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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; | |
fa510ebf FZ |
237 | BlockDriverState *bs; |
238 | } BDRVPutRefBH; | |
aa398a5c | 239 | |
fa510ebf | 240 | static void bdrv_put_ref_bh(void *opaque) |
aa398a5c | 241 | { |
fa510ebf | 242 | BDRVPutRefBH *s = opaque; |
aa398a5c | 243 | |
fa510ebf | 244 | bdrv_unref(s->bs); |
aa398a5c SH |
245 | qemu_bh_delete(s->bh); |
246 | g_free(s); | |
247 | } | |
248 | ||
249 | /* | |
fa510ebf | 250 | * Release a BDS reference in a BH |
aa398a5c | 251 | * |
fa510ebf FZ |
252 | * It is not safe to use bdrv_unref() from a callback function when the callers |
253 | * still need the BlockDriverState. In such cases we schedule a BH to release | |
254 | * the reference. | |
aa398a5c | 255 | */ |
fa510ebf | 256 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
aa398a5c | 257 | { |
fa510ebf | 258 | BDRVPutRefBH *s; |
aa398a5c | 259 | |
fa510ebf FZ |
260 | s = g_new(BDRVPutRefBH, 1); |
261 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); | |
262 | s->bs = bs; | |
aa398a5c SH |
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 | } | |
1df6fa4b | 446 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
29c4e2b5 | 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 | |
8f94a6e4 | 471 | drv = bdrv_find_format(buf); |
6db5f5d6 | 472 | if (!drv) { |
8f94a6e4 | 473 | error_report("'%s' invalid format", buf); |
6db5f5d6 MQ |
474 | return NULL; |
475 | } | |
666daa68 MA |
476 | } |
477 | ||
0563e191 | 478 | /* disk I/O throttling */ |
cc0681c4 BC |
479 | memset(&cfg, 0, sizeof(cfg)); |
480 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 481 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 482 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 483 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 484 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 485 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 486 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 487 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 488 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 489 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 490 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 491 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 492 | |
3e9fab69 BC |
493 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
494 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
495 | cfg.buckets[THROTTLE_BPS_READ].max = | |
496 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
497 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
498 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
499 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
500 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
501 | cfg.buckets[THROTTLE_OPS_READ].max = | |
502 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
503 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
504 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 505 | |
2024c1df | 506 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
507 | |
508 | if (!check_throttle_config(&cfg, &error)) { | |
c546194f SH |
509 | error_report("%s", error_get_pretty(error)); |
510 | error_free(error); | |
0563e191 ZYW |
511 | return NULL; |
512 | } | |
513 | ||
0d92d17a JK |
514 | if (qemu_opt_get(opts, "boot") != NULL) { |
515 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
516 | "ignored. Future versions will reject this parameter. Please " | |
517 | "update your scripts.\n"); | |
518 | } | |
519 | ||
92aa5c6d | 520 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
521 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
522 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 523 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
524 | return NULL; |
525 | } | |
526 | ||
527 | on_write_error = parse_block_error_action(buf, 0); | |
528 | if (on_write_error < 0) { | |
529 | return NULL; | |
530 | } | |
531 | } | |
532 | ||
92aa5c6d | 533 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 534 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 535 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 536 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
537 | return NULL; |
538 | } | |
539 | ||
540 | on_read_error = parse_block_error_action(buf, 1); | |
541 | if (on_read_error < 0) { | |
542 | return NULL; | |
543 | } | |
544 | } | |
545 | ||
546 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
547 | if (type != IF_VIRTIO) { | |
807105a7 | 548 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
549 | return NULL; |
550 | } | |
551 | } | |
552 | ||
553 | /* compute bus and unit according index */ | |
554 | ||
555 | if (index != -1) { | |
556 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 557 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
558 | return NULL; |
559 | } | |
505a7fb1 MA |
560 | bus_id = drive_index_to_bus_id(type, index); |
561 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
562 | } |
563 | ||
564 | /* if user doesn't specify a unit_id, | |
565 | * try to find the first free | |
566 | */ | |
567 | ||
568 | if (unit_id == -1) { | |
569 | unit_id = 0; | |
570 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
571 | unit_id++; | |
572 | if (max_devs && unit_id >= max_devs) { | |
573 | unit_id -= max_devs; | |
574 | bus_id++; | |
575 | } | |
576 | } | |
577 | } | |
578 | ||
579 | /* check unit id */ | |
580 | ||
581 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
582 | error_report("unit %d too big (max is %d)", |
583 | unit_id, max_devs - 1); | |
666daa68 MA |
584 | return NULL; |
585 | } | |
586 | ||
587 | /* | |
4e5d9b57 | 588 | * catch multiple definitions |
666daa68 MA |
589 | */ |
590 | ||
591 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
592 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
593 | bus_id, unit_id, index); | |
666daa68 MA |
594 | return NULL; |
595 | } | |
596 | ||
597 | /* init */ | |
598 | ||
7267c094 | 599 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 600 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 601 | dinfo->id = g_strdup(buf); |
666daa68 MA |
602 | } else { |
603 | /* no id supplied -> create one */ | |
7267c094 | 604 | dinfo->id = g_malloc0(32); |
666daa68 MA |
605 | if (type == IF_IDE || type == IF_SCSI) |
606 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
607 | if (max_devs) | |
608 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
79d21d5b | 609 | if_name[type], bus_id, mediastr, unit_id); |
666daa68 MA |
610 | else |
611 | snprintf(dinfo->id, 32, "%s%s%i", | |
79d21d5b | 612 | if_name[type], mediastr, unit_id); |
666daa68 MA |
613 | } |
614 | dinfo->bdrv = bdrv_new(dinfo->id); | |
80dd1aae KS |
615 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
616 | dinfo->bdrv->read_only = ro; | |
666daa68 MA |
617 | dinfo->devaddr = devaddr; |
618 | dinfo->type = type; | |
619 | dinfo->bus = bus_id; | |
620 | dinfo->unit = unit_id; | |
317bb412 MA |
621 | dinfo->cyls = cyls; |
622 | dinfo->heads = heads; | |
623 | dinfo->secs = secs; | |
624 | dinfo->trans = translation; | |
0006383e | 625 | dinfo->opts = all_opts; |
84fb3925 | 626 | dinfo->refcount = 1; |
bb44619b KW |
627 | if (serial != NULL) { |
628 | dinfo->serial = g_strdup(serial); | |
629 | } | |
666daa68 MA |
630 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
631 | ||
abd7f68d MA |
632 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
633 | ||
0563e191 | 634 | /* disk I/O throttling */ |
cc0681c4 BC |
635 | if (throttle_enabled(&cfg)) { |
636 | bdrv_io_limits_enable(dinfo->bdrv); | |
637 | bdrv_set_io_limits(dinfo->bdrv, &cfg); | |
638 | } | |
0563e191 | 639 | |
666daa68 MA |
640 | switch(type) { |
641 | case IF_IDE: | |
642 | case IF_SCSI: | |
643 | case IF_XEN: | |
644 | case IF_NONE: | |
2b584959 | 645 | dinfo->media_cd = media == MEDIA_CDROM; |
666daa68 MA |
646 | break; |
647 | case IF_SD: | |
666daa68 | 648 | case IF_FLOPPY: |
666daa68 MA |
649 | case IF_PFLASH: |
650 | case IF_MTD: | |
651 | break; | |
652 | case IF_VIRTIO: | |
0006383e | 653 | { |
666daa68 | 654 | /* add virtio block device */ |
0006383e KW |
655 | QemuOpts *devopts; |
656 | devopts = qemu_opts_create_nofail(qemu_find_opts("device")); | |
eeb9c1b5 | 657 | if (arch_type == QEMU_ARCH_S390X) { |
0006383e | 658 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); |
eeb9c1b5 | 659 | } else { |
0006383e | 660 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); |
eeb9c1b5 | 661 | } |
0006383e | 662 | qemu_opt_set(devopts, "drive", dinfo->id); |
666daa68 | 663 | if (devaddr) |
0006383e | 664 | qemu_opt_set(devopts, "addr", devaddr); |
666daa68 | 665 | break; |
0006383e | 666 | } |
2292ddae | 667 | default: |
666daa68 MA |
668 | abort(); |
669 | } | |
dd5b0d71 | 670 | if (!file || !*file) { |
74fe54f2 | 671 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
672 | file = NULL; |
673 | } else { | |
674 | return dinfo; | |
675 | } | |
666daa68 MA |
676 | } |
677 | if (snapshot) { | |
678 | /* always use cache=unsafe with snapshot */ | |
679 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
680 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
681 | } | |
682 | ||
fb0490f6 SH |
683 | if (copy_on_read) { |
684 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
685 | } | |
686 | ||
ed9d4205 BC |
687 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
688 | bdrv_flags |= BDRV_O_INCOMING; | |
689 | } | |
690 | ||
666daa68 MA |
691 | if (media == MEDIA_CDROM) { |
692 | /* CDROM is fine for any interface, don't check. */ | |
693 | ro = 1; | |
694 | } else if (ro == 1) { | |
1e9eb78a JJ |
695 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && |
696 | type != IF_NONE && type != IF_PFLASH) { | |
0f227a94 | 697 | error_report("read-only not supported by this bus type"); |
a9ae2bff | 698 | goto err; |
666daa68 MA |
699 | } |
700 | } | |
701 | ||
702 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
703 | ||
04d4abe9 | 704 | if (ro && copy_on_read) { |
0f227a94 | 705 | error_report("warning: disabling copy_on_read on read-only drive"); |
04d4abe9 SH |
706 | } |
707 | ||
74fe54f2 | 708 | QINCREF(bs_opts); |
34b5d2c6 | 709 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv, &error); |
0006383e | 710 | |
666daa68 | 711 | if (ret < 0) { |
34b5d2c6 MR |
712 | error_report("could not open disk image %s: %s", |
713 | file ?: dinfo->id, error_get_pretty(error)); | |
a9ae2bff | 714 | goto err; |
666daa68 MA |
715 | } |
716 | ||
717 | if (bdrv_key_required(dinfo->bdrv)) | |
718 | autostart = 0; | |
0006383e | 719 | |
74fe54f2 | 720 | QDECREF(bs_opts); |
0006383e KW |
721 | qemu_opts_del(opts); |
722 | ||
666daa68 | 723 | return dinfo; |
a9ae2bff MA |
724 | |
725 | err: | |
0006383e KW |
726 | qemu_opts_del(opts); |
727 | QDECREF(bs_opts); | |
4f6fd349 | 728 | bdrv_unref(dinfo->bdrv); |
7267c094 | 729 | g_free(dinfo->id); |
a9ae2bff | 730 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 731 | g_free(dinfo); |
a9ae2bff | 732 | return NULL; |
666daa68 MA |
733 | } |
734 | ||
57975222 KW |
735 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
736 | { | |
737 | const char *value; | |
738 | ||
739 | value = qemu_opt_get(opts, from); | |
740 | if (value) { | |
741 | qemu_opt_set(opts, to, value); | |
742 | qemu_opt_unset(opts, from); | |
743 | } | |
744 | } | |
745 | ||
746 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) | |
747 | { | |
29c4e2b5 KW |
748 | const char *value; |
749 | ||
57975222 KW |
750 | /* Change legacy command line options into QMP ones */ |
751 | qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); | |
752 | qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); | |
753 | qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); | |
754 | ||
755 | qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); | |
756 | qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); | |
757 | qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); | |
758 | ||
3e9fab69 BC |
759 | qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max"); |
760 | qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max"); | |
761 | qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max"); | |
762 | ||
763 | qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max"); | |
764 | qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max"); | |
765 | qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max"); | |
766 | ||
2024c1df BC |
767 | qemu_opt_rename(all_opts, |
768 | "iops_size", "throttling.iops-size"); | |
769 | ||
0f227a94 KW |
770 | qemu_opt_rename(all_opts, "readonly", "read-only"); |
771 | ||
29c4e2b5 KW |
772 | value = qemu_opt_get(all_opts, "cache"); |
773 | if (value) { | |
774 | int flags = 0; | |
775 | ||
776 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
777 | error_report("invalid cache option"); | |
778 | return NULL; | |
779 | } | |
780 | ||
781 | /* Specific options take precedence */ | |
782 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
783 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
784 | !!(flags & BDRV_O_CACHE_WB)); | |
785 | } | |
786 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
787 | qemu_opt_set_bool(all_opts, "cache.direct", | |
788 | !!(flags & BDRV_O_NOCACHE)); | |
789 | } | |
790 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
791 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
792 | !!(flags & BDRV_O_NO_FLUSH)); | |
793 | } | |
794 | qemu_opt_unset(all_opts, "cache"); | |
795 | } | |
796 | ||
57975222 KW |
797 | return blockdev_init(all_opts, block_default_type); |
798 | } | |
799 | ||
666daa68 MA |
800 | void do_commit(Monitor *mon, const QDict *qdict) |
801 | { | |
666daa68 | 802 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 803 | BlockDriverState *bs; |
e8877497 | 804 | int ret; |
666daa68 | 805 | |
6ab4b5ab | 806 | if (!strcmp(device, "all")) { |
e8877497 | 807 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
808 | } else { |
809 | bs = bdrv_find(device); | |
ac59eb95 | 810 | if (!bs) { |
58513bde | 811 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 812 | return; |
6ab4b5ab | 813 | } |
2d3735d3 | 814 | ret = bdrv_commit(bs); |
58513bde JC |
815 | } |
816 | if (ret < 0) { | |
817 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
818 | strerror(-ret)); | |
666daa68 MA |
819 | } |
820 | } | |
821 | ||
6cc2a415 PB |
822 | static void blockdev_do_action(int kind, void *data, Error **errp) |
823 | { | |
c8a83e85 KW |
824 | TransactionAction action; |
825 | TransactionActionList list; | |
6cc2a415 PB |
826 | |
827 | action.kind = kind; | |
828 | action.data = data; | |
829 | list.value = &action; | |
830 | list.next = NULL; | |
831 | qmp_transaction(&list, errp); | |
832 | } | |
833 | ||
6106e249 LC |
834 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
835 | bool has_format, const char *format, | |
6cc2a415 | 836 | bool has_mode, enum NewImageMode mode, |
6106e249 | 837 | Error **errp) |
f8882568 | 838 | { |
6cc2a415 PB |
839 | BlockdevSnapshot snapshot = { |
840 | .device = (char *) device, | |
841 | .snapshot_file = (char *) snapshot_file, | |
842 | .has_format = has_format, | |
843 | .format = (char *) format, | |
844 | .has_mode = has_mode, | |
845 | .mode = mode, | |
846 | }; | |
c8a83e85 KW |
847 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
848 | &snapshot, errp); | |
f8882568 JS |
849 | } |
850 | ||
f323bc9e WX |
851 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
852 | const char *name, | |
853 | Error **errp) | |
854 | { | |
855 | BlockdevSnapshotInternal snapshot = { | |
856 | .device = (char *) device, | |
857 | .name = (char *) name | |
858 | }; | |
859 | ||
860 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
861 | &snapshot, errp); | |
862 | } | |
863 | ||
44e3e053 WX |
864 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
865 | bool has_id, | |
866 | const char *id, | |
867 | bool has_name, | |
868 | const char *name, | |
869 | Error **errp) | |
870 | { | |
871 | BlockDriverState *bs = bdrv_find(device); | |
872 | QEMUSnapshotInfo sn; | |
873 | Error *local_err = NULL; | |
874 | SnapshotInfo *info = NULL; | |
875 | int ret; | |
876 | ||
877 | if (!bs) { | |
878 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
879 | return NULL; | |
880 | } | |
881 | ||
882 | if (!has_id) { | |
883 | id = NULL; | |
884 | } | |
885 | ||
886 | if (!has_name) { | |
887 | name = NULL; | |
888 | } | |
889 | ||
890 | if (!id && !name) { | |
891 | error_setg(errp, "Name or id must be provided"); | |
892 | return NULL; | |
893 | } | |
894 | ||
895 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); | |
896 | if (error_is_set(&local_err)) { | |
897 | error_propagate(errp, local_err); | |
898 | return NULL; | |
899 | } | |
900 | if (!ret) { | |
901 | error_setg(errp, | |
902 | "Snapshot with id '%s' and name '%s' does not exist on " | |
903 | "device '%s'", | |
904 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
905 | return NULL; | |
906 | } | |
907 | ||
908 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
909 | if (error_is_set(&local_err)) { | |
910 | error_propagate(errp, local_err); | |
911 | return NULL; | |
912 | } | |
913 | ||
914 | info = g_malloc0(sizeof(SnapshotInfo)); | |
915 | info->id = g_strdup(sn.id_str); | |
916 | info->name = g_strdup(sn.name); | |
917 | info->date_nsec = sn.date_nsec; | |
918 | info->date_sec = sn.date_sec; | |
919 | info->vm_state_size = sn.vm_state_size; | |
920 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
921 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
922 | ||
923 | return info; | |
924 | } | |
8802d1fd JC |
925 | |
926 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 927 | |
ba5d6ab6 | 928 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
929 | |
930 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
931 | abort() will be called, clean() will always be called if it present. */ | |
932 | typedef struct BdrvActionOps { | |
933 | /* Size of state struct, in bytes. */ | |
934 | size_t instance_size; | |
935 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 936 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 937 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 938 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 939 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 940 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 941 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 942 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
943 | } BdrvActionOps; |
944 | ||
945 | /* | |
946 | * This structure must be arranged as first member in child type, assuming | |
947 | * that compiler will also arrange it to the same address with parent instance. | |
948 | * Later it will be used in free(). | |
949 | */ | |
ba5d6ab6 | 950 | struct BlkTransactionState { |
c8a83e85 | 951 | TransactionAction *action; |
ba0c86a3 | 952 | const BdrvActionOps *ops; |
ba5d6ab6 | 953 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
954 | }; |
955 | ||
bbe86010 WX |
956 | /* internal snapshot private data */ |
957 | typedef struct InternalSnapshotState { | |
958 | BlkTransactionState common; | |
959 | BlockDriverState *bs; | |
960 | QEMUSnapshotInfo sn; | |
961 | } InternalSnapshotState; | |
962 | ||
963 | static void internal_snapshot_prepare(BlkTransactionState *common, | |
964 | Error **errp) | |
965 | { | |
966 | const char *device; | |
967 | const char *name; | |
968 | BlockDriverState *bs; | |
969 | QEMUSnapshotInfo old_sn, *sn; | |
970 | bool ret; | |
971 | qemu_timeval tv; | |
972 | BlockdevSnapshotInternal *internal; | |
973 | InternalSnapshotState *state; | |
974 | int ret1; | |
975 | ||
976 | g_assert(common->action->kind == | |
977 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); | |
978 | internal = common->action->blockdev_snapshot_internal_sync; | |
979 | state = DO_UPCAST(InternalSnapshotState, common, common); | |
980 | ||
981 | /* 1. parse input */ | |
982 | device = internal->device; | |
983 | name = internal->name; | |
984 | ||
985 | /* 2. check for validation */ | |
986 | bs = bdrv_find(device); | |
987 | if (!bs) { | |
988 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
989 | return; | |
990 | } | |
991 | ||
992 | if (!bdrv_is_inserted(bs)) { | |
993 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
994 | return; | |
995 | } | |
996 | ||
997 | if (bdrv_is_read_only(bs)) { | |
998 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
999 | return; | |
1000 | } | |
1001 | ||
1002 | if (!bdrv_can_snapshot(bs)) { | |
1003 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, | |
1004 | bs->drv->format_name, device, "internal snapshot"); | |
1005 | return; | |
1006 | } | |
1007 | ||
1008 | if (!strlen(name)) { | |
1009 | error_setg(errp, "Name is empty"); | |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | /* check whether a snapshot with name exist */ | |
1014 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, errp); | |
1015 | if (error_is_set(errp)) { | |
1016 | return; | |
1017 | } else if (ret) { | |
1018 | error_setg(errp, | |
1019 | "Snapshot with name '%s' already exists on device '%s'", | |
1020 | name, device); | |
1021 | return; | |
1022 | } | |
1023 | ||
1024 | /* 3. take the snapshot */ | |
1025 | sn = &state->sn; | |
1026 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1027 | qemu_gettimeofday(&tv); | |
1028 | sn->date_sec = tv.tv_sec; | |
1029 | sn->date_nsec = tv.tv_usec * 1000; | |
1030 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1031 | ||
1032 | ret1 = bdrv_snapshot_create(bs, sn); | |
1033 | if (ret1 < 0) { | |
1034 | error_setg_errno(errp, -ret1, | |
1035 | "Failed to create snapshot '%s' on device '%s'", | |
1036 | name, device); | |
1037 | return; | |
1038 | } | |
1039 | ||
1040 | /* 4. succeed, mark a snapshot is created */ | |
1041 | state->bs = bs; | |
1042 | } | |
1043 | ||
1044 | static void internal_snapshot_abort(BlkTransactionState *common) | |
1045 | { | |
1046 | InternalSnapshotState *state = | |
1047 | DO_UPCAST(InternalSnapshotState, common, common); | |
1048 | BlockDriverState *bs = state->bs; | |
1049 | QEMUSnapshotInfo *sn = &state->sn; | |
1050 | Error *local_error = NULL; | |
1051 | ||
1052 | if (!bs) { | |
1053 | return; | |
1054 | } | |
1055 | ||
1056 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1057 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1058 | "device '%s' in abort: %s", | |
1059 | sn->id_str, | |
1060 | sn->name, | |
1061 | bdrv_get_device_name(bs), | |
1062 | error_get_pretty(local_error)); | |
1063 | error_free(local_error); | |
1064 | } | |
1065 | } | |
1066 | ||
ba0c86a3 | 1067 | /* external snapshot private data */ |
ba5d6ab6 SH |
1068 | typedef struct ExternalSnapshotState { |
1069 | BlkTransactionState common; | |
8802d1fd JC |
1070 | BlockDriverState *old_bs; |
1071 | BlockDriverState *new_bs; | |
ba5d6ab6 | 1072 | } ExternalSnapshotState; |
8802d1fd | 1073 | |
ba5d6ab6 | 1074 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
1075 | Error **errp) |
1076 | { | |
9b9877ee WX |
1077 | BlockDriver *drv; |
1078 | int flags, ret; | |
1079 | Error *local_err = NULL; | |
e2a31e87 WX |
1080 | const char *device; |
1081 | const char *new_image_file; | |
1082 | const char *format = "qcow2"; | |
1083 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
1084 | ExternalSnapshotState *state = |
1085 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1086 | TransactionAction *action = common->action; |
9b9877ee | 1087 | |
e2a31e87 | 1088 | /* get parameters */ |
c8a83e85 | 1089 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 WX |
1090 | |
1091 | device = action->blockdev_snapshot_sync->device; | |
1092 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; | |
1093 | if (action->blockdev_snapshot_sync->has_format) { | |
1094 | format = action->blockdev_snapshot_sync->format; | |
1095 | } | |
1096 | if (action->blockdev_snapshot_sync->has_mode) { | |
1097 | mode = action->blockdev_snapshot_sync->mode; | |
1098 | } | |
1099 | ||
1100 | /* start processing */ | |
9b9877ee WX |
1101 | drv = bdrv_find_format(format); |
1102 | if (!drv) { | |
1103 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1104 | return; | |
1105 | } | |
1106 | ||
ba5d6ab6 SH |
1107 | state->old_bs = bdrv_find(device); |
1108 | if (!state->old_bs) { | |
9b9877ee WX |
1109 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1110 | return; | |
1111 | } | |
1112 | ||
ba5d6ab6 | 1113 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
1114 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1115 | return; | |
1116 | } | |
1117 | ||
ba5d6ab6 | 1118 | if (bdrv_in_use(state->old_bs)) { |
9b9877ee WX |
1119 | error_set(errp, QERR_DEVICE_IN_USE, device); |
1120 | return; | |
1121 | } | |
1122 | ||
ba5d6ab6 SH |
1123 | if (!bdrv_is_read_only(state->old_bs)) { |
1124 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
1125 | error_set(errp, QERR_IO_ERROR); |
1126 | return; | |
1127 | } | |
1128 | } | |
1129 | ||
f6186f49 BC |
1130 | if (bdrv_check_ext_snapshot(state->old_bs) != EXT_SNAPSHOT_ALLOWED) { |
1131 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); | |
1132 | return; | |
1133 | } | |
1134 | ||
ba5d6ab6 | 1135 | flags = state->old_bs->open_flags; |
9b9877ee | 1136 | |
9b9877ee WX |
1137 | /* create new image w/backing file */ |
1138 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1139 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
1140 | state->old_bs->filename, |
1141 | state->old_bs->drv->format_name, | |
9b9877ee WX |
1142 | NULL, -1, flags, &local_err, false); |
1143 | if (error_is_set(&local_err)) { | |
1144 | error_propagate(errp, local_err); | |
1145 | return; | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | /* We will manually add the backing_hd field to the bs later */ | |
ba5d6ab6 | 1150 | state->new_bs = bdrv_new(""); |
9b9877ee WX |
1151 | /* TODO Inherit bs->options or only take explicit options with an |
1152 | * extended QMP command? */ | |
ba5d6ab6 | 1153 | ret = bdrv_open(state->new_bs, new_image_file, NULL, |
34b5d2c6 | 1154 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
9b9877ee | 1155 | if (ret != 0) { |
34b5d2c6 | 1156 | error_propagate(errp, local_err); |
9b9877ee WX |
1157 | } |
1158 | } | |
1159 | ||
ba5d6ab6 | 1160 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 1161 | { |
ba5d6ab6 SH |
1162 | ExternalSnapshotState *state = |
1163 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1164 | |
ba5d6ab6 SH |
1165 | /* This removes our old bs and adds the new bs */ |
1166 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1167 | /* We don't need (or want) to use the transactional |
1168 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1169 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 1170 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
1171 | NULL); |
1172 | } | |
1173 | ||
ba5d6ab6 | 1174 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1175 | { |
ba5d6ab6 SH |
1176 | ExternalSnapshotState *state = |
1177 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1178 | if (state->new_bs) { | |
4f6fd349 | 1179 | bdrv_unref(state->new_bs); |
96b86bf7 WX |
1180 | } |
1181 | } | |
1182 | ||
3037f364 SH |
1183 | typedef struct DriveBackupState { |
1184 | BlkTransactionState common; | |
1185 | BlockDriverState *bs; | |
1186 | BlockJob *job; | |
1187 | } DriveBackupState; | |
1188 | ||
1189 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1190 | { | |
1191 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1192 | DriveBackup *backup; | |
1193 | Error *local_err = NULL; | |
1194 | ||
1195 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1196 | backup = common->action->drive_backup; | |
1197 | ||
1198 | qmp_drive_backup(backup->device, backup->target, | |
1199 | backup->has_format, backup->format, | |
b53169ea | 1200 | backup->sync, |
3037f364 SH |
1201 | backup->has_mode, backup->mode, |
1202 | backup->has_speed, backup->speed, | |
1203 | backup->has_on_source_error, backup->on_source_error, | |
1204 | backup->has_on_target_error, backup->on_target_error, | |
1205 | &local_err); | |
1206 | if (error_is_set(&local_err)) { | |
1207 | error_propagate(errp, local_err); | |
1208 | state->bs = NULL; | |
1209 | state->job = NULL; | |
1210 | return; | |
1211 | } | |
1212 | ||
1213 | state->bs = bdrv_find(backup->device); | |
1214 | state->job = state->bs->job; | |
1215 | } | |
1216 | ||
1217 | static void drive_backup_abort(BlkTransactionState *common) | |
1218 | { | |
1219 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1220 | BlockDriverState *bs = state->bs; | |
1221 | ||
1222 | /* Only cancel if it's the job we started */ | |
1223 | if (bs && bs->job && bs->job == state->job) { | |
1224 | block_job_cancel_sync(bs->job); | |
1225 | } | |
1226 | } | |
1227 | ||
78b18b78 SH |
1228 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1229 | { | |
1230 | error_setg(errp, "Transaction aborted using Abort action"); | |
1231 | } | |
1232 | ||
1233 | static void abort_commit(BlkTransactionState *common) | |
1234 | { | |
dfc6f865 | 1235 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1236 | } |
1237 | ||
ba0c86a3 | 1238 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1239 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1240 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1241 | .prepare = external_snapshot_prepare, |
1242 | .commit = external_snapshot_commit, | |
1243 | .abort = external_snapshot_abort, | |
1244 | }, | |
3037f364 SH |
1245 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1246 | .instance_size = sizeof(DriveBackupState), | |
1247 | .prepare = drive_backup_prepare, | |
1248 | .abort = drive_backup_abort, | |
1249 | }, | |
78b18b78 SH |
1250 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1251 | .instance_size = sizeof(BlkTransactionState), | |
1252 | .prepare = abort_prepare, | |
1253 | .commit = abort_commit, | |
1254 | }, | |
bbe86010 WX |
1255 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
1256 | .instance_size = sizeof(InternalSnapshotState), | |
1257 | .prepare = internal_snapshot_prepare, | |
1258 | .abort = internal_snapshot_abort, | |
1259 | }, | |
ba0c86a3 WX |
1260 | }; |
1261 | ||
8802d1fd JC |
1262 | /* |
1263 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1264 | * then we do not pivot any of the devices in the group, and abandon the | |
1265 | * snapshots | |
1266 | */ | |
c8a83e85 | 1267 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1268 | { |
c8a83e85 | 1269 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1270 | BlkTransactionState *state, *next; |
43e17041 | 1271 | Error *local_err = NULL; |
8802d1fd | 1272 | |
ba5d6ab6 | 1273 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1274 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1275 | ||
1276 | /* drain all i/o before any snapshots */ | |
1277 | bdrv_drain_all(); | |
1278 | ||
1279 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1280 | while (NULL != dev_entry) { | |
c8a83e85 | 1281 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1282 | const BdrvActionOps *ops; |
52e7c241 | 1283 | |
8802d1fd JC |
1284 | dev_info = dev_entry->value; |
1285 | dev_entry = dev_entry->next; | |
1286 | ||
ba0c86a3 WX |
1287 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1288 | ||
1289 | ops = &actions[dev_info->kind]; | |
aa3fe714 MR |
1290 | assert(ops->instance_size > 0); |
1291 | ||
ba5d6ab6 SH |
1292 | state = g_malloc0(ops->instance_size); |
1293 | state->ops = ops; | |
1294 | state->action = dev_info; | |
1295 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1296 | |
ba5d6ab6 | 1297 | state->ops->prepare(state, &local_err); |
ba0c86a3 WX |
1298 | if (error_is_set(&local_err)) { |
1299 | error_propagate(errp, local_err); | |
1300 | goto delete_and_fail; | |
8802d1fd | 1301 | } |
8802d1fd JC |
1302 | } |
1303 | ||
ba5d6ab6 | 1304 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1305 | if (state->ops->commit) { |
1306 | state->ops->commit(state); | |
1307 | } | |
8802d1fd JC |
1308 | } |
1309 | ||
1310 | /* success */ | |
1311 | goto exit; | |
1312 | ||
1313 | delete_and_fail: | |
1314 | /* | |
1315 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1316 | * the original bs for all images | |
1317 | */ | |
ba5d6ab6 SH |
1318 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1319 | if (state->ops->abort) { | |
1320 | state->ops->abort(state); | |
ba0c86a3 | 1321 | } |
8802d1fd JC |
1322 | } |
1323 | exit: | |
ba5d6ab6 SH |
1324 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1325 | if (state->ops->clean) { | |
1326 | state->ops->clean(state); | |
ba0c86a3 | 1327 | } |
ba5d6ab6 | 1328 | g_free(state); |
8802d1fd | 1329 | } |
8802d1fd JC |
1330 | } |
1331 | ||
1332 | ||
92d48558 | 1333 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1334 | { |
2d3735d3 SH |
1335 | if (bdrv_in_use(bs)) { |
1336 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
1337 | return; | |
1338 | } | |
2c6942fa | 1339 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
1340 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
1341 | return; | |
ea8f942f | 1342 | } |
92d48558 | 1343 | |
025ccaa7 PB |
1344 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1345 | bdrv_dev_eject_request(bs, force); | |
1346 | if (!force) { | |
92d48558 LC |
1347 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
1348 | return; | |
025ccaa7 | 1349 | } |
666daa68 | 1350 | } |
92d48558 | 1351 | |
3b5276b5 | 1352 | bdrv_close(bs); |
666daa68 MA |
1353 | } |
1354 | ||
c245b6a3 | 1355 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1356 | { |
1357 | BlockDriverState *bs; | |
666daa68 | 1358 | |
c245b6a3 | 1359 | bs = bdrv_find(device); |
666daa68 | 1360 | if (!bs) { |
c245b6a3 LC |
1361 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1362 | return; | |
92d48558 LC |
1363 | } |
1364 | ||
c245b6a3 | 1365 | eject_device(bs, force, errp); |
666daa68 MA |
1366 | } |
1367 | ||
a4dea8a9 | 1368 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
1369 | { |
1370 | BlockDriverState *bs; | |
1371 | int err; | |
1372 | ||
a4dea8a9 | 1373 | bs = bdrv_find(device); |
666daa68 | 1374 | if (!bs) { |
a4dea8a9 LC |
1375 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1376 | return; | |
666daa68 MA |
1377 | } |
1378 | ||
a4dea8a9 | 1379 | err = bdrv_set_key(bs, password); |
666daa68 | 1380 | if (err == -EINVAL) { |
a4dea8a9 LC |
1381 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1382 | return; | |
666daa68 | 1383 | } else if (err < 0) { |
a4dea8a9 LC |
1384 | error_set(errp, QERR_INVALID_PASSWORD); |
1385 | return; | |
666daa68 | 1386 | } |
666daa68 MA |
1387 | } |
1388 | ||
333a96ec LC |
1389 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1390 | int bdrv_flags, BlockDriver *drv, | |
1391 | const char *password, Error **errp) | |
1392 | { | |
34b5d2c6 | 1393 | Error *local_err = NULL; |
0eef407c LC |
1394 | int ret; |
1395 | ||
34b5d2c6 | 1396 | ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv, &local_err); |
0eef407c | 1397 | if (ret < 0) { |
34b5d2c6 | 1398 | error_propagate(errp, local_err); |
333a96ec LC |
1399 | return; |
1400 | } | |
1401 | ||
1402 | if (bdrv_key_required(bs)) { | |
1403 | if (password) { | |
1404 | if (bdrv_set_key(bs, password) < 0) { | |
1405 | error_set(errp, QERR_INVALID_PASSWORD); | |
1406 | } | |
1407 | } else { | |
1408 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1409 | bdrv_get_encrypted_filename(bs)); | |
1410 | } | |
1411 | } else if (password) { | |
1412 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | void qmp_change_blockdev(const char *device, const char *filename, | |
1417 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
1418 | { |
1419 | BlockDriverState *bs; | |
1420 | BlockDriver *drv = NULL; | |
1421 | int bdrv_flags; | |
92d48558 | 1422 | Error *err = NULL; |
666daa68 MA |
1423 | |
1424 | bs = bdrv_find(device); | |
1425 | if (!bs) { | |
333a96ec LC |
1426 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1427 | return; | |
666daa68 | 1428 | } |
333a96ec LC |
1429 | |
1430 | if (format) { | |
b64ec4e4 | 1431 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1432 | if (!drv) { |
333a96ec LC |
1433 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1434 | return; | |
666daa68 MA |
1435 | } |
1436 | } | |
333a96ec | 1437 | |
92d48558 LC |
1438 | eject_device(bs, 0, &err); |
1439 | if (error_is_set(&err)) { | |
333a96ec LC |
1440 | error_propagate(errp, err); |
1441 | return; | |
666daa68 | 1442 | } |
333a96ec | 1443 | |
528f7663 | 1444 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1445 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1446 | |
1447 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1448 | } |
9063f814 | 1449 | |
727f005e | 1450 | /* throttling disk I/O limits */ |
80047da5 | 1451 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1452 | int64_t bps_wr, |
1453 | int64_t iops, | |
1454 | int64_t iops_rd, | |
1455 | int64_t iops_wr, | |
1456 | bool has_bps_max, | |
1457 | int64_t bps_max, | |
1458 | bool has_bps_rd_max, | |
1459 | int64_t bps_rd_max, | |
1460 | bool has_bps_wr_max, | |
1461 | int64_t bps_wr_max, | |
1462 | bool has_iops_max, | |
1463 | int64_t iops_max, | |
1464 | bool has_iops_rd_max, | |
1465 | int64_t iops_rd_max, | |
1466 | bool has_iops_wr_max, | |
2024c1df BC |
1467 | int64_t iops_wr_max, |
1468 | bool has_iops_size, | |
1469 | int64_t iops_size, Error **errp) | |
727f005e | 1470 | { |
cc0681c4 | 1471 | ThrottleConfig cfg; |
727f005e ZYW |
1472 | BlockDriverState *bs; |
1473 | ||
80047da5 | 1474 | bs = bdrv_find(device); |
727f005e | 1475 | if (!bs) { |
80047da5 LC |
1476 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1477 | return; | |
727f005e ZYW |
1478 | } |
1479 | ||
cc0681c4 BC |
1480 | memset(&cfg, 0, sizeof(cfg)); |
1481 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1482 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1483 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1484 | ||
1485 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1486 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1487 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1488 | ||
3e9fab69 BC |
1489 | if (has_bps_max) { |
1490 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1491 | } | |
1492 | if (has_bps_rd_max) { | |
1493 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1494 | } | |
1495 | if (has_bps_wr_max) { | |
1496 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1497 | } | |
1498 | if (has_iops_max) { | |
1499 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1500 | } | |
1501 | if (has_iops_rd_max) { | |
1502 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1503 | } | |
1504 | if (has_iops_wr_max) { | |
1505 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1506 | } | |
727f005e | 1507 | |
2024c1df BC |
1508 | if (has_iops_size) { |
1509 | cfg.op_size = iops_size; | |
1510 | } | |
cc0681c4 BC |
1511 | |
1512 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1513 | return; |
727f005e ZYW |
1514 | } |
1515 | ||
cc0681c4 | 1516 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1517 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1518 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1519 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1520 | } |
1521 | ||
1522 | if (bs->io_limits_enabled) { | |
1523 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1524 | } |
727f005e ZYW |
1525 | } |
1526 | ||
9063f814 RH |
1527 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1528 | { | |
1529 | const char *id = qdict_get_str(qdict, "id"); | |
1530 | BlockDriverState *bs; | |
9063f814 RH |
1531 | |
1532 | bs = bdrv_find(id); | |
1533 | if (!bs) { | |
1534 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1535 | return -1; | |
1536 | } | |
8591675f MT |
1537 | if (bdrv_in_use(bs)) { |
1538 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1539 | return -1; | |
1540 | } | |
9063f814 RH |
1541 | |
1542 | /* quiesce block driver; prevent further io */ | |
922453bc | 1543 | bdrv_drain_all(); |
9063f814 RH |
1544 | bdrv_flush(bs); |
1545 | bdrv_close(bs); | |
1546 | ||
fa879d62 | 1547 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1548 | * then we need to make the drive anonymous until the device |
1549 | * can be removed. If this is a drive with no device backing | |
1550 | * then we can just get rid of the block driver state right here. | |
1551 | */ | |
fa879d62 | 1552 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1553 | bdrv_make_anon(bs); |
293c51a6 SH |
1554 | |
1555 | /* Further I/O must not pause the guest */ | |
1556 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1557 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 RH |
1558 | } else { |
1559 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1560 | } |
1561 | ||
9063f814 RH |
1562 | return 0; |
1563 | } | |
6d4a2b3a | 1564 | |
5e7caacb | 1565 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1566 | { |
6d4a2b3a | 1567 | BlockDriverState *bs; |
8732901e | 1568 | int ret; |
6d4a2b3a CH |
1569 | |
1570 | bs = bdrv_find(device); | |
1571 | if (!bs) { | |
5e7caacb LC |
1572 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1573 | return; | |
6d4a2b3a CH |
1574 | } |
1575 | ||
1576 | if (size < 0) { | |
939a1cc3 | 1577 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1578 | return; |
6d4a2b3a CH |
1579 | } |
1580 | ||
92b7a08d PL |
1581 | /* complete all in-flight operations before resizing the device */ |
1582 | bdrv_drain_all(); | |
1583 | ||
8732901e KW |
1584 | ret = bdrv_truncate(bs, size); |
1585 | switch (ret) { | |
939a1cc3 SH |
1586 | case 0: |
1587 | break; | |
1588 | case -ENOMEDIUM: | |
1589 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1590 | break; | |
1591 | case -ENOTSUP: | |
1592 | error_set(errp, QERR_UNSUPPORTED); | |
1593 | break; | |
1594 | case -EACCES: | |
1595 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1596 | break; | |
1597 | case -EBUSY: | |
1598 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1599 | break; | |
1600 | default: | |
8732901e | 1601 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1602 | break; |
6d4a2b3a | 1603 | } |
6d4a2b3a | 1604 | } |
12bd451f | 1605 | |
9abf2dba | 1606 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1607 | { |
1608 | BlockDriverState *bs = opaque; | |
1609 | QObject *obj; | |
1610 | ||
9abf2dba | 1611 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1612 | |
1613 | assert(bs->job); | |
1614 | obj = qobject_from_block_job(bs->job); | |
1615 | if (ret < 0) { | |
1616 | QDict *dict = qobject_to_qdict(obj); | |
1617 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1618 | } | |
1619 | ||
370521a1 SH |
1620 | if (block_job_is_cancelled(bs->job)) { |
1621 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1622 | } else { | |
1623 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1624 | } | |
12bd451f | 1625 | qobject_decref(obj); |
aa398a5c | 1626 | |
fa510ebf | 1627 | bdrv_put_ref_bh_schedule(bs); |
12bd451f SH |
1628 | } |
1629 | ||
1630 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1631 | const char *base, bool has_speed, int64_t speed, |
1632 | bool has_on_error, BlockdevOnError on_error, | |
1633 | Error **errp) | |
12bd451f SH |
1634 | { |
1635 | BlockDriverState *bs; | |
c8c3080f | 1636 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1637 | Error *local_err = NULL; |
12bd451f | 1638 | |
1d809098 PB |
1639 | if (!has_on_error) { |
1640 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1641 | } | |
1642 | ||
12bd451f SH |
1643 | bs = bdrv_find(device); |
1644 | if (!bs) { | |
1645 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1646 | return; | |
1647 | } | |
1648 | ||
12bd451f | 1649 | if (base) { |
c8c3080f MT |
1650 | base_bs = bdrv_find_backing_image(bs, base); |
1651 | if (base_bs == NULL) { | |
1652 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1653 | return; | |
1654 | } | |
12bd451f SH |
1655 | } |
1656 | ||
c83c66c3 | 1657 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1658 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1659 | if (error_is_set(&local_err)) { |
1660 | error_propagate(errp, local_err); | |
1661 | return; | |
12bd451f SH |
1662 | } |
1663 | ||
1664 | trace_qmp_block_stream(bs, bs->job); | |
1665 | } | |
2d47c6e9 | 1666 | |
ed61fc10 JC |
1667 | void qmp_block_commit(const char *device, |
1668 | bool has_base, const char *base, const char *top, | |
1669 | bool has_speed, int64_t speed, | |
1670 | Error **errp) | |
1671 | { | |
1672 | BlockDriverState *bs; | |
1673 | BlockDriverState *base_bs, *top_bs; | |
1674 | Error *local_err = NULL; | |
1675 | /* This will be part of the QMP command, if/when the | |
1676 | * BlockdevOnError change for blkmirror makes it in | |
1677 | */ | |
92aa5c6d | 1678 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1679 | |
1680 | /* drain all i/o before commits */ | |
1681 | bdrv_drain_all(); | |
1682 | ||
1683 | bs = bdrv_find(device); | |
1684 | if (!bs) { | |
1685 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1686 | return; | |
1687 | } | |
ed61fc10 JC |
1688 | |
1689 | /* default top_bs is the active layer */ | |
1690 | top_bs = bs; | |
1691 | ||
1692 | if (top) { | |
1693 | if (strcmp(bs->filename, top) != 0) { | |
1694 | top_bs = bdrv_find_backing_image(bs, top); | |
1695 | } | |
1696 | } | |
1697 | ||
1698 | if (top_bs == NULL) { | |
1699 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1700 | return; | |
1701 | } | |
1702 | ||
d5208c45 JC |
1703 | if (has_base && base) { |
1704 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1705 | } else { | |
1706 | base_bs = bdrv_find_base(top_bs); | |
1707 | } | |
1708 | ||
1709 | if (base_bs == NULL) { | |
1710 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1711 | return; | |
1712 | } | |
1713 | ||
ed61fc10 JC |
1714 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1715 | &local_err); | |
1716 | if (local_err != NULL) { | |
1717 | error_propagate(errp, local_err); | |
1718 | return; | |
1719 | } | |
ed61fc10 JC |
1720 | } |
1721 | ||
99a9addf SH |
1722 | void qmp_drive_backup(const char *device, const char *target, |
1723 | bool has_format, const char *format, | |
b53169ea | 1724 | enum MirrorSyncMode sync, |
99a9addf SH |
1725 | bool has_mode, enum NewImageMode mode, |
1726 | bool has_speed, int64_t speed, | |
1727 | bool has_on_source_error, BlockdevOnError on_source_error, | |
1728 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1729 | Error **errp) | |
1730 | { | |
1731 | BlockDriverState *bs; | |
1732 | BlockDriverState *target_bs; | |
fc5d3f84 | 1733 | BlockDriverState *source = NULL; |
99a9addf SH |
1734 | BlockDriver *drv = NULL; |
1735 | Error *local_err = NULL; | |
1736 | int flags; | |
1737 | int64_t size; | |
1738 | int ret; | |
1739 | ||
1740 | if (!has_speed) { | |
1741 | speed = 0; | |
1742 | } | |
1743 | if (!has_on_source_error) { | |
1744 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1745 | } | |
1746 | if (!has_on_target_error) { | |
1747 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1748 | } | |
1749 | if (!has_mode) { | |
1750 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1751 | } | |
1752 | ||
1753 | bs = bdrv_find(device); | |
1754 | if (!bs) { | |
1755 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1756 | return; | |
1757 | } | |
1758 | ||
1759 | if (!bdrv_is_inserted(bs)) { | |
1760 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1761 | return; | |
1762 | } | |
1763 | ||
1764 | if (!has_format) { | |
1765 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1766 | } | |
1767 | if (format) { | |
1768 | drv = bdrv_find_format(format); | |
1769 | if (!drv) { | |
1770 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1771 | return; | |
1772 | } | |
1773 | } | |
1774 | ||
1775 | if (bdrv_in_use(bs)) { | |
1776 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1777 | return; | |
1778 | } | |
1779 | ||
1780 | flags = bs->open_flags | BDRV_O_RDWR; | |
1781 | ||
fc5d3f84 IM |
1782 | /* See if we have a backing HD we can use to create our new image |
1783 | * on top of. */ | |
1784 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
1785 | source = bs->backing_hd; | |
1786 | if (!source) { | |
1787 | sync = MIRROR_SYNC_MODE_FULL; | |
1788 | } | |
1789 | } | |
1790 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
1791 | source = bs; | |
1792 | } | |
1793 | ||
99a9addf SH |
1794 | size = bdrv_getlength(bs); |
1795 | if (size < 0) { | |
1796 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1797 | return; | |
1798 | } | |
1799 | ||
1800 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1801 | assert(format && drv); | |
fc5d3f84 IM |
1802 | if (source) { |
1803 | bdrv_img_create(target, format, source->filename, | |
1804 | source->drv->format_name, NULL, | |
1805 | size, flags, &local_err, false); | |
1806 | } else { | |
1807 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
1808 | size, flags, &local_err, false); | |
1809 | } | |
99a9addf SH |
1810 | } |
1811 | ||
1812 | if (error_is_set(&local_err)) { | |
1813 | error_propagate(errp, local_err); | |
1814 | return; | |
1815 | } | |
1816 | ||
1817 | target_bs = bdrv_new(""); | |
34b5d2c6 | 1818 | ret = bdrv_open(target_bs, target, NULL, flags, drv, &local_err); |
99a9addf | 1819 | if (ret < 0) { |
4f6fd349 | 1820 | bdrv_unref(target_bs); |
34b5d2c6 | 1821 | error_propagate(errp, local_err); |
99a9addf SH |
1822 | return; |
1823 | } | |
1824 | ||
fc5d3f84 | 1825 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
1826 | block_job_cb, bs, &local_err); |
1827 | if (local_err != NULL) { | |
4f6fd349 | 1828 | bdrv_unref(target_bs); |
99a9addf SH |
1829 | error_propagate(errp, local_err); |
1830 | return; | |
1831 | } | |
99a9addf SH |
1832 | } |
1833 | ||
08e4ed6c PB |
1834 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1835 | ||
d9b902db PB |
1836 | void qmp_drive_mirror(const char *device, const char *target, |
1837 | bool has_format, const char *format, | |
1838 | enum MirrorSyncMode sync, | |
1839 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1840 | bool has_speed, int64_t speed, |
eee13dfe | 1841 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1842 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1843 | bool has_on_source_error, BlockdevOnError on_source_error, |
1844 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1845 | Error **errp) | |
d9b902db | 1846 | { |
d9b902db PB |
1847 | BlockDriverState *bs; |
1848 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
1849 | BlockDriver *drv = NULL; |
1850 | Error *local_err = NULL; | |
1851 | int flags; | |
ac3c5d83 | 1852 | int64_t size; |
d9b902db PB |
1853 | int ret; |
1854 | ||
1855 | if (!has_speed) { | |
1856 | speed = 0; | |
1857 | } | |
b952b558 PB |
1858 | if (!has_on_source_error) { |
1859 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1860 | } | |
1861 | if (!has_on_target_error) { | |
1862 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1863 | } | |
d9b902db PB |
1864 | if (!has_mode) { |
1865 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1866 | } | |
eee13dfe PB |
1867 | if (!has_granularity) { |
1868 | granularity = 0; | |
1869 | } | |
08e4ed6c PB |
1870 | if (!has_buf_size) { |
1871 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1872 | } | |
1873 | ||
eee13dfe PB |
1874 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1875 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1876 | return; | |
1877 | } | |
1878 | if (granularity & (granularity - 1)) { | |
1879 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1880 | return; | |
1881 | } | |
d9b902db PB |
1882 | |
1883 | bs = bdrv_find(device); | |
1884 | if (!bs) { | |
1885 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1886 | return; | |
1887 | } | |
1888 | ||
1889 | if (!bdrv_is_inserted(bs)) { | |
1890 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1891 | return; | |
1892 | } | |
1893 | ||
1894 | if (!has_format) { | |
1895 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1896 | } | |
1897 | if (format) { | |
1898 | drv = bdrv_find_format(format); | |
1899 | if (!drv) { | |
1900 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1901 | return; | |
1902 | } | |
1903 | } | |
1904 | ||
1905 | if (bdrv_in_use(bs)) { | |
1906 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1907 | return; | |
1908 | } | |
1909 | ||
1910 | flags = bs->open_flags | BDRV_O_RDWR; | |
1911 | source = bs->backing_hd; | |
1912 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
1913 | sync = MIRROR_SYNC_MODE_FULL; | |
1914 | } | |
1915 | ||
ac3c5d83 SH |
1916 | size = bdrv_getlength(bs); |
1917 | if (size < 0) { | |
1918 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1919 | return; | |
1920 | } | |
1921 | ||
d9b902db PB |
1922 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
1923 | /* create new image w/o backing file */ | |
1924 | assert(format && drv); | |
cf8f2426 | 1925 | bdrv_img_create(target, format, |
f382d43a | 1926 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
1927 | } else { |
1928 | switch (mode) { | |
1929 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
1930 | break; |
1931 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
1932 | /* create new image with backing file */ | |
cf8f2426 LC |
1933 | bdrv_img_create(target, format, |
1934 | source->filename, | |
1935 | source->drv->format_name, | |
f382d43a | 1936 | NULL, size, flags, &local_err, false); |
d9b902db PB |
1937 | break; |
1938 | default: | |
1939 | abort(); | |
1940 | } | |
1941 | } | |
1942 | ||
cf8f2426 LC |
1943 | if (error_is_set(&local_err)) { |
1944 | error_propagate(errp, local_err); | |
d9b902db PB |
1945 | return; |
1946 | } | |
1947 | ||
b812f671 PB |
1948 | /* Mirroring takes care of copy-on-write using the source's backing |
1949 | * file. | |
1950 | */ | |
d9b902db | 1951 | target_bs = bdrv_new(""); |
34b5d2c6 MR |
1952 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv, |
1953 | &local_err); | |
d9b902db | 1954 | if (ret < 0) { |
4f6fd349 | 1955 | bdrv_unref(target_bs); |
34b5d2c6 | 1956 | error_propagate(errp, local_err); |
d9b902db PB |
1957 | return; |
1958 | } | |
1959 | ||
08e4ed6c | 1960 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 1961 | on_source_error, on_target_error, |
b952b558 | 1962 | block_job_cb, bs, &local_err); |
d9b902db | 1963 | if (local_err != NULL) { |
4f6fd349 | 1964 | bdrv_unref(target_bs); |
d9b902db PB |
1965 | error_propagate(errp, local_err); |
1966 | return; | |
1967 | } | |
d9b902db PB |
1968 | } |
1969 | ||
2d47c6e9 SH |
1970 | static BlockJob *find_block_job(const char *device) |
1971 | { | |
1972 | BlockDriverState *bs; | |
1973 | ||
1974 | bs = bdrv_find(device); | |
1975 | if (!bs || !bs->job) { | |
1976 | return NULL; | |
1977 | } | |
1978 | return bs->job; | |
1979 | } | |
1980 | ||
882ec7ce | 1981 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
1982 | { |
1983 | BlockJob *job = find_block_job(device); | |
1984 | ||
1985 | if (!job) { | |
7ef15070 | 1986 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
1987 | return; |
1988 | } | |
1989 | ||
882ec7ce | 1990 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 1991 | } |
370521a1 | 1992 | |
6e37fb81 PB |
1993 | void qmp_block_job_cancel(const char *device, |
1994 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
1995 | { |
1996 | BlockJob *job = find_block_job(device); | |
1997 | ||
6e37fb81 PB |
1998 | if (!has_force) { |
1999 | force = false; | |
2000 | } | |
2001 | ||
370521a1 | 2002 | if (!job) { |
7ef15070 | 2003 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
2004 | return; |
2005 | } | |
6e37fb81 | 2006 | if (job->paused && !force) { |
8acc72a4 PB |
2007 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
2008 | return; | |
2009 | } | |
370521a1 SH |
2010 | |
2011 | trace_qmp_block_job_cancel(job); | |
2012 | block_job_cancel(job); | |
2013 | } | |
fb5458cd | 2014 | |
6e37fb81 PB |
2015 | void qmp_block_job_pause(const char *device, Error **errp) |
2016 | { | |
2017 | BlockJob *job = find_block_job(device); | |
2018 | ||
2019 | if (!job) { | |
2020 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2021 | return; | |
2022 | } | |
2023 | ||
2024 | trace_qmp_block_job_pause(job); | |
2025 | block_job_pause(job); | |
2026 | } | |
2027 | ||
2028 | void qmp_block_job_resume(const char *device, Error **errp) | |
2029 | { | |
2030 | BlockJob *job = find_block_job(device); | |
2031 | ||
2032 | if (!job) { | |
2033 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2034 | return; | |
2035 | } | |
2036 | ||
2037 | trace_qmp_block_job_resume(job); | |
2038 | block_job_resume(job); | |
2039 | } | |
2040 | ||
aeae883b PB |
2041 | void qmp_block_job_complete(const char *device, Error **errp) |
2042 | { | |
2043 | BlockJob *job = find_block_job(device); | |
2044 | ||
2045 | if (!job) { | |
2046 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2047 | return; | |
2048 | } | |
2049 | ||
2050 | trace_qmp_block_job_complete(job); | |
2051 | block_job_complete(job, errp); | |
2052 | } | |
2053 | ||
fb5458cd SH |
2054 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
2055 | { | |
2056 | BlockJobInfoList **prev = opaque; | |
2057 | BlockJob *job = bs->job; | |
2058 | ||
2059 | if (job) { | |
30e628b7 PB |
2060 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
2061 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
2062 | (*prev)->next = elem; |
2063 | *prev = elem; | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
2068 | { | |
2069 | /* Dummy is a fake list element for holding the head pointer */ | |
2070 | BlockJobInfoList dummy = {}; | |
2071 | BlockJobInfoList *prev = &dummy; | |
2072 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
2073 | return dummy.next; | |
2074 | } | |
4d454574 | 2075 | |
0006383e | 2076 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 2077 | .name = "drive", |
0006383e | 2078 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
2079 | .desc = { |
2080 | { | |
2081 | .name = "bus", | |
2082 | .type = QEMU_OPT_NUMBER, | |
2083 | .help = "bus number", | |
2084 | },{ | |
2085 | .name = "unit", | |
2086 | .type = QEMU_OPT_NUMBER, | |
2087 | .help = "unit number (i.e. lun for scsi)", | |
2088 | },{ | |
2089 | .name = "if", | |
2090 | .type = QEMU_OPT_STRING, | |
2091 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
2092 | },{ | |
2093 | .name = "index", | |
2094 | .type = QEMU_OPT_NUMBER, | |
2095 | .help = "index number", | |
2096 | },{ | |
2097 | .name = "cyls", | |
2098 | .type = QEMU_OPT_NUMBER, | |
2099 | .help = "number of cylinders (ide disk geometry)", | |
2100 | },{ | |
2101 | .name = "heads", | |
2102 | .type = QEMU_OPT_NUMBER, | |
2103 | .help = "number of heads (ide disk geometry)", | |
2104 | },{ | |
2105 | .name = "secs", | |
2106 | .type = QEMU_OPT_NUMBER, | |
2107 | .help = "number of sectors (ide disk geometry)", | |
2108 | },{ | |
2109 | .name = "trans", | |
2110 | .type = QEMU_OPT_STRING, | |
2111 | .help = "chs translation (auto, lba. none)", | |
2112 | },{ | |
2113 | .name = "media", | |
2114 | .type = QEMU_OPT_STRING, | |
2115 | .help = "media type (disk, cdrom)", | |
2116 | },{ | |
2117 | .name = "snapshot", | |
2118 | .type = QEMU_OPT_BOOL, | |
2119 | .help = "enable/disable snapshot mode", | |
2120 | },{ | |
2121 | .name = "file", | |
2122 | .type = QEMU_OPT_STRING, | |
2123 | .help = "disk image", | |
a9384aff PB |
2124 | },{ |
2125 | .name = "discard", | |
2126 | .type = QEMU_OPT_STRING, | |
2127 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 2128 | },{ |
29c4e2b5 KW |
2129 | .name = "cache.writeback", |
2130 | .type = QEMU_OPT_BOOL, | |
2131 | .help = "enables writeback mode for any caches", | |
2132 | },{ | |
2133 | .name = "cache.direct", | |
2134 | .type = QEMU_OPT_BOOL, | |
2135 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
2136 | },{ | |
2137 | .name = "cache.no-flush", | |
2138 | .type = QEMU_OPT_BOOL, | |
2139 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
2140 | },{ |
2141 | .name = "aio", | |
2142 | .type = QEMU_OPT_STRING, | |
2143 | .help = "host AIO implementation (threads, native)", | |
2144 | },{ | |
2145 | .name = "format", | |
2146 | .type = QEMU_OPT_STRING, | |
2147 | .help = "disk format (raw, qcow2, ...)", | |
2148 | },{ | |
2149 | .name = "serial", | |
2150 | .type = QEMU_OPT_STRING, | |
2151 | .help = "disk serial number", | |
2152 | },{ | |
2153 | .name = "rerror", | |
2154 | .type = QEMU_OPT_STRING, | |
2155 | .help = "read error action", | |
2156 | },{ | |
2157 | .name = "werror", | |
2158 | .type = QEMU_OPT_STRING, | |
2159 | .help = "write error action", | |
2160 | },{ | |
2161 | .name = "addr", | |
2162 | .type = QEMU_OPT_STRING, | |
2163 | .help = "pci address (virtio only)", | |
2164 | },{ | |
0f227a94 | 2165 | .name = "read-only", |
4d454574 PB |
2166 | .type = QEMU_OPT_BOOL, |
2167 | .help = "open drive file as read-only", | |
2168 | },{ | |
57975222 | 2169 | .name = "throttling.iops-total", |
4d454574 PB |
2170 | .type = QEMU_OPT_NUMBER, |
2171 | .help = "limit total I/O operations per second", | |
2172 | },{ | |
57975222 | 2173 | .name = "throttling.iops-read", |
4d454574 PB |
2174 | .type = QEMU_OPT_NUMBER, |
2175 | .help = "limit read operations per second", | |
2176 | },{ | |
57975222 | 2177 | .name = "throttling.iops-write", |
4d454574 PB |
2178 | .type = QEMU_OPT_NUMBER, |
2179 | .help = "limit write operations per second", | |
2180 | },{ | |
57975222 | 2181 | .name = "throttling.bps-total", |
4d454574 PB |
2182 | .type = QEMU_OPT_NUMBER, |
2183 | .help = "limit total bytes per second", | |
2184 | },{ | |
57975222 | 2185 | .name = "throttling.bps-read", |
4d454574 PB |
2186 | .type = QEMU_OPT_NUMBER, |
2187 | .help = "limit read bytes per second", | |
2188 | },{ | |
57975222 | 2189 | .name = "throttling.bps-write", |
4d454574 PB |
2190 | .type = QEMU_OPT_NUMBER, |
2191 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2192 | },{ |
2193 | .name = "throttling.iops-total-max", | |
2194 | .type = QEMU_OPT_NUMBER, | |
2195 | .help = "I/O operations burst", | |
2196 | },{ | |
2197 | .name = "throttling.iops-read-max", | |
2198 | .type = QEMU_OPT_NUMBER, | |
2199 | .help = "I/O operations read burst", | |
2200 | },{ | |
2201 | .name = "throttling.iops-write-max", | |
2202 | .type = QEMU_OPT_NUMBER, | |
2203 | .help = "I/O operations write burst", | |
2204 | },{ | |
2205 | .name = "throttling.bps-total-max", | |
2206 | .type = QEMU_OPT_NUMBER, | |
2207 | .help = "total bytes burst", | |
2208 | },{ | |
2209 | .name = "throttling.bps-read-max", | |
2210 | .type = QEMU_OPT_NUMBER, | |
2211 | .help = "total bytes read burst", | |
2212 | },{ | |
2213 | .name = "throttling.bps-write-max", | |
2214 | .type = QEMU_OPT_NUMBER, | |
2215 | .help = "total bytes write burst", | |
2024c1df BC |
2216 | },{ |
2217 | .name = "throttling.iops-size", | |
2218 | .type = QEMU_OPT_NUMBER, | |
2219 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2220 | },{ |
2221 | .name = "copy-on-read", | |
2222 | .type = QEMU_OPT_BOOL, | |
2223 | .help = "copy read data from backing file into image file", | |
2224 | },{ | |
2225 | .name = "boot", | |
2226 | .type = QEMU_OPT_BOOL, | |
2227 | .help = "(deprecated, ignored)", | |
2228 | }, | |
2229 | { /* end of list */ } | |
2230 | }, | |
2231 | }; | |
0006383e KW |
2232 | |
2233 | QemuOptsList qemu_drive_opts = { | |
2234 | .name = "drive", | |
2235 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2236 | .desc = { | |
492fdc6f KW |
2237 | /* |
2238 | * no elements => accept any params | |
2239 | * validation will happen later | |
2240 | */ | |
0006383e KW |
2241 | { /* end of list */ } |
2242 | }, | |
2243 | }; |