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666daa68 MA |
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. | |
3618a094 MA |
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. | |
666daa68 MA |
31 | */ |
32 | ||
9c17d615 | 33 | #include "sysemu/blockdev.h" |
0d09e41a | 34 | #include "hw/block/block.h" |
737e150e | 35 | #include "block/blockjob.h" |
83c9089e | 36 | #include "monitor/monitor.h" |
7b1b5d19 | 37 | #include "qapi/qmp/qerror.h" |
1de7afc9 PB |
38 | #include "qemu/option.h" |
39 | #include "qemu/config-file.h" | |
7b1b5d19 | 40 | #include "qapi/qmp/types.h" |
9c17d615 | 41 | #include "sysemu/sysemu.h" |
737e150e | 42 | #include "block/block_int.h" |
a4dea8a9 | 43 | #include "qmp-commands.h" |
12bd451f | 44 | #include "trace.h" |
9c17d615 | 45 | #include "sysemu/arch_init.h" |
666daa68 | 46 | |
c9b62a7e | 47 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
0006383e | 48 | extern QemuOptsList qemu_common_drive_opts; |
666daa68 | 49 | |
1960966d MA |
50 | static const char *const if_name[IF_COUNT] = { |
51 | [IF_NONE] = "none", | |
52 | [IF_IDE] = "ide", | |
53 | [IF_SCSI] = "scsi", | |
54 | [IF_FLOPPY] = "floppy", | |
55 | [IF_PFLASH] = "pflash", | |
56 | [IF_MTD] = "mtd", | |
57 | [IF_SD] = "sd", | |
58 | [IF_VIRTIO] = "virtio", | |
59 | [IF_XEN] = "xen", | |
60 | }; | |
61 | ||
62 | static const int if_max_devs[IF_COUNT] = { | |
27d6bf40 MA |
63 | /* |
64 | * Do not change these numbers! They govern how drive option | |
65 | * index maps to unit and bus. That mapping is ABI. | |
66 | * | |
67 | * All controllers used to imlement if=T drives need to support | |
68 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
69 | * Otherwise, some index values map to "impossible" bus, unit | |
70 | * values. | |
71 | * | |
72 | * For instance, if you change [IF_SCSI] to 255, -drive | |
73 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
74 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
75 | * the drive can't be set up. Regression. | |
76 | */ | |
77 | [IF_IDE] = 2, | |
78 | [IF_SCSI] = 7, | |
1960966d MA |
79 | }; |
80 | ||
14bafc54 MA |
81 | /* |
82 | * We automatically delete the drive when a device using it gets | |
83 | * unplugged. Questionable feature, but we can't just drop it. | |
84 | * Device models call blockdev_mark_auto_del() to schedule the | |
85 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
86 | * when deletion is actually safe. | |
87 | */ | |
88 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
89 | { | |
90 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
91 | ||
12bde0ee PB |
92 | if (bs->job) { |
93 | block_job_cancel(bs->job); | |
94 | } | |
0fc0f1fa RH |
95 | if (dinfo) { |
96 | dinfo->auto_del = 1; | |
97 | } | |
14bafc54 MA |
98 | } |
99 | ||
100 | void blockdev_auto_del(BlockDriverState *bs) | |
101 | { | |
102 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
103 | ||
0fc0f1fa | 104 | if (dinfo && dinfo->auto_del) { |
84fb3925 | 105 | drive_put_ref(dinfo); |
14bafc54 MA |
106 | } |
107 | } | |
108 | ||
505a7fb1 MA |
109 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
110 | { | |
111 | int max_devs = if_max_devs[type]; | |
112 | return max_devs ? index / max_devs : 0; | |
113 | } | |
114 | ||
115 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
116 | { | |
117 | int max_devs = if_max_devs[type]; | |
118 | return max_devs ? index % max_devs : index; | |
119 | } | |
120 | ||
2292ddae MA |
121 | QemuOpts *drive_def(const char *optstr) |
122 | { | |
123 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
124 | } | |
125 | ||
126 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 127 | const char *optstr) |
666daa68 | 128 | { |
666daa68 | 129 | QemuOpts *opts; |
2292ddae | 130 | char buf[32]; |
666daa68 | 131 | |
2292ddae | 132 | opts = drive_def(optstr); |
666daa68 MA |
133 | if (!opts) { |
134 | return NULL; | |
135 | } | |
2292ddae MA |
136 | if (type != IF_DEFAULT) { |
137 | qemu_opt_set(opts, "if", if_name[type]); | |
138 | } | |
139 | if (index >= 0) { | |
140 | snprintf(buf, sizeof(buf), "%d", index); | |
141 | qemu_opt_set(opts, "index", buf); | |
142 | } | |
666daa68 MA |
143 | if (file) |
144 | qemu_opt_set(opts, "file", file); | |
145 | return opts; | |
146 | } | |
147 | ||
148 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
149 | { | |
150 | DriveInfo *dinfo; | |
151 | ||
152 | /* seek interface, bus and unit */ | |
153 | ||
154 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
155 | if (dinfo->type == type && | |
156 | dinfo->bus == bus && | |
157 | dinfo->unit == unit) | |
158 | return dinfo; | |
159 | } | |
160 | ||
161 | return NULL; | |
162 | } | |
163 | ||
f1bd51ac MA |
164 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
165 | { | |
166 | return drive_get(type, | |
167 | drive_index_to_bus_id(type, index), | |
168 | drive_index_to_unit_id(type, index)); | |
169 | } | |
170 | ||
666daa68 MA |
171 | int drive_get_max_bus(BlockInterfaceType type) |
172 | { | |
173 | int max_bus; | |
174 | DriveInfo *dinfo; | |
175 | ||
176 | max_bus = -1; | |
177 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
178 | if(dinfo->type == type && | |
179 | dinfo->bus > max_bus) | |
180 | max_bus = dinfo->bus; | |
181 | } | |
182 | return max_bus; | |
183 | } | |
184 | ||
13839974 MA |
185 | /* Get a block device. This should only be used for single-drive devices |
186 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
187 | appropriate bus. */ | |
188 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
189 | { | |
190 | static int next_block_unit[IF_COUNT]; | |
191 | ||
192 | return drive_get(type, 0, next_block_unit[type]++); | |
193 | } | |
194 | ||
e4700e59 | 195 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
196 | { |
197 | DriveInfo *dinfo; | |
198 | ||
199 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
200 | if (dinfo->bdrv == bs) { |
201 | return dinfo; | |
202 | } | |
666daa68 | 203 | } |
e4700e59 | 204 | return NULL; |
666daa68 MA |
205 | } |
206 | ||
666daa68 MA |
207 | static void bdrv_format_print(void *opaque, const char *name) |
208 | { | |
807105a7 | 209 | error_printf(" %s", name); |
666daa68 MA |
210 | } |
211 | ||
84fb3925 | 212 | static void drive_uninit(DriveInfo *dinfo) |
666daa68 MA |
213 | { |
214 | qemu_opts_del(dinfo->opts); | |
4f6fd349 | 215 | bdrv_unref(dinfo->bdrv); |
7267c094 | 216 | g_free(dinfo->id); |
666daa68 | 217 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 218 | g_free(dinfo->serial); |
7267c094 | 219 | g_free(dinfo); |
666daa68 MA |
220 | } |
221 | ||
84fb3925 MT |
222 | void drive_put_ref(DriveInfo *dinfo) |
223 | { | |
224 | assert(dinfo->refcount); | |
225 | if (--dinfo->refcount == 0) { | |
226 | drive_uninit(dinfo); | |
227 | } | |
228 | } | |
229 | ||
230 | void drive_get_ref(DriveInfo *dinfo) | |
231 | { | |
232 | dinfo->refcount++; | |
233 | } | |
234 | ||
aa398a5c SH |
235 | typedef struct { |
236 | QEMUBH *bh; | |
237 | DriveInfo *dinfo; | |
238 | } DrivePutRefBH; | |
239 | ||
240 | static void drive_put_ref_bh(void *opaque) | |
241 | { | |
242 | DrivePutRefBH *s = opaque; | |
243 | ||
244 | drive_put_ref(s->dinfo); | |
245 | qemu_bh_delete(s->bh); | |
246 | g_free(s); | |
247 | } | |
248 | ||
249 | /* | |
250 | * Release a drive reference in a BH | |
251 | * | |
252 | * It is not possible to use drive_put_ref() from a callback function when the | |
253 | * callers still need the drive. In such cases we schedule a BH to release the | |
254 | * reference. | |
255 | */ | |
256 | static void drive_put_ref_bh_schedule(DriveInfo *dinfo) | |
257 | { | |
258 | DrivePutRefBH *s; | |
259 | ||
260 | s = g_new(DrivePutRefBH, 1); | |
261 | s->bh = qemu_bh_new(drive_put_ref_bh, s); | |
262 | s->dinfo = dinfo; | |
263 | qemu_bh_schedule(s->bh); | |
264 | } | |
265 | ||
1ceee0d5 | 266 | static int parse_block_error_action(const char *buf, bool is_read) |
666daa68 MA |
267 | { |
268 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 269 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 270 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 271 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 272 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 273 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 274 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 275 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 276 | } else { |
807105a7 MA |
277 | error_report("'%s' invalid %s error action", |
278 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
279 | return -1; |
280 | } | |
281 | } | |
282 | ||
cc0681c4 | 283 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 284 | { |
cc0681c4 BC |
285 | if (throttle_conflicting(cfg)) { |
286 | error_setg(errp, "bps/iops/max total values and read/write values" | |
287 | " cannot be used at the same time"); | |
0563e191 ZYW |
288 | return false; |
289 | } | |
290 | ||
cc0681c4 BC |
291 | if (!throttle_is_valid(cfg)) { |
292 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
293 | return false; |
294 | } | |
295 | ||
0563e191 ZYW |
296 | return true; |
297 | } | |
298 | ||
57975222 KW |
299 | static DriveInfo *blockdev_init(QemuOpts *all_opts, |
300 | BlockInterfaceType block_default_type) | |
666daa68 MA |
301 | { |
302 | const char *buf; | |
303 | const char *file = NULL; | |
666daa68 MA |
304 | const char *serial; |
305 | const char *mediastr = ""; | |
306 | BlockInterfaceType type; | |
307 | enum { MEDIA_DISK, MEDIA_CDROM } media; | |
308 | int bus_id, unit_id; | |
309 | int cyls, heads, secs, translation; | |
666daa68 MA |
310 | int max_devs; |
311 | int index; | |
312 | int ro = 0; | |
313 | int bdrv_flags = 0; | |
314 | int on_read_error, on_write_error; | |
315 | const char *devaddr; | |
316 | DriveInfo *dinfo; | |
cc0681c4 | 317 | ThrottleConfig cfg; |
666daa68 | 318 | int snapshot = 0; |
fb0490f6 | 319 | bool copy_on_read; |
666daa68 | 320 | int ret; |
c546194f | 321 | Error *error = NULL; |
0006383e KW |
322 | QemuOpts *opts; |
323 | QDict *bs_opts; | |
324 | const char *id; | |
74fe54f2 | 325 | bool has_driver_specific_opts; |
6db5f5d6 | 326 | BlockDriver *drv = NULL; |
666daa68 | 327 | |
666daa68 | 328 | translation = BIOS_ATA_TRANSLATION_AUTO; |
666daa68 MA |
329 | media = MEDIA_DISK; |
330 | ||
0006383e KW |
331 | /* Check common options by copying from all_opts to opts, all other options |
332 | * are stored in bs_opts. */ | |
333 | id = qemu_opts_id(all_opts); | |
334 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); | |
335 | if (error_is_set(&error)) { | |
336 | qerror_report_err(error); | |
337 | error_free(error); | |
338 | return NULL; | |
339 | } | |
340 | ||
341 | bs_opts = qdict_new(); | |
342 | qemu_opts_to_qdict(all_opts, bs_opts); | |
343 | qemu_opts_absorb_qdict(opts, bs_opts, &error); | |
344 | if (error_is_set(&error)) { | |
345 | qerror_report_err(error); | |
346 | error_free(error); | |
347 | return NULL; | |
348 | } | |
349 | ||
350 | if (id) { | |
351 | qdict_del(bs_opts, "id"); | |
352 | } | |
353 | ||
74fe54f2 KW |
354 | has_driver_specific_opts = !!qdict_size(bs_opts); |
355 | ||
666daa68 MA |
356 | /* extract parameters */ |
357 | bus_id = qemu_opt_get_number(opts, "bus", 0); | |
358 | unit_id = qemu_opt_get_number(opts, "unit", -1); | |
359 | index = qemu_opt_get_number(opts, "index", -1); | |
360 | ||
361 | cyls = qemu_opt_get_number(opts, "cyls", 0); | |
362 | heads = qemu_opt_get_number(opts, "heads", 0); | |
363 | secs = qemu_opt_get_number(opts, "secs", 0); | |
364 | ||
365 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); | |
0f227a94 | 366 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 367 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
368 | |
369 | file = qemu_opt_get(opts, "file"); | |
370 | serial = qemu_opt_get(opts, "serial"); | |
371 | ||
372 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { | |
1960966d MA |
373 | for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) |
374 | ; | |
375 | if (type == IF_COUNT) { | |
807105a7 | 376 | error_report("unsupported bus type '%s'", buf); |
666daa68 MA |
377 | return NULL; |
378 | } | |
2d3999fe | 379 | } else { |
2d0d2837 | 380 | type = block_default_type; |
666daa68 | 381 | } |
2d3999fe | 382 | |
1960966d | 383 | max_devs = if_max_devs[type]; |
666daa68 MA |
384 | |
385 | if (cyls || heads || secs) { | |
aaea3f36 | 386 | if (cyls < 1) { |
807105a7 | 387 | error_report("invalid physical cyls number"); |
666daa68 MA |
388 | return NULL; |
389 | } | |
aaea3f36 | 390 | if (heads < 1) { |
807105a7 | 391 | error_report("invalid physical heads number"); |
666daa68 MA |
392 | return NULL; |
393 | } | |
aaea3f36 | 394 | if (secs < 1) { |
807105a7 | 395 | error_report("invalid physical secs number"); |
666daa68 MA |
396 | return NULL; |
397 | } | |
398 | } | |
399 | ||
400 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { | |
401 | if (!cyls) { | |
e4080f9b | 402 | error_report("'%s' trans must be used with cyls, heads and secs", |
807105a7 | 403 | buf); |
666daa68 MA |
404 | return NULL; |
405 | } | |
406 | if (!strcmp(buf, "none")) | |
407 | translation = BIOS_ATA_TRANSLATION_NONE; | |
408 | else if (!strcmp(buf, "lba")) | |
409 | translation = BIOS_ATA_TRANSLATION_LBA; | |
410 | else if (!strcmp(buf, "auto")) | |
411 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
412 | else { | |
807105a7 | 413 | error_report("'%s' invalid translation type", buf); |
666daa68 MA |
414 | return NULL; |
415 | } | |
416 | } | |
417 | ||
418 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { | |
419 | if (!strcmp(buf, "disk")) { | |
420 | media = MEDIA_DISK; | |
421 | } else if (!strcmp(buf, "cdrom")) { | |
422 | if (cyls || secs || heads) { | |
e7ff8f0e | 423 | error_report("CHS can't be set with media=%s", buf); |
666daa68 MA |
424 | return NULL; |
425 | } | |
426 | media = MEDIA_CDROM; | |
427 | } else { | |
807105a7 | 428 | error_report("'%s' invalid media", buf); |
666daa68 MA |
429 | return NULL; |
430 | } | |
431 | } | |
432 | ||
a9384aff PB |
433 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
434 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
435 | error_report("invalid discard option"); | |
436 | return NULL; | |
437 | } | |
438 | } | |
439 | ||
29c4e2b5 KW |
440 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
441 | bdrv_flags |= BDRV_O_CACHE_WB; | |
442 | } | |
443 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
444 | bdrv_flags |= BDRV_O_NOCACHE; | |
445 | } | |
446 | if (qemu_opt_get_bool(opts, "cache.no-flush", true)) { | |
447 | bdrv_flags |= BDRV_O_NO_FLUSH; | |
666daa68 MA |
448 | } |
449 | ||
450 | #ifdef CONFIG_LINUX_AIO | |
451 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
452 | if (!strcmp(buf, "native")) { | |
453 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
454 | } else if (!strcmp(buf, "threads")) { | |
455 | /* this is the default */ | |
456 | } else { | |
807105a7 | 457 | error_report("invalid aio option"); |
666daa68 MA |
458 | return NULL; |
459 | } | |
460 | } | |
461 | #endif | |
462 | ||
463 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
464 | if (is_help_option(buf)) { |
465 | error_printf("Supported formats:"); | |
466 | bdrv_iterate_format(bdrv_format_print, NULL); | |
467 | error_printf("\n"); | |
468 | return NULL; | |
666daa68 | 469 | } |
74fe54f2 | 470 | |
6db5f5d6 MQ |
471 | drv = bdrv_find_whitelisted_format(buf, ro); |
472 | if (!drv) { | |
7780d472 FZ |
473 | if (!ro && bdrv_find_whitelisted_format(buf, !ro)) { |
474 | error_report("'%s' can be only used as read-only device.", buf); | |
475 | } else { | |
476 | error_report("'%s' invalid format", buf); | |
477 | } | |
6db5f5d6 MQ |
478 | return NULL; |
479 | } | |
666daa68 MA |
480 | } |
481 | ||
0563e191 | 482 | /* disk I/O throttling */ |
cc0681c4 BC |
483 | memset(&cfg, 0, sizeof(cfg)); |
484 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 485 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 486 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 487 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 488 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 489 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 490 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 491 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 492 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 493 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 494 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 495 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 496 | |
3e9fab69 BC |
497 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
498 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
499 | cfg.buckets[THROTTLE_BPS_READ].max = | |
500 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
501 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
502 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
503 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
504 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
505 | cfg.buckets[THROTTLE_OPS_READ].max = | |
506 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
507 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
508 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 509 | |
2024c1df | 510 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
511 | |
512 | if (!check_throttle_config(&cfg, &error)) { | |
c546194f SH |
513 | error_report("%s", error_get_pretty(error)); |
514 | error_free(error); | |
0563e191 ZYW |
515 | return NULL; |
516 | } | |
517 | ||
0d92d17a JK |
518 | if (qemu_opt_get(opts, "boot") != NULL) { |
519 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
520 | "ignored. Future versions will reject this parameter. Please " | |
521 | "update your scripts.\n"); | |
522 | } | |
523 | ||
92aa5c6d | 524 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
525 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
526 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 527 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
528 | return NULL; |
529 | } | |
530 | ||
531 | on_write_error = parse_block_error_action(buf, 0); | |
532 | if (on_write_error < 0) { | |
533 | return NULL; | |
534 | } | |
535 | } | |
536 | ||
92aa5c6d | 537 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 538 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 539 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 540 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
541 | return NULL; |
542 | } | |
543 | ||
544 | on_read_error = parse_block_error_action(buf, 1); | |
545 | if (on_read_error < 0) { | |
546 | return NULL; | |
547 | } | |
548 | } | |
549 | ||
550 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
551 | if (type != IF_VIRTIO) { | |
807105a7 | 552 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
553 | return NULL; |
554 | } | |
555 | } | |
556 | ||
557 | /* compute bus and unit according index */ | |
558 | ||
559 | if (index != -1) { | |
560 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 561 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
562 | return NULL; |
563 | } | |
505a7fb1 MA |
564 | bus_id = drive_index_to_bus_id(type, index); |
565 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
566 | } |
567 | ||
568 | /* if user doesn't specify a unit_id, | |
569 | * try to find the first free | |
570 | */ | |
571 | ||
572 | if (unit_id == -1) { | |
573 | unit_id = 0; | |
574 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
575 | unit_id++; | |
576 | if (max_devs && unit_id >= max_devs) { | |
577 | unit_id -= max_devs; | |
578 | bus_id++; | |
579 | } | |
580 | } | |
581 | } | |
582 | ||
583 | /* check unit id */ | |
584 | ||
585 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
586 | error_report("unit %d too big (max is %d)", |
587 | unit_id, max_devs - 1); | |
666daa68 MA |
588 | return NULL; |
589 | } | |
590 | ||
591 | /* | |
4e5d9b57 | 592 | * catch multiple definitions |
666daa68 MA |
593 | */ |
594 | ||
595 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
596 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
597 | bus_id, unit_id, index); | |
666daa68 MA |
598 | return NULL; |
599 | } | |
600 | ||
601 | /* init */ | |
602 | ||
7267c094 | 603 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 604 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 605 | dinfo->id = g_strdup(buf); |
666daa68 MA |
606 | } else { |
607 | /* no id supplied -> create one */ | |
7267c094 | 608 | dinfo->id = g_malloc0(32); |
666daa68 MA |
609 | if (type == IF_IDE || type == IF_SCSI) |
610 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
611 | if (max_devs) | |
612 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
79d21d5b | 613 | if_name[type], bus_id, mediastr, unit_id); |
666daa68 MA |
614 | else |
615 | snprintf(dinfo->id, 32, "%s%s%i", | |
79d21d5b | 616 | if_name[type], mediastr, unit_id); |
666daa68 MA |
617 | } |
618 | dinfo->bdrv = bdrv_new(dinfo->id); | |
80dd1aae KS |
619 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
620 | dinfo->bdrv->read_only = ro; | |
666daa68 MA |
621 | dinfo->devaddr = devaddr; |
622 | dinfo->type = type; | |
623 | dinfo->bus = bus_id; | |
624 | dinfo->unit = unit_id; | |
317bb412 MA |
625 | dinfo->cyls = cyls; |
626 | dinfo->heads = heads; | |
627 | dinfo->secs = secs; | |
628 | dinfo->trans = translation; | |
0006383e | 629 | dinfo->opts = all_opts; |
84fb3925 | 630 | dinfo->refcount = 1; |
bb44619b KW |
631 | if (serial != NULL) { |
632 | dinfo->serial = g_strdup(serial); | |
633 | } | |
666daa68 MA |
634 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
635 | ||
abd7f68d MA |
636 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
637 | ||
0563e191 | 638 | /* disk I/O throttling */ |
cc0681c4 BC |
639 | if (throttle_enabled(&cfg)) { |
640 | bdrv_io_limits_enable(dinfo->bdrv); | |
641 | bdrv_set_io_limits(dinfo->bdrv, &cfg); | |
642 | } | |
0563e191 | 643 | |
666daa68 MA |
644 | switch(type) { |
645 | case IF_IDE: | |
646 | case IF_SCSI: | |
647 | case IF_XEN: | |
648 | case IF_NONE: | |
2b584959 | 649 | dinfo->media_cd = media == MEDIA_CDROM; |
666daa68 MA |
650 | break; |
651 | case IF_SD: | |
666daa68 | 652 | case IF_FLOPPY: |
666daa68 MA |
653 | case IF_PFLASH: |
654 | case IF_MTD: | |
655 | break; | |
656 | case IF_VIRTIO: | |
0006383e | 657 | { |
666daa68 | 658 | /* add virtio block device */ |
0006383e KW |
659 | QemuOpts *devopts; |
660 | devopts = qemu_opts_create_nofail(qemu_find_opts("device")); | |
eeb9c1b5 | 661 | if (arch_type == QEMU_ARCH_S390X) { |
0006383e | 662 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); |
eeb9c1b5 | 663 | } else { |
0006383e | 664 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); |
eeb9c1b5 | 665 | } |
0006383e | 666 | qemu_opt_set(devopts, "drive", dinfo->id); |
666daa68 | 667 | if (devaddr) |
0006383e | 668 | qemu_opt_set(devopts, "addr", devaddr); |
666daa68 | 669 | break; |
0006383e | 670 | } |
2292ddae | 671 | default: |
666daa68 MA |
672 | abort(); |
673 | } | |
dd5b0d71 | 674 | if (!file || !*file) { |
74fe54f2 | 675 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
676 | file = NULL; |
677 | } else { | |
678 | return dinfo; | |
679 | } | |
666daa68 MA |
680 | } |
681 | if (snapshot) { | |
682 | /* always use cache=unsafe with snapshot */ | |
683 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
684 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
685 | } | |
686 | ||
fb0490f6 SH |
687 | if (copy_on_read) { |
688 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
689 | } | |
690 | ||
ed9d4205 BC |
691 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
692 | bdrv_flags |= BDRV_O_INCOMING; | |
693 | } | |
694 | ||
666daa68 MA |
695 | if (media == MEDIA_CDROM) { |
696 | /* CDROM is fine for any interface, don't check. */ | |
697 | ro = 1; | |
698 | } else if (ro == 1) { | |
1e9eb78a JJ |
699 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && |
700 | type != IF_NONE && type != IF_PFLASH) { | |
0f227a94 | 701 | error_report("read-only not supported by this bus type"); |
a9ae2bff | 702 | goto err; |
666daa68 MA |
703 | } |
704 | } | |
705 | ||
706 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
707 | ||
04d4abe9 | 708 | if (ro && copy_on_read) { |
0f227a94 | 709 | error_report("warning: disabling copy_on_read on read-only drive"); |
04d4abe9 SH |
710 | } |
711 | ||
74fe54f2 | 712 | QINCREF(bs_opts); |
6db5f5d6 | 713 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv); |
0006383e | 714 | |
666daa68 | 715 | if (ret < 0) { |
02582abd SW |
716 | if (ret == -EMEDIUMTYPE) { |
717 | error_report("could not open disk image %s: not in %s format", | |
6db5f5d6 MQ |
718 | file ?: dinfo->id, drv ? drv->format_name : |
719 | qdict_get_str(bs_opts, "driver")); | |
02582abd SW |
720 | } else { |
721 | error_report("could not open disk image %s: %s", | |
c2ad1b0c | 722 | file ?: dinfo->id, strerror(-ret)); |
02582abd | 723 | } |
a9ae2bff | 724 | goto err; |
666daa68 MA |
725 | } |
726 | ||
727 | if (bdrv_key_required(dinfo->bdrv)) | |
728 | autostart = 0; | |
0006383e | 729 | |
74fe54f2 | 730 | QDECREF(bs_opts); |
0006383e KW |
731 | qemu_opts_del(opts); |
732 | ||
666daa68 | 733 | return dinfo; |
a9ae2bff MA |
734 | |
735 | err: | |
0006383e KW |
736 | qemu_opts_del(opts); |
737 | QDECREF(bs_opts); | |
4f6fd349 | 738 | bdrv_unref(dinfo->bdrv); |
7267c094 | 739 | g_free(dinfo->id); |
a9ae2bff | 740 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 741 | g_free(dinfo); |
a9ae2bff | 742 | return NULL; |
666daa68 MA |
743 | } |
744 | ||
57975222 KW |
745 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
746 | { | |
747 | const char *value; | |
748 | ||
749 | value = qemu_opt_get(opts, from); | |
750 | if (value) { | |
751 | qemu_opt_set(opts, to, value); | |
752 | qemu_opt_unset(opts, from); | |
753 | } | |
754 | } | |
755 | ||
756 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) | |
757 | { | |
29c4e2b5 KW |
758 | const char *value; |
759 | ||
57975222 KW |
760 | /* Change legacy command line options into QMP ones */ |
761 | qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); | |
762 | qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); | |
763 | qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); | |
764 | ||
765 | qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); | |
766 | qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); | |
767 | qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); | |
768 | ||
3e9fab69 BC |
769 | qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max"); |
770 | qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max"); | |
771 | qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max"); | |
772 | ||
773 | qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max"); | |
774 | qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max"); | |
775 | qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max"); | |
776 | ||
2024c1df BC |
777 | qemu_opt_rename(all_opts, |
778 | "iops_size", "throttling.iops-size"); | |
779 | ||
0f227a94 KW |
780 | qemu_opt_rename(all_opts, "readonly", "read-only"); |
781 | ||
29c4e2b5 KW |
782 | value = qemu_opt_get(all_opts, "cache"); |
783 | if (value) { | |
784 | int flags = 0; | |
785 | ||
786 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
787 | error_report("invalid cache option"); | |
788 | return NULL; | |
789 | } | |
790 | ||
791 | /* Specific options take precedence */ | |
792 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
793 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
794 | !!(flags & BDRV_O_CACHE_WB)); | |
795 | } | |
796 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
797 | qemu_opt_set_bool(all_opts, "cache.direct", | |
798 | !!(flags & BDRV_O_NOCACHE)); | |
799 | } | |
800 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
801 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
802 | !!(flags & BDRV_O_NO_FLUSH)); | |
803 | } | |
804 | qemu_opt_unset(all_opts, "cache"); | |
805 | } | |
806 | ||
57975222 KW |
807 | return blockdev_init(all_opts, block_default_type); |
808 | } | |
809 | ||
666daa68 MA |
810 | void do_commit(Monitor *mon, const QDict *qdict) |
811 | { | |
666daa68 | 812 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 813 | BlockDriverState *bs; |
e8877497 | 814 | int ret; |
666daa68 | 815 | |
6ab4b5ab | 816 | if (!strcmp(device, "all")) { |
e8877497 | 817 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
818 | } else { |
819 | bs = bdrv_find(device); | |
ac59eb95 | 820 | if (!bs) { |
58513bde | 821 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 822 | return; |
6ab4b5ab | 823 | } |
2d3735d3 | 824 | ret = bdrv_commit(bs); |
58513bde JC |
825 | } |
826 | if (ret < 0) { | |
827 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
828 | strerror(-ret)); | |
666daa68 MA |
829 | } |
830 | } | |
831 | ||
6cc2a415 PB |
832 | static void blockdev_do_action(int kind, void *data, Error **errp) |
833 | { | |
c8a83e85 KW |
834 | TransactionAction action; |
835 | TransactionActionList list; | |
6cc2a415 PB |
836 | |
837 | action.kind = kind; | |
838 | action.data = data; | |
839 | list.value = &action; | |
840 | list.next = NULL; | |
841 | qmp_transaction(&list, errp); | |
842 | } | |
843 | ||
6106e249 LC |
844 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
845 | bool has_format, const char *format, | |
6cc2a415 | 846 | bool has_mode, enum NewImageMode mode, |
6106e249 | 847 | Error **errp) |
f8882568 | 848 | { |
6cc2a415 PB |
849 | BlockdevSnapshot snapshot = { |
850 | .device = (char *) device, | |
851 | .snapshot_file = (char *) snapshot_file, | |
852 | .has_format = has_format, | |
853 | .format = (char *) format, | |
854 | .has_mode = has_mode, | |
855 | .mode = mode, | |
856 | }; | |
c8a83e85 KW |
857 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
858 | &snapshot, errp); | |
f8882568 JS |
859 | } |
860 | ||
8802d1fd JC |
861 | |
862 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 863 | |
ba5d6ab6 | 864 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
865 | |
866 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
867 | abort() will be called, clean() will always be called if it present. */ | |
868 | typedef struct BdrvActionOps { | |
869 | /* Size of state struct, in bytes. */ | |
870 | size_t instance_size; | |
871 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 872 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 873 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 874 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 875 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 876 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 877 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 878 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
879 | } BdrvActionOps; |
880 | ||
881 | /* | |
882 | * This structure must be arranged as first member in child type, assuming | |
883 | * that compiler will also arrange it to the same address with parent instance. | |
884 | * Later it will be used in free(). | |
885 | */ | |
ba5d6ab6 | 886 | struct BlkTransactionState { |
c8a83e85 | 887 | TransactionAction *action; |
ba0c86a3 | 888 | const BdrvActionOps *ops; |
ba5d6ab6 | 889 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
890 | }; |
891 | ||
892 | /* external snapshot private data */ | |
ba5d6ab6 SH |
893 | typedef struct ExternalSnapshotState { |
894 | BlkTransactionState common; | |
8802d1fd JC |
895 | BlockDriverState *old_bs; |
896 | BlockDriverState *new_bs; | |
ba5d6ab6 | 897 | } ExternalSnapshotState; |
8802d1fd | 898 | |
ba5d6ab6 | 899 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
900 | Error **errp) |
901 | { | |
9b9877ee WX |
902 | BlockDriver *drv; |
903 | int flags, ret; | |
904 | Error *local_err = NULL; | |
e2a31e87 WX |
905 | const char *device; |
906 | const char *new_image_file; | |
907 | const char *format = "qcow2"; | |
908 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
909 | ExternalSnapshotState *state = |
910 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 911 | TransactionAction *action = common->action; |
9b9877ee | 912 | |
e2a31e87 | 913 | /* get parameters */ |
c8a83e85 | 914 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 WX |
915 | |
916 | device = action->blockdev_snapshot_sync->device; | |
917 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; | |
918 | if (action->blockdev_snapshot_sync->has_format) { | |
919 | format = action->blockdev_snapshot_sync->format; | |
920 | } | |
921 | if (action->blockdev_snapshot_sync->has_mode) { | |
922 | mode = action->blockdev_snapshot_sync->mode; | |
923 | } | |
924 | ||
925 | /* start processing */ | |
9b9877ee WX |
926 | drv = bdrv_find_format(format); |
927 | if (!drv) { | |
928 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
929 | return; | |
930 | } | |
931 | ||
ba5d6ab6 SH |
932 | state->old_bs = bdrv_find(device); |
933 | if (!state->old_bs) { | |
9b9877ee WX |
934 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
935 | return; | |
936 | } | |
937 | ||
ba5d6ab6 | 938 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
939 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
940 | return; | |
941 | } | |
942 | ||
ba5d6ab6 | 943 | if (bdrv_in_use(state->old_bs)) { |
9b9877ee WX |
944 | error_set(errp, QERR_DEVICE_IN_USE, device); |
945 | return; | |
946 | } | |
947 | ||
ba5d6ab6 SH |
948 | if (!bdrv_is_read_only(state->old_bs)) { |
949 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
950 | error_set(errp, QERR_IO_ERROR); |
951 | return; | |
952 | } | |
953 | } | |
954 | ||
ba5d6ab6 | 955 | flags = state->old_bs->open_flags; |
9b9877ee | 956 | |
9b9877ee WX |
957 | /* create new image w/backing file */ |
958 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
959 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
960 | state->old_bs->filename, |
961 | state->old_bs->drv->format_name, | |
9b9877ee WX |
962 | NULL, -1, flags, &local_err, false); |
963 | if (error_is_set(&local_err)) { | |
964 | error_propagate(errp, local_err); | |
965 | return; | |
966 | } | |
967 | } | |
968 | ||
969 | /* We will manually add the backing_hd field to the bs later */ | |
ba5d6ab6 | 970 | state->new_bs = bdrv_new(""); |
9b9877ee WX |
971 | /* TODO Inherit bs->options or only take explicit options with an |
972 | * extended QMP command? */ | |
ba5d6ab6 | 973 | ret = bdrv_open(state->new_bs, new_image_file, NULL, |
9b9877ee WX |
974 | flags | BDRV_O_NO_BACKING, drv); |
975 | if (ret != 0) { | |
0eef407c | 976 | error_setg_file_open(errp, -ret, new_image_file); |
9b9877ee WX |
977 | } |
978 | } | |
979 | ||
ba5d6ab6 | 980 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 981 | { |
ba5d6ab6 SH |
982 | ExternalSnapshotState *state = |
983 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 984 | |
ba5d6ab6 SH |
985 | /* This removes our old bs and adds the new bs */ |
986 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
987 | /* We don't need (or want) to use the transactional |
988 | * bdrv_reopen_multiple() across all the entries at once, because we | |
989 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 990 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
991 | NULL); |
992 | } | |
993 | ||
ba5d6ab6 | 994 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 995 | { |
ba5d6ab6 SH |
996 | ExternalSnapshotState *state = |
997 | DO_UPCAST(ExternalSnapshotState, common, common); | |
998 | if (state->new_bs) { | |
4f6fd349 | 999 | bdrv_unref(state->new_bs); |
96b86bf7 WX |
1000 | } |
1001 | } | |
1002 | ||
3037f364 SH |
1003 | typedef struct DriveBackupState { |
1004 | BlkTransactionState common; | |
1005 | BlockDriverState *bs; | |
1006 | BlockJob *job; | |
1007 | } DriveBackupState; | |
1008 | ||
1009 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1010 | { | |
1011 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1012 | DriveBackup *backup; | |
1013 | Error *local_err = NULL; | |
1014 | ||
1015 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1016 | backup = common->action->drive_backup; | |
1017 | ||
1018 | qmp_drive_backup(backup->device, backup->target, | |
1019 | backup->has_format, backup->format, | |
b53169ea | 1020 | backup->sync, |
3037f364 SH |
1021 | backup->has_mode, backup->mode, |
1022 | backup->has_speed, backup->speed, | |
1023 | backup->has_on_source_error, backup->on_source_error, | |
1024 | backup->has_on_target_error, backup->on_target_error, | |
1025 | &local_err); | |
1026 | if (error_is_set(&local_err)) { | |
1027 | error_propagate(errp, local_err); | |
1028 | state->bs = NULL; | |
1029 | state->job = NULL; | |
1030 | return; | |
1031 | } | |
1032 | ||
1033 | state->bs = bdrv_find(backup->device); | |
1034 | state->job = state->bs->job; | |
1035 | } | |
1036 | ||
1037 | static void drive_backup_abort(BlkTransactionState *common) | |
1038 | { | |
1039 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1040 | BlockDriverState *bs = state->bs; | |
1041 | ||
1042 | /* Only cancel if it's the job we started */ | |
1043 | if (bs && bs->job && bs->job == state->job) { | |
1044 | block_job_cancel_sync(bs->job); | |
1045 | } | |
1046 | } | |
1047 | ||
78b18b78 SH |
1048 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1049 | { | |
1050 | error_setg(errp, "Transaction aborted using Abort action"); | |
1051 | } | |
1052 | ||
1053 | static void abort_commit(BlkTransactionState *common) | |
1054 | { | |
dfc6f865 | 1055 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1056 | } |
1057 | ||
ba0c86a3 | 1058 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1059 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1060 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1061 | .prepare = external_snapshot_prepare, |
1062 | .commit = external_snapshot_commit, | |
1063 | .abort = external_snapshot_abort, | |
1064 | }, | |
3037f364 SH |
1065 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1066 | .instance_size = sizeof(DriveBackupState), | |
1067 | .prepare = drive_backup_prepare, | |
1068 | .abort = drive_backup_abort, | |
1069 | }, | |
78b18b78 SH |
1070 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1071 | .instance_size = sizeof(BlkTransactionState), | |
1072 | .prepare = abort_prepare, | |
1073 | .commit = abort_commit, | |
1074 | }, | |
ba0c86a3 WX |
1075 | }; |
1076 | ||
8802d1fd JC |
1077 | /* |
1078 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1079 | * then we do not pivot any of the devices in the group, and abandon the | |
1080 | * snapshots | |
1081 | */ | |
c8a83e85 | 1082 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1083 | { |
c8a83e85 | 1084 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1085 | BlkTransactionState *state, *next; |
43e17041 | 1086 | Error *local_err = NULL; |
8802d1fd | 1087 | |
ba5d6ab6 | 1088 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1089 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1090 | ||
1091 | /* drain all i/o before any snapshots */ | |
1092 | bdrv_drain_all(); | |
1093 | ||
1094 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1095 | while (NULL != dev_entry) { | |
c8a83e85 | 1096 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1097 | const BdrvActionOps *ops; |
52e7c241 | 1098 | |
8802d1fd JC |
1099 | dev_info = dev_entry->value; |
1100 | dev_entry = dev_entry->next; | |
1101 | ||
ba0c86a3 WX |
1102 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1103 | ||
1104 | ops = &actions[dev_info->kind]; | |
ba5d6ab6 SH |
1105 | state = g_malloc0(ops->instance_size); |
1106 | state->ops = ops; | |
1107 | state->action = dev_info; | |
1108 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1109 | |
ba5d6ab6 | 1110 | state->ops->prepare(state, &local_err); |
ba0c86a3 WX |
1111 | if (error_is_set(&local_err)) { |
1112 | error_propagate(errp, local_err); | |
1113 | goto delete_and_fail; | |
8802d1fd | 1114 | } |
8802d1fd JC |
1115 | } |
1116 | ||
ba5d6ab6 | 1117 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1118 | if (state->ops->commit) { |
1119 | state->ops->commit(state); | |
1120 | } | |
8802d1fd JC |
1121 | } |
1122 | ||
1123 | /* success */ | |
1124 | goto exit; | |
1125 | ||
1126 | delete_and_fail: | |
1127 | /* | |
1128 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1129 | * the original bs for all images | |
1130 | */ | |
ba5d6ab6 SH |
1131 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1132 | if (state->ops->abort) { | |
1133 | state->ops->abort(state); | |
ba0c86a3 | 1134 | } |
8802d1fd JC |
1135 | } |
1136 | exit: | |
ba5d6ab6 SH |
1137 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1138 | if (state->ops->clean) { | |
1139 | state->ops->clean(state); | |
ba0c86a3 | 1140 | } |
ba5d6ab6 | 1141 | g_free(state); |
8802d1fd | 1142 | } |
8802d1fd JC |
1143 | } |
1144 | ||
1145 | ||
92d48558 | 1146 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1147 | { |
2d3735d3 SH |
1148 | if (bdrv_in_use(bs)) { |
1149 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
1150 | return; | |
1151 | } | |
2c6942fa | 1152 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
1153 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
1154 | return; | |
ea8f942f | 1155 | } |
92d48558 | 1156 | |
025ccaa7 PB |
1157 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1158 | bdrv_dev_eject_request(bs, force); | |
1159 | if (!force) { | |
92d48558 LC |
1160 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
1161 | return; | |
025ccaa7 | 1162 | } |
666daa68 | 1163 | } |
92d48558 | 1164 | |
3b5276b5 | 1165 | bdrv_close(bs); |
666daa68 MA |
1166 | } |
1167 | ||
c245b6a3 | 1168 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1169 | { |
1170 | BlockDriverState *bs; | |
666daa68 | 1171 | |
c245b6a3 | 1172 | bs = bdrv_find(device); |
666daa68 | 1173 | if (!bs) { |
c245b6a3 LC |
1174 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1175 | return; | |
92d48558 LC |
1176 | } |
1177 | ||
c245b6a3 | 1178 | eject_device(bs, force, errp); |
666daa68 MA |
1179 | } |
1180 | ||
a4dea8a9 | 1181 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
1182 | { |
1183 | BlockDriverState *bs; | |
1184 | int err; | |
1185 | ||
a4dea8a9 | 1186 | bs = bdrv_find(device); |
666daa68 | 1187 | if (!bs) { |
a4dea8a9 LC |
1188 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1189 | return; | |
666daa68 MA |
1190 | } |
1191 | ||
a4dea8a9 | 1192 | err = bdrv_set_key(bs, password); |
666daa68 | 1193 | if (err == -EINVAL) { |
a4dea8a9 LC |
1194 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1195 | return; | |
666daa68 | 1196 | } else if (err < 0) { |
a4dea8a9 LC |
1197 | error_set(errp, QERR_INVALID_PASSWORD); |
1198 | return; | |
666daa68 | 1199 | } |
666daa68 MA |
1200 | } |
1201 | ||
333a96ec LC |
1202 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1203 | int bdrv_flags, BlockDriver *drv, | |
1204 | const char *password, Error **errp) | |
1205 | { | |
0eef407c LC |
1206 | int ret; |
1207 | ||
1208 | ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv); | |
1209 | if (ret < 0) { | |
1210 | error_setg_file_open(errp, -ret, filename); | |
333a96ec LC |
1211 | return; |
1212 | } | |
1213 | ||
1214 | if (bdrv_key_required(bs)) { | |
1215 | if (password) { | |
1216 | if (bdrv_set_key(bs, password) < 0) { | |
1217 | error_set(errp, QERR_INVALID_PASSWORD); | |
1218 | } | |
1219 | } else { | |
1220 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1221 | bdrv_get_encrypted_filename(bs)); | |
1222 | } | |
1223 | } else if (password) { | |
1224 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | void qmp_change_blockdev(const char *device, const char *filename, | |
1229 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
1230 | { |
1231 | BlockDriverState *bs; | |
1232 | BlockDriver *drv = NULL; | |
1233 | int bdrv_flags; | |
92d48558 | 1234 | Error *err = NULL; |
666daa68 MA |
1235 | |
1236 | bs = bdrv_find(device); | |
1237 | if (!bs) { | |
333a96ec LC |
1238 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1239 | return; | |
666daa68 | 1240 | } |
333a96ec LC |
1241 | |
1242 | if (format) { | |
b64ec4e4 | 1243 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1244 | if (!drv) { |
333a96ec LC |
1245 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1246 | return; | |
666daa68 MA |
1247 | } |
1248 | } | |
333a96ec | 1249 | |
92d48558 LC |
1250 | eject_device(bs, 0, &err); |
1251 | if (error_is_set(&err)) { | |
333a96ec LC |
1252 | error_propagate(errp, err); |
1253 | return; | |
666daa68 | 1254 | } |
333a96ec | 1255 | |
528f7663 | 1256 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1257 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1258 | |
1259 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1260 | } |
9063f814 | 1261 | |
727f005e | 1262 | /* throttling disk I/O limits */ |
80047da5 | 1263 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1264 | int64_t bps_wr, |
1265 | int64_t iops, | |
1266 | int64_t iops_rd, | |
1267 | int64_t iops_wr, | |
1268 | bool has_bps_max, | |
1269 | int64_t bps_max, | |
1270 | bool has_bps_rd_max, | |
1271 | int64_t bps_rd_max, | |
1272 | bool has_bps_wr_max, | |
1273 | int64_t bps_wr_max, | |
1274 | bool has_iops_max, | |
1275 | int64_t iops_max, | |
1276 | bool has_iops_rd_max, | |
1277 | int64_t iops_rd_max, | |
1278 | bool has_iops_wr_max, | |
2024c1df BC |
1279 | int64_t iops_wr_max, |
1280 | bool has_iops_size, | |
1281 | int64_t iops_size, Error **errp) | |
727f005e | 1282 | { |
cc0681c4 | 1283 | ThrottleConfig cfg; |
727f005e ZYW |
1284 | BlockDriverState *bs; |
1285 | ||
80047da5 | 1286 | bs = bdrv_find(device); |
727f005e | 1287 | if (!bs) { |
80047da5 LC |
1288 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1289 | return; | |
727f005e ZYW |
1290 | } |
1291 | ||
cc0681c4 BC |
1292 | memset(&cfg, 0, sizeof(cfg)); |
1293 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1294 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1295 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1296 | ||
1297 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1298 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1299 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1300 | ||
3e9fab69 BC |
1301 | if (has_bps_max) { |
1302 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1303 | } | |
1304 | if (has_bps_rd_max) { | |
1305 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1306 | } | |
1307 | if (has_bps_wr_max) { | |
1308 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1309 | } | |
1310 | if (has_iops_max) { | |
1311 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1312 | } | |
1313 | if (has_iops_rd_max) { | |
1314 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1315 | } | |
1316 | if (has_iops_wr_max) { | |
1317 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1318 | } | |
727f005e | 1319 | |
2024c1df BC |
1320 | if (has_iops_size) { |
1321 | cfg.op_size = iops_size; | |
1322 | } | |
cc0681c4 BC |
1323 | |
1324 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1325 | return; |
727f005e ZYW |
1326 | } |
1327 | ||
cc0681c4 | 1328 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1329 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1330 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1331 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1332 | } |
1333 | ||
1334 | if (bs->io_limits_enabled) { | |
1335 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1336 | } |
727f005e ZYW |
1337 | } |
1338 | ||
9063f814 RH |
1339 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1340 | { | |
1341 | const char *id = qdict_get_str(qdict, "id"); | |
1342 | BlockDriverState *bs; | |
9063f814 RH |
1343 | |
1344 | bs = bdrv_find(id); | |
1345 | if (!bs) { | |
1346 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1347 | return -1; | |
1348 | } | |
8591675f MT |
1349 | if (bdrv_in_use(bs)) { |
1350 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1351 | return -1; | |
1352 | } | |
9063f814 RH |
1353 | |
1354 | /* quiesce block driver; prevent further io */ | |
922453bc | 1355 | bdrv_drain_all(); |
9063f814 RH |
1356 | bdrv_flush(bs); |
1357 | bdrv_close(bs); | |
1358 | ||
fa879d62 | 1359 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1360 | * then we need to make the drive anonymous until the device |
1361 | * can be removed. If this is a drive with no device backing | |
1362 | * then we can just get rid of the block driver state right here. | |
1363 | */ | |
fa879d62 | 1364 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1365 | bdrv_make_anon(bs); |
293c51a6 SH |
1366 | |
1367 | /* Further I/O must not pause the guest */ | |
1368 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1369 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 RH |
1370 | } else { |
1371 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1372 | } |
1373 | ||
9063f814 RH |
1374 | return 0; |
1375 | } | |
6d4a2b3a | 1376 | |
5e7caacb | 1377 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1378 | { |
6d4a2b3a | 1379 | BlockDriverState *bs; |
8732901e | 1380 | int ret; |
6d4a2b3a CH |
1381 | |
1382 | bs = bdrv_find(device); | |
1383 | if (!bs) { | |
5e7caacb LC |
1384 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1385 | return; | |
6d4a2b3a CH |
1386 | } |
1387 | ||
1388 | if (size < 0) { | |
939a1cc3 | 1389 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1390 | return; |
6d4a2b3a CH |
1391 | } |
1392 | ||
92b7a08d PL |
1393 | /* complete all in-flight operations before resizing the device */ |
1394 | bdrv_drain_all(); | |
1395 | ||
8732901e KW |
1396 | ret = bdrv_truncate(bs, size); |
1397 | switch (ret) { | |
939a1cc3 SH |
1398 | case 0: |
1399 | break; | |
1400 | case -ENOMEDIUM: | |
1401 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1402 | break; | |
1403 | case -ENOTSUP: | |
1404 | error_set(errp, QERR_UNSUPPORTED); | |
1405 | break; | |
1406 | case -EACCES: | |
1407 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1408 | break; | |
1409 | case -EBUSY: | |
1410 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1411 | break; | |
1412 | default: | |
8732901e | 1413 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1414 | break; |
6d4a2b3a | 1415 | } |
6d4a2b3a | 1416 | } |
12bd451f | 1417 | |
9abf2dba | 1418 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1419 | { |
1420 | BlockDriverState *bs = opaque; | |
1421 | QObject *obj; | |
1422 | ||
9abf2dba | 1423 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1424 | |
1425 | assert(bs->job); | |
1426 | obj = qobject_from_block_job(bs->job); | |
1427 | if (ret < 0) { | |
1428 | QDict *dict = qobject_to_qdict(obj); | |
1429 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1430 | } | |
1431 | ||
370521a1 SH |
1432 | if (block_job_is_cancelled(bs->job)) { |
1433 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1434 | } else { | |
1435 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1436 | } | |
12bd451f | 1437 | qobject_decref(obj); |
aa398a5c SH |
1438 | |
1439 | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); | |
12bd451f SH |
1440 | } |
1441 | ||
1442 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1443 | const char *base, bool has_speed, int64_t speed, |
1444 | bool has_on_error, BlockdevOnError on_error, | |
1445 | Error **errp) | |
12bd451f SH |
1446 | { |
1447 | BlockDriverState *bs; | |
c8c3080f | 1448 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1449 | Error *local_err = NULL; |
12bd451f | 1450 | |
1d809098 PB |
1451 | if (!has_on_error) { |
1452 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1453 | } | |
1454 | ||
12bd451f SH |
1455 | bs = bdrv_find(device); |
1456 | if (!bs) { | |
1457 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1458 | return; | |
1459 | } | |
1460 | ||
12bd451f | 1461 | if (base) { |
c8c3080f MT |
1462 | base_bs = bdrv_find_backing_image(bs, base); |
1463 | if (base_bs == NULL) { | |
1464 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1465 | return; | |
1466 | } | |
12bd451f SH |
1467 | } |
1468 | ||
c83c66c3 | 1469 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1470 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1471 | if (error_is_set(&local_err)) { |
1472 | error_propagate(errp, local_err); | |
1473 | return; | |
12bd451f SH |
1474 | } |
1475 | ||
aa398a5c SH |
1476 | /* Grab a reference so hotplug does not delete the BlockDriverState from |
1477 | * underneath us. | |
1478 | */ | |
1479 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1480 | ||
12bd451f SH |
1481 | trace_qmp_block_stream(bs, bs->job); |
1482 | } | |
2d47c6e9 | 1483 | |
ed61fc10 JC |
1484 | void qmp_block_commit(const char *device, |
1485 | bool has_base, const char *base, const char *top, | |
1486 | bool has_speed, int64_t speed, | |
1487 | Error **errp) | |
1488 | { | |
1489 | BlockDriverState *bs; | |
1490 | BlockDriverState *base_bs, *top_bs; | |
1491 | Error *local_err = NULL; | |
1492 | /* This will be part of the QMP command, if/when the | |
1493 | * BlockdevOnError change for blkmirror makes it in | |
1494 | */ | |
92aa5c6d | 1495 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1496 | |
1497 | /* drain all i/o before commits */ | |
1498 | bdrv_drain_all(); | |
1499 | ||
1500 | bs = bdrv_find(device); | |
1501 | if (!bs) { | |
1502 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1503 | return; | |
1504 | } | |
ed61fc10 JC |
1505 | |
1506 | /* default top_bs is the active layer */ | |
1507 | top_bs = bs; | |
1508 | ||
1509 | if (top) { | |
1510 | if (strcmp(bs->filename, top) != 0) { | |
1511 | top_bs = bdrv_find_backing_image(bs, top); | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | if (top_bs == NULL) { | |
1516 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1517 | return; | |
1518 | } | |
1519 | ||
d5208c45 JC |
1520 | if (has_base && base) { |
1521 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1522 | } else { | |
1523 | base_bs = bdrv_find_base(top_bs); | |
1524 | } | |
1525 | ||
1526 | if (base_bs == NULL) { | |
1527 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1528 | return; | |
1529 | } | |
1530 | ||
ed61fc10 JC |
1531 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1532 | &local_err); | |
1533 | if (local_err != NULL) { | |
1534 | error_propagate(errp, local_err); | |
1535 | return; | |
1536 | } | |
1537 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1538 | * underneath us. | |
1539 | */ | |
1540 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1541 | } | |
1542 | ||
99a9addf SH |
1543 | void qmp_drive_backup(const char *device, const char *target, |
1544 | bool has_format, const char *format, | |
b53169ea | 1545 | enum MirrorSyncMode sync, |
99a9addf SH |
1546 | bool has_mode, enum NewImageMode mode, |
1547 | bool has_speed, int64_t speed, | |
1548 | bool has_on_source_error, BlockdevOnError on_source_error, | |
1549 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1550 | Error **errp) | |
1551 | { | |
1552 | BlockDriverState *bs; | |
1553 | BlockDriverState *target_bs; | |
fc5d3f84 | 1554 | BlockDriverState *source = NULL; |
99a9addf SH |
1555 | BlockDriver *drv = NULL; |
1556 | Error *local_err = NULL; | |
1557 | int flags; | |
1558 | int64_t size; | |
1559 | int ret; | |
1560 | ||
1561 | if (!has_speed) { | |
1562 | speed = 0; | |
1563 | } | |
1564 | if (!has_on_source_error) { | |
1565 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1566 | } | |
1567 | if (!has_on_target_error) { | |
1568 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1569 | } | |
1570 | if (!has_mode) { | |
1571 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1572 | } | |
1573 | ||
1574 | bs = bdrv_find(device); | |
1575 | if (!bs) { | |
1576 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1577 | return; | |
1578 | } | |
1579 | ||
1580 | if (!bdrv_is_inserted(bs)) { | |
1581 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1582 | return; | |
1583 | } | |
1584 | ||
1585 | if (!has_format) { | |
1586 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1587 | } | |
1588 | if (format) { | |
1589 | drv = bdrv_find_format(format); | |
1590 | if (!drv) { | |
1591 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1592 | return; | |
1593 | } | |
1594 | } | |
1595 | ||
1596 | if (bdrv_in_use(bs)) { | |
1597 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1598 | return; | |
1599 | } | |
1600 | ||
1601 | flags = bs->open_flags | BDRV_O_RDWR; | |
1602 | ||
fc5d3f84 IM |
1603 | /* See if we have a backing HD we can use to create our new image |
1604 | * on top of. */ | |
1605 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
1606 | source = bs->backing_hd; | |
1607 | if (!source) { | |
1608 | sync = MIRROR_SYNC_MODE_FULL; | |
1609 | } | |
1610 | } | |
1611 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
1612 | source = bs; | |
1613 | } | |
1614 | ||
99a9addf SH |
1615 | size = bdrv_getlength(bs); |
1616 | if (size < 0) { | |
1617 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1618 | return; | |
1619 | } | |
1620 | ||
1621 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1622 | assert(format && drv); | |
fc5d3f84 IM |
1623 | if (source) { |
1624 | bdrv_img_create(target, format, source->filename, | |
1625 | source->drv->format_name, NULL, | |
1626 | size, flags, &local_err, false); | |
1627 | } else { | |
1628 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
1629 | size, flags, &local_err, false); | |
1630 | } | |
99a9addf SH |
1631 | } |
1632 | ||
1633 | if (error_is_set(&local_err)) { | |
1634 | error_propagate(errp, local_err); | |
1635 | return; | |
1636 | } | |
1637 | ||
1638 | target_bs = bdrv_new(""); | |
1639 | ret = bdrv_open(target_bs, target, NULL, flags, drv); | |
1640 | if (ret < 0) { | |
4f6fd349 | 1641 | bdrv_unref(target_bs); |
99a9addf SH |
1642 | error_setg_file_open(errp, -ret, target); |
1643 | return; | |
1644 | } | |
1645 | ||
fc5d3f84 | 1646 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
1647 | block_job_cb, bs, &local_err); |
1648 | if (local_err != NULL) { | |
4f6fd349 | 1649 | bdrv_unref(target_bs); |
99a9addf SH |
1650 | error_propagate(errp, local_err); |
1651 | return; | |
1652 | } | |
1653 | ||
1654 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1655 | * underneath us. | |
1656 | */ | |
1657 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1658 | } | |
1659 | ||
08e4ed6c PB |
1660 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1661 | ||
d9b902db PB |
1662 | void qmp_drive_mirror(const char *device, const char *target, |
1663 | bool has_format, const char *format, | |
1664 | enum MirrorSyncMode sync, | |
1665 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1666 | bool has_speed, int64_t speed, |
eee13dfe | 1667 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1668 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1669 | bool has_on_source_error, BlockdevOnError on_source_error, |
1670 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1671 | Error **errp) | |
d9b902db | 1672 | { |
d9b902db PB |
1673 | BlockDriverState *bs; |
1674 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
1675 | BlockDriver *drv = NULL; |
1676 | Error *local_err = NULL; | |
1677 | int flags; | |
ac3c5d83 | 1678 | int64_t size; |
d9b902db PB |
1679 | int ret; |
1680 | ||
1681 | if (!has_speed) { | |
1682 | speed = 0; | |
1683 | } | |
b952b558 PB |
1684 | if (!has_on_source_error) { |
1685 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1686 | } | |
1687 | if (!has_on_target_error) { | |
1688 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1689 | } | |
d9b902db PB |
1690 | if (!has_mode) { |
1691 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1692 | } | |
eee13dfe PB |
1693 | if (!has_granularity) { |
1694 | granularity = 0; | |
1695 | } | |
08e4ed6c PB |
1696 | if (!has_buf_size) { |
1697 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1698 | } | |
1699 | ||
eee13dfe PB |
1700 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1701 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1702 | return; | |
1703 | } | |
1704 | if (granularity & (granularity - 1)) { | |
1705 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1706 | return; | |
1707 | } | |
d9b902db PB |
1708 | |
1709 | bs = bdrv_find(device); | |
1710 | if (!bs) { | |
1711 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1712 | return; | |
1713 | } | |
1714 | ||
1715 | if (!bdrv_is_inserted(bs)) { | |
1716 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1717 | return; | |
1718 | } | |
1719 | ||
1720 | if (!has_format) { | |
1721 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1722 | } | |
1723 | if (format) { | |
1724 | drv = bdrv_find_format(format); | |
1725 | if (!drv) { | |
1726 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1727 | return; | |
1728 | } | |
1729 | } | |
1730 | ||
1731 | if (bdrv_in_use(bs)) { | |
1732 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1733 | return; | |
1734 | } | |
1735 | ||
1736 | flags = bs->open_flags | BDRV_O_RDWR; | |
1737 | source = bs->backing_hd; | |
1738 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
1739 | sync = MIRROR_SYNC_MODE_FULL; | |
1740 | } | |
1741 | ||
ac3c5d83 SH |
1742 | size = bdrv_getlength(bs); |
1743 | if (size < 0) { | |
1744 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1745 | return; | |
1746 | } | |
1747 | ||
d9b902db PB |
1748 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
1749 | /* create new image w/o backing file */ | |
1750 | assert(format && drv); | |
cf8f2426 | 1751 | bdrv_img_create(target, format, |
f382d43a | 1752 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
1753 | } else { |
1754 | switch (mode) { | |
1755 | case NEW_IMAGE_MODE_EXISTING: | |
1756 | ret = 0; | |
1757 | break; | |
1758 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
1759 | /* create new image with backing file */ | |
cf8f2426 LC |
1760 | bdrv_img_create(target, format, |
1761 | source->filename, | |
1762 | source->drv->format_name, | |
f382d43a | 1763 | NULL, size, flags, &local_err, false); |
d9b902db PB |
1764 | break; |
1765 | default: | |
1766 | abort(); | |
1767 | } | |
1768 | } | |
1769 | ||
cf8f2426 LC |
1770 | if (error_is_set(&local_err)) { |
1771 | error_propagate(errp, local_err); | |
d9b902db PB |
1772 | return; |
1773 | } | |
1774 | ||
b812f671 PB |
1775 | /* Mirroring takes care of copy-on-write using the source's backing |
1776 | * file. | |
1777 | */ | |
d9b902db | 1778 | target_bs = bdrv_new(""); |
de9c0cec | 1779 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv); |
d9b902db | 1780 | if (ret < 0) { |
4f6fd349 | 1781 | bdrv_unref(target_bs); |
0eef407c | 1782 | error_setg_file_open(errp, -ret, target); |
d9b902db PB |
1783 | return; |
1784 | } | |
1785 | ||
08e4ed6c | 1786 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 1787 | on_source_error, on_target_error, |
b952b558 | 1788 | block_job_cb, bs, &local_err); |
d9b902db | 1789 | if (local_err != NULL) { |
4f6fd349 | 1790 | bdrv_unref(target_bs); |
d9b902db PB |
1791 | error_propagate(errp, local_err); |
1792 | return; | |
1793 | } | |
1794 | ||
1795 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1796 | * underneath us. | |
1797 | */ | |
1798 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1799 | } | |
1800 | ||
2d47c6e9 SH |
1801 | static BlockJob *find_block_job(const char *device) |
1802 | { | |
1803 | BlockDriverState *bs; | |
1804 | ||
1805 | bs = bdrv_find(device); | |
1806 | if (!bs || !bs->job) { | |
1807 | return NULL; | |
1808 | } | |
1809 | return bs->job; | |
1810 | } | |
1811 | ||
882ec7ce | 1812 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
1813 | { |
1814 | BlockJob *job = find_block_job(device); | |
1815 | ||
1816 | if (!job) { | |
7ef15070 | 1817 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
1818 | return; |
1819 | } | |
1820 | ||
882ec7ce | 1821 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 1822 | } |
370521a1 | 1823 | |
6e37fb81 PB |
1824 | void qmp_block_job_cancel(const char *device, |
1825 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
1826 | { |
1827 | BlockJob *job = find_block_job(device); | |
1828 | ||
6e37fb81 PB |
1829 | if (!has_force) { |
1830 | force = false; | |
1831 | } | |
1832 | ||
370521a1 | 1833 | if (!job) { |
7ef15070 | 1834 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
1835 | return; |
1836 | } | |
6e37fb81 | 1837 | if (job->paused && !force) { |
8acc72a4 PB |
1838 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
1839 | return; | |
1840 | } | |
370521a1 SH |
1841 | |
1842 | trace_qmp_block_job_cancel(job); | |
1843 | block_job_cancel(job); | |
1844 | } | |
fb5458cd | 1845 | |
6e37fb81 PB |
1846 | void qmp_block_job_pause(const char *device, Error **errp) |
1847 | { | |
1848 | BlockJob *job = find_block_job(device); | |
1849 | ||
1850 | if (!job) { | |
1851 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1852 | return; | |
1853 | } | |
1854 | ||
1855 | trace_qmp_block_job_pause(job); | |
1856 | block_job_pause(job); | |
1857 | } | |
1858 | ||
1859 | void qmp_block_job_resume(const char *device, Error **errp) | |
1860 | { | |
1861 | BlockJob *job = find_block_job(device); | |
1862 | ||
1863 | if (!job) { | |
1864 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1865 | return; | |
1866 | } | |
1867 | ||
1868 | trace_qmp_block_job_resume(job); | |
1869 | block_job_resume(job); | |
1870 | } | |
1871 | ||
aeae883b PB |
1872 | void qmp_block_job_complete(const char *device, Error **errp) |
1873 | { | |
1874 | BlockJob *job = find_block_job(device); | |
1875 | ||
1876 | if (!job) { | |
1877 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1878 | return; | |
1879 | } | |
1880 | ||
1881 | trace_qmp_block_job_complete(job); | |
1882 | block_job_complete(job, errp); | |
1883 | } | |
1884 | ||
fb5458cd SH |
1885 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
1886 | { | |
1887 | BlockJobInfoList **prev = opaque; | |
1888 | BlockJob *job = bs->job; | |
1889 | ||
1890 | if (job) { | |
30e628b7 PB |
1891 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
1892 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
1893 | (*prev)->next = elem; |
1894 | *prev = elem; | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
1899 | { | |
1900 | /* Dummy is a fake list element for holding the head pointer */ | |
1901 | BlockJobInfoList dummy = {}; | |
1902 | BlockJobInfoList *prev = &dummy; | |
1903 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
1904 | return dummy.next; | |
1905 | } | |
4d454574 | 1906 | |
0006383e | 1907 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 1908 | .name = "drive", |
0006383e | 1909 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
1910 | .desc = { |
1911 | { | |
1912 | .name = "bus", | |
1913 | .type = QEMU_OPT_NUMBER, | |
1914 | .help = "bus number", | |
1915 | },{ | |
1916 | .name = "unit", | |
1917 | .type = QEMU_OPT_NUMBER, | |
1918 | .help = "unit number (i.e. lun for scsi)", | |
1919 | },{ | |
1920 | .name = "if", | |
1921 | .type = QEMU_OPT_STRING, | |
1922 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
1923 | },{ | |
1924 | .name = "index", | |
1925 | .type = QEMU_OPT_NUMBER, | |
1926 | .help = "index number", | |
1927 | },{ | |
1928 | .name = "cyls", | |
1929 | .type = QEMU_OPT_NUMBER, | |
1930 | .help = "number of cylinders (ide disk geometry)", | |
1931 | },{ | |
1932 | .name = "heads", | |
1933 | .type = QEMU_OPT_NUMBER, | |
1934 | .help = "number of heads (ide disk geometry)", | |
1935 | },{ | |
1936 | .name = "secs", | |
1937 | .type = QEMU_OPT_NUMBER, | |
1938 | .help = "number of sectors (ide disk geometry)", | |
1939 | },{ | |
1940 | .name = "trans", | |
1941 | .type = QEMU_OPT_STRING, | |
1942 | .help = "chs translation (auto, lba. none)", | |
1943 | },{ | |
1944 | .name = "media", | |
1945 | .type = QEMU_OPT_STRING, | |
1946 | .help = "media type (disk, cdrom)", | |
1947 | },{ | |
1948 | .name = "snapshot", | |
1949 | .type = QEMU_OPT_BOOL, | |
1950 | .help = "enable/disable snapshot mode", | |
1951 | },{ | |
1952 | .name = "file", | |
1953 | .type = QEMU_OPT_STRING, | |
1954 | .help = "disk image", | |
a9384aff PB |
1955 | },{ |
1956 | .name = "discard", | |
1957 | .type = QEMU_OPT_STRING, | |
1958 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 1959 | },{ |
29c4e2b5 KW |
1960 | .name = "cache.writeback", |
1961 | .type = QEMU_OPT_BOOL, | |
1962 | .help = "enables writeback mode for any caches", | |
1963 | },{ | |
1964 | .name = "cache.direct", | |
1965 | .type = QEMU_OPT_BOOL, | |
1966 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
1967 | },{ | |
1968 | .name = "cache.no-flush", | |
1969 | .type = QEMU_OPT_BOOL, | |
1970 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
1971 | },{ |
1972 | .name = "aio", | |
1973 | .type = QEMU_OPT_STRING, | |
1974 | .help = "host AIO implementation (threads, native)", | |
1975 | },{ | |
1976 | .name = "format", | |
1977 | .type = QEMU_OPT_STRING, | |
1978 | .help = "disk format (raw, qcow2, ...)", | |
1979 | },{ | |
1980 | .name = "serial", | |
1981 | .type = QEMU_OPT_STRING, | |
1982 | .help = "disk serial number", | |
1983 | },{ | |
1984 | .name = "rerror", | |
1985 | .type = QEMU_OPT_STRING, | |
1986 | .help = "read error action", | |
1987 | },{ | |
1988 | .name = "werror", | |
1989 | .type = QEMU_OPT_STRING, | |
1990 | .help = "write error action", | |
1991 | },{ | |
1992 | .name = "addr", | |
1993 | .type = QEMU_OPT_STRING, | |
1994 | .help = "pci address (virtio only)", | |
1995 | },{ | |
0f227a94 | 1996 | .name = "read-only", |
4d454574 PB |
1997 | .type = QEMU_OPT_BOOL, |
1998 | .help = "open drive file as read-only", | |
1999 | },{ | |
57975222 | 2000 | .name = "throttling.iops-total", |
4d454574 PB |
2001 | .type = QEMU_OPT_NUMBER, |
2002 | .help = "limit total I/O operations per second", | |
2003 | },{ | |
57975222 | 2004 | .name = "throttling.iops-read", |
4d454574 PB |
2005 | .type = QEMU_OPT_NUMBER, |
2006 | .help = "limit read operations per second", | |
2007 | },{ | |
57975222 | 2008 | .name = "throttling.iops-write", |
4d454574 PB |
2009 | .type = QEMU_OPT_NUMBER, |
2010 | .help = "limit write operations per second", | |
2011 | },{ | |
57975222 | 2012 | .name = "throttling.bps-total", |
4d454574 PB |
2013 | .type = QEMU_OPT_NUMBER, |
2014 | .help = "limit total bytes per second", | |
2015 | },{ | |
57975222 | 2016 | .name = "throttling.bps-read", |
4d454574 PB |
2017 | .type = QEMU_OPT_NUMBER, |
2018 | .help = "limit read bytes per second", | |
2019 | },{ | |
57975222 | 2020 | .name = "throttling.bps-write", |
4d454574 PB |
2021 | .type = QEMU_OPT_NUMBER, |
2022 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2023 | },{ |
2024 | .name = "throttling.iops-total-max", | |
2025 | .type = QEMU_OPT_NUMBER, | |
2026 | .help = "I/O operations burst", | |
2027 | },{ | |
2028 | .name = "throttling.iops-read-max", | |
2029 | .type = QEMU_OPT_NUMBER, | |
2030 | .help = "I/O operations read burst", | |
2031 | },{ | |
2032 | .name = "throttling.iops-write-max", | |
2033 | .type = QEMU_OPT_NUMBER, | |
2034 | .help = "I/O operations write burst", | |
2035 | },{ | |
2036 | .name = "throttling.bps-total-max", | |
2037 | .type = QEMU_OPT_NUMBER, | |
2038 | .help = "total bytes burst", | |
2039 | },{ | |
2040 | .name = "throttling.bps-read-max", | |
2041 | .type = QEMU_OPT_NUMBER, | |
2042 | .help = "total bytes read burst", | |
2043 | },{ | |
2044 | .name = "throttling.bps-write-max", | |
2045 | .type = QEMU_OPT_NUMBER, | |
2046 | .help = "total bytes write burst", | |
2024c1df BC |
2047 | },{ |
2048 | .name = "throttling.iops-size", | |
2049 | .type = QEMU_OPT_NUMBER, | |
2050 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2051 | },{ |
2052 | .name = "copy-on-read", | |
2053 | .type = QEMU_OPT_BOOL, | |
2054 | .help = "copy read data from backing file into image file", | |
2055 | },{ | |
2056 | .name = "boot", | |
2057 | .type = QEMU_OPT_BOOL, | |
2058 | .help = "(deprecated, ignored)", | |
2059 | }, | |
2060 | { /* end of list */ } | |
2061 | }, | |
2062 | }; | |
0006383e KW |
2063 | |
2064 | QemuOptsList qemu_drive_opts = { | |
2065 | .name = "drive", | |
2066 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2067 | .desc = { | |
492fdc6f KW |
2068 | /* |
2069 | * no elements => accept any params | |
2070 | * validation will happen later | |
2071 | */ | |
0006383e KW |
2072 | { /* end of list */ } |
2073 | }, | |
2074 | }; |