverState *bs; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2675 | BlockBackend *blk; |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2676 | AioContext *aio_context; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2677 | |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2678 | blk = qmp_get_blk(arg->has_device ? arg->device : NULL, |
| 2679 | arg->has_id ? arg->id : NULL, |
| 2680 | errp); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2681 | if (!blk) { |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2682 | return; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2683 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2684 | |
| 2685 | aio_context = blk_get_aio_context(blk); |
| 2686 | aio_context_acquire(aio_context); |
| 2687 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2688 | bs = blk_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2689 | if (!bs) { |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2690 | error_setg(errp, "Device has no medium"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2691 | goto out; |
| 2692 | } |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2693 | |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 2694 | throttle_config_init(&cfg); |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2695 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps; |
| 2696 | cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd; |
| 2697 | cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2698 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2699 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops; |
| 2700 | cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd; |
| 2701 | cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2702 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2703 | if (arg->has_bps_max) { |
| 2704 | cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2705 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2706 | if (arg->has_bps_rd_max) { |
| 2707 | cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2708 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2709 | if (arg->has_bps_wr_max) { |
| 2710 | cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2711 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2712 | if (arg->has_iops_max) { |
| 2713 | cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2714 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2715 | if (arg->has_iops_rd_max) { |
| 2716 | cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2717 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2718 | if (arg->has_iops_wr_max) { |
| 2719 | cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2720 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2721 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2722 | if (arg->has_bps_max_length) { |
| 2723 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = arg->bps_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2724 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2725 | if (arg->has_bps_rd_max_length) { |
| 2726 | cfg.buckets[THROTTLE_BPS_READ].burst_length = arg->bps_rd_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2727 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2728 | if (arg->has_bps_wr_max_length) { |
| 2729 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = arg->bps_wr_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2730 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2731 | if (arg->has_iops_max_length) { |
| 2732 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = arg->iops_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2733 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2734 | if (arg->has_iops_rd_max_length) { |
| 2735 | cfg.buckets[THROTTLE_OPS_READ].burst_length = arg->iops_rd_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2736 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2737 | if (arg->has_iops_wr_max_length) { |
| 2738 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = arg->iops_wr_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2739 | } |
| 2740 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2741 | if (arg->has_iops_size) { |
| 2742 | cfg.op_size = arg->iops_size; |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2743 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2744 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 2745 | if (!throttle_is_valid(&cfg, errp)) { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2746 | goto out; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2747 | } |
| 2748 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2749 | if (throttle_enabled(&cfg)) { |
| 2750 | /* Enable I/O limits if they're not enabled yet, otherwise |
| 2751 | * just update the throttling group. */ |
Manos Pitsidianakis | 022cdc9 | 2017-08-25 16:20:23 +0300 | [diff] [blame] | 2752 | if (!blk_get_public(blk)->throttle_group_member.throttle_state) { |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2753 | blk_io_limits_enable(blk, |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2754 | arg->has_group ? arg->group : |
| 2755 | arg->has_device ? arg->device : |
| 2756 | arg->id); |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2757 | } else if (arg->has_group) { |
| 2758 | blk_io_limits_update_group(blk, arg->group); |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2759 | } |
| 2760 | /* Set the new throttling configuration */ |
Kevin Wolf | 9714807 | 2016-03-21 13:53:52 +0100 | [diff] [blame] | 2761 | blk_set_io_limits(blk, &cfg); |
Manos Pitsidianakis | 022cdc9 | 2017-08-25 16:20:23 +0300 | [diff] [blame] | 2762 | } else if (blk_get_public(blk)->throttle_group_member.throttle_state) { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2763 | /* If all throttling settings are set to 0, disable I/O limits */ |
Kevin Wolf | 9714807 | 2016-03-21 13:53:52 +0100 | [diff] [blame] | 2764 | blk_io_limits_disable(blk); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2765 | } |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2766 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2767 | out: |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2768 | aio_context_release(aio_context); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2769 | } |
| 2770 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2771 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
| 2772 | bool has_granularity, uint32_t granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2773 | bool has_persistent, bool persistent, |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2774 | bool has_autoload, bool autoload, |
Vladimir Sementsov-Ogievskiy | a6e2ca5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2775 | bool has_disabled, bool disabled, |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2776 | Error **errp) |
| 2777 | { |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2778 | BlockDriverState *bs; |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2779 | BdrvDirtyBitmap *bitmap; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2780 | |
| 2781 | if (!name || name[0] == '\0') { |
| 2782 | error_setg(errp, "Bitmap name cannot be empty"); |
| 2783 | return; |
| 2784 | } |
| 2785 | |
| 2786 | bs = bdrv_lookup_bs(node, node, errp); |
| 2787 | if (!bs) { |
| 2788 | return; |
| 2789 | } |
| 2790 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2791 | if (has_granularity) { |
| 2792 | if (granularity < 512 || !is_power_of_2(granularity)) { |
| 2793 | error_setg(errp, "Granularity must be power of 2 " |
| 2794 | "and at least 512"); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2795 | return; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2796 | } |
| 2797 | } else { |
| 2798 | /* Default to cluster size, if available: */ |
| 2799 | granularity = bdrv_get_default_bitmap_granularity(bs); |
| 2800 | } |
| 2801 | |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2802 | if (!has_persistent) { |
| 2803 | persistent = false; |
| 2804 | } |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2805 | |
Vladimir Sementsov-Ogievskiy | 3e99da5 | 2018-02-02 19:07:52 +0300 | [diff] [blame] | 2806 | if (has_autoload) { |
| 2807 | warn_report("Autoload option is deprecated and its value is ignored"); |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2808 | } |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2809 | |
Vladimir Sementsov-Ogievskiy | a6e2ca5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2810 | if (!has_disabled) { |
| 2811 | disabled = false; |
| 2812 | } |
| 2813 | |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2814 | if (persistent && |
| 2815 | !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp)) |
| 2816 | { |
| 2817 | return; |
| 2818 | } |
| 2819 | |
| 2820 | bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp); |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2821 | if (bitmap == NULL) { |
| 2822 | return; |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2823 | } |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2824 | |
Vladimir Sementsov-Ogievskiy | a6e2ca5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2825 | if (disabled) { |
| 2826 | bdrv_disable_dirty_bitmap(bitmap); |
| 2827 | } |
| 2828 | |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 2829 | bdrv_dirty_bitmap_set_persistance(bitmap, persistent); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2830 | } |
| 2831 | |
| 2832 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, |
| 2833 | Error **errp) |
| 2834 | { |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2835 | BlockDriverState *bs; |
| 2836 | BdrvDirtyBitmap *bitmap; |
Vladimir Sementsov-Ogievskiy | 5c36c1a | 2017-06-28 15:05:29 +0300 | [diff] [blame] | 2837 | Error *local_err = NULL; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2838 | |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2839 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2840 | if (!bitmap || !bs) { |
| 2841 | return; |
| 2842 | } |
| 2843 | |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2844 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2845 | error_setg(errp, |
| 2846 | "Bitmap '%s' is currently frozen and cannot be removed", |
| 2847 | name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2848 | return; |
Vladimir Sementsov-Ogievskiy | 4f43e95 | 2018-03-13 15:34:00 -0400 | [diff] [blame] | 2849 | } else if (bdrv_dirty_bitmap_qmp_locked(bitmap)) { |
| 2850 | error_setg(errp, |
| 2851 | "Bitmap '%s' is currently locked and cannot be removed", |
| 2852 | name); |
| 2853 | return; |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 2854 | } |
Vladimir Sementsov-Ogievskiy | 5c36c1a | 2017-06-28 15:05:29 +0300 | [diff] [blame] | 2855 | |
| 2856 | if (bdrv_dirty_bitmap_get_persistance(bitmap)) { |
| 2857 | bdrv_remove_persistent_dirty_bitmap(bs, name, &local_err); |
| 2858 | if (local_err != NULL) { |
| 2859 | error_propagate(errp, local_err); |
| 2860 | return; |
| 2861 | } |
| 2862 | } |
| 2863 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2864 | bdrv_release_dirty_bitmap(bs, bitmap); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2865 | } |
| 2866 | |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2867 | /** |
| 2868 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap |
| 2869 | * immediately after a full backup operation. |
| 2870 | */ |
| 2871 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, |
| 2872 | Error **errp) |
| 2873 | { |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2874 | BdrvDirtyBitmap *bitmap; |
| 2875 | BlockDriverState *bs; |
| 2876 | |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2877 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2878 | if (!bitmap || !bs) { |
| 2879 | return; |
| 2880 | } |
| 2881 | |
| 2882 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2883 | error_setg(errp, |
| 2884 | "Bitmap '%s' is currently frozen and cannot be modified", |
| 2885 | name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2886 | return; |
Vladimir Sementsov-Ogievskiy | 4f43e95 | 2018-03-13 15:34:00 -0400 | [diff] [blame] | 2887 | } else if (bdrv_dirty_bitmap_qmp_locked(bitmap)) { |
| 2888 | error_setg(errp, |
| 2889 | "Bitmap '%s' is currently locked and cannot be modified", |
| 2890 | name); |
| 2891 | return; |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2892 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { |
| 2893 | error_setg(errp, |
| 2894 | "Bitmap '%s' is currently disabled and cannot be cleared", |
| 2895 | name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 2896 | return; |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 2897 | } else if (bdrv_dirty_bitmap_readonly(bitmap)) { |
| 2898 | error_setg(errp, "Bitmap '%s' is readonly and cannot be cleared", name); |
| 2899 | return; |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2900 | } |
| 2901 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2902 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 2903 | } |
| 2904 | |
Vladimir Sementsov-Ogievskiy | 5c5d2e5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2905 | void qmp_x_block_dirty_bitmap_enable(const char *node, const char *name, |
| 2906 | Error **errp) |
| 2907 | { |
| 2908 | BlockDriverState *bs; |
| 2909 | BdrvDirtyBitmap *bitmap; |
| 2910 | |
| 2911 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 2912 | if (!bitmap) { |
| 2913 | return; |
| 2914 | } |
| 2915 | |
| 2916 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2917 | error_setg(errp, |
| 2918 | "Bitmap '%s' is currently frozen and cannot be enabled", |
| 2919 | name); |
| 2920 | return; |
| 2921 | } |
| 2922 | |
| 2923 | bdrv_enable_dirty_bitmap(bitmap); |
| 2924 | } |
| 2925 | |
| 2926 | void qmp_x_block_dirty_bitmap_disable(const char *node, const char *name, |
| 2927 | Error **errp) |
| 2928 | { |
| 2929 | BlockDriverState *bs; |
| 2930 | BdrvDirtyBitmap *bitmap; |
| 2931 | |
| 2932 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 2933 | if (!bitmap) { |
| 2934 | return; |
| 2935 | } |
| 2936 | |
| 2937 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
| 2938 | error_setg(errp, |
| 2939 | "Bitmap '%s' is currently frozen and cannot be disabled", |
| 2940 | name); |
| 2941 | return; |
| 2942 | } |
| 2943 | |
| 2944 | bdrv_disable_dirty_bitmap(bitmap); |
| 2945 | } |
| 2946 | |
Vladimir Sementsov-Ogievskiy | b598e53 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2947 | void qmp_x_block_dirty_bitmap_merge(const char *node, const char *dst_name, |
| 2948 | const char *src_name, Error **errp) |
| 2949 | { |
| 2950 | BlockDriverState *bs; |
| 2951 | BdrvDirtyBitmap *dst, *src; |
| 2952 | |
| 2953 | dst = block_dirty_bitmap_lookup(node, dst_name, &bs, errp); |
| 2954 | if (!dst) { |
| 2955 | return; |
| 2956 | } |
| 2957 | |
| 2958 | if (bdrv_dirty_bitmap_frozen(dst)) { |
| 2959 | error_setg(errp, "Bitmap '%s' is frozen and cannot be modified", |
| 2960 | dst_name); |
| 2961 | return; |
| 2962 | } else if (bdrv_dirty_bitmap_readonly(dst)) { |
| 2963 | error_setg(errp, "Bitmap '%s' is readonly and cannot be modified", |
| 2964 | dst_name); |
| 2965 | return; |
| 2966 | } |
| 2967 | |
| 2968 | src = bdrv_find_dirty_bitmap(bs, src_name); |
| 2969 | if (!src) { |
| 2970 | error_setg(errp, "Dirty bitmap '%s' not found", src_name); |
| 2971 | return; |
| 2972 | } |
| 2973 | |
| 2974 | bdrv_merge_dirty_bitmap(dst, src, errp); |
| 2975 | } |
| 2976 | |
Vladimir Sementsov-Ogievskiy | a3b5253 | 2017-06-28 15:05:25 +0300 | [diff] [blame] | 2977 | BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node, |
| 2978 | const char *name, |
| 2979 | Error **errp) |
| 2980 | { |
| 2981 | BdrvDirtyBitmap *bitmap; |
| 2982 | BlockDriverState *bs; |
| 2983 | BlockDirtyBitmapSha256 *ret = NULL; |
| 2984 | char *sha256; |
| 2985 | |
| 2986 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 2987 | if (!bitmap || !bs) { |
| 2988 | return NULL; |
| 2989 | } |
| 2990 | |
| 2991 | sha256 = bdrv_dirty_bitmap_sha256(bitmap, errp); |
| 2992 | if (sha256 == NULL) { |
| 2993 | return NULL; |
| 2994 | } |
| 2995 | |
| 2996 | ret = g_new(BlockDirtyBitmapSha256, 1); |
| 2997 | ret->sha256 = sha256; |
| 2998 | |
| 2999 | return ret; |
| 3000 | } |
| 3001 | |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 3002 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3003 | { |
| 3004 | const char *id = qdict_get_str(qdict, "id"); |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 3005 | BlockBackend *blk; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3006 | BlockDriverState *bs; |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3007 | AioContext *aio_context; |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 3008 | Error *local_err = NULL; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3009 | |
Kevin Wolf | 2073d41 | 2016-02-23 17:50:37 +0100 | [diff] [blame] | 3010 | bs = bdrv_find_node(id); |
| 3011 | if (bs) { |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 3012 | qmp_blockdev_del(id, &local_err); |
Kevin Wolf | 2073d41 | 2016-02-23 17:50:37 +0100 | [diff] [blame] | 3013 | if (local_err) { |
| 3014 | error_report_err(local_err); |
| 3015 | } |
| 3016 | return; |
| 3017 | } |
| 3018 | |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 3019 | blk = blk_by_name(id); |
| 3020 | if (!blk) { |
Markus Armbruster | b1422f2 | 2014-05-16 11:00:09 +0200 | [diff] [blame] | 3021 | error_report("Device '%s' not found", id); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 3022 | return; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3023 | } |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3024 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 3025 | if (!blk_legacy_dinfo(blk)) { |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 3026 | error_report("Deleting device added with blockdev-add" |
| 3027 | " is not supported"); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 3028 | return; |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 3029 | } |
| 3030 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3031 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3032 | aio_context_acquire(aio_context); |
| 3033 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3034 | bs = blk_bs(blk); |
| 3035 | if (bs) { |
| 3036 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
| 3037 | error_report_err(local_err); |
| 3038 | aio_context_release(aio_context); |
| 3039 | return; |
| 3040 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3041 | |
Max Reitz | 938abd4 | 2016-01-29 16:36:09 +0100 | [diff] [blame] | 3042 | blk_remove_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3043 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3044 | |
Max Reitz | 7c73587 | 2016-03-16 19:54:39 +0100 | [diff] [blame] | 3045 | /* Make the BlockBackend and the attached BlockDriverState anonymous */ |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 3046 | monitor_remove_blk(blk); |
| 3047 | |
Max Reitz | 7c73587 | 2016-03-16 19:54:39 +0100 | [diff] [blame] | 3048 | /* If this BlockBackend has a device attached to it, its refcount will be |
| 3049 | * decremented when the device is removed; otherwise we have to do so here. |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 3050 | */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 3051 | if (blk_get_attached_dev(blk)) { |
Stefan Hajnoczi | 293c51a | 2013-06-05 10:33:14 +0200 | [diff] [blame] | 3052 | /* Further I/O must not pause the guest */ |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 3053 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
| 3054 | BLOCKDEV_ON_ERROR_REPORT); |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 3055 | } else { |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 3056 | blk_unref(blk); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3057 | } |
| 3058 | |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3059 | aio_context_release(aio_context); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3060 | } |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3061 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3062 | void qmp_block_resize(bool has_device, const char *device, |
| 3063 | bool has_node_name, const char *node_name, |
| 3064 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3065 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3066 | Error *local_err = NULL; |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3067 | BlockBackend *blk = NULL; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3068 | BlockDriverState *bs; |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3069 | AioContext *aio_context; |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 3070 | int ret; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3071 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3072 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 3073 | has_node_name ? node_name : NULL, |
| 3074 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3075 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3076 | error_propagate(errp, local_err); |
| 3077 | return; |
| 3078 | } |
| 3079 | |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3080 | aio_context = bdrv_get_aio_context(bs); |
| 3081 | aio_context_acquire(aio_context); |
| 3082 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3083 | if (!bdrv_is_first_non_filter(bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3084 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3085 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3086 | } |
| 3087 | |
| 3088 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3089 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3090 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3091 | } |
| 3092 | |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 3093 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3094 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3095 | goto out; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 3096 | } |
| 3097 | |
Kevin Wolf | 6d0eb64 | 2017-01-20 17:07:26 +0100 | [diff] [blame] | 3098 | blk = blk_new(BLK_PERM_RESIZE, BLK_PERM_ALL); |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 3099 | ret = blk_insert_bs(blk, bs, errp); |
| 3100 | if (ret < 0) { |
| 3101 | goto out; |
| 3102 | } |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3103 | |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 3104 | bdrv_drained_begin(bs); |
Max Reitz | 3a691c5 | 2017-06-13 22:20:54 +0200 | [diff] [blame] | 3105 | ret = blk_truncate(blk, size, PREALLOC_MODE_OFF, errp); |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 3106 | bdrv_drained_end(bs); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3107 | |
| 3108 | out: |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3109 | blk_unref(blk); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3110 | aio_context_release(aio_context); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3111 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3112 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 3113 | void qmp_block_stream(bool has_job_id, const char *job_id, const char *device, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3114 | bool has_base, const char *base, |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3115 | bool has_base_node, const char *base_node, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3116 | bool has_backing_file, const char *backing_file, |
| 3117 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3118 | bool has_on_error, BlockdevOnError on_error, |
| 3119 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3120 | { |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3121 | BlockDriverState *bs, *iter; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3122 | BlockDriverState *base_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3123 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3124 | Error *local_err = NULL; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3125 | const char *base_name = NULL; |
John Snow | cf6320d | 2018-09-06 09:02:12 -0400 | [diff] [blame^] | 3126 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3127 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3128 | if (!has_on_error) { |
| 3129 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3130 | } |
| 3131 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3132 | bs = bdrv_lookup_bs(device, device, errp); |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3133 | if (!bs) { |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3134 | return; |
| 3135 | } |
| 3136 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3137 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3138 | aio_context_acquire(aio_context); |
| 3139 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3140 | if (has_base && has_base_node) { |
| 3141 | error_setg(errp, "'base' and 'base-node' cannot be specified " |
| 3142 | "at the same time"); |
| 3143 | goto out; |
| 3144 | } |
| 3145 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3146 | if (has_base) { |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3147 | base_bs = bdrv_find_backing_image(bs, base); |
| 3148 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3149 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3150 | goto out; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3151 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3152 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3153 | base_name = base; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3154 | } |
| 3155 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3156 | if (has_base_node) { |
| 3157 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 3158 | if (!base_bs) { |
| 3159 | goto out; |
| 3160 | } |
| 3161 | if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { |
| 3162 | error_setg(errp, "Node '%s' is not a backing image of '%s'", |
| 3163 | base_node, device); |
| 3164 | goto out; |
| 3165 | } |
| 3166 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 3167 | base_name = base_bs->filename; |
| 3168 | } |
| 3169 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3170 | /* Check for op blockers in the whole chain between bs and base */ |
| 3171 | for (iter = bs; iter && iter != base_bs; iter = backing_bs(iter)) { |
| 3172 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { |
| 3173 | goto out; |
| 3174 | } |
| 3175 | } |
| 3176 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3177 | /* if we are streaming the entire chain, the result will have no backing |
| 3178 | * file, and specifying one is therefore an error */ |
| 3179 | if (base_bs == NULL && has_backing_file) { |
| 3180 | error_setg(errp, "backing file specified, but streaming the " |
| 3181 | "entire chain"); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3182 | goto out; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3183 | } |
| 3184 | |
| 3185 | /* backing_file string overrides base bs filename */ |
| 3186 | base_name = has_backing_file ? backing_file : base_name; |
| 3187 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 3188 | stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name, |
John Snow | cf6320d | 2018-09-06 09:02:12 -0400 | [diff] [blame^] | 3189 | job_flags, has_speed ? speed : 0, on_error, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3190 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3191 | error_propagate(errp, local_err); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3192 | goto out; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3193 | } |
| 3194 | |
| 3195 | trace_qmp_block_stream(bs, bs->job); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3196 | |
| 3197 | out: |
| 3198 | aio_context_release(aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3199 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3200 | |
Alberto Garcia | fd62c60 | 2016-07-05 17:29:00 +0300 | [diff] [blame] | 3201 | void qmp_block_commit(bool has_job_id, const char *job_id, const char *device, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3202 | bool has_base, const char *base, |
| 3203 | bool has_top, const char *top, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3204 | bool has_backing_file, const char *backing_file, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3205 | bool has_speed, int64_t speed, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3206 | bool has_filter_node_name, const char *filter_node_name, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3207 | Error **errp) |
| 3208 | { |
| 3209 | BlockDriverState *bs; |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3210 | BlockDriverState *iter; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3211 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3212 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3213 | Error *local_err = NULL; |
| 3214 | /* This will be part of the QMP command, if/when the |
| 3215 | * BlockdevOnError change for blkmirror makes it in |
| 3216 | */ |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 3217 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 3218 | int job_flags = JOB_DEFAULT; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3219 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 3220 | if (!has_speed) { |
| 3221 | speed = 0; |
| 3222 | } |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3223 | if (!has_filter_node_name) { |
| 3224 | filter_node_name = NULL; |
| 3225 | } |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 3226 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3227 | /* Important Note: |
| 3228 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 3229 | * live commit feature versions; for this to work, we must make sure to |
| 3230 | * perform the device lookup before any generic errors that may occur in a |
| 3231 | * scenario in which all optional arguments are omitted. */ |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3232 | bs = qmp_get_root_bs(device, &local_err); |
| 3233 | if (!bs) { |
| 3234 | bs = bdrv_lookup_bs(device, device, NULL); |
| 3235 | if (!bs) { |
| 3236 | error_free(local_err); |
| 3237 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3238 | "Device '%s' not found", device); |
| 3239 | } else { |
| 3240 | error_propagate(errp, local_err); |
| 3241 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3242 | return; |
| 3243 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3244 | |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3245 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3246 | aio_context_acquire(aio_context); |
| 3247 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3248 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3249 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 3250 | } |
| 3251 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3252 | /* default top_bs is the active layer */ |
| 3253 | top_bs = bs; |
| 3254 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3255 | if (has_top && top) { |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3256 | if (strcmp(bs->filename, top) != 0) { |
| 3257 | top_bs = bdrv_find_backing_image(bs, top); |
| 3258 | } |
| 3259 | } |
| 3260 | |
| 3261 | if (top_bs == NULL) { |
| 3262 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3263 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3264 | } |
| 3265 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3266 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 3267 | |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3268 | if (has_base && base) { |
| 3269 | base_bs = bdrv_find_backing_image(top_bs, base); |
| 3270 | } else { |
| 3271 | base_bs = bdrv_find_base(top_bs); |
| 3272 | } |
| 3273 | |
| 3274 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3275 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3276 | goto out; |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3277 | } |
| 3278 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3279 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 3280 | |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3281 | for (iter = top_bs; iter != backing_bs(base_bs); iter = backing_bs(iter)) { |
| 3282 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 3283 | goto out; |
| 3284 | } |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3285 | } |
| 3286 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3287 | /* Do not allow attempts to commit an image into itself */ |
| 3288 | if (top_bs == base_bs) { |
| 3289 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3290 | goto out; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3291 | } |
| 3292 | |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3293 | if (top_bs == bs) { |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3294 | if (has_backing_file) { |
| 3295 | error_setg(errp, "'backing-file' specified," |
| 3296 | " but 'top' is the active layer"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3297 | goto out; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3298 | } |
John Snow | 47970df | 2016-10-27 12:06:57 -0400 | [diff] [blame] | 3299 | commit_active_start(has_job_id ? job_id : NULL, bs, base_bs, |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 3300 | job_flags, speed, on_error, |
Fam Zheng | 78bbd91 | 2017-04-21 20:27:04 +0800 | [diff] [blame] | 3301 | filter_node_name, NULL, NULL, false, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3302 | } else { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3303 | BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); |
| 3304 | if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 3305 | goto out; |
| 3306 | } |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 3307 | commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, job_flags, |
| 3308 | speed, on_error, has_backing_file ? backing_file : NULL, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3309 | filter_node_name, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3310 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3311 | if (local_err != NULL) { |
| 3312 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3313 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3314 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3315 | |
| 3316 | out: |
| 3317 | aio_context_release(aio_context); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3318 | } |
| 3319 | |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 3320 | static BlockJob *do_drive_backup(DriveBackup *backup, JobTxn *txn, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3321 | Error **errp) |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3322 | { |
| 3323 | BlockDriverState *bs; |
| 3324 | BlockDriverState *target_bs; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3325 | BlockDriverState *source = NULL; |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3326 | BlockJob *job = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3327 | BdrvDirtyBitmap *bmap = NULL; |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3328 | AioContext *aio_context; |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3329 | QDict *options = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3330 | Error *local_err = NULL; |
Kevin Wolf | bb02b65 | 2018-04-19 17:54:56 +0200 | [diff] [blame] | 3331 | int flags, job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3332 | int64_t size; |
Fam Zheng | fc0932f | 2017-05-03 00:35:53 +0800 | [diff] [blame] | 3333 | bool set_backing_hd = false; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3334 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3335 | if (!backup->has_speed) { |
| 3336 | backup->speed = 0; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3337 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3338 | if (!backup->has_on_source_error) { |
| 3339 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3340 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3341 | if (!backup->has_on_target_error) { |
| 3342 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3343 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3344 | if (!backup->has_mode) { |
| 3345 | backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 3346 | } |
| 3347 | if (!backup->has_job_id) { |
| 3348 | backup->job_id = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3349 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3350 | if (!backup->has_auto_finalize) { |
| 3351 | backup->auto_finalize = true; |
| 3352 | } |
| 3353 | if (!backup->has_auto_dismiss) { |
| 3354 | backup->auto_dismiss = true; |
| 3355 | } |
Pavel Butsykin | 13b9414 | 2016-07-22 11:17:52 +0300 | [diff] [blame] | 3356 | if (!backup->has_compress) { |
| 3357 | backup->compress = false; |
| 3358 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3359 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3360 | bs = qmp_get_root_bs(backup->device, errp); |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3361 | if (!bs) { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3362 | return NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3363 | } |
| 3364 | |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3365 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3366 | aio_context_acquire(aio_context); |
| 3367 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3368 | if (!backup->has_format) { |
| 3369 | backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ? |
| 3370 | NULL : (char*) bs->drv->format_name; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3371 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3372 | |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3373 | /* Early check to avoid creating target */ |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 3374 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3375 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3376 | } |
| 3377 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3378 | flags = bs->open_flags | BDRV_O_RDWR; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3379 | |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3380 | /* See if we have a backing HD we can use to create our new image |
| 3381 | * on top of. */ |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3382 | if (backup->sync == MIRROR_SYNC_MODE_TOP) { |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3383 | source = backing_bs(bs); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3384 | if (!source) { |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3385 | backup->sync = MIRROR_SYNC_MODE_FULL; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3386 | } |
| 3387 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3388 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3389 | source = bs; |
Fam Zheng | fc0932f | 2017-05-03 00:35:53 +0800 | [diff] [blame] | 3390 | flags |= BDRV_O_NO_BACKING; |
| 3391 | set_backing_hd = true; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3392 | } |
| 3393 | |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3394 | size = bdrv_getlength(bs); |
| 3395 | if (size < 0) { |
| 3396 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3397 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3398 | } |
| 3399 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3400 | if (backup->mode != NEW_IMAGE_MODE_EXISTING) { |
| 3401 | assert(backup->format); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3402 | if (source) { |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3403 | bdrv_img_create(backup->target, backup->format, source->filename, |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3404 | source->drv->format_name, NULL, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3405 | size, flags, false, &local_err); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3406 | } else { |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3407 | bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3408 | size, flags, false, &local_err); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 3409 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3410 | } |
| 3411 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3412 | if (local_err) { |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3413 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3414 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3415 | } |
| 3416 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3417 | if (backup->format) { |
Fam Zheng | fc0932f | 2017-05-03 00:35:53 +0800 | [diff] [blame] | 3418 | if (!options) { |
| 3419 | options = qdict_new(); |
| 3420 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3421 | qdict_put_str(options, "driver", backup->format); |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3422 | } |
| 3423 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3424 | target_bs = bdrv_open(backup->target, NULL, options, flags, errp); |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 3425 | if (!target_bs) { |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3426 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3427 | } |
| 3428 | |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3429 | bdrv_set_aio_context(target_bs, aio_context); |
| 3430 | |
Fam Zheng | fc0932f | 2017-05-03 00:35:53 +0800 | [diff] [blame] | 3431 | if (set_backing_hd) { |
| 3432 | bdrv_set_backing_hd(target_bs, source, &local_err); |
| 3433 | if (local_err) { |
| 3434 | bdrv_unref(target_bs); |
| 3435 | goto out; |
| 3436 | } |
| 3437 | } |
| 3438 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3439 | if (backup->has_bitmap) { |
| 3440 | bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3441 | if (!bmap) { |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3442 | error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap); |
Max Reitz | 0702d3d | 2015-11-09 23:39:10 +0100 | [diff] [blame] | 3443 | bdrv_unref(target_bs); |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3444 | goto out; |
| 3445 | } |
Vladimir Sementsov-Ogievskiy | 4f43e95 | 2018-03-13 15:34:00 -0400 | [diff] [blame] | 3446 | if (bdrv_dirty_bitmap_qmp_locked(bmap)) { |
| 3447 | error_setg(errp, |
| 3448 | "Bitmap '%s' is currently locked and cannot be used for " |
| 3449 | "backup", backup->bitmap); |
| 3450 | goto out; |
| 3451 | } |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3452 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3453 | if (!backup->auto_finalize) { |
Kevin Wolf | bb02b65 | 2018-04-19 17:54:56 +0200 | [diff] [blame] | 3454 | job_flags |= JOB_MANUAL_FINALIZE; |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3455 | } |
| 3456 | if (!backup->auto_dismiss) { |
Kevin Wolf | bb02b65 | 2018-04-19 17:54:56 +0200 | [diff] [blame] | 3457 | job_flags |= JOB_MANUAL_DISMISS; |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3458 | } |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3459 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3460 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
| 3461 | backup->sync, bmap, backup->compress, |
| 3462 | backup->on_source_error, backup->on_target_error, |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3463 | job_flags, NULL, NULL, txn, &local_err); |
Kevin Wolf | 5c438bc | 2016-04-14 13:09:53 +0200 | [diff] [blame] | 3464 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3465 | if (local_err != NULL) { |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3466 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3467 | goto out; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3468 | } |
Stefan Hajnoczi | 761731b | 2014-10-21 12:03:56 +0100 | [diff] [blame] | 3469 | |
| 3470 | out: |
| 3471 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3472 | return job; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3473 | } |
| 3474 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3475 | void qmp_drive_backup(DriveBackup *arg, Error **errp) |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3476 | { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3477 | |
| 3478 | BlockJob *job; |
| 3479 | job = do_drive_backup(arg, NULL, errp); |
| 3480 | if (job) { |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 3481 | job_start(&job->job); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3482 | } |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3483 | } |
| 3484 | |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3485 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
| 3486 | { |
Alberto Garcia | d5a8ee6 | 2015-04-17 14:52:43 +0300 | [diff] [blame] | 3487 | return bdrv_named_nodes_list(errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3488 | } |
| 3489 | |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 3490 | BlockJob *do_blockdev_backup(BlockdevBackup *backup, JobTxn *txn, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3491 | Error **errp) |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3492 | { |
| 3493 | BlockDriverState *bs; |
| 3494 | BlockDriverState *target_bs; |
| 3495 | Error *local_err = NULL; |
| 3496 | AioContext *aio_context; |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3497 | BlockJob *job = NULL; |
Kevin Wolf | bb02b65 | 2018-04-19 17:54:56 +0200 | [diff] [blame] | 3498 | int job_flags = JOB_DEFAULT; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3499 | |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3500 | if (!backup->has_speed) { |
| 3501 | backup->speed = 0; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3502 | } |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3503 | if (!backup->has_on_source_error) { |
| 3504 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3505 | } |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3506 | if (!backup->has_on_target_error) { |
| 3507 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3508 | } |
| 3509 | if (!backup->has_job_id) { |
| 3510 | backup->job_id = NULL; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3511 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3512 | if (!backup->has_auto_finalize) { |
| 3513 | backup->auto_finalize = true; |
| 3514 | } |
| 3515 | if (!backup->has_auto_dismiss) { |
| 3516 | backup->auto_dismiss = true; |
| 3517 | } |
Pavel Butsykin | 3b7b123 | 2016-07-22 11:17:53 +0300 | [diff] [blame] | 3518 | if (!backup->has_compress) { |
| 3519 | backup->compress = false; |
| 3520 | } |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3521 | |
Vladimir Sementsov-Ogievskiy | 930fe17 | 2018-07-02 15:46:29 -0400 | [diff] [blame] | 3522 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3523 | if (!bs) { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3524 | return NULL; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3525 | } |
| 3526 | |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3527 | aio_context = bdrv_get_aio_context(bs); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3528 | aio_context_acquire(aio_context); |
| 3529 | |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3530 | target_bs = bdrv_lookup_bs(backup->target, backup->target, errp); |
Fam Zheng | 0d97891 | 2016-05-23 10:19:35 +0800 | [diff] [blame] | 3531 | if (!target_bs) { |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3532 | goto out; |
| 3533 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3534 | |
Fam Zheng | efd7556 | 2016-05-23 10:19:36 +0800 | [diff] [blame] | 3535 | if (bdrv_get_aio_context(target_bs) != aio_context) { |
| 3536 | if (!bdrv_has_blk(target_bs)) { |
| 3537 | /* The target BDS is not attached, we can safely move it to another |
| 3538 | * AioContext. */ |
| 3539 | bdrv_set_aio_context(target_bs, aio_context); |
| 3540 | } else { |
| 3541 | error_setg(errp, "Target is attached to a different thread from " |
| 3542 | "source."); |
| 3543 | goto out; |
| 3544 | } |
| 3545 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3546 | if (!backup->auto_finalize) { |
Kevin Wolf | bb02b65 | 2018-04-19 17:54:56 +0200 | [diff] [blame] | 3547 | job_flags |= JOB_MANUAL_FINALIZE; |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3548 | } |
| 3549 | if (!backup->auto_dismiss) { |
Kevin Wolf | bb02b65 | 2018-04-19 17:54:56 +0200 | [diff] [blame] | 3550 | job_flags |= JOB_MANUAL_DISMISS; |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3551 | } |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3552 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
| 3553 | backup->sync, NULL, backup->compress, |
| 3554 | backup->on_source_error, backup->on_target_error, |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3555 | job_flags, NULL, NULL, txn, &local_err); |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3556 | if (local_err != NULL) { |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3557 | error_propagate(errp, local_err); |
| 3558 | } |
| 3559 | out: |
| 3560 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3561 | return job; |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3562 | } |
| 3563 | |
Pavel Butsykin | dc7a4a9 | 2016-07-22 11:17:51 +0300 | [diff] [blame] | 3564 | void qmp_blockdev_backup(BlockdevBackup *arg, Error **errp) |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3565 | { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3566 | BlockJob *job; |
| 3567 | job = do_blockdev_backup(arg, NULL, errp); |
| 3568 | if (job) { |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 3569 | job_start(&job->job); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3570 | } |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3571 | } |
| 3572 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3573 | /* Parameter check and block job starting for drive mirroring. |
| 3574 | * Caller should hold @device and @target's aio context (must be the same). |
| 3575 | **/ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3576 | static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3577 | BlockDriverState *target, |
| 3578 | bool has_replaces, const char *replaces, |
| 3579 | enum MirrorSyncMode sync, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3580 | BlockMirrorBackingMode backing_mode, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3581 | bool has_speed, int64_t speed, |
| 3582 | bool has_granularity, uint32_t granularity, |
| 3583 | bool has_buf_size, int64_t buf_size, |
| 3584 | bool has_on_source_error, |
| 3585 | BlockdevOnError on_source_error, |
| 3586 | bool has_on_target_error, |
| 3587 | BlockdevOnError on_target_error, |
| 3588 | bool has_unmap, bool unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3589 | bool has_filter_node_name, |
| 3590 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3591 | bool has_copy_mode, MirrorCopyMode copy_mode, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3592 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3593 | { |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 3594 | int job_flags = JOB_DEFAULT; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3595 | |
| 3596 | if (!has_speed) { |
| 3597 | speed = 0; |
| 3598 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3599 | if (!has_on_source_error) { |
| 3600 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3601 | } |
| 3602 | if (!has_on_target_error) { |
| 3603 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3604 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3605 | if (!has_granularity) { |
| 3606 | granularity = 0; |
| 3607 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3608 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 3609 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3610 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 3611 | if (!has_unmap) { |
| 3612 | unmap = true; |
| 3613 | } |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3614 | if (!has_filter_node_name) { |
| 3615 | filter_node_name = NULL; |
| 3616 | } |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3617 | if (!has_copy_mode) { |
| 3618 | copy_mode = MIRROR_COPY_MODE_BACKGROUND; |
| 3619 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3620 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3621 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3622 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3623 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3624 | return; |
| 3625 | } |
| 3626 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3627 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3628 | "power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3629 | return; |
| 3630 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3631 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3632 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3633 | return; |
| 3634 | } |
Fam Zheng | e40e502 | 2015-12-24 12:45:04 +0800 | [diff] [blame] | 3635 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
| 3636 | return; |
| 3637 | } |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3638 | |
| 3639 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { |
| 3640 | sync = MIRROR_SYNC_MODE_FULL; |
| 3641 | } |
| 3642 | |
| 3643 | /* pass the node name to replace to mirror start since it's loose coupling |
| 3644 | * and will allow to check whether the node still exist at mirror completion |
| 3645 | */ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3646 | mirror_start(job_id, bs, target, |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 3647 | has_replaces ? replaces : NULL, job_flags, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3648 | speed, granularity, buf_size, sync, backing_mode, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3649 | on_source_error, on_target_error, unmap, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3650 | copy_mode, errp); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3651 | } |
| 3652 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3653 | void qmp_drive_mirror(DriveMirror *arg, Error **errp) |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3654 | { |
| 3655 | BlockDriverState *bs; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3656 | BlockDriverState *source, *target_bs; |
| 3657 | AioContext *aio_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3658 | BlockMirrorBackingMode backing_mode; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3659 | Error *local_err = NULL; |
| 3660 | QDict *options = NULL; |
| 3661 | int flags; |
| 3662 | int64_t size; |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3663 | const char *format = arg->format; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3664 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3665 | bs = qmp_get_root_bs(arg->device, errp); |
| 3666 | if (!bs) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3667 | return; |
| 3668 | } |
| 3669 | |
Paolo Bonzini | cb2af91 | 2018-02-07 17:29:20 +0100 | [diff] [blame] | 3670 | /* Early check to avoid creating target */ |
| 3671 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3672 | return; |
| 3673 | } |
| 3674 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3675 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3676 | aio_context_acquire(aio_context); |
| 3677 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3678 | if (!arg->has_mode) { |
| 3679 | arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3680 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3681 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3682 | if (!arg->has_format) { |
| 3683 | format = (arg->mode == NEW_IMAGE_MODE_EXISTING |
| 3684 | ? NULL : bs->drv->format_name); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3685 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3686 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3687 | flags = bs->open_flags | BDRV_O_RDWR; |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3688 | source = backing_bs(bs); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3689 | if (!source && arg->sync == MIRROR_SYNC_MODE_TOP) { |
| 3690 | arg->sync = MIRROR_SYNC_MODE_FULL; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3691 | } |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3692 | if (arg->sync == MIRROR_SYNC_MODE_NONE) { |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 3693 | source = bs; |
| 3694 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3695 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3696 | size = bdrv_getlength(bs); |
| 3697 | if (size < 0) { |
| 3698 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3699 | goto out; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3700 | } |
| 3701 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3702 | if (arg->has_replaces) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3703 | BlockDriverState *to_replace_bs; |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3704 | AioContext *replace_aio_context; |
| 3705 | int64_t replace_size; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3706 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3707 | if (!arg->has_node_name) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3708 | error_setg(errp, "a node-name must be provided when replacing a" |
| 3709 | " named node of the graph"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3710 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3711 | } |
| 3712 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3713 | to_replace_bs = check_to_replace_node(bs, arg->replaces, &local_err); |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3714 | |
| 3715 | if (!to_replace_bs) { |
| 3716 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3717 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3718 | } |
| 3719 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3720 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
| 3721 | aio_context_acquire(replace_aio_context); |
| 3722 | replace_size = bdrv_getlength(to_replace_bs); |
| 3723 | aio_context_release(replace_aio_context); |
| 3724 | |
| 3725 | if (size != replace_size) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3726 | error_setg(errp, "cannot replace image with a mirror image of " |
| 3727 | "different size"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3728 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3729 | } |
| 3730 | } |
| 3731 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3732 | if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3733 | backing_mode = MIRROR_SOURCE_BACKING_CHAIN; |
| 3734 | } else { |
| 3735 | backing_mode = MIRROR_OPEN_BACKING_CHAIN; |
| 3736 | } |
| 3737 | |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3738 | /* Don't open backing image in create() */ |
| 3739 | flags |= BDRV_O_NO_BACKING; |
| 3740 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3741 | if ((arg->sync == MIRROR_SYNC_MODE_FULL || !source) |
| 3742 | && arg->mode != NEW_IMAGE_MODE_EXISTING) |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 3743 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3744 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3745 | assert(format); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3746 | bdrv_img_create(arg->target, format, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3747 | NULL, NULL, NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3748 | } else { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3749 | switch (arg->mode) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3750 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3751 | break; |
| 3752 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 3753 | /* create new image with backing file */ |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3754 | bdrv_img_create(arg->target, format, |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3755 | source->filename, |
| 3756 | source->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3757 | NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3758 | break; |
| 3759 | default: |
| 3760 | abort(); |
| 3761 | } |
| 3762 | } |
| 3763 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3764 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3765 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3766 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3767 | } |
| 3768 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3769 | options = qdict_new(); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3770 | if (arg->has_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3771 | qdict_put_str(options, "node-name", arg->node_name); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3772 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3773 | if (format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3774 | qdict_put_str(options, "driver", format); |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3775 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3776 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3777 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3778 | * file. |
| 3779 | */ |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3780 | target_bs = bdrv_open(arg->target, NULL, options, flags, errp); |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 3781 | if (!target_bs) { |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3782 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3783 | } |
| 3784 | |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3785 | bdrv_set_aio_context(target_bs, aio_context); |
| 3786 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3787 | blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs, |
| 3788 | arg->has_replaces, arg->replaces, arg->sync, |
| 3789 | backing_mode, arg->has_speed, arg->speed, |
| 3790 | arg->has_granularity, arg->granularity, |
| 3791 | arg->has_buf_size, arg->buf_size, |
| 3792 | arg->has_on_source_error, arg->on_source_error, |
| 3793 | arg->has_on_target_error, arg->on_target_error, |
| 3794 | arg->has_unmap, arg->unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3795 | false, NULL, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3796 | arg->has_copy_mode, arg->copy_mode, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3797 | &local_err); |
Kevin Wolf | e253f4b | 2016-04-12 16:17:41 +0200 | [diff] [blame] | 3798 | bdrv_unref(target_bs); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 3799 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3800 | out: |
| 3801 | aio_context_release(aio_context); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3802 | } |
| 3803 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3804 | void qmp_blockdev_mirror(bool has_job_id, const char *job_id, |
| 3805 | const char *device, const char *target, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3806 | bool has_replaces, const char *replaces, |
| 3807 | MirrorSyncMode sync, |
| 3808 | bool has_speed, int64_t speed, |
| 3809 | bool has_granularity, uint32_t granularity, |
| 3810 | bool has_buf_size, int64_t buf_size, |
| 3811 | bool has_on_source_error, |
| 3812 | BlockdevOnError on_source_error, |
| 3813 | bool has_on_target_error, |
| 3814 | BlockdevOnError on_target_error, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3815 | bool has_filter_node_name, |
| 3816 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3817 | bool has_copy_mode, MirrorCopyMode copy_mode, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3818 | Error **errp) |
| 3819 | { |
| 3820 | BlockDriverState *bs; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3821 | BlockDriverState *target_bs; |
| 3822 | AioContext *aio_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3823 | BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3824 | Error *local_err = NULL; |
| 3825 | |
Kevin Wolf | 07eec65 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3826 | bs = qmp_get_root_bs(device, errp); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3827 | if (!bs) { |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3828 | return; |
| 3829 | } |
| 3830 | |
| 3831 | target_bs = bdrv_lookup_bs(target, target, errp); |
| 3832 | if (!target_bs) { |
| 3833 | return; |
| 3834 | } |
| 3835 | |
| 3836 | aio_context = bdrv_get_aio_context(bs); |
| 3837 | aio_context_acquire(aio_context); |
| 3838 | |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3839 | bdrv_set_aio_context(target_bs, aio_context); |
| 3840 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3841 | blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3842 | has_replaces, replaces, sync, backing_mode, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3843 | has_speed, speed, |
| 3844 | has_granularity, granularity, |
| 3845 | has_buf_size, buf_size, |
| 3846 | has_on_source_error, on_source_error, |
| 3847 | has_on_target_error, on_target_error, |
| 3848 | true, true, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3849 | has_filter_node_name, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3850 | has_copy_mode, copy_mode, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3851 | &local_err); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 3852 | error_propagate(errp, local_err); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3853 | |
| 3854 | aio_context_release(aio_context); |
| 3855 | } |
| 3856 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3857 | /* Get a block job using its ID and acquire its AioContext */ |
| 3858 | static BlockJob *find_block_job(const char *id, AioContext **aio_context, |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3859 | Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3860 | { |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3861 | BlockJob *job; |
| 3862 | |
| 3863 | assert(id != NULL); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3864 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3865 | *aio_context = NULL; |
| 3866 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3867 | job = block_job_get(id); |
| 3868 | |
| 3869 | if (!job) { |
| 3870 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 3871 | "Block job '%s' not found", id); |
| 3872 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3873 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3874 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3875 | *aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3876 | aio_context_acquire(*aio_context); |
| 3877 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3878 | return job; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3879 | } |
| 3880 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3881 | 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] | 3882 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3883 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3884 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3885 | |
| 3886 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3887 | return; |
| 3888 | } |
| 3889 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3890 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3891 | aio_context_release(aio_context); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3892 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3893 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3894 | void qmp_block_job_cancel(const char *device, |
| 3895 | bool has_force, bool force, Error **errp) |
| 3896 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3897 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3898 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3899 | |
| 3900 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3901 | return; |
| 3902 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3903 | |
| 3904 | if (!has_force) { |
| 3905 | force = false; |
| 3906 | } |
| 3907 | |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3908 | if (job_user_paused(&job->job) && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 3909 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 3910 | device); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3911 | goto out; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3912 | } |
| 3913 | |
| 3914 | trace_qmp_block_job_cancel(job); |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 3915 | job_user_cancel(&job->job, force, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3916 | out: |
| 3917 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3918 | } |
| 3919 | |
| 3920 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3921 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3922 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3923 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3924 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3925 | if (!job) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3926 | return; |
| 3927 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3928 | |
| 3929 | trace_qmp_block_job_pause(job); |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3930 | job_user_pause(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3931 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3932 | } |
| 3933 | |
| 3934 | void qmp_block_job_resume(const char *device, Error **errp) |
| 3935 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3936 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3937 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3938 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3939 | if (!job) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 3940 | return; |
| 3941 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3942 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3943 | trace_qmp_block_job_resume(job); |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3944 | job_user_resume(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3945 | aio_context_release(aio_context); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3946 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3947 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3948 | void qmp_block_job_complete(const char *device, Error **errp) |
| 3949 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3950 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3951 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3952 | |
| 3953 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3954 | return; |
| 3955 | } |
| 3956 | |
| 3957 | trace_qmp_block_job_complete(job); |
Kevin Wolf | 3453d97 | 2018-04-23 12:24:16 +0200 | [diff] [blame] | 3958 | job_complete(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3959 | aio_context_release(aio_context); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3960 | } |
| 3961 | |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3962 | void qmp_block_job_finalize(const char *id, Error **errp) |
| 3963 | { |
| 3964 | AioContext *aio_context; |
| 3965 | BlockJob *job = find_block_job(id, &aio_context, errp); |
| 3966 | |
| 3967 | if (!job) { |
| 3968 | return; |
| 3969 | } |
| 3970 | |
| 3971 | trace_qmp_block_job_finalize(job); |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 3972 | job_finalize(&job->job, errp); |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3973 | aio_context_release(aio_context); |
| 3974 | } |
| 3975 | |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3976 | void qmp_block_job_dismiss(const char *id, Error **errp) |
| 3977 | { |
| 3978 | AioContext *aio_context; |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3979 | BlockJob *bjob = find_block_job(id, &aio_context, errp); |
| 3980 | Job *job; |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3981 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3982 | if (!bjob) { |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3983 | return; |
| 3984 | } |
| 3985 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3986 | trace_qmp_block_job_dismiss(bjob); |
| 3987 | job = &bjob->job; |
| 3988 | job_dismiss(&job, errp); |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3989 | aio_context_release(aio_context); |
| 3990 | } |
| 3991 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3992 | void qmp_change_backing_file(const char *device, |
| 3993 | const char *image_node_name, |
| 3994 | const char *backing_file, |
| 3995 | Error **errp) |
| 3996 | { |
| 3997 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3998 | AioContext *aio_context; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3999 | BlockDriverState *image_bs = NULL; |
| 4000 | Error *local_err = NULL; |
| 4001 | bool ro; |
| 4002 | int open_flags; |
| 4003 | int ret; |
| 4004 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 4005 | bs = qmp_get_root_bs(device, errp); |
| 4006 | if (!bs) { |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4007 | return; |
| 4008 | } |
| 4009 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 4010 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4011 | aio_context_acquire(aio_context); |
| 4012 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4013 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 4014 | if (local_err) { |
| 4015 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4016 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4017 | } |
| 4018 | |
| 4019 | if (!image_bs) { |
| 4020 | error_setg(errp, "image file not found"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4021 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4022 | } |
| 4023 | |
| 4024 | if (bdrv_find_base(image_bs) == image_bs) { |
| 4025 | error_setg(errp, "not allowing backing file change on an image " |
| 4026 | "without a backing file"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4027 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4028 | } |
| 4029 | |
| 4030 | /* even though we are not necessarily operating on bs, we need it to |
| 4031 | * determine if block ops are currently prohibited on the chain */ |
| 4032 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4033 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4034 | } |
| 4035 | |
| 4036 | /* final sanity check */ |
| 4037 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 4038 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 4039 | device); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4040 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4041 | } |
| 4042 | |
| 4043 | /* if not r/w, reopen to make r/w */ |
| 4044 | open_flags = image_bs->open_flags; |
| 4045 | ro = bdrv_is_read_only(image_bs); |
| 4046 | |
| 4047 | if (ro) { |
| 4048 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); |
| 4049 | if (local_err) { |
| 4050 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4051 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4052 | } |
| 4053 | } |
| 4054 | |
| 4055 | ret = bdrv_change_backing_file(image_bs, backing_file, |
| 4056 | image_bs->drv ? image_bs->drv->format_name : ""); |
| 4057 | |
| 4058 | if (ret < 0) { |
| 4059 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 4060 | backing_file); |
| 4061 | /* don't exit here, so we can try to restore open flags if |
| 4062 | * appropriate */ |
| 4063 | } |
| 4064 | |
| 4065 | if (ro) { |
| 4066 | bdrv_reopen(image_bs, open_flags, &local_err); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 4067 | error_propagate(errp, local_err); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4068 | } |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4069 | |
| 4070 | out: |
| 4071 | aio_context_release(aio_context); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4072 | } |
| 4073 | |
Kevin Wolf | abb21ac | 2016-02-23 17:33:24 +0100 | [diff] [blame] | 4074 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
| 4075 | { |
| 4076 | QemuOpts *opts; |
| 4077 | QDict *qdict; |
| 4078 | Error *local_err = NULL; |
| 4079 | |
| 4080 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); |
| 4081 | if (!opts) { |
| 4082 | return; |
| 4083 | } |
| 4084 | |
| 4085 | qdict = qemu_opts_to_qdict(opts, NULL); |
| 4086 | |
| 4087 | if (!qdict_get_try_str(qdict, "node-name")) { |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 4088 | qobject_unref(qdict); |
Kevin Wolf | abb21ac | 2016-02-23 17:33:24 +0100 | [diff] [blame] | 4089 | error_report("'node-name' needs to be specified"); |
| 4090 | goto out; |
| 4091 | } |
| 4092 | |
| 4093 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); |
| 4094 | if (!bs) { |
| 4095 | error_report_err(local_err); |
| 4096 | goto out; |
| 4097 | } |
| 4098 | |
| 4099 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 4100 | |
| 4101 | out: |
| 4102 | qemu_opts_del(opts); |
| 4103 | } |
| 4104 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4105 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 4106 | { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 4107 | BlockDriverState *bs; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4108 | QObject *obj; |
Daniel P. Berrange | 7d5e199 | 2016-09-30 15:45:28 +0100 | [diff] [blame] | 4109 | Visitor *v = qobject_output_visitor_new(&obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4110 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4111 | Error *local_err = NULL; |
| 4112 | |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4113 | visit_type_BlockdevOptions(v, NULL, &options, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 4114 | if (local_err) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4115 | error_propagate(errp, local_err); |
| 4116 | goto fail; |
| 4117 | } |
| 4118 | |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4119 | visit_complete(v, &obj); |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 4120 | qdict = qobject_to(QDict, obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4121 | |
| 4122 | qdict_flatten(qdict); |
| 4123 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4124 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 4125 | error_setg(errp, "'node-name' must be specified for the root node"); |
| 4126 | goto fail; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4127 | } |
| 4128 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4129 | bs = bds_tree_init(qdict, errp); |
| 4130 | if (!bs) { |
| 4131 | goto fail; |
| 4132 | } |
| 4133 | |
| 4134 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 4135 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4136 | fail: |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4137 | visit_free(v); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4138 | } |
| 4139 | |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 4140 | void qmp_blockdev_del(const char *node_name, Error **errp) |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4141 | { |
| 4142 | AioContext *aio_context; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4143 | BlockDriverState *bs; |
| 4144 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4145 | bs = bdrv_find_node(node_name); |
| 4146 | if (!bs) { |
| 4147 | error_setg(errp, "Cannot find node %s", node_name); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4148 | return; |
| 4149 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4150 | if (bdrv_has_blk(bs)) { |
| 4151 | error_setg(errp, "Node %s is in use", node_name); |
| 4152 | return; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4153 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4154 | aio_context = bdrv_get_aio_context(bs); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4155 | aio_context_acquire(aio_context); |
| 4156 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4157 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
| 4158 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4159 | } |
| 4160 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4161 | if (!bs->monitor_list.tqe_prev) { |
| 4162 | error_setg(errp, "Node %s is not owned by the monitor", |
| 4163 | bs->node_name); |
| 4164 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4165 | } |
| 4166 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4167 | if (bs->refcnt > 1) { |
| 4168 | error_setg(errp, "Block device %s is in use", |
| 4169 | bdrv_get_device_or_node_name(bs)); |
| 4170 | goto out; |
| 4171 | } |
| 4172 | |
| 4173 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
| 4174 | bdrv_unref(bs); |
| 4175 | |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4176 | out: |
| 4177 | aio_context_release(aio_context); |
| 4178 | } |
| 4179 | |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 4180 | static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, |
| 4181 | const char *child_name) |
| 4182 | { |
| 4183 | BdrvChild *child; |
| 4184 | |
| 4185 | QLIST_FOREACH(child, &parent_bs->children, next) { |
| 4186 | if (strcmp(child->name, child_name) == 0) { |
| 4187 | return child; |
| 4188 | } |
| 4189 | } |
| 4190 | |
| 4191 | return NULL; |
| 4192 | } |
| 4193 | |
| 4194 | void qmp_x_blockdev_change(const char *parent, bool has_child, |
| 4195 | const char *child, bool has_node, |
| 4196 | const char *node, Error **errp) |
| 4197 | { |
| 4198 | BlockDriverState *parent_bs, *new_bs = NULL; |
| 4199 | BdrvChild *p_child; |
| 4200 | |
| 4201 | parent_bs = bdrv_lookup_bs(parent, parent, errp); |
| 4202 | if (!parent_bs) { |
| 4203 | return; |
| 4204 | } |
| 4205 | |
| 4206 | if (has_child == has_node) { |
| 4207 | if (has_child) { |
| 4208 | error_setg(errp, "The parameters child and node are in conflict"); |
| 4209 | } else { |
| 4210 | error_setg(errp, "Either child or node must be specified"); |
| 4211 | } |
| 4212 | return; |
| 4213 | } |
| 4214 | |
| 4215 | if (has_child) { |
| 4216 | p_child = bdrv_find_child(parent_bs, child); |
| 4217 | if (!p_child) { |
| 4218 | error_setg(errp, "Node '%s' does not have child '%s'", |
| 4219 | parent, child); |
| 4220 | return; |
| 4221 | } |
| 4222 | bdrv_del_child(parent_bs, p_child, errp); |
| 4223 | } |
| 4224 | |
| 4225 | if (has_node) { |
| 4226 | new_bs = bdrv_find_node(node); |
| 4227 | if (!new_bs) { |
| 4228 | error_setg(errp, "Node '%s' not found", node); |
| 4229 | return; |
| 4230 | } |
| 4231 | bdrv_add_child(parent_bs, new_bs, errp); |
| 4232 | } |
| 4233 | } |
| 4234 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4235 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 4236 | { |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4237 | BlockJobInfoList *head = NULL, **p_next = &head; |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4238 | BlockJob *job; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4239 | |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4240 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4241 | BlockJobInfoList *elem; |
| 4242 | AioContext *aio_context; |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4243 | |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4244 | if (block_job_is_internal(job)) { |
| 4245 | continue; |
| 4246 | } |
| 4247 | elem = g_new0(BlockJobInfoList, 1); |
| 4248 | aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4249 | aio_context_acquire(aio_context); |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4250 | elem->value = block_job_query(job, errp); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4251 | aio_context_release(aio_context); |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4252 | if (!elem->value) { |
| 4253 | g_free(elem); |
| 4254 | qapi_free_BlockJobInfoList(head); |
| 4255 | return NULL; |
| 4256 | } |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4257 | *p_next = elem; |
| 4258 | p_next = &elem->next; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4259 | } |
| 4260 | |
| 4261 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4262 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4263 | |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4264 | void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 4265 | bool has_force, bool force, Error **errp) |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4266 | { |
| 4267 | AioContext *old_context; |
| 4268 | AioContext *new_context; |
| 4269 | BlockDriverState *bs; |
| 4270 | |
| 4271 | bs = bdrv_find_node(node_name); |
| 4272 | if (!bs) { |
| 4273 | error_setg(errp, "Cannot find node %s", node_name); |
| 4274 | return; |
| 4275 | } |
| 4276 | |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 4277 | /* Protects against accidents. */ |
| 4278 | if (!(has_force && force) && bdrv_has_blk(bs)) { |
| 4279 | error_setg(errp, "Node %s is associated with a BlockBackend and could " |
| 4280 | "be in use (use force=true to override this check)", |
| 4281 | node_name); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4282 | return; |
| 4283 | } |
| 4284 | |
| 4285 | if (iothread->type == QTYPE_QSTRING) { |
| 4286 | IOThread *obj = iothread_by_id(iothread->u.s); |
| 4287 | if (!obj) { |
| 4288 | error_setg(errp, "Cannot find iothread %s", iothread->u.s); |
| 4289 | return; |
| 4290 | } |
| 4291 | |
| 4292 | new_context = iothread_get_aio_context(obj); |
| 4293 | } else { |
| 4294 | new_context = qemu_get_aio_context(); |
| 4295 | } |
| 4296 | |
| 4297 | old_context = bdrv_get_aio_context(bs); |
| 4298 | aio_context_acquire(old_context); |
| 4299 | |
| 4300 | bdrv_set_aio_context(bs, new_context); |
| 4301 | |
| 4302 | aio_context_release(old_context); |
| 4303 | } |
| 4304 | |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4305 | void qmp_x_block_latency_histogram_set( |
| 4306 | const char *device, |
| 4307 | bool has_boundaries, uint64List *boundaries, |
| 4308 | bool has_boundaries_read, uint64List *boundaries_read, |
| 4309 | bool has_boundaries_write, uint64List *boundaries_write, |
| 4310 | bool has_boundaries_flush, uint64List *boundaries_flush, |
| 4311 | Error **errp) |
| 4312 | { |
| 4313 | BlockBackend *blk = blk_by_name(device); |
| 4314 | BlockAcctStats *stats; |
| 4315 | |
| 4316 | if (!blk) { |
| 4317 | error_setg(errp, "Device '%s' not found", device); |
| 4318 | return; |
| 4319 | } |
| 4320 | stats = blk_get_stats(blk); |
| 4321 | |
| 4322 | if (!has_boundaries && !has_boundaries_read && !has_boundaries_write && |
| 4323 | !has_boundaries_flush) |
| 4324 | { |
| 4325 | block_latency_histograms_clear(stats); |
| 4326 | return; |
| 4327 | } |
| 4328 | |
| 4329 | if (has_boundaries || has_boundaries_read) { |
| 4330 | block_latency_histogram_set( |
| 4331 | stats, BLOCK_ACCT_READ, |
| 4332 | has_boundaries_read ? boundaries_read : boundaries); |
| 4333 | } |
| 4334 | |
| 4335 | if (has_boundaries || has_boundaries_write) { |
| 4336 | block_latency_histogram_set( |
| 4337 | stats, BLOCK_ACCT_WRITE, |
| 4338 | has_boundaries_write ? boundaries_write : boundaries); |
| 4339 | } |
| 4340 | |
| 4341 | if (has_boundaries || has_boundaries_flush) { |
| 4342 | block_latency_histogram_set( |
| 4343 | stats, BLOCK_ACCT_FLUSH, |
| 4344 | has_boundaries_flush ? boundaries_flush : boundaries); |
| 4345 | } |
| 4346 | } |
| 4347 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4348 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4349 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4350 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4351 | .desc = { |
| 4352 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4353 | .name = "snapshot", |
| 4354 | .type = QEMU_OPT_BOOL, |
| 4355 | .help = "enable/disable snapshot mode", |
| 4356 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4357 | .name = "aio", |
| 4358 | .type = QEMU_OPT_STRING, |
| 4359 | .help = "host AIO implementation (threads, native)", |
| 4360 | },{ |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 4361 | .name = BDRV_OPT_CACHE_WB, |
| 4362 | .type = QEMU_OPT_BOOL, |
| 4363 | .help = "Enable writeback mode", |
| 4364 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4365 | .name = "format", |
| 4366 | .type = QEMU_OPT_STRING, |
| 4367 | .help = "disk format (raw, qcow2, ...)", |
| 4368 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4369 | .name = "rerror", |
| 4370 | .type = QEMU_OPT_STRING, |
| 4371 | .help = "read error action", |
| 4372 | },{ |
| 4373 | .name = "werror", |
| 4374 | .type = QEMU_OPT_STRING, |
| 4375 | .help = "write error action", |
| 4376 | },{ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 4377 | .name = BDRV_OPT_READ_ONLY, |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4378 | .type = QEMU_OPT_BOOL, |
| 4379 | .help = "open drive file as read-only", |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 4380 | }, |
| 4381 | |
| 4382 | THROTTLE_OPTS, |
| 4383 | |
| 4384 | { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 4385 | .name = "throttling.group", |
| 4386 | .type = QEMU_OPT_STRING, |
| 4387 | .help = "name of the block throttling group", |
| 4388 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4389 | .name = "copy-on-read", |
| 4390 | .type = QEMU_OPT_BOOL, |
| 4391 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 4392 | },{ |
| 4393 | .name = "detect-zeroes", |
| 4394 | .type = QEMU_OPT_STRING, |
| 4395 | .help = "try to optimize zero writes (off, on, unmap)", |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 4396 | },{ |
| 4397 | .name = "stats-account-invalid", |
| 4398 | .type = QEMU_OPT_BOOL, |
| 4399 | .help = "whether to account for invalid I/O operations " |
| 4400 | "in the statistics", |
| 4401 | },{ |
| 4402 | .name = "stats-account-failed", |
| 4403 | .type = QEMU_OPT_BOOL, |
| 4404 | .help = "whether to account for failed I/O operations " |
| 4405 | "in the statistics", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4406 | }, |
| 4407 | { /* end of list */ } |
| 4408 | }, |
| 4409 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4410 | |
| 4411 | QemuOptsList qemu_drive_opts = { |
| 4412 | .name = "drive", |
| 4413 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 4414 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 4415 | /* |
| 4416 | * no elements => accept any params |
| 4417 | * validation will happen later |
| 4418 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4419 | { /* end of list */ } |
| 4420 | }, |
| 4421 | }; |