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 | |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 33 | #include "sysemu/blockdev.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 34 | #include "hw/block/block.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 35 | #include "block/blockjob.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 36 | #include "monitor/monitor.h" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 37 | #include "qapi/qmp/qerror.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 38 | #include "qemu/option.h" |
| 39 | #include "qemu/config-file.h" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 40 | #include "qapi/qmp/types.h" |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 41 | #include "qapi-visit.h" |
| 42 | #include "qapi/qmp-output-visitor.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 43 | #include "sysemu/sysemu.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 44 | #include "block/block_int.h" |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 45 | #include "qmp-commands.h" |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 46 | #include "trace.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 47 | #include "sysemu/arch_init.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 48 | |
Markus Armbruster | c9b62a7 | 2010-06-02 18:55:22 +0200 | [diff] [blame] | 49 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 50 | extern QemuOptsList qemu_common_drive_opts; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 51 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 52 | static const char *const if_name[IF_COUNT] = { |
| 53 | [IF_NONE] = "none", |
| 54 | [IF_IDE] = "ide", |
| 55 | [IF_SCSI] = "scsi", |
| 56 | [IF_FLOPPY] = "floppy", |
| 57 | [IF_PFLASH] = "pflash", |
| 58 | [IF_MTD] = "mtd", |
| 59 | [IF_SD] = "sd", |
| 60 | [IF_VIRTIO] = "virtio", |
| 61 | [IF_XEN] = "xen", |
| 62 | }; |
| 63 | |
| 64 | static const int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 65 | /* |
| 66 | * Do not change these numbers! They govern how drive option |
| 67 | * index maps to unit and bus. That mapping is ABI. |
| 68 | * |
| 69 | * All controllers used to imlement if=T drives need to support |
| 70 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 71 | * Otherwise, some index values map to "impossible" bus, unit |
| 72 | * values. |
| 73 | * |
| 74 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 75 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 76 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 77 | * the drive can't be set up. Regression. |
| 78 | */ |
| 79 | [IF_IDE] = 2, |
| 80 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 81 | }; |
| 82 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 83 | /* |
| 84 | * We automatically delete the drive when a device using it gets |
| 85 | * unplugged. Questionable feature, but we can't just drop it. |
| 86 | * Device models call blockdev_mark_auto_del() to schedule the |
| 87 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 88 | * when deletion is actually safe. |
| 89 | */ |
| 90 | void blockdev_mark_auto_del(BlockDriverState *bs) |
| 91 | { |
| 92 | DriveInfo *dinfo = drive_get_by_blockdev(bs); |
| 93 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 94 | if (dinfo && !dinfo->enable_auto_del) { |
| 95 | return; |
| 96 | } |
| 97 | |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 98 | if (bs->job) { |
| 99 | block_job_cancel(bs->job); |
| 100 | } |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 101 | if (dinfo) { |
| 102 | dinfo->auto_del = 1; |
| 103 | } |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | void blockdev_auto_del(BlockDriverState *bs) |
| 107 | { |
| 108 | DriveInfo *dinfo = drive_get_by_blockdev(bs); |
| 109 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 110 | if (dinfo && dinfo->auto_del) { |
Marcelo Tosatti | 84fb392 | 2011-01-26 12:12:32 -0200 | [diff] [blame] | 111 | drive_put_ref(dinfo); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 112 | } |
| 113 | } |
| 114 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 115 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 116 | { |
| 117 | int max_devs = if_max_devs[type]; |
| 118 | return max_devs ? index / max_devs : 0; |
| 119 | } |
| 120 | |
| 121 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 122 | { |
| 123 | int max_devs = if_max_devs[type]; |
| 124 | return max_devs ? index % max_devs : index; |
| 125 | } |
| 126 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 127 | QemuOpts *drive_def(const char *optstr) |
| 128 | { |
| 129 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); |
| 130 | } |
| 131 | |
| 132 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 133 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 134 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 135 | QemuOpts *opts; |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 136 | char buf[32]; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 137 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 138 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 139 | if (!opts) { |
| 140 | return NULL; |
| 141 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 142 | if (type != IF_DEFAULT) { |
| 143 | qemu_opt_set(opts, "if", if_name[type]); |
| 144 | } |
| 145 | if (index >= 0) { |
| 146 | snprintf(buf, sizeof(buf), "%d", index); |
| 147 | qemu_opt_set(opts, "index", buf); |
| 148 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 149 | if (file) |
| 150 | qemu_opt_set(opts, "file", file); |
| 151 | return opts; |
| 152 | } |
| 153 | |
| 154 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 155 | { |
| 156 | DriveInfo *dinfo; |
| 157 | |
| 158 | /* seek interface, bus and unit */ |
| 159 | |
| 160 | QTAILQ_FOREACH(dinfo, &drives, next) { |
| 161 | if (dinfo->type == type && |
| 162 | dinfo->bus == bus && |
| 163 | dinfo->unit == unit) |
| 164 | return dinfo; |
| 165 | } |
| 166 | |
| 167 | return NULL; |
| 168 | } |
| 169 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 170 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 171 | { |
| 172 | return drive_get(type, |
| 173 | drive_index_to_bus_id(type, index), |
| 174 | drive_index_to_unit_id(type, index)); |
| 175 | } |
| 176 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 177 | int drive_get_max_bus(BlockInterfaceType type) |
| 178 | { |
| 179 | int max_bus; |
| 180 | DriveInfo *dinfo; |
| 181 | |
| 182 | max_bus = -1; |
| 183 | QTAILQ_FOREACH(dinfo, &drives, next) { |
| 184 | if(dinfo->type == type && |
| 185 | dinfo->bus > max_bus) |
| 186 | max_bus = dinfo->bus; |
| 187 | } |
| 188 | return max_bus; |
| 189 | } |
| 190 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 191 | /* Get a block device. This should only be used for single-drive devices |
| 192 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 193 | appropriate bus. */ |
| 194 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 195 | { |
| 196 | static int next_block_unit[IF_COUNT]; |
| 197 | |
| 198 | return drive_get(type, 0, next_block_unit[type]++); |
| 199 | } |
| 200 | |
Markus Armbruster | e4700e5 | 2010-06-24 17:25:32 +0200 | [diff] [blame] | 201 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 202 | { |
| 203 | DriveInfo *dinfo; |
| 204 | |
| 205 | QTAILQ_FOREACH(dinfo, &drives, next) { |
Markus Armbruster | e4700e5 | 2010-06-24 17:25:32 +0200 | [diff] [blame] | 206 | if (dinfo->bdrv == bs) { |
| 207 | return dinfo; |
| 208 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 209 | } |
Markus Armbruster | e4700e5 | 2010-06-24 17:25:32 +0200 | [diff] [blame] | 210 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 211 | } |
| 212 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 213 | static void bdrv_format_print(void *opaque, const char *name) |
| 214 | { |
Markus Armbruster | 807105a | 2011-01-17 19:31:27 +0100 | [diff] [blame] | 215 | error_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 216 | } |
| 217 | |
Marcelo Tosatti | 84fb392 | 2011-01-26 12:12:32 -0200 | [diff] [blame] | 218 | static void drive_uninit(DriveInfo *dinfo) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 219 | { |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 220 | if (dinfo->opts) { |
| 221 | qemu_opts_del(dinfo->opts); |
| 222 | } |
| 223 | |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 224 | bdrv_unref(dinfo->bdrv); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 225 | g_free(dinfo->id); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 226 | QTAILQ_REMOVE(&drives, dinfo, next); |
Kevin Wolf | bb44619 | 2013-03-15 10:35:06 +0100 | [diff] [blame] | 227 | g_free(dinfo->serial); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 228 | g_free(dinfo); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 229 | } |
| 230 | |
Marcelo Tosatti | 84fb392 | 2011-01-26 12:12:32 -0200 | [diff] [blame] | 231 | void drive_put_ref(DriveInfo *dinfo) |
| 232 | { |
| 233 | assert(dinfo->refcount); |
| 234 | if (--dinfo->refcount == 0) { |
| 235 | drive_uninit(dinfo); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | void drive_get_ref(DriveInfo *dinfo) |
| 240 | { |
| 241 | dinfo->refcount++; |
| 242 | } |
| 243 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 244 | typedef struct { |
| 245 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 246 | BlockDriverState *bs; |
| 247 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 248 | |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 249 | static void bdrv_put_ref_bh(void *opaque) |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 250 | { |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 251 | BDRVPutRefBH *s = opaque; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 252 | |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 253 | bdrv_unref(s->bs); |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 254 | qemu_bh_delete(s->bh); |
| 255 | g_free(s); |
| 256 | } |
| 257 | |
| 258 | /* |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 259 | * Release a BDS reference in a BH |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 260 | * |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 261 | * It is not safe to use bdrv_unref() from a callback function when the callers |
| 262 | * still need the BlockDriverState. In such cases we schedule a BH to release |
| 263 | * the reference. |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 264 | */ |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 265 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 266 | { |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 267 | BDRVPutRefBH *s; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 268 | |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 269 | s = g_new(BDRVPutRefBH, 1); |
| 270 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); |
| 271 | s->bs = bs; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 272 | qemu_bh_schedule(s->bh); |
| 273 | } |
| 274 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 275 | 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] | 276 | { |
| 277 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 278 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 279 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 280 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 281 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 282 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 283 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 284 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 285 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 286 | error_setg(errp, "'%s' invalid %s error action", |
| 287 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 288 | return -1; |
| 289 | } |
| 290 | } |
| 291 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 292 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 293 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 294 | if (throttle_conflicting(cfg)) { |
| 295 | error_setg(errp, "bps/iops/max total values and read/write values" |
| 296 | " cannot be used at the same time"); |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 297 | return false; |
| 298 | } |
| 299 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 300 | if (!throttle_is_valid(cfg)) { |
| 301 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); |
Stefan Hajnoczi | 7d81c14 | 2013-02-13 16:53:43 +0100 | [diff] [blame] | 302 | return false; |
| 303 | } |
| 304 | |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 305 | return true; |
| 306 | } |
| 307 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 308 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 309 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 310 | /* Takes the ownership of bs_opts */ |
| 311 | static DriveInfo *blockdev_init(QDict *bs_opts, |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 312 | BlockInterfaceType type, |
| 313 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 314 | { |
| 315 | const char *buf; |
| 316 | const char *file = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 317 | const char *serial; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 318 | int ro = 0; |
| 319 | int bdrv_flags = 0; |
| 320 | int on_read_error, on_write_error; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 321 | DriveInfo *dinfo; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 322 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 323 | int snapshot = 0; |
Stefan Hajnoczi | fb0490f | 2011-11-17 13:40:32 +0000 | [diff] [blame] | 324 | bool copy_on_read; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 325 | int ret; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 326 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 327 | QemuOpts *opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 328 | const char *id; |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 329 | bool has_driver_specific_opts; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 330 | BlockDriver *drv = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 331 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 332 | /* Check common options by copying from bs_opts to opts, all other options |
| 333 | * stay in bs_opts for processing by bdrv_open(). */ |
| 334 | id = qdict_get_try_str(bs_opts, "id"); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 335 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
| 336 | if (error_is_set(&error)) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 337 | error_propagate(errp, error); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 338 | return NULL; |
| 339 | } |
| 340 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 341 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
| 342 | if (error_is_set(&error)) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 343 | error_propagate(errp, error); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 344 | return NULL; |
| 345 | } |
| 346 | |
| 347 | if (id) { |
| 348 | qdict_del(bs_opts, "id"); |
| 349 | } |
| 350 | |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 351 | has_driver_specific_opts = !!qdict_size(bs_opts); |
| 352 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 353 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 354 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 355 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
Stefan Hajnoczi | fb0490f | 2011-11-17 13:40:32 +0000 | [diff] [blame] | 356 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 357 | |
| 358 | file = qemu_opt_get(opts, "file"); |
| 359 | serial = qemu_opt_get(opts, "serial"); |
| 360 | |
Paolo Bonzini | a9384af | 2013-02-08 14:06:12 +0100 | [diff] [blame] | 361 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
| 362 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 363 | error_setg(errp, "invalid discard option"); |
Paolo Bonzini | a9384af | 2013-02-08 14:06:12 +0100 | [diff] [blame] | 364 | return NULL; |
| 365 | } |
| 366 | } |
| 367 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 368 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
| 369 | bdrv_flags |= BDRV_O_CACHE_WB; |
| 370 | } |
| 371 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { |
| 372 | bdrv_flags |= BDRV_O_NOCACHE; |
| 373 | } |
Paolo Bonzini | 1df6fa4 | 2013-09-19 18:48:53 +0200 | [diff] [blame] | 374 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 375 | bdrv_flags |= BDRV_O_NO_FLUSH; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | #ifdef CONFIG_LINUX_AIO |
| 379 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { |
| 380 | if (!strcmp(buf, "native")) { |
| 381 | bdrv_flags |= BDRV_O_NATIVE_AIO; |
| 382 | } else if (!strcmp(buf, "threads")) { |
| 383 | /* this is the default */ |
| 384 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 385 | error_setg(errp, "invalid aio option"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 386 | return NULL; |
| 387 | } |
| 388 | } |
| 389 | #endif |
| 390 | |
| 391 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 392 | if (is_help_option(buf)) { |
| 393 | error_printf("Supported formats:"); |
| 394 | bdrv_iterate_format(bdrv_format_print, NULL); |
| 395 | error_printf("\n"); |
| 396 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 397 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 398 | |
Kevin Wolf | 8f94a6e | 2013-10-10 11:45:55 +0200 | [diff] [blame] | 399 | drv = bdrv_find_format(buf); |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 400 | if (!drv) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 401 | error_setg(errp, "'%s' invalid format", buf); |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 402 | return NULL; |
| 403 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 404 | } |
| 405 | |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 406 | /* disk I/O throttling */ |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 407 | memset(&cfg, 0, sizeof(cfg)); |
| 408 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 409 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 410 | cfg.buckets[THROTTLE_BPS_READ].avg = |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 411 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 412 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 413 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 414 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 415 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 416 | cfg.buckets[THROTTLE_OPS_READ].avg = |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 417 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 418 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 419 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 420 | |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 421 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
| 422 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 423 | cfg.buckets[THROTTLE_BPS_READ].max = |
| 424 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 425 | cfg.buckets[THROTTLE_BPS_WRITE].max = |
| 426 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 427 | cfg.buckets[THROTTLE_OPS_TOTAL].max = |
| 428 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 429 | cfg.buckets[THROTTLE_OPS_READ].max = |
| 430 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 431 | cfg.buckets[THROTTLE_OPS_WRITE].max = |
| 432 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 433 | |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 434 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 435 | |
| 436 | if (!check_throttle_config(&cfg, &error)) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 437 | error_propagate(errp, error); |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 438 | return NULL; |
| 439 | } |
| 440 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 441 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 442 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
| 443 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 444 | error_setg(errp, "werror is not supported by this bus type"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 445 | return NULL; |
| 446 | } |
| 447 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 448 | on_write_error = parse_block_error_action(buf, 0, &error); |
| 449 | if (error_is_set(&error)) { |
| 450 | error_propagate(errp, error); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 451 | return NULL; |
| 452 | } |
| 453 | } |
| 454 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 455 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 456 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | 5dba48a | 2010-10-25 14:52:21 +0200 | [diff] [blame] | 457 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
Markus Armbruster | 807105a | 2011-01-17 19:31:27 +0100 | [diff] [blame] | 458 | error_report("rerror is not supported by this bus type"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 459 | return NULL; |
| 460 | } |
| 461 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 462 | on_read_error = parse_block_error_action(buf, 1, &error); |
| 463 | if (error_is_set(&error)) { |
| 464 | error_propagate(errp, error); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 465 | return NULL; |
| 466 | } |
| 467 | } |
| 468 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 469 | /* init */ |
| 470 | dinfo = g_malloc0(sizeof(*dinfo)); |
| 471 | dinfo->id = g_strdup(qemu_opts_id(opts)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 472 | dinfo->bdrv = bdrv_new(dinfo->id); |
Kevin Shanahan | 80dd1aa | 2012-09-21 08:50:22 +0930 | [diff] [blame] | 473 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
| 474 | dinfo->bdrv->read_only = ro; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 475 | dinfo->type = type; |
Marcelo Tosatti | 84fb392 | 2011-01-26 12:12:32 -0200 | [diff] [blame] | 476 | dinfo->refcount = 1; |
Kevin Wolf | bb44619 | 2013-03-15 10:35:06 +0100 | [diff] [blame] | 477 | if (serial != NULL) { |
| 478 | dinfo->serial = g_strdup(serial); |
| 479 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 480 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
| 481 | |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 482 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
| 483 | |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 484 | /* disk I/O throttling */ |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 485 | if (throttle_enabled(&cfg)) { |
| 486 | bdrv_io_limits_enable(dinfo->bdrv); |
| 487 | bdrv_set_io_limits(dinfo->bdrv, &cfg); |
| 488 | } |
Zhi Yong Wu | 0563e19 | 2011-11-03 16:57:25 +0800 | [diff] [blame] | 489 | |
Markus Armbruster | dd5b0d7 | 2010-05-11 15:36:46 +0200 | [diff] [blame] | 490 | if (!file || !*file) { |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 491 | if (has_driver_specific_opts) { |
Kevin Wolf | c2ad1b0 | 2013-03-18 16:40:51 +0100 | [diff] [blame] | 492 | file = NULL; |
| 493 | } else { |
| 494 | return dinfo; |
| 495 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 496 | } |
| 497 | if (snapshot) { |
| 498 | /* always use cache=unsafe with snapshot */ |
| 499 | bdrv_flags &= ~BDRV_O_CACHE_MASK; |
| 500 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); |
| 501 | } |
| 502 | |
Stefan Hajnoczi | fb0490f | 2011-11-17 13:40:32 +0000 | [diff] [blame] | 503 | if (copy_on_read) { |
| 504 | bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 505 | } |
| 506 | |
Benoît Canet | ed9d420 | 2012-03-23 08:36:50 +0100 | [diff] [blame] | 507 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 508 | bdrv_flags |= BDRV_O_INCOMING; |
| 509 | } |
| 510 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 511 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; |
| 512 | |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 513 | QINCREF(bs_opts); |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 514 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv, &error); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 515 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 516 | if (ret < 0) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 517 | error_setg(errp, "could not open disk image %s: %s", |
| 518 | file ?: dinfo->id, error_get_pretty(error)); |
| 519 | error_free(error); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 520 | goto err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | if (bdrv_key_required(dinfo->bdrv)) |
| 524 | autostart = 0; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 525 | |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 526 | QDECREF(bs_opts); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 527 | qemu_opts_del(opts); |
| 528 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 529 | return dinfo; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 530 | |
| 531 | err: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 532 | qemu_opts_del(opts); |
| 533 | QDECREF(bs_opts); |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 534 | bdrv_unref(dinfo->bdrv); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 535 | g_free(dinfo->id); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 536 | QTAILQ_REMOVE(&drives, dinfo, next); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 537 | g_free(dinfo); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 538 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 539 | } |
| 540 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 541 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
| 542 | { |
| 543 | const char *value; |
| 544 | |
| 545 | value = qemu_opt_get(opts, from); |
| 546 | if (value) { |
| 547 | qemu_opt_set(opts, to, value); |
| 548 | qemu_opt_unset(opts, from); |
| 549 | } |
| 550 | } |
| 551 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 552 | QemuOptsList qemu_legacy_drive_opts = { |
| 553 | .name = "drive", |
| 554 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 555 | .desc = { |
| 556 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 557 | .name = "bus", |
| 558 | .type = QEMU_OPT_NUMBER, |
| 559 | .help = "bus number", |
| 560 | },{ |
| 561 | .name = "unit", |
| 562 | .type = QEMU_OPT_NUMBER, |
| 563 | .help = "unit number (i.e. lun for scsi)", |
| 564 | },{ |
| 565 | .name = "index", |
| 566 | .type = QEMU_OPT_NUMBER, |
| 567 | .help = "index number", |
| 568 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 569 | .name = "media", |
| 570 | .type = QEMU_OPT_STRING, |
| 571 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 572 | },{ |
| 573 | .name = "if", |
| 574 | .type = QEMU_OPT_STRING, |
| 575 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 576 | },{ |
| 577 | .name = "cyls", |
| 578 | .type = QEMU_OPT_NUMBER, |
| 579 | .help = "number of cylinders (ide disk geometry)", |
| 580 | },{ |
| 581 | .name = "heads", |
| 582 | .type = QEMU_OPT_NUMBER, |
| 583 | .help = "number of heads (ide disk geometry)", |
| 584 | },{ |
| 585 | .name = "secs", |
| 586 | .type = QEMU_OPT_NUMBER, |
| 587 | .help = "number of sectors (ide disk geometry)", |
| 588 | },{ |
| 589 | .name = "trans", |
| 590 | .type = QEMU_OPT_STRING, |
| 591 | .help = "chs translation (auto, lba, none)", |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 592 | },{ |
| 593 | .name = "boot", |
| 594 | .type = QEMU_OPT_BOOL, |
| 595 | .help = "(deprecated, ignored)", |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 596 | },{ |
| 597 | .name = "addr", |
| 598 | .type = QEMU_OPT_STRING, |
| 599 | .help = "pci address (virtio only)", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 600 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 601 | |
| 602 | /* Options that are passed on, but have special semantics with -drive */ |
| 603 | { |
| 604 | .name = "read-only", |
| 605 | .type = QEMU_OPT_BOOL, |
| 606 | .help = "open drive file as read-only", |
| 607 | },{ |
| 608 | .name = "copy-on-read", |
| 609 | .type = QEMU_OPT_BOOL, |
| 610 | .help = "copy read data from backing file into image file", |
| 611 | }, |
| 612 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 613 | { /* end of list */ } |
| 614 | }, |
| 615 | }; |
| 616 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 617 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
| 618 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 619 | const char *value; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 620 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 621 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 622 | QemuOpts *legacy_opts; |
| 623 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 624 | BlockInterfaceType type; |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 625 | int cyls, heads, secs, translation; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 626 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 627 | const char *devaddr; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame^] | 628 | bool read_only = false; |
| 629 | bool copy_on_read; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 630 | Error *local_err = NULL; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 631 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 632 | /* Change legacy command line options into QMP ones */ |
| 633 | qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); |
| 634 | qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); |
| 635 | qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); |
| 636 | |
| 637 | qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); |
| 638 | qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); |
| 639 | qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); |
| 640 | |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 641 | qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max"); |
| 642 | qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max"); |
| 643 | qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max"); |
| 644 | |
| 645 | qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max"); |
| 646 | qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max"); |
| 647 | qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max"); |
| 648 | |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 649 | qemu_opt_rename(all_opts, |
| 650 | "iops_size", "throttling.iops-size"); |
| 651 | |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 652 | qemu_opt_rename(all_opts, "readonly", "read-only"); |
| 653 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 654 | value = qemu_opt_get(all_opts, "cache"); |
| 655 | if (value) { |
| 656 | int flags = 0; |
| 657 | |
| 658 | if (bdrv_parse_cache_flags(value, &flags) != 0) { |
| 659 | error_report("invalid cache option"); |
| 660 | return NULL; |
| 661 | } |
| 662 | |
| 663 | /* Specific options take precedence */ |
| 664 | if (!qemu_opt_get(all_opts, "cache.writeback")) { |
| 665 | qemu_opt_set_bool(all_opts, "cache.writeback", |
| 666 | !!(flags & BDRV_O_CACHE_WB)); |
| 667 | } |
| 668 | if (!qemu_opt_get(all_opts, "cache.direct")) { |
| 669 | qemu_opt_set_bool(all_opts, "cache.direct", |
| 670 | !!(flags & BDRV_O_NOCACHE)); |
| 671 | } |
| 672 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { |
| 673 | qemu_opt_set_bool(all_opts, "cache.no-flush", |
| 674 | !!(flags & BDRV_O_NO_FLUSH)); |
| 675 | } |
| 676 | qemu_opt_unset(all_opts, "cache"); |
| 677 | } |
| 678 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 679 | /* Get a QDict for processing the options */ |
| 680 | bs_opts = qdict_new(); |
| 681 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 682 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 683 | legacy_opts = qemu_opts_create_nofail(&qemu_legacy_drive_opts); |
| 684 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
| 685 | if (error_is_set(&local_err)) { |
| 686 | qerror_report_err(local_err); |
| 687 | error_free(local_err); |
| 688 | goto fail; |
| 689 | } |
| 690 | |
Kevin Wolf | 2692929 | 2013-09-09 17:01:03 +0200 | [diff] [blame] | 691 | /* Deprecated option boot=[on|off] */ |
| 692 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { |
| 693 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " |
| 694 | "ignored. Future versions will reject this parameter. Please " |
| 695 | "update your scripts.\n"); |
| 696 | } |
| 697 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 698 | /* Media type */ |
| 699 | value = qemu_opt_get(legacy_opts, "media"); |
| 700 | if (value) { |
| 701 | if (!strcmp(value, "disk")) { |
| 702 | media = MEDIA_DISK; |
| 703 | } else if (!strcmp(value, "cdrom")) { |
| 704 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame^] | 705 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 706 | } else { |
| 707 | error_report("'%s' invalid media", value); |
| 708 | goto fail; |
| 709 | } |
| 710 | } |
| 711 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 712 | /* copy-on-read is disabled with a warning for read-only devices */ |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame^] | 713 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 714 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 715 | |
| 716 | if (read_only && copy_on_read) { |
| 717 | error_report("warning: disabling copy-on-read on read-only drive"); |
| 718 | copy_on_read = false; |
| 719 | } |
| 720 | |
| 721 | qdict_put(bs_opts, "read-only", |
| 722 | qstring_from_str(read_only ? "on" : "off")); |
| 723 | qdict_put(bs_opts, "copy-on-read", |
| 724 | qstring_from_str(copy_on_read ? "on" :"off")); |
| 725 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 726 | /* Controller type */ |
| 727 | value = qemu_opt_get(legacy_opts, "if"); |
| 728 | if (value) { |
| 729 | for (type = 0; |
| 730 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 731 | type++) { |
| 732 | } |
| 733 | if (type == IF_COUNT) { |
| 734 | error_report("unsupported bus type '%s'", value); |
| 735 | goto fail; |
| 736 | } |
| 737 | } else { |
| 738 | type = block_default_type; |
| 739 | } |
| 740 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 741 | /* Geometry */ |
| 742 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); |
| 743 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); |
| 744 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); |
| 745 | |
| 746 | if (cyls || heads || secs) { |
| 747 | if (cyls < 1) { |
| 748 | error_report("invalid physical cyls number"); |
| 749 | goto fail; |
| 750 | } |
| 751 | if (heads < 1) { |
| 752 | error_report("invalid physical heads number"); |
| 753 | goto fail; |
| 754 | } |
| 755 | if (secs < 1) { |
| 756 | error_report("invalid physical secs number"); |
| 757 | goto fail; |
| 758 | } |
| 759 | } |
| 760 | |
| 761 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 762 | value = qemu_opt_get(legacy_opts, "trans"); |
| 763 | if (value != NULL) { |
| 764 | if (!cyls) { |
| 765 | error_report("'%s' trans must be used with cyls, heads and secs", |
| 766 | value); |
| 767 | goto fail; |
| 768 | } |
| 769 | if (!strcmp(value, "none")) { |
| 770 | translation = BIOS_ATA_TRANSLATION_NONE; |
| 771 | } else if (!strcmp(value, "lba")) { |
| 772 | translation = BIOS_ATA_TRANSLATION_LBA; |
| 773 | } else if (!strcmp(value, "auto")) { |
| 774 | translation = BIOS_ATA_TRANSLATION_AUTO; |
| 775 | } else { |
| 776 | error_report("'%s' invalid translation type", value); |
| 777 | goto fail; |
| 778 | } |
| 779 | } |
| 780 | |
| 781 | if (media == MEDIA_CDROM) { |
| 782 | if (cyls || secs || heads) { |
| 783 | error_report("CHS can't be set with media=cdrom"); |
| 784 | goto fail; |
| 785 | } |
| 786 | } |
| 787 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 788 | /* Device address specified by bus/unit or index. |
| 789 | * If none was specified, try to find the first free one. */ |
| 790 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 791 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 792 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 793 | |
| 794 | max_devs = if_max_devs[type]; |
| 795 | |
| 796 | if (index != -1) { |
| 797 | if (bus_id != 0 || unit_id != -1) { |
| 798 | error_report("index cannot be used with bus and unit"); |
| 799 | goto fail; |
| 800 | } |
| 801 | bus_id = drive_index_to_bus_id(type, index); |
| 802 | unit_id = drive_index_to_unit_id(type, index); |
| 803 | } |
| 804 | |
| 805 | if (unit_id == -1) { |
| 806 | unit_id = 0; |
| 807 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 808 | unit_id++; |
| 809 | if (max_devs && unit_id >= max_devs) { |
| 810 | unit_id -= max_devs; |
| 811 | bus_id++; |
| 812 | } |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | if (max_devs && unit_id >= max_devs) { |
| 817 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); |
| 818 | goto fail; |
| 819 | } |
| 820 | |
| 821 | if (drive_get(type, bus_id, unit_id) != NULL) { |
| 822 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
| 823 | bus_id, unit_id, index); |
| 824 | goto fail; |
| 825 | } |
| 826 | |
| 827 | /* no id supplied -> create one */ |
| 828 | if (qemu_opts_id(all_opts) == NULL) { |
| 829 | char *new_id; |
| 830 | const char *mediastr = ""; |
| 831 | if (type == IF_IDE || type == IF_SCSI) { |
| 832 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 833 | } |
| 834 | if (max_devs) { |
| 835 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 836 | mediastr, unit_id); |
| 837 | } else { |
| 838 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 839 | mediastr, unit_id); |
| 840 | } |
| 841 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); |
| 842 | g_free(new_id); |
| 843 | } |
| 844 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 845 | /* Add virtio block device */ |
| 846 | devaddr = qemu_opt_get(legacy_opts, "addr"); |
| 847 | if (devaddr && type != IF_VIRTIO) { |
| 848 | error_report("addr is not supported by this bus type"); |
| 849 | goto fail; |
| 850 | } |
| 851 | |
| 852 | if (type == IF_VIRTIO) { |
| 853 | QemuOpts *devopts; |
| 854 | devopts = qemu_opts_create_nofail(qemu_find_opts("device")); |
| 855 | if (arch_type == QEMU_ARCH_S390X) { |
| 856 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); |
| 857 | } else { |
| 858 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); |
| 859 | } |
| 860 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id")); |
| 861 | if (devaddr) { |
| 862 | qemu_opt_set(devopts, "addr", devaddr); |
| 863 | } |
| 864 | } |
| 865 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 866 | /* Actual block device init: Functionality shared with blockdev-add */ |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 867 | dinfo = blockdev_init(bs_opts, type, &local_err); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 868 | if (dinfo == NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 869 | if (error_is_set(&local_err)) { |
| 870 | qerror_report_err(local_err); |
| 871 | error_free(local_err); |
| 872 | } |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 873 | goto fail; |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 874 | } else { |
| 875 | assert(!error_is_set(&local_err)); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 876 | } |
| 877 | |
| 878 | /* Set legacy DriveInfo fields */ |
| 879 | dinfo->enable_auto_del = true; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 880 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 881 | |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 882 | dinfo->cyls = cyls; |
| 883 | dinfo->heads = heads; |
| 884 | dinfo->secs = secs; |
| 885 | dinfo->trans = translation; |
| 886 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 887 | dinfo->bus = bus_id; |
| 888 | dinfo->unit = unit_id; |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 889 | dinfo->devaddr = devaddr; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 890 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 891 | switch(type) { |
| 892 | case IF_IDE: |
| 893 | case IF_SCSI: |
| 894 | case IF_XEN: |
| 895 | case IF_NONE: |
| 896 | dinfo->media_cd = media == MEDIA_CDROM; |
| 897 | break; |
| 898 | default: |
| 899 | break; |
| 900 | } |
| 901 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 902 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 903 | qemu_opts_del(legacy_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 904 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 905 | } |
| 906 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 907 | void do_commit(Monitor *mon, const QDict *qdict) |
| 908 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 909 | const char *device = qdict_get_str(qdict, "device"); |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 910 | BlockDriverState *bs; |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 911 | int ret; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 912 | |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 913 | if (!strcmp(device, "all")) { |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 914 | ret = bdrv_commit_all(); |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 915 | } else { |
| 916 | bs = bdrv_find(device); |
Markus Armbruster | ac59eb9 | 2010-06-02 18:55:19 +0200 | [diff] [blame] | 917 | if (!bs) { |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 918 | monitor_printf(mon, "Device '%s' not found\n", device); |
Markus Armbruster | ac59eb9 | 2010-06-02 18:55:19 +0200 | [diff] [blame] | 919 | return; |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 920 | } |
Stefan Hajnoczi | 2d3735d | 2012-01-18 14:40:41 +0000 | [diff] [blame] | 921 | ret = bdrv_commit(bs); |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 922 | } |
| 923 | if (ret < 0) { |
| 924 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, |
| 925 | strerror(-ret)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 926 | } |
| 927 | } |
| 928 | |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 929 | static void blockdev_do_action(int kind, void *data, Error **errp) |
| 930 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 931 | TransactionAction action; |
| 932 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 933 | |
| 934 | action.kind = kind; |
| 935 | action.data = data; |
| 936 | list.value = &action; |
| 937 | list.next = NULL; |
| 938 | qmp_transaction(&list, errp); |
| 939 | } |
| 940 | |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 941 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
| 942 | bool has_format, const char *format, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 943 | bool has_mode, enum NewImageMode mode, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 944 | Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 945 | { |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 946 | BlockdevSnapshot snapshot = { |
| 947 | .device = (char *) device, |
| 948 | .snapshot_file = (char *) snapshot_file, |
| 949 | .has_format = has_format, |
| 950 | .format = (char *) format, |
| 951 | .has_mode = has_mode, |
| 952 | .mode = mode, |
| 953 | }; |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 954 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
| 955 | &snapshot, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 956 | } |
| 957 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 958 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 959 | const char *name, |
| 960 | Error **errp) |
| 961 | { |
| 962 | BlockdevSnapshotInternal snapshot = { |
| 963 | .device = (char *) device, |
| 964 | .name = (char *) name |
| 965 | }; |
| 966 | |
| 967 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
| 968 | &snapshot, errp); |
| 969 | } |
| 970 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 971 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 972 | bool has_id, |
| 973 | const char *id, |
| 974 | bool has_name, |
| 975 | const char *name, |
| 976 | Error **errp) |
| 977 | { |
| 978 | BlockDriverState *bs = bdrv_find(device); |
| 979 | QEMUSnapshotInfo sn; |
| 980 | Error *local_err = NULL; |
| 981 | SnapshotInfo *info = NULL; |
| 982 | int ret; |
| 983 | |
| 984 | if (!bs) { |
| 985 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 986 | return NULL; |
| 987 | } |
| 988 | |
| 989 | if (!has_id) { |
| 990 | id = NULL; |
| 991 | } |
| 992 | |
| 993 | if (!has_name) { |
| 994 | name = NULL; |
| 995 | } |
| 996 | |
| 997 | if (!id && !name) { |
| 998 | error_setg(errp, "Name or id must be provided"); |
| 999 | return NULL; |
| 1000 | } |
| 1001 | |
| 1002 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
| 1003 | if (error_is_set(&local_err)) { |
| 1004 | error_propagate(errp, local_err); |
| 1005 | return NULL; |
| 1006 | } |
| 1007 | if (!ret) { |
| 1008 | error_setg(errp, |
| 1009 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1010 | "device '%s'", |
| 1011 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
| 1012 | return NULL; |
| 1013 | } |
| 1014 | |
| 1015 | bdrv_snapshot_delete(bs, id, name, &local_err); |
| 1016 | if (error_is_set(&local_err)) { |
| 1017 | error_propagate(errp, local_err); |
| 1018 | return NULL; |
| 1019 | } |
| 1020 | |
| 1021 | info = g_malloc0(sizeof(SnapshotInfo)); |
| 1022 | info->id = g_strdup(sn.id_str); |
| 1023 | info->name = g_strdup(sn.name); |
| 1024 | info->date_nsec = sn.date_nsec; |
| 1025 | info->date_sec = sn.date_sec; |
| 1026 | info->vm_state_size = sn.vm_state_size; |
| 1027 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1028 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
| 1029 | |
| 1030 | return info; |
| 1031 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1032 | |
| 1033 | /* New and old BlockDriverState structs for group snapshots */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1034 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1035 | typedef struct BlkTransactionState BlkTransactionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1036 | |
| 1037 | /* Only prepare() may fail. In a single transaction, only one of commit() or |
| 1038 | abort() will be called, clean() will always be called if it present. */ |
| 1039 | typedef struct BdrvActionOps { |
| 1040 | /* Size of state struct, in bytes. */ |
| 1041 | size_t instance_size; |
| 1042 | /* Prepare the work, must NOT be NULL. */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1043 | void (*prepare)(BlkTransactionState *common, Error **errp); |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 1044 | /* Commit the changes, can be NULL. */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1045 | void (*commit)(BlkTransactionState *common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1046 | /* Abort the changes on fail, can be NULL. */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1047 | void (*abort)(BlkTransactionState *common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1048 | /* Clean up resource in the end, can be NULL. */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1049 | void (*clean)(BlkTransactionState *common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1050 | } BdrvActionOps; |
| 1051 | |
| 1052 | /* |
| 1053 | * This structure must be arranged as first member in child type, assuming |
| 1054 | * that compiler will also arrange it to the same address with parent instance. |
| 1055 | * Later it will be used in free(). |
| 1056 | */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1057 | struct BlkTransactionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1058 | TransactionAction *action; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1059 | const BdrvActionOps *ops; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1060 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1061 | }; |
| 1062 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1063 | /* internal snapshot private data */ |
| 1064 | typedef struct InternalSnapshotState { |
| 1065 | BlkTransactionState common; |
| 1066 | BlockDriverState *bs; |
| 1067 | QEMUSnapshotInfo sn; |
| 1068 | } InternalSnapshotState; |
| 1069 | |
| 1070 | static void internal_snapshot_prepare(BlkTransactionState *common, |
| 1071 | Error **errp) |
| 1072 | { |
| 1073 | const char *device; |
| 1074 | const char *name; |
| 1075 | BlockDriverState *bs; |
| 1076 | QEMUSnapshotInfo old_sn, *sn; |
| 1077 | bool ret; |
| 1078 | qemu_timeval tv; |
| 1079 | BlockdevSnapshotInternal *internal; |
| 1080 | InternalSnapshotState *state; |
| 1081 | int ret1; |
| 1082 | |
| 1083 | g_assert(common->action->kind == |
| 1084 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
| 1085 | internal = common->action->blockdev_snapshot_internal_sync; |
| 1086 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1087 | |
| 1088 | /* 1. parse input */ |
| 1089 | device = internal->device; |
| 1090 | name = internal->name; |
| 1091 | |
| 1092 | /* 2. check for validation */ |
| 1093 | bs = bdrv_find(device); |
| 1094 | if (!bs) { |
| 1095 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1096 | return; |
| 1097 | } |
| 1098 | |
| 1099 | if (!bdrv_is_inserted(bs)) { |
| 1100 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
| 1101 | return; |
| 1102 | } |
| 1103 | |
| 1104 | if (bdrv_is_read_only(bs)) { |
| 1105 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); |
| 1106 | return; |
| 1107 | } |
| 1108 | |
| 1109 | if (!bdrv_can_snapshot(bs)) { |
| 1110 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, |
| 1111 | bs->drv->format_name, device, "internal snapshot"); |
| 1112 | return; |
| 1113 | } |
| 1114 | |
| 1115 | if (!strlen(name)) { |
| 1116 | error_setg(errp, "Name is empty"); |
| 1117 | return; |
| 1118 | } |
| 1119 | |
| 1120 | /* check whether a snapshot with name exist */ |
| 1121 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, errp); |
| 1122 | if (error_is_set(errp)) { |
| 1123 | return; |
| 1124 | } else if (ret) { |
| 1125 | error_setg(errp, |
| 1126 | "Snapshot with name '%s' already exists on device '%s'", |
| 1127 | name, device); |
| 1128 | return; |
| 1129 | } |
| 1130 | |
| 1131 | /* 3. take the snapshot */ |
| 1132 | sn = &state->sn; |
| 1133 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1134 | qemu_gettimeofday(&tv); |
| 1135 | sn->date_sec = tv.tv_sec; |
| 1136 | sn->date_nsec = tv.tv_usec * 1000; |
| 1137 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1138 | |
| 1139 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1140 | if (ret1 < 0) { |
| 1141 | error_setg_errno(errp, -ret1, |
| 1142 | "Failed to create snapshot '%s' on device '%s'", |
| 1143 | name, device); |
| 1144 | return; |
| 1145 | } |
| 1146 | |
| 1147 | /* 4. succeed, mark a snapshot is created */ |
| 1148 | state->bs = bs; |
| 1149 | } |
| 1150 | |
| 1151 | static void internal_snapshot_abort(BlkTransactionState *common) |
| 1152 | { |
| 1153 | InternalSnapshotState *state = |
| 1154 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1155 | BlockDriverState *bs = state->bs; |
| 1156 | QEMUSnapshotInfo *sn = &state->sn; |
| 1157 | Error *local_error = NULL; |
| 1158 | |
| 1159 | if (!bs) { |
| 1160 | return; |
| 1161 | } |
| 1162 | |
| 1163 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { |
| 1164 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " |
| 1165 | "device '%s' in abort: %s", |
| 1166 | sn->id_str, |
| 1167 | sn->name, |
| 1168 | bdrv_get_device_name(bs), |
| 1169 | error_get_pretty(local_error)); |
| 1170 | error_free(local_error); |
| 1171 | } |
| 1172 | } |
| 1173 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1174 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1175 | typedef struct ExternalSnapshotState { |
| 1176 | BlkTransactionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1177 | BlockDriverState *old_bs; |
| 1178 | BlockDriverState *new_bs; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1179 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1180 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1181 | static void external_snapshot_prepare(BlkTransactionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1182 | Error **errp) |
| 1183 | { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1184 | BlockDriver *drv; |
| 1185 | int flags, ret; |
| 1186 | Error *local_err = NULL; |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1187 | const char *device; |
| 1188 | const char *new_image_file; |
| 1189 | const char *format = "qcow2"; |
| 1190 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1191 | ExternalSnapshotState *state = |
| 1192 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1193 | TransactionAction *action = common->action; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1194 | |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1195 | /* get parameters */ |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1196 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1197 | |
| 1198 | device = action->blockdev_snapshot_sync->device; |
| 1199 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; |
| 1200 | if (action->blockdev_snapshot_sync->has_format) { |
| 1201 | format = action->blockdev_snapshot_sync->format; |
| 1202 | } |
| 1203 | if (action->blockdev_snapshot_sync->has_mode) { |
| 1204 | mode = action->blockdev_snapshot_sync->mode; |
| 1205 | } |
| 1206 | |
| 1207 | /* start processing */ |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1208 | drv = bdrv_find_format(format); |
| 1209 | if (!drv) { |
| 1210 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
| 1211 | return; |
| 1212 | } |
| 1213 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1214 | state->old_bs = bdrv_find(device); |
| 1215 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1216 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1217 | return; |
| 1218 | } |
| 1219 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1220 | if (!bdrv_is_inserted(state->old_bs)) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1221 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
| 1222 | return; |
| 1223 | } |
| 1224 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1225 | if (bdrv_in_use(state->old_bs)) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1226 | error_set(errp, QERR_DEVICE_IN_USE, device); |
| 1227 | return; |
| 1228 | } |
| 1229 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1230 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1231 | if (bdrv_flush(state->old_bs)) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1232 | error_set(errp, QERR_IO_ERROR); |
| 1233 | return; |
| 1234 | } |
| 1235 | } |
| 1236 | |
Benoît Canet | f6186f4 | 2013-10-02 14:33:48 +0200 | [diff] [blame] | 1237 | if (bdrv_check_ext_snapshot(state->old_bs) != EXT_SNAPSHOT_ALLOWED) { |
| 1238 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); |
| 1239 | return; |
| 1240 | } |
| 1241 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1242 | flags = state->old_bs->open_flags; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1243 | |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1244 | /* create new image w/backing file */ |
| 1245 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
| 1246 | bdrv_img_create(new_image_file, format, |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1247 | state->old_bs->filename, |
| 1248 | state->old_bs->drv->format_name, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1249 | NULL, -1, flags, &local_err, false); |
| 1250 | if (error_is_set(&local_err)) { |
| 1251 | error_propagate(errp, local_err); |
| 1252 | return; |
| 1253 | } |
| 1254 | } |
| 1255 | |
| 1256 | /* We will manually add the backing_hd field to the bs later */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1257 | state->new_bs = bdrv_new(""); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1258 | /* TODO Inherit bs->options or only take explicit options with an |
| 1259 | * extended QMP command? */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1260 | ret = bdrv_open(state->new_bs, new_image_file, NULL, |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 1261 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1262 | if (ret != 0) { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 1263 | error_propagate(errp, local_err); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1264 | } |
| 1265 | } |
| 1266 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1267 | static void external_snapshot_commit(BlkTransactionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1268 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1269 | ExternalSnapshotState *state = |
| 1270 | DO_UPCAST(ExternalSnapshotState, common, common); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1271 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1272 | /* This removes our old bs and adds the new bs */ |
| 1273 | bdrv_append(state->new_bs, state->old_bs); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1274 | /* We don't need (or want) to use the transactional |
| 1275 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1276 | * don't want to abort all of them if one of them fails the reopen */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1277 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1278 | NULL); |
| 1279 | } |
| 1280 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1281 | static void external_snapshot_abort(BlkTransactionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1282 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1283 | ExternalSnapshotState *state = |
| 1284 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1285 | if (state->new_bs) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 1286 | bdrv_unref(state->new_bs); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1287 | } |
| 1288 | } |
| 1289 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1290 | typedef struct DriveBackupState { |
| 1291 | BlkTransactionState common; |
| 1292 | BlockDriverState *bs; |
| 1293 | BlockJob *job; |
| 1294 | } DriveBackupState; |
| 1295 | |
| 1296 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) |
| 1297 | { |
| 1298 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1299 | DriveBackup *backup; |
| 1300 | Error *local_err = NULL; |
| 1301 | |
| 1302 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
| 1303 | backup = common->action->drive_backup; |
| 1304 | |
| 1305 | qmp_drive_backup(backup->device, backup->target, |
| 1306 | backup->has_format, backup->format, |
Stefan Hajnoczi | b53169e | 2013-06-26 14:11:57 +0200 | [diff] [blame] | 1307 | backup->sync, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1308 | backup->has_mode, backup->mode, |
| 1309 | backup->has_speed, backup->speed, |
| 1310 | backup->has_on_source_error, backup->on_source_error, |
| 1311 | backup->has_on_target_error, backup->on_target_error, |
| 1312 | &local_err); |
| 1313 | if (error_is_set(&local_err)) { |
| 1314 | error_propagate(errp, local_err); |
| 1315 | state->bs = NULL; |
| 1316 | state->job = NULL; |
| 1317 | return; |
| 1318 | } |
| 1319 | |
| 1320 | state->bs = bdrv_find(backup->device); |
| 1321 | state->job = state->bs->job; |
| 1322 | } |
| 1323 | |
| 1324 | static void drive_backup_abort(BlkTransactionState *common) |
| 1325 | { |
| 1326 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1327 | BlockDriverState *bs = state->bs; |
| 1328 | |
| 1329 | /* Only cancel if it's the job we started */ |
| 1330 | if (bs && bs->job && bs->job == state->job) { |
| 1331 | block_job_cancel_sync(bs->job); |
| 1332 | } |
| 1333 | } |
| 1334 | |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 1335 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
| 1336 | { |
| 1337 | error_setg(errp, "Transaction aborted using Abort action"); |
| 1338 | } |
| 1339 | |
| 1340 | static void abort_commit(BlkTransactionState *common) |
| 1341 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 1342 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 1343 | } |
| 1344 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1345 | static const BdrvActionOps actions[] = { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1346 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1347 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1348 | .prepare = external_snapshot_prepare, |
| 1349 | .commit = external_snapshot_commit, |
| 1350 | .abort = external_snapshot_abort, |
| 1351 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1352 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 1353 | .instance_size = sizeof(DriveBackupState), |
| 1354 | .prepare = drive_backup_prepare, |
| 1355 | .abort = drive_backup_abort, |
| 1356 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 1357 | [TRANSACTION_ACTION_KIND_ABORT] = { |
| 1358 | .instance_size = sizeof(BlkTransactionState), |
| 1359 | .prepare = abort_prepare, |
| 1360 | .commit = abort_commit, |
| 1361 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1362 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 1363 | .instance_size = sizeof(InternalSnapshotState), |
| 1364 | .prepare = internal_snapshot_prepare, |
| 1365 | .abort = internal_snapshot_abort, |
| 1366 | }, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1367 | }; |
| 1368 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1369 | /* |
| 1370 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail |
| 1371 | * then we do not pivot any of the devices in the group, and abandon the |
| 1372 | * snapshots |
| 1373 | */ |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1374 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1375 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1376 | TransactionActionList *dev_entry = dev_list; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1377 | BlkTransactionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 1378 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1379 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1380 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1381 | QSIMPLEQ_INIT(&snap_bdrv_states); |
| 1382 | |
| 1383 | /* drain all i/o before any snapshots */ |
| 1384 | bdrv_drain_all(); |
| 1385 | |
| 1386 | /* We don't do anything in this loop that commits us to the snapshot */ |
| 1387 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1388 | TransactionAction *dev_info = NULL; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1389 | const BdrvActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 1390 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1391 | dev_info = dev_entry->value; |
| 1392 | dev_entry = dev_entry->next; |
| 1393 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1394 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
| 1395 | |
| 1396 | ops = &actions[dev_info->kind]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 1397 | assert(ops->instance_size > 0); |
| 1398 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1399 | state = g_malloc0(ops->instance_size); |
| 1400 | state->ops = ops; |
| 1401 | state->action = dev_info; |
| 1402 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1403 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1404 | state->ops->prepare(state, &local_err); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1405 | if (error_is_set(&local_err)) { |
| 1406 | error_propagate(errp, local_err); |
| 1407 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 1408 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1409 | } |
| 1410 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1411 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 1412 | if (state->ops->commit) { |
| 1413 | state->ops->commit(state); |
| 1414 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1415 | } |
| 1416 | |
| 1417 | /* success */ |
| 1418 | goto exit; |
| 1419 | |
| 1420 | delete_and_fail: |
| 1421 | /* |
| 1422 | * failure, and it is all-or-none; abandon each new bs, and keep using |
| 1423 | * the original bs for all images |
| 1424 | */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1425 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
| 1426 | if (state->ops->abort) { |
| 1427 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1428 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1429 | } |
| 1430 | exit: |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1431 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
| 1432 | if (state->ops->clean) { |
| 1433 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1434 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1435 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1436 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1437 | } |
| 1438 | |
| 1439 | |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1440 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1441 | { |
Stefan Hajnoczi | 2d3735d | 2012-01-18 14:40:41 +0000 | [diff] [blame] | 1442 | if (bdrv_in_use(bs)) { |
| 1443 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); |
| 1444 | return; |
| 1445 | } |
Markus Armbruster | 2c6942f | 2011-09-06 18:58:51 +0200 | [diff] [blame] | 1446 | if (!bdrv_dev_has_removable_media(bs)) { |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1447 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
| 1448 | return; |
Markus Armbruster | ea8f942 | 2011-07-20 18:23:35 +0200 | [diff] [blame] | 1449 | } |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1450 | |
Paolo Bonzini | 025ccaa | 2011-11-07 17:50:13 +0100 | [diff] [blame] | 1451 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
| 1452 | bdrv_dev_eject_request(bs, force); |
| 1453 | if (!force) { |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1454 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
| 1455 | return; |
Paolo Bonzini | 025ccaa | 2011-11-07 17:50:13 +0100 | [diff] [blame] | 1456 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1457 | } |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1458 | |
Eduardo Habkost | 3b5276b | 2010-06-01 19:12:19 -0300 | [diff] [blame] | 1459 | bdrv_close(bs); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1460 | } |
| 1461 | |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 1462 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1463 | { |
| 1464 | BlockDriverState *bs; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1465 | |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 1466 | bs = bdrv_find(device); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1467 | if (!bs) { |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 1468 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1469 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1470 | } |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1471 | |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 1472 | eject_device(bs, force, errp); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1473 | } |
| 1474 | |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 1475 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1476 | { |
| 1477 | BlockDriverState *bs; |
| 1478 | int err; |
| 1479 | |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 1480 | bs = bdrv_find(device); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1481 | if (!bs) { |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 1482 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1483 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1484 | } |
| 1485 | |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 1486 | err = bdrv_set_key(bs, password); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1487 | if (err == -EINVAL) { |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 1488 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
| 1489 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1490 | } else if (err < 0) { |
Luiz Capitulino | a4dea8a | 2011-11-23 13:28:21 -0200 | [diff] [blame] | 1491 | error_set(errp, QERR_INVALID_PASSWORD); |
| 1492 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1493 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1494 | } |
| 1495 | |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1496 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
| 1497 | int bdrv_flags, BlockDriver *drv, |
| 1498 | const char *password, Error **errp) |
| 1499 | { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 1500 | Error *local_err = NULL; |
Luiz Capitulino | 0eef407 | 2013-06-07 14:33:48 -0400 | [diff] [blame] | 1501 | int ret; |
| 1502 | |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 1503 | ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv, &local_err); |
Luiz Capitulino | 0eef407 | 2013-06-07 14:33:48 -0400 | [diff] [blame] | 1504 | if (ret < 0) { |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 1505 | error_propagate(errp, local_err); |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1506 | return; |
| 1507 | } |
| 1508 | |
| 1509 | if (bdrv_key_required(bs)) { |
| 1510 | if (password) { |
| 1511 | if (bdrv_set_key(bs, password) < 0) { |
| 1512 | error_set(errp, QERR_INVALID_PASSWORD); |
| 1513 | } |
| 1514 | } else { |
| 1515 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), |
| 1516 | bdrv_get_encrypted_filename(bs)); |
| 1517 | } |
| 1518 | } else if (password) { |
| 1519 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
| 1520 | } |
| 1521 | } |
| 1522 | |
| 1523 | void qmp_change_blockdev(const char *device, const char *filename, |
| 1524 | bool has_format, const char *format, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1525 | { |
| 1526 | BlockDriverState *bs; |
| 1527 | BlockDriver *drv = NULL; |
| 1528 | int bdrv_flags; |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1529 | Error *err = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1530 | |
| 1531 | bs = bdrv_find(device); |
| 1532 | if (!bs) { |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1533 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1534 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1535 | } |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1536 | |
| 1537 | if (format) { |
Fam Zheng | b64ec4e | 2013-05-29 19:35:40 +0800 | [diff] [blame] | 1538 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1539 | if (!drv) { |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1540 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
| 1541 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1542 | } |
| 1543 | } |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1544 | |
Luiz Capitulino | 92d4855 | 2011-12-07 15:47:23 -0200 | [diff] [blame] | 1545 | eject_device(bs, 0, &err); |
| 1546 | if (error_is_set(&err)) { |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1547 | error_propagate(errp, err); |
| 1548 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1549 | } |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1550 | |
Markus Armbruster | 528f766 | 2010-06-25 15:26:48 +0200 | [diff] [blame] | 1551 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
Blue Swirl | 199630b | 2010-07-25 20:49:34 +0000 | [diff] [blame] | 1552 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
Luiz Capitulino | 333a96e | 2011-12-08 11:13:50 -0200 | [diff] [blame] | 1553 | |
| 1554 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1555 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 1556 | |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1557 | /* throttling disk I/O limits */ |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 1558 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 1559 | int64_t bps_wr, |
| 1560 | int64_t iops, |
| 1561 | int64_t iops_rd, |
| 1562 | int64_t iops_wr, |
| 1563 | bool has_bps_max, |
| 1564 | int64_t bps_max, |
| 1565 | bool has_bps_rd_max, |
| 1566 | int64_t bps_rd_max, |
| 1567 | bool has_bps_wr_max, |
| 1568 | int64_t bps_wr_max, |
| 1569 | bool has_iops_max, |
| 1570 | int64_t iops_max, |
| 1571 | bool has_iops_rd_max, |
| 1572 | int64_t iops_rd_max, |
| 1573 | bool has_iops_wr_max, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 1574 | int64_t iops_wr_max, |
| 1575 | bool has_iops_size, |
| 1576 | int64_t iops_size, Error **errp) |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1577 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 1578 | ThrottleConfig cfg; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1579 | BlockDriverState *bs; |
| 1580 | |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 1581 | bs = bdrv_find(device); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1582 | if (!bs) { |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 1583 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1584 | return; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1585 | } |
| 1586 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 1587 | memset(&cfg, 0, sizeof(cfg)); |
| 1588 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; |
| 1589 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; |
| 1590 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1591 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 1592 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; |
| 1593 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; |
| 1594 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; |
| 1595 | |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 1596 | if (has_bps_max) { |
| 1597 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; |
| 1598 | } |
| 1599 | if (has_bps_rd_max) { |
| 1600 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; |
| 1601 | } |
| 1602 | if (has_bps_wr_max) { |
| 1603 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; |
| 1604 | } |
| 1605 | if (has_iops_max) { |
| 1606 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; |
| 1607 | } |
| 1608 | if (has_iops_rd_max) { |
| 1609 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; |
| 1610 | } |
| 1611 | if (has_iops_wr_max) { |
| 1612 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; |
| 1613 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 1614 | |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 1615 | if (has_iops_size) { |
| 1616 | cfg.op_size = iops_size; |
| 1617 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 1618 | |
| 1619 | if (!check_throttle_config(&cfg, errp)) { |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 1620 | return; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1621 | } |
| 1622 | |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 1623 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1624 | bdrv_io_limits_enable(bs); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 1625 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1626 | bdrv_io_limits_disable(bs); |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 1627 | } |
| 1628 | |
| 1629 | if (bs->io_limits_enabled) { |
| 1630 | bdrv_set_io_limits(bs, &cfg); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1631 | } |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 1632 | } |
| 1633 | |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 1634 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
| 1635 | { |
| 1636 | const char *id = qdict_get_str(qdict, "id"); |
| 1637 | BlockDriverState *bs; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 1638 | |
| 1639 | bs = bdrv_find(id); |
| 1640 | if (!bs) { |
| 1641 | qerror_report(QERR_DEVICE_NOT_FOUND, id); |
| 1642 | return -1; |
| 1643 | } |
Marcelo Tosatti | 8591675 | 2011-01-26 12:12:35 -0200 | [diff] [blame] | 1644 | if (bdrv_in_use(bs)) { |
| 1645 | qerror_report(QERR_DEVICE_IN_USE, id); |
| 1646 | return -1; |
| 1647 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 1648 | |
| 1649 | /* quiesce block driver; prevent further io */ |
Stefan Hajnoczi | 922453b | 2011-11-30 12:23:43 +0000 | [diff] [blame] | 1650 | bdrv_drain_all(); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 1651 | bdrv_flush(bs); |
| 1652 | bdrv_close(bs); |
| 1653 | |
Markus Armbruster | fa879d6 | 2011-08-03 15:07:40 +0200 | [diff] [blame] | 1654 | /* if we have a device attached to this BlockDriverState |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 1655 | * then we need to make the drive anonymous until the device |
| 1656 | * can be removed. If this is a drive with no device backing |
| 1657 | * then we can just get rid of the block driver state right here. |
| 1658 | */ |
Markus Armbruster | fa879d6 | 2011-08-03 15:07:40 +0200 | [diff] [blame] | 1659 | if (bdrv_get_attached_dev(bs)) { |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 1660 | bdrv_make_anon(bs); |
Stefan Hajnoczi | 293c51a | 2013-06-05 10:33:14 +0200 | [diff] [blame] | 1661 | |
| 1662 | /* Further I/O must not pause the guest */ |
| 1663 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, |
| 1664 | BLOCKDEV_ON_ERROR_REPORT); |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 1665 | } else { |
| 1666 | drive_uninit(drive_get_by_blockdev(bs)); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 1667 | } |
| 1668 | |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 1669 | return 0; |
| 1670 | } |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 1671 | |
Luiz Capitulino | 5e7caac | 2011-11-25 14:57:10 -0200 | [diff] [blame] | 1672 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 1673 | { |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 1674 | BlockDriverState *bs; |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 1675 | int ret; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 1676 | |
| 1677 | bs = bdrv_find(device); |
| 1678 | if (!bs) { |
Luiz Capitulino | 5e7caac | 2011-11-25 14:57:10 -0200 | [diff] [blame] | 1679 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1680 | return; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 1681 | } |
| 1682 | |
| 1683 | if (size < 0) { |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 1684 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Luiz Capitulino | 5e7caac | 2011-11-25 14:57:10 -0200 | [diff] [blame] | 1685 | return; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 1686 | } |
| 1687 | |
Peter Lieven | 92b7a08 | 2013-03-11 11:04:24 +0100 | [diff] [blame] | 1688 | /* complete all in-flight operations before resizing the device */ |
| 1689 | bdrv_drain_all(); |
| 1690 | |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 1691 | ret = bdrv_truncate(bs, size); |
| 1692 | switch (ret) { |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 1693 | case 0: |
| 1694 | break; |
| 1695 | case -ENOMEDIUM: |
| 1696 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
| 1697 | break; |
| 1698 | case -ENOTSUP: |
| 1699 | error_set(errp, QERR_UNSUPPORTED); |
| 1700 | break; |
| 1701 | case -EACCES: |
| 1702 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); |
| 1703 | break; |
| 1704 | case -EBUSY: |
| 1705 | error_set(errp, QERR_DEVICE_IN_USE, device); |
| 1706 | break; |
| 1707 | default: |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 1708 | error_setg_errno(errp, -ret, "Could not resize"); |
Stefan Hajnoczi | 939a1cc | 2012-01-04 22:23:34 +0000 | [diff] [blame] | 1709 | break; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 1710 | } |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 1711 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1712 | |
Jeff Cody | 9abf2db | 2012-09-27 13:29:14 -0400 | [diff] [blame] | 1713 | static void block_job_cb(void *opaque, int ret) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1714 | { |
| 1715 | BlockDriverState *bs = opaque; |
| 1716 | QObject *obj; |
| 1717 | |
Jeff Cody | 9abf2db | 2012-09-27 13:29:14 -0400 | [diff] [blame] | 1718 | trace_block_job_cb(bs, bs->job, ret); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1719 | |
| 1720 | assert(bs->job); |
| 1721 | obj = qobject_from_block_job(bs->job); |
| 1722 | if (ret < 0) { |
| 1723 | QDict *dict = qobject_to_qdict(obj); |
| 1724 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); |
| 1725 | } |
| 1726 | |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 1727 | if (block_job_is_cancelled(bs->job)) { |
| 1728 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); |
| 1729 | } else { |
| 1730 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); |
| 1731 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1732 | qobject_decref(obj); |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 1733 | |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 1734 | bdrv_put_ref_bh_schedule(bs); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1735 | } |
| 1736 | |
| 1737 | void qmp_block_stream(const char *device, bool has_base, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 1738 | const char *base, bool has_speed, int64_t speed, |
| 1739 | bool has_on_error, BlockdevOnError on_error, |
| 1740 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1741 | { |
| 1742 | BlockDriverState *bs; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 1743 | BlockDriverState *base_bs = NULL; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 1744 | Error *local_err = NULL; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1745 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 1746 | if (!has_on_error) { |
| 1747 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 1748 | } |
| 1749 | |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1750 | bs = bdrv_find(device); |
| 1751 | if (!bs) { |
| 1752 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1753 | return; |
| 1754 | } |
| 1755 | |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1756 | if (base) { |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 1757 | base_bs = bdrv_find_backing_image(bs, base); |
| 1758 | if (base_bs == NULL) { |
| 1759 | error_set(errp, QERR_BASE_NOT_FOUND, base); |
| 1760 | return; |
| 1761 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1762 | } |
| 1763 | |
Stefan Hajnoczi | c83c66c | 2012-04-25 16:51:03 +0100 | [diff] [blame] | 1764 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 1765 | on_error, block_job_cb, bs, &local_err); |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 1766 | if (error_is_set(&local_err)) { |
| 1767 | error_propagate(errp, local_err); |
| 1768 | return; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 1769 | } |
| 1770 | |
| 1771 | trace_qmp_block_stream(bs, bs->job); |
| 1772 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 1773 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 1774 | void qmp_block_commit(const char *device, |
| 1775 | bool has_base, const char *base, const char *top, |
| 1776 | bool has_speed, int64_t speed, |
| 1777 | Error **errp) |
| 1778 | { |
| 1779 | BlockDriverState *bs; |
| 1780 | BlockDriverState *base_bs, *top_bs; |
| 1781 | Error *local_err = NULL; |
| 1782 | /* This will be part of the QMP command, if/when the |
| 1783 | * BlockdevOnError change for blkmirror makes it in |
| 1784 | */ |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 1785 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 1786 | |
| 1787 | /* drain all i/o before commits */ |
| 1788 | bdrv_drain_all(); |
| 1789 | |
| 1790 | bs = bdrv_find(device); |
| 1791 | if (!bs) { |
| 1792 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1793 | return; |
| 1794 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 1795 | |
| 1796 | /* default top_bs is the active layer */ |
| 1797 | top_bs = bs; |
| 1798 | |
| 1799 | if (top) { |
| 1800 | if (strcmp(bs->filename, top) != 0) { |
| 1801 | top_bs = bdrv_find_backing_image(bs, top); |
| 1802 | } |
| 1803 | } |
| 1804 | |
| 1805 | if (top_bs == NULL) { |
| 1806 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
| 1807 | return; |
| 1808 | } |
| 1809 | |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 1810 | if (has_base && base) { |
| 1811 | base_bs = bdrv_find_backing_image(top_bs, base); |
| 1812 | } else { |
| 1813 | base_bs = bdrv_find_base(top_bs); |
| 1814 | } |
| 1815 | |
| 1816 | if (base_bs == NULL) { |
| 1817 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
| 1818 | return; |
| 1819 | } |
| 1820 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 1821 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
| 1822 | &local_err); |
| 1823 | if (local_err != NULL) { |
| 1824 | error_propagate(errp, local_err); |
| 1825 | return; |
| 1826 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 1827 | } |
| 1828 | |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1829 | void qmp_drive_backup(const char *device, const char *target, |
| 1830 | bool has_format, const char *format, |
Stefan Hajnoczi | b53169e | 2013-06-26 14:11:57 +0200 | [diff] [blame] | 1831 | enum MirrorSyncMode sync, |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1832 | bool has_mode, enum NewImageMode mode, |
| 1833 | bool has_speed, int64_t speed, |
| 1834 | bool has_on_source_error, BlockdevOnError on_source_error, |
| 1835 | bool has_on_target_error, BlockdevOnError on_target_error, |
| 1836 | Error **errp) |
| 1837 | { |
| 1838 | BlockDriverState *bs; |
| 1839 | BlockDriverState *target_bs; |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 1840 | BlockDriverState *source = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1841 | BlockDriver *drv = NULL; |
| 1842 | Error *local_err = NULL; |
| 1843 | int flags; |
| 1844 | int64_t size; |
| 1845 | int ret; |
| 1846 | |
| 1847 | if (!has_speed) { |
| 1848 | speed = 0; |
| 1849 | } |
| 1850 | if (!has_on_source_error) { |
| 1851 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 1852 | } |
| 1853 | if (!has_on_target_error) { |
| 1854 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 1855 | } |
| 1856 | if (!has_mode) { |
| 1857 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1858 | } |
| 1859 | |
| 1860 | bs = bdrv_find(device); |
| 1861 | if (!bs) { |
| 1862 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1863 | return; |
| 1864 | } |
| 1865 | |
| 1866 | if (!bdrv_is_inserted(bs)) { |
| 1867 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
| 1868 | return; |
| 1869 | } |
| 1870 | |
| 1871 | if (!has_format) { |
| 1872 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; |
| 1873 | } |
| 1874 | if (format) { |
| 1875 | drv = bdrv_find_format(format); |
| 1876 | if (!drv) { |
| 1877 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
| 1878 | return; |
| 1879 | } |
| 1880 | } |
| 1881 | |
| 1882 | if (bdrv_in_use(bs)) { |
| 1883 | error_set(errp, QERR_DEVICE_IN_USE, device); |
| 1884 | return; |
| 1885 | } |
| 1886 | |
| 1887 | flags = bs->open_flags | BDRV_O_RDWR; |
| 1888 | |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 1889 | /* See if we have a backing HD we can use to create our new image |
| 1890 | * on top of. */ |
| 1891 | if (sync == MIRROR_SYNC_MODE_TOP) { |
| 1892 | source = bs->backing_hd; |
| 1893 | if (!source) { |
| 1894 | sync = MIRROR_SYNC_MODE_FULL; |
| 1895 | } |
| 1896 | } |
| 1897 | if (sync == MIRROR_SYNC_MODE_NONE) { |
| 1898 | source = bs; |
| 1899 | } |
| 1900 | |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1901 | size = bdrv_getlength(bs); |
| 1902 | if (size < 0) { |
| 1903 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
| 1904 | return; |
| 1905 | } |
| 1906 | |
| 1907 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
| 1908 | assert(format && drv); |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 1909 | if (source) { |
| 1910 | bdrv_img_create(target, format, source->filename, |
| 1911 | source->drv->format_name, NULL, |
| 1912 | size, flags, &local_err, false); |
| 1913 | } else { |
| 1914 | bdrv_img_create(target, format, NULL, NULL, NULL, |
| 1915 | size, flags, &local_err, false); |
| 1916 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1917 | } |
| 1918 | |
| 1919 | if (error_is_set(&local_err)) { |
| 1920 | error_propagate(errp, local_err); |
| 1921 | return; |
| 1922 | } |
| 1923 | |
| 1924 | target_bs = bdrv_new(""); |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 1925 | ret = bdrv_open(target_bs, target, NULL, flags, drv, &local_err); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1926 | if (ret < 0) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 1927 | bdrv_unref(target_bs); |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 1928 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1929 | return; |
| 1930 | } |
| 1931 | |
Ian Main | fc5d3f8 | 2013-07-26 11:39:04 -0700 | [diff] [blame] | 1932 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1933 | block_job_cb, bs, &local_err); |
| 1934 | if (local_err != NULL) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 1935 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1936 | error_propagate(errp, local_err); |
| 1937 | return; |
| 1938 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 1939 | } |
| 1940 | |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 1941 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
| 1942 | |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 1943 | void qmp_drive_mirror(const char *device, const char *target, |
| 1944 | bool has_format, const char *format, |
| 1945 | enum MirrorSyncMode sync, |
| 1946 | bool has_mode, enum NewImageMode mode, |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 1947 | bool has_speed, int64_t speed, |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 1948 | bool has_granularity, uint32_t granularity, |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 1949 | bool has_buf_size, int64_t buf_size, |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 1950 | bool has_on_source_error, BlockdevOnError on_source_error, |
| 1951 | bool has_on_target_error, BlockdevOnError on_target_error, |
| 1952 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 1953 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 1954 | BlockDriverState *bs; |
| 1955 | BlockDriverState *source, *target_bs; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 1956 | BlockDriver *drv = NULL; |
| 1957 | Error *local_err = NULL; |
| 1958 | int flags; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 1959 | int64_t size; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 1960 | int ret; |
| 1961 | |
| 1962 | if (!has_speed) { |
| 1963 | speed = 0; |
| 1964 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 1965 | if (!has_on_source_error) { |
| 1966 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 1967 | } |
| 1968 | if (!has_on_target_error) { |
| 1969 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 1970 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 1971 | if (!has_mode) { |
| 1972 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1973 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 1974 | if (!has_granularity) { |
| 1975 | granularity = 0; |
| 1976 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 1977 | if (!has_buf_size) { |
| 1978 | buf_size = DEFAULT_MIRROR_BUF_SIZE; |
| 1979 | } |
| 1980 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 1981 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
| 1982 | error_set(errp, QERR_INVALID_PARAMETER, device); |
| 1983 | return; |
| 1984 | } |
| 1985 | if (granularity & (granularity - 1)) { |
| 1986 | error_set(errp, QERR_INVALID_PARAMETER, device); |
| 1987 | return; |
| 1988 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 1989 | |
| 1990 | bs = bdrv_find(device); |
| 1991 | if (!bs) { |
| 1992 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
| 1993 | return; |
| 1994 | } |
| 1995 | |
| 1996 | if (!bdrv_is_inserted(bs)) { |
| 1997 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
| 1998 | return; |
| 1999 | } |
| 2000 | |
| 2001 | if (!has_format) { |
| 2002 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; |
| 2003 | } |
| 2004 | if (format) { |
| 2005 | drv = bdrv_find_format(format); |
| 2006 | if (!drv) { |
| 2007 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
| 2008 | return; |
| 2009 | } |
| 2010 | } |
| 2011 | |
| 2012 | if (bdrv_in_use(bs)) { |
| 2013 | error_set(errp, QERR_DEVICE_IN_USE, device); |
| 2014 | return; |
| 2015 | } |
| 2016 | |
| 2017 | flags = bs->open_flags | BDRV_O_RDWR; |
| 2018 | source = bs->backing_hd; |
| 2019 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { |
| 2020 | sync = MIRROR_SYNC_MODE_FULL; |
| 2021 | } |
| 2022 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 2023 | size = bdrv_getlength(bs); |
| 2024 | if (size < 0) { |
| 2025 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
| 2026 | return; |
| 2027 | } |
| 2028 | |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2029 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
| 2030 | /* create new image w/o backing file */ |
| 2031 | assert(format && drv); |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 2032 | bdrv_img_create(target, format, |
Miroslav Rezanina | f382d43 | 2013-02-13 09:09:40 +0100 | [diff] [blame] | 2033 | NULL, NULL, NULL, size, flags, &local_err, false); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2034 | } else { |
| 2035 | switch (mode) { |
| 2036 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2037 | break; |
| 2038 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 2039 | /* create new image with backing file */ |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 2040 | bdrv_img_create(target, format, |
| 2041 | source->filename, |
| 2042 | source->drv->format_name, |
Miroslav Rezanina | f382d43 | 2013-02-13 09:09:40 +0100 | [diff] [blame] | 2043 | NULL, size, flags, &local_err, false); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2044 | break; |
| 2045 | default: |
| 2046 | abort(); |
| 2047 | } |
| 2048 | } |
| 2049 | |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 2050 | if (error_is_set(&local_err)) { |
| 2051 | error_propagate(errp, local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2052 | return; |
| 2053 | } |
| 2054 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 2055 | /* Mirroring takes care of copy-on-write using the source's backing |
| 2056 | * file. |
| 2057 | */ |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2058 | target_bs = bdrv_new(""); |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 2059 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv, |
| 2060 | &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2061 | if (ret < 0) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 2062 | bdrv_unref(target_bs); |
Max Reitz | 34b5d2c | 2013-09-05 14:45:29 +0200 | [diff] [blame] | 2063 | error_propagate(errp, local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2064 | return; |
| 2065 | } |
| 2066 | |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2067 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2068 | on_source_error, on_target_error, |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 2069 | block_job_cb, bs, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2070 | if (local_err != NULL) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 2071 | bdrv_unref(target_bs); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2072 | error_propagate(errp, local_err); |
| 2073 | return; |
| 2074 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2075 | } |
| 2076 | |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 2077 | static BlockJob *find_block_job(const char *device) |
| 2078 | { |
| 2079 | BlockDriverState *bs; |
| 2080 | |
| 2081 | bs = bdrv_find(device); |
| 2082 | if (!bs || !bs->job) { |
| 2083 | return NULL; |
| 2084 | } |
| 2085 | return bs->job; |
| 2086 | } |
| 2087 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 2088 | 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] | 2089 | { |
| 2090 | BlockJob *job = find_block_job(device); |
| 2091 | |
| 2092 | if (!job) { |
Paolo Bonzini | 7ef1507 | 2012-09-28 17:22:44 +0200 | [diff] [blame] | 2093 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 2094 | return; |
| 2095 | } |
| 2096 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 2097 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 2098 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2099 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 2100 | void qmp_block_job_cancel(const char *device, |
| 2101 | bool has_force, bool force, Error **errp) |
| 2102 | { |
| 2103 | BlockJob *job = find_block_job(device); |
| 2104 | |
| 2105 | if (!has_force) { |
| 2106 | force = false; |
| 2107 | } |
| 2108 | |
| 2109 | if (!job) { |
| 2110 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
| 2111 | return; |
| 2112 | } |
| 2113 | if (job->paused && !force) { |
| 2114 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
| 2115 | return; |
| 2116 | } |
| 2117 | |
| 2118 | trace_qmp_block_job_cancel(job); |
| 2119 | block_job_cancel(job); |
| 2120 | } |
| 2121 | |
| 2122 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2123 | { |
| 2124 | BlockJob *job = find_block_job(device); |
| 2125 | |
| 2126 | if (!job) { |
Paolo Bonzini | 7ef1507 | 2012-09-28 17:22:44 +0200 | [diff] [blame] | 2127 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2128 | return; |
| 2129 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 2130 | |
| 2131 | trace_qmp_block_job_pause(job); |
| 2132 | block_job_pause(job); |
| 2133 | } |
| 2134 | |
| 2135 | void qmp_block_job_resume(const char *device, Error **errp) |
| 2136 | { |
| 2137 | BlockJob *job = find_block_job(device); |
| 2138 | |
| 2139 | if (!job) { |
| 2140 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 2141 | return; |
| 2142 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2143 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 2144 | trace_qmp_block_job_resume(job); |
| 2145 | block_job_resume(job); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 2146 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 2147 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 2148 | void qmp_block_job_complete(const char *device, Error **errp) |
| 2149 | { |
| 2150 | BlockJob *job = find_block_job(device); |
| 2151 | |
| 2152 | if (!job) { |
| 2153 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
| 2154 | return; |
| 2155 | } |
| 2156 | |
| 2157 | trace_qmp_block_job_complete(job); |
| 2158 | block_job_complete(job, errp); |
| 2159 | } |
| 2160 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 2161 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 2162 | { |
| 2163 | QmpOutputVisitor *ov = qmp_output_visitor_new(); |
| 2164 | QObject *obj; |
| 2165 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 2166 | Error *local_err = NULL; |
| 2167 | |
| 2168 | /* Require an ID in the top level */ |
| 2169 | if (!options->has_id) { |
| 2170 | error_setg(errp, "Block device needs an ID"); |
| 2171 | goto fail; |
| 2172 | } |
| 2173 | |
| 2174 | /* TODO Sort it out in raw-posix and drive_init: Reject aio=native with |
| 2175 | * cache.direct=false instead of silently switching to aio=threads, except |
| 2176 | * if called from drive_init. |
| 2177 | * |
| 2178 | * For now, simply forbidding the combination for all drivers will do. */ |
| 2179 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { |
| 2180 | bool direct = options->cache->has_direct && options->cache->direct; |
| 2181 | if (!options->has_cache && !direct) { |
| 2182 | error_setg(errp, "aio=native requires cache.direct=true"); |
| 2183 | goto fail; |
| 2184 | } |
| 2185 | } |
| 2186 | |
| 2187 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), |
| 2188 | &options, NULL, &local_err); |
| 2189 | if (error_is_set(&local_err)) { |
| 2190 | error_propagate(errp, local_err); |
| 2191 | goto fail; |
| 2192 | } |
| 2193 | |
| 2194 | obj = qmp_output_get_qobject(ov); |
| 2195 | qdict = qobject_to_qdict(obj); |
| 2196 | |
| 2197 | qdict_flatten(qdict); |
| 2198 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 2199 | blockdev_init(qdict, IF_NONE, &local_err); |
| 2200 | if (error_is_set(&local_err)) { |
| 2201 | error_propagate(errp, local_err); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 2202 | goto fail; |
| 2203 | } |
| 2204 | |
| 2205 | fail: |
| 2206 | qmp_output_visitor_cleanup(ov); |
| 2207 | } |
| 2208 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 2209 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
| 2210 | { |
| 2211 | BlockJobInfoList **prev = opaque; |
| 2212 | BlockJob *job = bs->job; |
| 2213 | |
| 2214 | if (job) { |
Paolo Bonzini | 30e628b | 2012-09-28 17:22:48 +0200 | [diff] [blame] | 2215 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
| 2216 | elem->value = block_job_query(bs->job); |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 2217 | (*prev)->next = elem; |
| 2218 | *prev = elem; |
| 2219 | } |
| 2220 | } |
| 2221 | |
| 2222 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 2223 | { |
| 2224 | /* Dummy is a fake list element for holding the head pointer */ |
| 2225 | BlockJobInfoList dummy = {}; |
| 2226 | BlockJobInfoList *prev = &dummy; |
| 2227 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); |
| 2228 | return dummy.next; |
| 2229 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2230 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 2231 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2232 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 2233 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2234 | .desc = { |
| 2235 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2236 | .name = "snapshot", |
| 2237 | .type = QEMU_OPT_BOOL, |
| 2238 | .help = "enable/disable snapshot mode", |
| 2239 | },{ |
| 2240 | .name = "file", |
| 2241 | .type = QEMU_OPT_STRING, |
| 2242 | .help = "disk image", |
| 2243 | },{ |
Paolo Bonzini | a9384af | 2013-02-08 14:06:12 +0100 | [diff] [blame] | 2244 | .name = "discard", |
| 2245 | .type = QEMU_OPT_STRING, |
| 2246 | .help = "discard operation (ignore/off, unmap/on)", |
| 2247 | },{ |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 2248 | .name = "cache.writeback", |
| 2249 | .type = QEMU_OPT_BOOL, |
| 2250 | .help = "enables writeback mode for any caches", |
| 2251 | },{ |
| 2252 | .name = "cache.direct", |
| 2253 | .type = QEMU_OPT_BOOL, |
| 2254 | .help = "enables use of O_DIRECT (bypass the host page cache)", |
| 2255 | },{ |
| 2256 | .name = "cache.no-flush", |
| 2257 | .type = QEMU_OPT_BOOL, |
| 2258 | .help = "ignore any flush requests for the device", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2259 | },{ |
| 2260 | .name = "aio", |
| 2261 | .type = QEMU_OPT_STRING, |
| 2262 | .help = "host AIO implementation (threads, native)", |
| 2263 | },{ |
| 2264 | .name = "format", |
| 2265 | .type = QEMU_OPT_STRING, |
| 2266 | .help = "disk format (raw, qcow2, ...)", |
| 2267 | },{ |
| 2268 | .name = "serial", |
| 2269 | .type = QEMU_OPT_STRING, |
| 2270 | .help = "disk serial number", |
| 2271 | },{ |
| 2272 | .name = "rerror", |
| 2273 | .type = QEMU_OPT_STRING, |
| 2274 | .help = "read error action", |
| 2275 | },{ |
| 2276 | .name = "werror", |
| 2277 | .type = QEMU_OPT_STRING, |
| 2278 | .help = "write error action", |
| 2279 | },{ |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 2280 | .name = "read-only", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2281 | .type = QEMU_OPT_BOOL, |
| 2282 | .help = "open drive file as read-only", |
| 2283 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 2284 | .name = "throttling.iops-total", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2285 | .type = QEMU_OPT_NUMBER, |
| 2286 | .help = "limit total I/O operations per second", |
| 2287 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 2288 | .name = "throttling.iops-read", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2289 | .type = QEMU_OPT_NUMBER, |
| 2290 | .help = "limit read operations per second", |
| 2291 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 2292 | .name = "throttling.iops-write", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2293 | .type = QEMU_OPT_NUMBER, |
| 2294 | .help = "limit write operations per second", |
| 2295 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 2296 | .name = "throttling.bps-total", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2297 | .type = QEMU_OPT_NUMBER, |
| 2298 | .help = "limit total bytes per second", |
| 2299 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 2300 | .name = "throttling.bps-read", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2301 | .type = QEMU_OPT_NUMBER, |
| 2302 | .help = "limit read bytes per second", |
| 2303 | },{ |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 2304 | .name = "throttling.bps-write", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2305 | .type = QEMU_OPT_NUMBER, |
| 2306 | .help = "limit write bytes per second", |
| 2307 | },{ |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2308 | .name = "throttling.iops-total-max", |
| 2309 | .type = QEMU_OPT_NUMBER, |
| 2310 | .help = "I/O operations burst", |
| 2311 | },{ |
| 2312 | .name = "throttling.iops-read-max", |
| 2313 | .type = QEMU_OPT_NUMBER, |
| 2314 | .help = "I/O operations read burst", |
| 2315 | },{ |
| 2316 | .name = "throttling.iops-write-max", |
| 2317 | .type = QEMU_OPT_NUMBER, |
| 2318 | .help = "I/O operations write burst", |
| 2319 | },{ |
| 2320 | .name = "throttling.bps-total-max", |
| 2321 | .type = QEMU_OPT_NUMBER, |
| 2322 | .help = "total bytes burst", |
| 2323 | },{ |
| 2324 | .name = "throttling.bps-read-max", |
| 2325 | .type = QEMU_OPT_NUMBER, |
| 2326 | .help = "total bytes read burst", |
| 2327 | },{ |
| 2328 | .name = "throttling.bps-write-max", |
| 2329 | .type = QEMU_OPT_NUMBER, |
| 2330 | .help = "total bytes write burst", |
| 2331 | },{ |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2332 | .name = "throttling.iops-size", |
| 2333 | .type = QEMU_OPT_NUMBER, |
| 2334 | .help = "when limiting by iops max size of an I/O in bytes", |
| 2335 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2336 | .name = "copy-on-read", |
| 2337 | .type = QEMU_OPT_BOOL, |
| 2338 | .help = "copy read data from backing file into image file", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 2339 | }, |
| 2340 | { /* end of list */ } |
| 2341 | }, |
| 2342 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 2343 | |
| 2344 | QemuOptsList qemu_drive_opts = { |
| 2345 | .name = "drive", |
| 2346 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 2347 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 2348 | /* |
| 2349 | * no elements => accept any params |
| 2350 | * validation will happen later |
| 2351 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 2352 | { /* end of list */ } |
| 2353 | }, |
| 2354 | }; |