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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" |
1de7afc9 PB |
37 | #include "qemu/option.h" |
38 | #include "qemu/config-file.h" | |
7b1b5d19 | 39 | #include "qapi/qmp/types.h" |
d26c9a15 KW |
40 | #include "qapi-visit.h" |
41 | #include "qapi/qmp-output-visitor.h" | |
9e7dac7c | 42 | #include "qapi/util.h" |
9c17d615 | 43 | #include "sysemu/sysemu.h" |
737e150e | 44 | #include "block/block_int.h" |
a4dea8a9 | 45 | #include "qmp-commands.h" |
12bd451f | 46 | #include "trace.h" |
9c17d615 | 47 | #include "sysemu/arch_init.h" |
666daa68 | 48 | |
c9b62a7e | 49 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
666daa68 | 50 | |
1960966d MA |
51 | static const char *const if_name[IF_COUNT] = { |
52 | [IF_NONE] = "none", | |
53 | [IF_IDE] = "ide", | |
54 | [IF_SCSI] = "scsi", | |
55 | [IF_FLOPPY] = "floppy", | |
56 | [IF_PFLASH] = "pflash", | |
57 | [IF_MTD] = "mtd", | |
58 | [IF_SD] = "sd", | |
59 | [IF_VIRTIO] = "virtio", | |
60 | [IF_XEN] = "xen", | |
61 | }; | |
62 | ||
63 | static const int if_max_devs[IF_COUNT] = { | |
27d6bf40 MA |
64 | /* |
65 | * Do not change these numbers! They govern how drive option | |
66 | * index maps to unit and bus. That mapping is ABI. | |
67 | * | |
68 | * All controllers used to imlement if=T drives need to support | |
69 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
70 | * Otherwise, some index values map to "impossible" bus, unit | |
71 | * values. | |
72 | * | |
73 | * For instance, if you change [IF_SCSI] to 255, -drive | |
74 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
75 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
76 | * the drive can't be set up. Regression. | |
77 | */ | |
78 | [IF_IDE] = 2, | |
79 | [IF_SCSI] = 7, | |
1960966d MA |
80 | }; |
81 | ||
14bafc54 MA |
82 | /* |
83 | * We automatically delete the drive when a device using it gets | |
84 | * unplugged. Questionable feature, but we can't just drop it. | |
85 | * Device models call blockdev_mark_auto_del() to schedule the | |
86 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
87 | * when deletion is actually safe. | |
88 | */ | |
89 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
90 | { | |
91 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
92 | ||
2d246f01 KW |
93 | if (dinfo && !dinfo->enable_auto_del) { |
94 | return; | |
95 | } | |
96 | ||
12bde0ee PB |
97 | if (bs->job) { |
98 | block_job_cancel(bs->job); | |
99 | } | |
0fc0f1fa RH |
100 | if (dinfo) { |
101 | dinfo->auto_del = 1; | |
102 | } | |
14bafc54 MA |
103 | } |
104 | ||
105 | void blockdev_auto_del(BlockDriverState *bs) | |
106 | { | |
107 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
108 | ||
0fc0f1fa | 109 | if (dinfo && dinfo->auto_del) { |
ae60e8e3 | 110 | drive_del(dinfo); |
14bafc54 MA |
111 | } |
112 | } | |
113 | ||
505a7fb1 MA |
114 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
115 | { | |
116 | int max_devs = if_max_devs[type]; | |
117 | return max_devs ? index / max_devs : 0; | |
118 | } | |
119 | ||
120 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
121 | { | |
122 | int max_devs = if_max_devs[type]; | |
123 | return max_devs ? index % max_devs : index; | |
124 | } | |
125 | ||
2292ddae MA |
126 | QemuOpts *drive_def(const char *optstr) |
127 | { | |
128 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
129 | } | |
130 | ||
131 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 132 | const char *optstr) |
666daa68 | 133 | { |
666daa68 | 134 | QemuOpts *opts; |
2292ddae | 135 | char buf[32]; |
666daa68 | 136 | |
2292ddae | 137 | opts = drive_def(optstr); |
666daa68 MA |
138 | if (!opts) { |
139 | return NULL; | |
140 | } | |
2292ddae MA |
141 | if (type != IF_DEFAULT) { |
142 | qemu_opt_set(opts, "if", if_name[type]); | |
143 | } | |
144 | if (index >= 0) { | |
145 | snprintf(buf, sizeof(buf), "%d", index); | |
146 | qemu_opt_set(opts, "index", buf); | |
147 | } | |
666daa68 MA |
148 | if (file) |
149 | qemu_opt_set(opts, "file", file); | |
150 | return opts; | |
151 | } | |
152 | ||
153 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
154 | { | |
155 | DriveInfo *dinfo; | |
156 | ||
157 | /* seek interface, bus and unit */ | |
158 | ||
159 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
160 | if (dinfo->type == type && | |
161 | dinfo->bus == bus && | |
162 | dinfo->unit == unit) | |
163 | return dinfo; | |
164 | } | |
165 | ||
166 | return NULL; | |
167 | } | |
168 | ||
f1bd51ac MA |
169 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
170 | { | |
171 | return drive_get(type, | |
172 | drive_index_to_bus_id(type, index), | |
173 | drive_index_to_unit_id(type, index)); | |
174 | } | |
175 | ||
666daa68 MA |
176 | int drive_get_max_bus(BlockInterfaceType type) |
177 | { | |
178 | int max_bus; | |
179 | DriveInfo *dinfo; | |
180 | ||
181 | max_bus = -1; | |
182 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
183 | if(dinfo->type == type && | |
184 | dinfo->bus > max_bus) | |
185 | max_bus = dinfo->bus; | |
186 | } | |
187 | return max_bus; | |
188 | } | |
189 | ||
13839974 MA |
190 | /* Get a block device. This should only be used for single-drive devices |
191 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
192 | appropriate bus. */ | |
193 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
194 | { | |
195 | static int next_block_unit[IF_COUNT]; | |
196 | ||
197 | return drive_get(type, 0, next_block_unit[type]++); | |
198 | } | |
199 | ||
e4700e59 | 200 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
201 | { |
202 | DriveInfo *dinfo; | |
203 | ||
204 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
205 | if (dinfo->bdrv == bs) { |
206 | return dinfo; | |
207 | } | |
666daa68 | 208 | } |
e4700e59 | 209 | return NULL; |
666daa68 MA |
210 | } |
211 | ||
666daa68 MA |
212 | static void bdrv_format_print(void *opaque, const char *name) |
213 | { | |
807105a7 | 214 | error_printf(" %s", name); |
666daa68 MA |
215 | } |
216 | ||
ae60e8e3 | 217 | void drive_del(DriveInfo *dinfo) |
666daa68 | 218 | { |
3ae59580 MA |
219 | bdrv_unref(dinfo->bdrv); |
220 | } | |
221 | ||
222 | void drive_info_del(DriveInfo *dinfo) | |
223 | { | |
224 | if (!dinfo) { | |
225 | return; | |
226 | } | |
f298d071 KW |
227 | if (dinfo->opts) { |
228 | qemu_opts_del(dinfo->opts); | |
229 | } | |
7267c094 | 230 | g_free(dinfo->id); |
666daa68 | 231 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 232 | g_free(dinfo->serial); |
7267c094 | 233 | g_free(dinfo); |
666daa68 MA |
234 | } |
235 | ||
aa398a5c SH |
236 | typedef struct { |
237 | QEMUBH *bh; | |
fa510ebf FZ |
238 | BlockDriverState *bs; |
239 | } BDRVPutRefBH; | |
aa398a5c | 240 | |
fa510ebf | 241 | static void bdrv_put_ref_bh(void *opaque) |
aa398a5c | 242 | { |
fa510ebf | 243 | BDRVPutRefBH *s = opaque; |
aa398a5c | 244 | |
fa510ebf | 245 | bdrv_unref(s->bs); |
aa398a5c SH |
246 | qemu_bh_delete(s->bh); |
247 | g_free(s); | |
248 | } | |
249 | ||
250 | /* | |
fa510ebf | 251 | * Release a BDS reference in a BH |
aa398a5c | 252 | * |
fa510ebf FZ |
253 | * It is not safe to use bdrv_unref() from a callback function when the callers |
254 | * still need the BlockDriverState. In such cases we schedule a BH to release | |
255 | * the reference. | |
aa398a5c | 256 | */ |
fa510ebf | 257 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
aa398a5c | 258 | { |
fa510ebf | 259 | BDRVPutRefBH *s; |
aa398a5c | 260 | |
fa510ebf FZ |
261 | s = g_new(BDRVPutRefBH, 1); |
262 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); | |
263 | s->bs = bs; | |
aa398a5c SH |
264 | qemu_bh_schedule(s->bh); |
265 | } | |
266 | ||
b681072d | 267 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
268 | { |
269 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 270 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 271 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 272 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 273 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 274 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 275 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 276 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 277 | } else { |
b681072d KW |
278 | error_setg(errp, "'%s' invalid %s error action", |
279 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
280 | return -1; |
281 | } | |
282 | } | |
283 | ||
cc0681c4 | 284 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 285 | { |
cc0681c4 BC |
286 | if (throttle_conflicting(cfg)) { |
287 | error_setg(errp, "bps/iops/max total values and read/write values" | |
288 | " cannot be used at the same time"); | |
0563e191 ZYW |
289 | return false; |
290 | } | |
291 | ||
cc0681c4 BC |
292 | if (!throttle_is_valid(cfg)) { |
293 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
294 | return false; |
295 | } | |
296 | ||
0563e191 ZYW |
297 | return true; |
298 | } | |
299 | ||
33cb7dc8 KW |
300 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
301 | ||
f298d071 | 302 | /* Takes the ownership of bs_opts */ |
d095b465 | 303 | static DriveInfo *blockdev_init(const char *file, QDict *bs_opts, |
b681072d | 304 | Error **errp) |
666daa68 MA |
305 | { |
306 | const char *buf; | |
666daa68 MA |
307 | int ro = 0; |
308 | int bdrv_flags = 0; | |
309 | int on_read_error, on_write_error; | |
a0f1eab1 | 310 | BlockDriverState *bs; |
666daa68 | 311 | DriveInfo *dinfo; |
cc0681c4 | 312 | ThrottleConfig cfg; |
666daa68 | 313 | int snapshot = 0; |
fb0490f6 | 314 | bool copy_on_read; |
666daa68 | 315 | int ret; |
c546194f | 316 | Error *error = NULL; |
0006383e | 317 | QemuOpts *opts; |
0006383e | 318 | const char *id; |
74fe54f2 | 319 | bool has_driver_specific_opts; |
465bee1d | 320 | BlockdevDetectZeroesOptions detect_zeroes; |
6db5f5d6 | 321 | BlockDriver *drv = NULL; |
666daa68 | 322 | |
f298d071 KW |
323 | /* Check common options by copying from bs_opts to opts, all other options |
324 | * stay in bs_opts for processing by bdrv_open(). */ | |
325 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 326 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 327 | if (error) { |
b681072d | 328 | error_propagate(errp, error); |
6376f952 | 329 | goto err_no_opts; |
0006383e KW |
330 | } |
331 | ||
0006383e | 332 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 333 | if (error) { |
b681072d | 334 | error_propagate(errp, error); |
ec9c10d2 | 335 | goto early_err; |
0006383e KW |
336 | } |
337 | ||
338 | if (id) { | |
339 | qdict_del(bs_opts, "id"); | |
340 | } | |
341 | ||
74fe54f2 KW |
342 | has_driver_specific_opts = !!qdict_size(bs_opts); |
343 | ||
666daa68 | 344 | /* extract parameters */ |
666daa68 | 345 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
0f227a94 | 346 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 347 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 | 348 | |
a9384aff PB |
349 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
350 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
b681072d | 351 | error_setg(errp, "invalid discard option"); |
ec9c10d2 | 352 | goto early_err; |
a9384aff PB |
353 | } |
354 | } | |
355 | ||
29c4e2b5 KW |
356 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
357 | bdrv_flags |= BDRV_O_CACHE_WB; | |
358 | } | |
359 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
360 | bdrv_flags |= BDRV_O_NOCACHE; | |
361 | } | |
1df6fa4b | 362 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
29c4e2b5 | 363 | bdrv_flags |= BDRV_O_NO_FLUSH; |
666daa68 MA |
364 | } |
365 | ||
366 | #ifdef CONFIG_LINUX_AIO | |
367 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
368 | if (!strcmp(buf, "native")) { | |
369 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
370 | } else if (!strcmp(buf, "threads")) { | |
371 | /* this is the default */ | |
372 | } else { | |
b681072d | 373 | error_setg(errp, "invalid aio option"); |
ec9c10d2 | 374 | goto early_err; |
666daa68 MA |
375 | } |
376 | } | |
377 | #endif | |
378 | ||
379 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
380 | if (is_help_option(buf)) { |
381 | error_printf("Supported formats:"); | |
382 | bdrv_iterate_format(bdrv_format_print, NULL); | |
383 | error_printf("\n"); | |
ec9c10d2 | 384 | goto early_err; |
666daa68 | 385 | } |
74fe54f2 | 386 | |
8f94a6e4 | 387 | drv = bdrv_find_format(buf); |
6db5f5d6 | 388 | if (!drv) { |
b681072d | 389 | error_setg(errp, "'%s' invalid format", buf); |
ec9c10d2 | 390 | goto early_err; |
6db5f5d6 | 391 | } |
666daa68 MA |
392 | } |
393 | ||
0563e191 | 394 | /* disk I/O throttling */ |
cc0681c4 BC |
395 | memset(&cfg, 0, sizeof(cfg)); |
396 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 397 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 398 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 399 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 400 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 401 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 402 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 403 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 404 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 405 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 406 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 407 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 408 | |
3e9fab69 BC |
409 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
410 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
411 | cfg.buckets[THROTTLE_BPS_READ].max = | |
412 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
413 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
414 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
415 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
416 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
417 | cfg.buckets[THROTTLE_OPS_READ].max = | |
418 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
419 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
420 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 421 | |
2024c1df | 422 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
423 | |
424 | if (!check_throttle_config(&cfg, &error)) { | |
b681072d | 425 | error_propagate(errp, error); |
ec9c10d2 | 426 | goto early_err; |
0563e191 ZYW |
427 | } |
428 | ||
92aa5c6d | 429 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 430 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 431 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 432 | if (error) { |
b681072d | 433 | error_propagate(errp, error); |
ec9c10d2 | 434 | goto early_err; |
666daa68 MA |
435 | } |
436 | } | |
437 | ||
92aa5c6d | 438 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 439 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 440 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 441 | if (error) { |
b681072d | 442 | error_propagate(errp, error); |
ec9c10d2 | 443 | goto early_err; |
666daa68 MA |
444 | } |
445 | } | |
446 | ||
465bee1d | 447 | detect_zeroes = |
9e7dac7c PL |
448 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, |
449 | qemu_opt_get(opts, "detect-zeroes"), | |
450 | BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX, | |
451 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, | |
452 | &error); | |
465bee1d PL |
453 | if (error) { |
454 | error_propagate(errp, error); | |
455 | goto early_err; | |
456 | } | |
457 | ||
458 | if (detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && | |
459 | !(bdrv_flags & BDRV_O_UNMAP)) { | |
460 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " | |
461 | "without setting discard operation to unmap"); | |
462 | goto early_err; | |
463 | } | |
464 | ||
326642bc | 465 | /* init */ |
a0f1eab1 MA |
466 | bs = bdrv_new(qemu_opts_id(opts), errp); |
467 | if (!bs) { | |
468 | goto early_err; | |
98522f63 | 469 | } |
a0f1eab1 MA |
470 | bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
471 | bs->read_only = ro; | |
472 | bs->detect_zeroes = detect_zeroes; | |
666daa68 | 473 | |
a0f1eab1 | 474 | bdrv_set_on_error(bs, on_read_error, on_write_error); |
abd7f68d | 475 | |
0563e191 | 476 | /* disk I/O throttling */ |
cc0681c4 | 477 | if (throttle_enabled(&cfg)) { |
a0f1eab1 MA |
478 | bdrv_io_limits_enable(bs); |
479 | bdrv_set_io_limits(bs, &cfg); | |
cc0681c4 | 480 | } |
0563e191 | 481 | |
a0f1eab1 MA |
482 | dinfo = g_malloc0(sizeof(*dinfo)); |
483 | dinfo->id = g_strdup(qemu_opts_id(opts)); | |
484 | dinfo->bdrv = bs; | |
485 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); | |
486 | ||
dd5b0d71 | 487 | if (!file || !*file) { |
74fe54f2 | 488 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
489 | file = NULL; |
490 | } else { | |
ec9c10d2 SH |
491 | QDECREF(bs_opts); |
492 | qemu_opts_del(opts); | |
c2ad1b0c KW |
493 | return dinfo; |
494 | } | |
666daa68 MA |
495 | } |
496 | if (snapshot) { | |
497 | /* always use cache=unsafe with snapshot */ | |
498 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
499 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
500 | } | |
501 | ||
fb0490f6 SH |
502 | if (copy_on_read) { |
503 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
504 | } | |
505 | ||
ed9d4205 BC |
506 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
507 | bdrv_flags |= BDRV_O_INCOMING; | |
508 | } | |
509 | ||
666daa68 MA |
510 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; |
511 | ||
74fe54f2 | 512 | QINCREF(bs_opts); |
a0f1eab1 MA |
513 | ret = bdrv_open(&bs, file, NULL, bs_opts, bdrv_flags, drv, &error); |
514 | assert(bs == dinfo->bdrv); | |
0006383e | 515 | |
666daa68 | 516 | if (ret < 0) { |
b681072d KW |
517 | error_setg(errp, "could not open disk image %s: %s", |
518 | file ?: dinfo->id, error_get_pretty(error)); | |
519 | error_free(error); | |
a9ae2bff | 520 | goto err; |
666daa68 MA |
521 | } |
522 | ||
a0f1eab1 | 523 | if (bdrv_key_required(bs)) { |
666daa68 | 524 | autostart = 0; |
a0f1eab1 | 525 | } |
0006383e | 526 | |
74fe54f2 | 527 | QDECREF(bs_opts); |
0006383e KW |
528 | qemu_opts_del(opts); |
529 | ||
666daa68 | 530 | return dinfo; |
a9ae2bff MA |
531 | |
532 | err: | |
a0f1eab1 | 533 | bdrv_unref(bs); |
ec9c10d2 | 534 | early_err: |
ec9c10d2 | 535 | qemu_opts_del(opts); |
6376f952 MA |
536 | err_no_opts: |
537 | QDECREF(bs_opts); | |
a9ae2bff | 538 | return NULL; |
666daa68 MA |
539 | } |
540 | ||
57975222 KW |
541 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
542 | { | |
543 | const char *value; | |
544 | ||
545 | value = qemu_opt_get(opts, from); | |
546 | if (value) { | |
547 | qemu_opt_set(opts, to, value); | |
548 | qemu_opt_unset(opts, from); | |
549 | } | |
550 | } | |
551 | ||
33cb7dc8 KW |
552 | QemuOptsList qemu_legacy_drive_opts = { |
553 | .name = "drive", | |
554 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
555 | .desc = { | |
556 | { | |
87a899c5 KW |
557 | .name = "bus", |
558 | .type = QEMU_OPT_NUMBER, | |
559 | .help = "bus number", | |
560 | },{ | |
561 | .name = "unit", | |
562 | .type = QEMU_OPT_NUMBER, | |
563 | .help = "unit number (i.e. lun for scsi)", | |
564 | },{ | |
565 | .name = "index", | |
566 | .type = QEMU_OPT_NUMBER, | |
567 | .help = "index number", | |
568 | },{ | |
33cb7dc8 KW |
569 | .name = "media", |
570 | .type = QEMU_OPT_STRING, | |
571 | .help = "media type (disk, cdrom)", | |
593d464b KW |
572 | },{ |
573 | .name = "if", | |
574 | .type = QEMU_OPT_STRING, | |
575 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
576 | },{ |
577 | .name = "cyls", | |
578 | .type = QEMU_OPT_NUMBER, | |
579 | .help = "number of cylinders (ide disk geometry)", | |
580 | },{ | |
581 | .name = "heads", | |
582 | .type = QEMU_OPT_NUMBER, | |
583 | .help = "number of heads (ide disk geometry)", | |
584 | },{ | |
585 | .name = "secs", | |
586 | .type = QEMU_OPT_NUMBER, | |
587 | .help = "number of sectors (ide disk geometry)", | |
588 | },{ | |
589 | .name = "trans", | |
590 | .type = QEMU_OPT_STRING, | |
591 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
592 | },{ |
593 | .name = "boot", | |
594 | .type = QEMU_OPT_BOOL, | |
595 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
596 | },{ |
597 | .name = "addr", | |
598 | .type = QEMU_OPT_STRING, | |
599 | .help = "pci address (virtio only)", | |
bcf83158 KW |
600 | },{ |
601 | .name = "serial", | |
602 | .type = QEMU_OPT_STRING, | |
603 | .help = "disk serial number", | |
d095b465 HR |
604 | },{ |
605 | .name = "file", | |
606 | .type = QEMU_OPT_STRING, | |
607 | .help = "file name", | |
33cb7dc8 | 608 | }, |
0ebd24e0 KW |
609 | |
610 | /* Options that are passed on, but have special semantics with -drive */ | |
611 | { | |
612 | .name = "read-only", | |
613 | .type = QEMU_OPT_BOOL, | |
614 | .help = "open drive file as read-only", | |
ee13ed1c KW |
615 | },{ |
616 | .name = "rerror", | |
617 | .type = QEMU_OPT_STRING, | |
618 | .help = "read error action", | |
619 | },{ | |
620 | .name = "werror", | |
621 | .type = QEMU_OPT_STRING, | |
622 | .help = "write error action", | |
0ebd24e0 KW |
623 | },{ |
624 | .name = "copy-on-read", | |
625 | .type = QEMU_OPT_BOOL, | |
626 | .help = "copy read data from backing file into image file", | |
627 | }, | |
628 | ||
33cb7dc8 KW |
629 | { /* end of list */ } |
630 | }, | |
631 | }; | |
632 | ||
60e19e06 | 633 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 634 | { |
29c4e2b5 | 635 | const char *value; |
33cb7dc8 | 636 | DriveInfo *dinfo = NULL; |
f298d071 | 637 | QDict *bs_opts; |
33cb7dc8 KW |
638 | QemuOpts *legacy_opts; |
639 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 640 | BlockInterfaceType type; |
b41a7338 | 641 | int cyls, heads, secs, translation; |
87a899c5 | 642 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 643 | const char *devaddr; |
ee13ed1c | 644 | const char *werror, *rerror; |
a7fdbcf0 FZ |
645 | bool read_only = false; |
646 | bool copy_on_read; | |
bcf83158 | 647 | const char *serial; |
d095b465 | 648 | const char *filename; |
33cb7dc8 | 649 | Error *local_err = NULL; |
247147fb | 650 | int i; |
29c4e2b5 | 651 | |
57975222 | 652 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
653 | static const struct { |
654 | const char *from; | |
655 | const char *to; | |
656 | } opt_renames[] = { | |
657 | { "iops", "throttling.iops-total" }, | |
658 | { "iops_rd", "throttling.iops-read" }, | |
659 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 660 | |
247147fb KW |
661 | { "bps", "throttling.bps-total" }, |
662 | { "bps_rd", "throttling.bps-read" }, | |
663 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 664 | |
247147fb KW |
665 | { "iops_max", "throttling.iops-total-max" }, |
666 | { "iops_rd_max", "throttling.iops-read-max" }, | |
667 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 668 | |
247147fb KW |
669 | { "bps_max", "throttling.bps-total-max" }, |
670 | { "bps_rd_max", "throttling.bps-read-max" }, | |
671 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 672 | |
247147fb | 673 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 674 | |
247147fb KW |
675 | { "readonly", "read-only" }, |
676 | }; | |
677 | ||
678 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
679 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to); | |
680 | } | |
0f227a94 | 681 | |
29c4e2b5 KW |
682 | value = qemu_opt_get(all_opts, "cache"); |
683 | if (value) { | |
684 | int flags = 0; | |
685 | ||
686 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
687 | error_report("invalid cache option"); | |
688 | return NULL; | |
689 | } | |
690 | ||
691 | /* Specific options take precedence */ | |
692 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
693 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
694 | !!(flags & BDRV_O_CACHE_WB)); | |
695 | } | |
696 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
697 | qemu_opt_set_bool(all_opts, "cache.direct", | |
698 | !!(flags & BDRV_O_NOCACHE)); | |
699 | } | |
700 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
701 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
702 | !!(flags & BDRV_O_NO_FLUSH)); | |
703 | } | |
704 | qemu_opt_unset(all_opts, "cache"); | |
705 | } | |
706 | ||
f298d071 KW |
707 | /* Get a QDict for processing the options */ |
708 | bs_opts = qdict_new(); | |
709 | qemu_opts_to_qdict(all_opts, bs_opts); | |
710 | ||
87ea75d5 PC |
711 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
712 | &error_abort); | |
33cb7dc8 | 713 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 714 | if (local_err) { |
e8817e7b | 715 | error_report("%s", error_get_pretty(local_err)); |
33cb7dc8 KW |
716 | error_free(local_err); |
717 | goto fail; | |
718 | } | |
719 | ||
26929298 KW |
720 | /* Deprecated option boot=[on|off] */ |
721 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
722 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
723 | "ignored. Future versions will reject this parameter. Please " | |
724 | "update your scripts.\n"); | |
725 | } | |
726 | ||
33cb7dc8 KW |
727 | /* Media type */ |
728 | value = qemu_opt_get(legacy_opts, "media"); | |
729 | if (value) { | |
730 | if (!strcmp(value, "disk")) { | |
731 | media = MEDIA_DISK; | |
732 | } else if (!strcmp(value, "cdrom")) { | |
733 | media = MEDIA_CDROM; | |
a7fdbcf0 | 734 | read_only = true; |
33cb7dc8 KW |
735 | } else { |
736 | error_report("'%s' invalid media", value); | |
737 | goto fail; | |
738 | } | |
739 | } | |
740 | ||
0ebd24e0 | 741 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 742 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
743 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
744 | ||
745 | if (read_only && copy_on_read) { | |
746 | error_report("warning: disabling copy-on-read on read-only drive"); | |
747 | copy_on_read = false; | |
748 | } | |
749 | ||
750 | qdict_put(bs_opts, "read-only", | |
751 | qstring_from_str(read_only ? "on" : "off")); | |
752 | qdict_put(bs_opts, "copy-on-read", | |
753 | qstring_from_str(copy_on_read ? "on" :"off")); | |
754 | ||
593d464b KW |
755 | /* Controller type */ |
756 | value = qemu_opt_get(legacy_opts, "if"); | |
757 | if (value) { | |
758 | for (type = 0; | |
759 | type < IF_COUNT && strcmp(value, if_name[type]); | |
760 | type++) { | |
761 | } | |
762 | if (type == IF_COUNT) { | |
763 | error_report("unsupported bus type '%s'", value); | |
764 | goto fail; | |
765 | } | |
766 | } else { | |
767 | type = block_default_type; | |
768 | } | |
769 | ||
b41a7338 KW |
770 | /* Geometry */ |
771 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
772 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
773 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
774 | ||
775 | if (cyls || heads || secs) { | |
776 | if (cyls < 1) { | |
777 | error_report("invalid physical cyls number"); | |
778 | goto fail; | |
779 | } | |
780 | if (heads < 1) { | |
781 | error_report("invalid physical heads number"); | |
782 | goto fail; | |
783 | } | |
784 | if (secs < 1) { | |
785 | error_report("invalid physical secs number"); | |
786 | goto fail; | |
787 | } | |
788 | } | |
789 | ||
790 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
791 | value = qemu_opt_get(legacy_opts, "trans"); | |
792 | if (value != NULL) { | |
793 | if (!cyls) { | |
794 | error_report("'%s' trans must be used with cyls, heads and secs", | |
795 | value); | |
796 | goto fail; | |
797 | } | |
798 | if (!strcmp(value, "none")) { | |
799 | translation = BIOS_ATA_TRANSLATION_NONE; | |
800 | } else if (!strcmp(value, "lba")) { | |
801 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
802 | } else if (!strcmp(value, "large")) { |
803 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
804 | } else if (!strcmp(value, "rechs")) { | |
805 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
806 | } else if (!strcmp(value, "auto")) { |
807 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
808 | } else { | |
809 | error_report("'%s' invalid translation type", value); | |
810 | goto fail; | |
811 | } | |
812 | } | |
813 | ||
814 | if (media == MEDIA_CDROM) { | |
815 | if (cyls || secs || heads) { | |
816 | error_report("CHS can't be set with media=cdrom"); | |
817 | goto fail; | |
818 | } | |
819 | } | |
820 | ||
87a899c5 KW |
821 | /* Device address specified by bus/unit or index. |
822 | * If none was specified, try to find the first free one. */ | |
823 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
824 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
825 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
826 | ||
827 | max_devs = if_max_devs[type]; | |
828 | ||
829 | if (index != -1) { | |
830 | if (bus_id != 0 || unit_id != -1) { | |
831 | error_report("index cannot be used with bus and unit"); | |
832 | goto fail; | |
833 | } | |
834 | bus_id = drive_index_to_bus_id(type, index); | |
835 | unit_id = drive_index_to_unit_id(type, index); | |
836 | } | |
837 | ||
838 | if (unit_id == -1) { | |
839 | unit_id = 0; | |
840 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
841 | unit_id++; | |
842 | if (max_devs && unit_id >= max_devs) { | |
843 | unit_id -= max_devs; | |
844 | bus_id++; | |
845 | } | |
846 | } | |
847 | } | |
848 | ||
849 | if (max_devs && unit_id >= max_devs) { | |
850 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
851 | goto fail; | |
852 | } | |
853 | ||
854 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
855 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
856 | bus_id, unit_id, index); | |
857 | goto fail; | |
858 | } | |
859 | ||
bcf83158 KW |
860 | /* Serial number */ |
861 | serial = qemu_opt_get(legacy_opts, "serial"); | |
862 | ||
87a899c5 KW |
863 | /* no id supplied -> create one */ |
864 | if (qemu_opts_id(all_opts) == NULL) { | |
865 | char *new_id; | |
866 | const char *mediastr = ""; | |
867 | if (type == IF_IDE || type == IF_SCSI) { | |
868 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
869 | } | |
870 | if (max_devs) { | |
871 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
872 | mediastr, unit_id); | |
873 | } else { | |
874 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
875 | mediastr, unit_id); | |
876 | } | |
877 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
878 | g_free(new_id); | |
879 | } | |
880 | ||
394c7d4d KW |
881 | /* Add virtio block device */ |
882 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
883 | if (devaddr && type != IF_VIRTIO) { | |
884 | error_report("addr is not supported by this bus type"); | |
885 | goto fail; | |
886 | } | |
887 | ||
888 | if (type == IF_VIRTIO) { | |
889 | QemuOpts *devopts; | |
87ea75d5 PC |
890 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
891 | &error_abort); | |
394c7d4d KW |
892 | if (arch_type == QEMU_ARCH_S390X) { |
893 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); | |
894 | } else { | |
895 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); | |
896 | } | |
897 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id")); | |
898 | if (devaddr) { | |
899 | qemu_opt_set(devopts, "addr", devaddr); | |
900 | } | |
901 | } | |
902 | ||
d095b465 HR |
903 | filename = qemu_opt_get(legacy_opts, "file"); |
904 | ||
ee13ed1c KW |
905 | /* Check werror/rerror compatibility with if=... */ |
906 | werror = qemu_opt_get(legacy_opts, "werror"); | |
907 | if (werror != NULL) { | |
908 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
909 | type != IF_NONE) { | |
910 | error_report("werror is not supported by this bus type"); | |
911 | goto fail; | |
912 | } | |
913 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
914 | } | |
915 | ||
916 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
917 | if (rerror != NULL) { | |
918 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
919 | type != IF_NONE) { | |
920 | error_report("rerror is not supported by this bus type"); | |
921 | goto fail; | |
922 | } | |
923 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
924 | } | |
925 | ||
2d246f01 | 926 | /* Actual block device init: Functionality shared with blockdev-add */ |
ee13ed1c | 927 | dinfo = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 928 | bs_opts = NULL; |
2d246f01 | 929 | if (dinfo == NULL) { |
84d18f06 | 930 | if (local_err) { |
e8817e7b | 931 | error_report("%s", error_get_pretty(local_err)); |
b681072d KW |
932 | error_free(local_err); |
933 | } | |
2d246f01 | 934 | goto fail; |
b681072d | 935 | } else { |
84d18f06 | 936 | assert(!local_err); |
2d246f01 KW |
937 | } |
938 | ||
939 | /* Set legacy DriveInfo fields */ | |
940 | dinfo->enable_auto_del = true; | |
f298d071 | 941 | dinfo->opts = all_opts; |
2d246f01 | 942 | |
b41a7338 KW |
943 | dinfo->cyls = cyls; |
944 | dinfo->heads = heads; | |
945 | dinfo->secs = secs; | |
946 | dinfo->trans = translation; | |
947 | ||
ee13ed1c | 948 | dinfo->type = type; |
87a899c5 KW |
949 | dinfo->bus = bus_id; |
950 | dinfo->unit = unit_id; | |
394c7d4d | 951 | dinfo->devaddr = devaddr; |
87a899c5 | 952 | |
bcf83158 KW |
953 | dinfo->serial = g_strdup(serial); |
954 | ||
e34ef046 KW |
955 | switch(type) { |
956 | case IF_IDE: | |
957 | case IF_SCSI: | |
958 | case IF_XEN: | |
959 | case IF_NONE: | |
960 | dinfo->media_cd = media == MEDIA_CDROM; | |
961 | break; | |
962 | default: | |
963 | break; | |
964 | } | |
965 | ||
2d246f01 | 966 | fail: |
33cb7dc8 | 967 | qemu_opts_del(legacy_opts); |
3cb0e25c | 968 | QDECREF(bs_opts); |
2d246f01 | 969 | return dinfo; |
57975222 KW |
970 | } |
971 | ||
666daa68 MA |
972 | void do_commit(Monitor *mon, const QDict *qdict) |
973 | { | |
666daa68 | 974 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 975 | BlockDriverState *bs; |
e8877497 | 976 | int ret; |
666daa68 | 977 | |
6ab4b5ab | 978 | if (!strcmp(device, "all")) { |
e8877497 | 979 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
980 | } else { |
981 | bs = bdrv_find(device); | |
ac59eb95 | 982 | if (!bs) { |
58513bde | 983 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 984 | return; |
6ab4b5ab | 985 | } |
2d3735d3 | 986 | ret = bdrv_commit(bs); |
58513bde JC |
987 | } |
988 | if (ret < 0) { | |
989 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
990 | strerror(-ret)); | |
666daa68 MA |
991 | } |
992 | } | |
993 | ||
6cc2a415 PB |
994 | static void blockdev_do_action(int kind, void *data, Error **errp) |
995 | { | |
c8a83e85 KW |
996 | TransactionAction action; |
997 | TransactionActionList list; | |
6cc2a415 PB |
998 | |
999 | action.kind = kind; | |
1000 | action.data = data; | |
1001 | list.value = &action; | |
1002 | list.next = NULL; | |
1003 | qmp_transaction(&list, errp); | |
1004 | } | |
1005 | ||
0901f67e BC |
1006 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1007 | bool has_node_name, const char *node_name, | |
1008 | const char *snapshot_file, | |
1009 | bool has_snapshot_node_name, | |
1010 | const char *snapshot_node_name, | |
6106e249 | 1011 | bool has_format, const char *format, |
0901f67e | 1012 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1013 | { |
6cc2a415 | 1014 | BlockdevSnapshot snapshot = { |
0901f67e | 1015 | .has_device = has_device, |
6cc2a415 | 1016 | .device = (char *) device, |
0901f67e BC |
1017 | .has_node_name = has_node_name, |
1018 | .node_name = (char *) node_name, | |
6cc2a415 | 1019 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1020 | .has_snapshot_node_name = has_snapshot_node_name, |
1021 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1022 | .has_format = has_format, |
1023 | .format = (char *) format, | |
1024 | .has_mode = has_mode, | |
1025 | .mode = mode, | |
1026 | }; | |
c8a83e85 KW |
1027 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
1028 | &snapshot, errp); | |
f8882568 JS |
1029 | } |
1030 | ||
f323bc9e WX |
1031 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1032 | const char *name, | |
1033 | Error **errp) | |
1034 | { | |
1035 | BlockdevSnapshotInternal snapshot = { | |
1036 | .device = (char *) device, | |
1037 | .name = (char *) name | |
1038 | }; | |
1039 | ||
1040 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
1041 | &snapshot, errp); | |
1042 | } | |
1043 | ||
44e3e053 WX |
1044 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1045 | bool has_id, | |
1046 | const char *id, | |
1047 | bool has_name, | |
1048 | const char *name, | |
1049 | Error **errp) | |
1050 | { | |
1051 | BlockDriverState *bs = bdrv_find(device); | |
1052 | QEMUSnapshotInfo sn; | |
1053 | Error *local_err = NULL; | |
1054 | SnapshotInfo *info = NULL; | |
1055 | int ret; | |
1056 | ||
1057 | if (!bs) { | |
1058 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1059 | return NULL; | |
1060 | } | |
1061 | ||
1062 | if (!has_id) { | |
1063 | id = NULL; | |
1064 | } | |
1065 | ||
1066 | if (!has_name) { | |
1067 | name = NULL; | |
1068 | } | |
1069 | ||
1070 | if (!id && !name) { | |
1071 | error_setg(errp, "Name or id must be provided"); | |
1072 | return NULL; | |
1073 | } | |
1074 | ||
1075 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); | |
84d18f06 | 1076 | if (local_err) { |
44e3e053 WX |
1077 | error_propagate(errp, local_err); |
1078 | return NULL; | |
1079 | } | |
1080 | if (!ret) { | |
1081 | error_setg(errp, | |
1082 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1083 | "device '%s'", | |
1084 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
1085 | return NULL; | |
1086 | } | |
1087 | ||
1088 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1089 | if (local_err) { |
44e3e053 WX |
1090 | error_propagate(errp, local_err); |
1091 | return NULL; | |
1092 | } | |
1093 | ||
5839e53b | 1094 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1095 | info->id = g_strdup(sn.id_str); |
1096 | info->name = g_strdup(sn.name); | |
1097 | info->date_nsec = sn.date_nsec; | |
1098 | info->date_sec = sn.date_sec; | |
1099 | info->vm_state_size = sn.vm_state_size; | |
1100 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1101 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1102 | ||
1103 | return info; | |
1104 | } | |
8802d1fd JC |
1105 | |
1106 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 1107 | |
ba5d6ab6 | 1108 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
1109 | |
1110 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
1111 | abort() will be called, clean() will always be called if it present. */ | |
1112 | typedef struct BdrvActionOps { | |
1113 | /* Size of state struct, in bytes. */ | |
1114 | size_t instance_size; | |
1115 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 1116 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 1117 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 1118 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 1119 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 1120 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 1121 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 1122 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
1123 | } BdrvActionOps; |
1124 | ||
1125 | /* | |
1126 | * This structure must be arranged as first member in child type, assuming | |
1127 | * that compiler will also arrange it to the same address with parent instance. | |
1128 | * Later it will be used in free(). | |
1129 | */ | |
ba5d6ab6 | 1130 | struct BlkTransactionState { |
c8a83e85 | 1131 | TransactionAction *action; |
ba0c86a3 | 1132 | const BdrvActionOps *ops; |
ba5d6ab6 | 1133 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
1134 | }; |
1135 | ||
bbe86010 WX |
1136 | /* internal snapshot private data */ |
1137 | typedef struct InternalSnapshotState { | |
1138 | BlkTransactionState common; | |
1139 | BlockDriverState *bs; | |
1140 | QEMUSnapshotInfo sn; | |
1141 | } InternalSnapshotState; | |
1142 | ||
1143 | static void internal_snapshot_prepare(BlkTransactionState *common, | |
1144 | Error **errp) | |
1145 | { | |
f70edf99 | 1146 | Error *local_err = NULL; |
bbe86010 WX |
1147 | const char *device; |
1148 | const char *name; | |
1149 | BlockDriverState *bs; | |
1150 | QEMUSnapshotInfo old_sn, *sn; | |
1151 | bool ret; | |
1152 | qemu_timeval tv; | |
1153 | BlockdevSnapshotInternal *internal; | |
1154 | InternalSnapshotState *state; | |
1155 | int ret1; | |
1156 | ||
1157 | g_assert(common->action->kind == | |
1158 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); | |
1159 | internal = common->action->blockdev_snapshot_internal_sync; | |
1160 | state = DO_UPCAST(InternalSnapshotState, common, common); | |
1161 | ||
1162 | /* 1. parse input */ | |
1163 | device = internal->device; | |
1164 | name = internal->name; | |
1165 | ||
1166 | /* 2. check for validation */ | |
1167 | bs = bdrv_find(device); | |
1168 | if (!bs) { | |
1169 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1170 | return; | |
1171 | } | |
1172 | ||
1173 | if (!bdrv_is_inserted(bs)) { | |
1174 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1175 | return; | |
1176 | } | |
1177 | ||
1178 | if (bdrv_is_read_only(bs)) { | |
1179 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1180 | return; | |
1181 | } | |
1182 | ||
1183 | if (!bdrv_can_snapshot(bs)) { | |
1184 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, | |
1185 | bs->drv->format_name, device, "internal snapshot"); | |
1186 | return; | |
1187 | } | |
1188 | ||
1189 | if (!strlen(name)) { | |
1190 | error_setg(errp, "Name is empty"); | |
1191 | return; | |
1192 | } | |
1193 | ||
1194 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1195 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1196 | &local_err); | |
1197 | if (local_err) { | |
1198 | error_propagate(errp, local_err); | |
bbe86010 WX |
1199 | return; |
1200 | } else if (ret) { | |
1201 | error_setg(errp, | |
1202 | "Snapshot with name '%s' already exists on device '%s'", | |
1203 | name, device); | |
1204 | return; | |
1205 | } | |
1206 | ||
1207 | /* 3. take the snapshot */ | |
1208 | sn = &state->sn; | |
1209 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1210 | qemu_gettimeofday(&tv); | |
1211 | sn->date_sec = tv.tv_sec; | |
1212 | sn->date_nsec = tv.tv_usec * 1000; | |
1213 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1214 | ||
1215 | ret1 = bdrv_snapshot_create(bs, sn); | |
1216 | if (ret1 < 0) { | |
1217 | error_setg_errno(errp, -ret1, | |
1218 | "Failed to create snapshot '%s' on device '%s'", | |
1219 | name, device); | |
1220 | return; | |
1221 | } | |
1222 | ||
1223 | /* 4. succeed, mark a snapshot is created */ | |
1224 | state->bs = bs; | |
1225 | } | |
1226 | ||
1227 | static void internal_snapshot_abort(BlkTransactionState *common) | |
1228 | { | |
1229 | InternalSnapshotState *state = | |
1230 | DO_UPCAST(InternalSnapshotState, common, common); | |
1231 | BlockDriverState *bs = state->bs; | |
1232 | QEMUSnapshotInfo *sn = &state->sn; | |
1233 | Error *local_error = NULL; | |
1234 | ||
1235 | if (!bs) { | |
1236 | return; | |
1237 | } | |
1238 | ||
1239 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1240 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1241 | "device '%s' in abort: %s", | |
1242 | sn->id_str, | |
1243 | sn->name, | |
1244 | bdrv_get_device_name(bs), | |
1245 | error_get_pretty(local_error)); | |
1246 | error_free(local_error); | |
1247 | } | |
1248 | } | |
1249 | ||
ba0c86a3 | 1250 | /* external snapshot private data */ |
ba5d6ab6 SH |
1251 | typedef struct ExternalSnapshotState { |
1252 | BlkTransactionState common; | |
8802d1fd JC |
1253 | BlockDriverState *old_bs; |
1254 | BlockDriverState *new_bs; | |
ba5d6ab6 | 1255 | } ExternalSnapshotState; |
8802d1fd | 1256 | |
ba5d6ab6 | 1257 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
1258 | Error **errp) |
1259 | { | |
9b9877ee WX |
1260 | BlockDriver *drv; |
1261 | int flags, ret; | |
0901f67e | 1262 | QDict *options = NULL; |
9b9877ee | 1263 | Error *local_err = NULL; |
0901f67e | 1264 | bool has_device = false; |
e2a31e87 | 1265 | const char *device; |
0901f67e BC |
1266 | bool has_node_name = false; |
1267 | const char *node_name; | |
1268 | bool has_snapshot_node_name = false; | |
1269 | const char *snapshot_node_name; | |
e2a31e87 WX |
1270 | const char *new_image_file; |
1271 | const char *format = "qcow2"; | |
1272 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
1273 | ExternalSnapshotState *state = |
1274 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1275 | TransactionAction *action = common->action; |
9b9877ee | 1276 | |
e2a31e87 | 1277 | /* get parameters */ |
c8a83e85 | 1278 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 | 1279 | |
0901f67e | 1280 | has_device = action->blockdev_snapshot_sync->has_device; |
e2a31e87 | 1281 | device = action->blockdev_snapshot_sync->device; |
0901f67e BC |
1282 | has_node_name = action->blockdev_snapshot_sync->has_node_name; |
1283 | node_name = action->blockdev_snapshot_sync->node_name; | |
1284 | has_snapshot_node_name = | |
1285 | action->blockdev_snapshot_sync->has_snapshot_node_name; | |
1286 | snapshot_node_name = action->blockdev_snapshot_sync->snapshot_node_name; | |
1287 | ||
e2a31e87 WX |
1288 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; |
1289 | if (action->blockdev_snapshot_sync->has_format) { | |
1290 | format = action->blockdev_snapshot_sync->format; | |
1291 | } | |
1292 | if (action->blockdev_snapshot_sync->has_mode) { | |
1293 | mode = action->blockdev_snapshot_sync->mode; | |
1294 | } | |
1295 | ||
1296 | /* start processing */ | |
9b9877ee WX |
1297 | drv = bdrv_find_format(format); |
1298 | if (!drv) { | |
1299 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1300 | return; | |
1301 | } | |
1302 | ||
0901f67e BC |
1303 | state->old_bs = bdrv_lookup_bs(has_device ? device : NULL, |
1304 | has_node_name ? node_name : NULL, | |
1305 | &local_err); | |
84d18f06 | 1306 | if (local_err) { |
0901f67e BC |
1307 | error_propagate(errp, local_err); |
1308 | return; | |
1309 | } | |
1310 | ||
1311 | if (has_node_name && !has_snapshot_node_name) { | |
1312 | error_setg(errp, "New snapshot node name missing"); | |
1313 | return; | |
1314 | } | |
1315 | ||
1316 | if (has_snapshot_node_name && bdrv_find_node(snapshot_node_name)) { | |
1317 | error_setg(errp, "New snapshot node name already existing"); | |
9b9877ee WX |
1318 | return; |
1319 | } | |
1320 | ||
ba5d6ab6 | 1321 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
1322 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1323 | return; | |
1324 | } | |
1325 | ||
3718d8ab FZ |
1326 | if (bdrv_op_is_blocked(state->old_bs, |
1327 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1328 | return; |
1329 | } | |
1330 | ||
ba5d6ab6 SH |
1331 | if (!bdrv_is_read_only(state->old_bs)) { |
1332 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
1333 | error_set(errp, QERR_IO_ERROR); |
1334 | return; | |
1335 | } | |
1336 | } | |
1337 | ||
212a5a8f | 1338 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
f6186f49 BC |
1339 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); |
1340 | return; | |
1341 | } | |
1342 | ||
ba5d6ab6 | 1343 | flags = state->old_bs->open_flags; |
9b9877ee | 1344 | |
9b9877ee WX |
1345 | /* create new image w/backing file */ |
1346 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1347 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
1348 | state->old_bs->filename, |
1349 | state->old_bs->drv->format_name, | |
9b9877ee | 1350 | NULL, -1, flags, &local_err, false); |
84d18f06 | 1351 | if (local_err) { |
9b9877ee WX |
1352 | error_propagate(errp, local_err); |
1353 | return; | |
1354 | } | |
1355 | } | |
1356 | ||
0901f67e BC |
1357 | if (has_snapshot_node_name) { |
1358 | options = qdict_new(); | |
1359 | qdict_put(options, "node-name", | |
1360 | qstring_from_str(snapshot_node_name)); | |
1361 | } | |
1362 | ||
9b9877ee WX |
1363 | /* TODO Inherit bs->options or only take explicit options with an |
1364 | * extended QMP command? */ | |
f67503e5 | 1365 | assert(state->new_bs == NULL); |
ddf5636d | 1366 | ret = bdrv_open(&state->new_bs, new_image_file, NULL, options, |
34b5d2c6 | 1367 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
f67503e5 | 1368 | /* We will manually add the backing_hd field to the bs later */ |
9b9877ee | 1369 | if (ret != 0) { |
34b5d2c6 | 1370 | error_propagate(errp, local_err); |
9b9877ee WX |
1371 | } |
1372 | } | |
1373 | ||
ba5d6ab6 | 1374 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 1375 | { |
ba5d6ab6 SH |
1376 | ExternalSnapshotState *state = |
1377 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1378 | |
ba5d6ab6 SH |
1379 | /* This removes our old bs and adds the new bs */ |
1380 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1381 | /* We don't need (or want) to use the transactional |
1382 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1383 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 1384 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
1385 | NULL); |
1386 | } | |
1387 | ||
ba5d6ab6 | 1388 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1389 | { |
ba5d6ab6 SH |
1390 | ExternalSnapshotState *state = |
1391 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1392 | if (state->new_bs) { | |
4f6fd349 | 1393 | bdrv_unref(state->new_bs); |
96b86bf7 WX |
1394 | } |
1395 | } | |
1396 | ||
3037f364 SH |
1397 | typedef struct DriveBackupState { |
1398 | BlkTransactionState common; | |
1399 | BlockDriverState *bs; | |
1400 | BlockJob *job; | |
1401 | } DriveBackupState; | |
1402 | ||
1403 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1404 | { | |
1405 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1406 | DriveBackup *backup; | |
1407 | Error *local_err = NULL; | |
1408 | ||
1409 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1410 | backup = common->action->drive_backup; | |
1411 | ||
1412 | qmp_drive_backup(backup->device, backup->target, | |
1413 | backup->has_format, backup->format, | |
b53169ea | 1414 | backup->sync, |
3037f364 SH |
1415 | backup->has_mode, backup->mode, |
1416 | backup->has_speed, backup->speed, | |
1417 | backup->has_on_source_error, backup->on_source_error, | |
1418 | backup->has_on_target_error, backup->on_target_error, | |
1419 | &local_err); | |
84d18f06 | 1420 | if (local_err) { |
3037f364 SH |
1421 | error_propagate(errp, local_err); |
1422 | state->bs = NULL; | |
1423 | state->job = NULL; | |
1424 | return; | |
1425 | } | |
1426 | ||
1427 | state->bs = bdrv_find(backup->device); | |
1428 | state->job = state->bs->job; | |
1429 | } | |
1430 | ||
1431 | static void drive_backup_abort(BlkTransactionState *common) | |
1432 | { | |
1433 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1434 | BlockDriverState *bs = state->bs; | |
1435 | ||
1436 | /* Only cancel if it's the job we started */ | |
1437 | if (bs && bs->job && bs->job == state->job) { | |
1438 | block_job_cancel_sync(bs->job); | |
1439 | } | |
1440 | } | |
1441 | ||
78b18b78 SH |
1442 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1443 | { | |
1444 | error_setg(errp, "Transaction aborted using Abort action"); | |
1445 | } | |
1446 | ||
1447 | static void abort_commit(BlkTransactionState *common) | |
1448 | { | |
dfc6f865 | 1449 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1450 | } |
1451 | ||
ba0c86a3 | 1452 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1453 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1454 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1455 | .prepare = external_snapshot_prepare, |
1456 | .commit = external_snapshot_commit, | |
1457 | .abort = external_snapshot_abort, | |
1458 | }, | |
3037f364 SH |
1459 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1460 | .instance_size = sizeof(DriveBackupState), | |
1461 | .prepare = drive_backup_prepare, | |
1462 | .abort = drive_backup_abort, | |
1463 | }, | |
78b18b78 SH |
1464 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1465 | .instance_size = sizeof(BlkTransactionState), | |
1466 | .prepare = abort_prepare, | |
1467 | .commit = abort_commit, | |
1468 | }, | |
bbe86010 WX |
1469 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
1470 | .instance_size = sizeof(InternalSnapshotState), | |
1471 | .prepare = internal_snapshot_prepare, | |
1472 | .abort = internal_snapshot_abort, | |
1473 | }, | |
ba0c86a3 WX |
1474 | }; |
1475 | ||
8802d1fd JC |
1476 | /* |
1477 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1478 | * then we do not pivot any of the devices in the group, and abandon the | |
1479 | * snapshots | |
1480 | */ | |
c8a83e85 | 1481 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1482 | { |
c8a83e85 | 1483 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1484 | BlkTransactionState *state, *next; |
43e17041 | 1485 | Error *local_err = NULL; |
8802d1fd | 1486 | |
ba5d6ab6 | 1487 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1488 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1489 | ||
1490 | /* drain all i/o before any snapshots */ | |
1491 | bdrv_drain_all(); | |
1492 | ||
1493 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1494 | while (NULL != dev_entry) { | |
c8a83e85 | 1495 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1496 | const BdrvActionOps *ops; |
52e7c241 | 1497 | |
8802d1fd JC |
1498 | dev_info = dev_entry->value; |
1499 | dev_entry = dev_entry->next; | |
1500 | ||
ba0c86a3 WX |
1501 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1502 | ||
1503 | ops = &actions[dev_info->kind]; | |
aa3fe714 HR |
1504 | assert(ops->instance_size > 0); |
1505 | ||
ba5d6ab6 SH |
1506 | state = g_malloc0(ops->instance_size); |
1507 | state->ops = ops; | |
1508 | state->action = dev_info; | |
1509 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1510 | |
ba5d6ab6 | 1511 | state->ops->prepare(state, &local_err); |
84d18f06 | 1512 | if (local_err) { |
ba0c86a3 WX |
1513 | error_propagate(errp, local_err); |
1514 | goto delete_and_fail; | |
8802d1fd | 1515 | } |
8802d1fd JC |
1516 | } |
1517 | ||
ba5d6ab6 | 1518 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1519 | if (state->ops->commit) { |
1520 | state->ops->commit(state); | |
1521 | } | |
8802d1fd JC |
1522 | } |
1523 | ||
1524 | /* success */ | |
1525 | goto exit; | |
1526 | ||
1527 | delete_and_fail: | |
1528 | /* | |
1529 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1530 | * the original bs for all images | |
1531 | */ | |
ba5d6ab6 SH |
1532 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1533 | if (state->ops->abort) { | |
1534 | state->ops->abort(state); | |
ba0c86a3 | 1535 | } |
8802d1fd JC |
1536 | } |
1537 | exit: | |
ba5d6ab6 SH |
1538 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1539 | if (state->ops->clean) { | |
1540 | state->ops->clean(state); | |
ba0c86a3 | 1541 | } |
ba5d6ab6 | 1542 | g_free(state); |
8802d1fd | 1543 | } |
8802d1fd JC |
1544 | } |
1545 | ||
1546 | ||
92d48558 | 1547 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1548 | { |
3718d8ab | 1549 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
2d3735d3 SH |
1550 | return; |
1551 | } | |
2c6942fa | 1552 | if (!bdrv_dev_has_removable_media(bs)) { |
f231b88d CR |
1553 | error_setg(errp, "Device '%s' is not removable", |
1554 | bdrv_get_device_name(bs)); | |
92d48558 | 1555 | return; |
ea8f942f | 1556 | } |
92d48558 | 1557 | |
025ccaa7 PB |
1558 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1559 | bdrv_dev_eject_request(bs, force); | |
1560 | if (!force) { | |
f231b88d CR |
1561 | error_setg(errp, "Device '%s' is locked", |
1562 | bdrv_get_device_name(bs)); | |
92d48558 | 1563 | return; |
025ccaa7 | 1564 | } |
666daa68 | 1565 | } |
92d48558 | 1566 | |
3b5276b5 | 1567 | bdrv_close(bs); |
666daa68 MA |
1568 | } |
1569 | ||
c245b6a3 | 1570 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1571 | { |
1572 | BlockDriverState *bs; | |
666daa68 | 1573 | |
c245b6a3 | 1574 | bs = bdrv_find(device); |
666daa68 | 1575 | if (!bs) { |
c245b6a3 LC |
1576 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1577 | return; | |
92d48558 LC |
1578 | } |
1579 | ||
c245b6a3 | 1580 | eject_device(bs, force, errp); |
666daa68 MA |
1581 | } |
1582 | ||
12d3ba82 BC |
1583 | void qmp_block_passwd(bool has_device, const char *device, |
1584 | bool has_node_name, const char *node_name, | |
1585 | const char *password, Error **errp) | |
666daa68 | 1586 | { |
12d3ba82 | 1587 | Error *local_err = NULL; |
666daa68 MA |
1588 | BlockDriverState *bs; |
1589 | int err; | |
1590 | ||
12d3ba82 BC |
1591 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1592 | has_node_name ? node_name : NULL, | |
1593 | &local_err); | |
84d18f06 | 1594 | if (local_err) { |
12d3ba82 | 1595 | error_propagate(errp, local_err); |
a4dea8a9 | 1596 | return; |
666daa68 MA |
1597 | } |
1598 | ||
a4dea8a9 | 1599 | err = bdrv_set_key(bs, password); |
666daa68 | 1600 | if (err == -EINVAL) { |
a4dea8a9 LC |
1601 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1602 | return; | |
666daa68 | 1603 | } else if (err < 0) { |
a4dea8a9 LC |
1604 | error_set(errp, QERR_INVALID_PASSWORD); |
1605 | return; | |
666daa68 | 1606 | } |
666daa68 MA |
1607 | } |
1608 | ||
333a96ec LC |
1609 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1610 | int bdrv_flags, BlockDriver *drv, | |
1611 | const char *password, Error **errp) | |
1612 | { | |
34b5d2c6 | 1613 | Error *local_err = NULL; |
0eef407c LC |
1614 | int ret; |
1615 | ||
ddf5636d | 1616 | ret = bdrv_open(&bs, filename, NULL, NULL, bdrv_flags, drv, &local_err); |
0eef407c | 1617 | if (ret < 0) { |
34b5d2c6 | 1618 | error_propagate(errp, local_err); |
333a96ec LC |
1619 | return; |
1620 | } | |
1621 | ||
1622 | if (bdrv_key_required(bs)) { | |
1623 | if (password) { | |
1624 | if (bdrv_set_key(bs, password) < 0) { | |
1625 | error_set(errp, QERR_INVALID_PASSWORD); | |
1626 | } | |
1627 | } else { | |
1628 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1629 | bdrv_get_encrypted_filename(bs)); | |
1630 | } | |
1631 | } else if (password) { | |
1632 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1633 | } | |
1634 | } | |
1635 | ||
1636 | void qmp_change_blockdev(const char *device, const char *filename, | |
314f7ea7 | 1637 | const char *format, Error **errp) |
666daa68 MA |
1638 | { |
1639 | BlockDriverState *bs; | |
1640 | BlockDriver *drv = NULL; | |
1641 | int bdrv_flags; | |
92d48558 | 1642 | Error *err = NULL; |
666daa68 MA |
1643 | |
1644 | bs = bdrv_find(device); | |
1645 | if (!bs) { | |
333a96ec LC |
1646 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1647 | return; | |
666daa68 | 1648 | } |
333a96ec LC |
1649 | |
1650 | if (format) { | |
b64ec4e4 | 1651 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1652 | if (!drv) { |
333a96ec LC |
1653 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1654 | return; | |
666daa68 MA |
1655 | } |
1656 | } | |
333a96ec | 1657 | |
92d48558 | 1658 | eject_device(bs, 0, &err); |
84d18f06 | 1659 | if (err) { |
333a96ec LC |
1660 | error_propagate(errp, err); |
1661 | return; | |
666daa68 | 1662 | } |
333a96ec | 1663 | |
528f7663 | 1664 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1665 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1666 | |
1667 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1668 | } |
9063f814 | 1669 | |
727f005e | 1670 | /* throttling disk I/O limits */ |
80047da5 | 1671 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1672 | int64_t bps_wr, |
1673 | int64_t iops, | |
1674 | int64_t iops_rd, | |
1675 | int64_t iops_wr, | |
1676 | bool has_bps_max, | |
1677 | int64_t bps_max, | |
1678 | bool has_bps_rd_max, | |
1679 | int64_t bps_rd_max, | |
1680 | bool has_bps_wr_max, | |
1681 | int64_t bps_wr_max, | |
1682 | bool has_iops_max, | |
1683 | int64_t iops_max, | |
1684 | bool has_iops_rd_max, | |
1685 | int64_t iops_rd_max, | |
1686 | bool has_iops_wr_max, | |
2024c1df BC |
1687 | int64_t iops_wr_max, |
1688 | bool has_iops_size, | |
1689 | int64_t iops_size, Error **errp) | |
727f005e | 1690 | { |
cc0681c4 | 1691 | ThrottleConfig cfg; |
727f005e | 1692 | BlockDriverState *bs; |
b15446fd | 1693 | AioContext *aio_context; |
727f005e | 1694 | |
80047da5 | 1695 | bs = bdrv_find(device); |
727f005e | 1696 | if (!bs) { |
80047da5 LC |
1697 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1698 | return; | |
727f005e ZYW |
1699 | } |
1700 | ||
cc0681c4 BC |
1701 | memset(&cfg, 0, sizeof(cfg)); |
1702 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1703 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1704 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1705 | ||
1706 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1707 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1708 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1709 | ||
3e9fab69 BC |
1710 | if (has_bps_max) { |
1711 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1712 | } | |
1713 | if (has_bps_rd_max) { | |
1714 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1715 | } | |
1716 | if (has_bps_wr_max) { | |
1717 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1718 | } | |
1719 | if (has_iops_max) { | |
1720 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1721 | } | |
1722 | if (has_iops_rd_max) { | |
1723 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1724 | } | |
1725 | if (has_iops_wr_max) { | |
1726 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1727 | } | |
727f005e | 1728 | |
2024c1df BC |
1729 | if (has_iops_size) { |
1730 | cfg.op_size = iops_size; | |
1731 | } | |
cc0681c4 BC |
1732 | |
1733 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1734 | return; |
727f005e ZYW |
1735 | } |
1736 | ||
b15446fd SH |
1737 | aio_context = bdrv_get_aio_context(bs); |
1738 | aio_context_acquire(aio_context); | |
1739 | ||
cc0681c4 | 1740 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1741 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1742 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1743 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1744 | } |
1745 | ||
1746 | if (bs->io_limits_enabled) { | |
1747 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1748 | } |
b15446fd SH |
1749 | |
1750 | aio_context_release(aio_context); | |
727f005e ZYW |
1751 | } |
1752 | ||
9063f814 RH |
1753 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1754 | { | |
1755 | const char *id = qdict_get_str(qdict, "id"); | |
1756 | BlockDriverState *bs; | |
48f364dd | 1757 | DriveInfo *dinfo; |
8ad4202b | 1758 | AioContext *aio_context; |
3718d8ab | 1759 | Error *local_err = NULL; |
9063f814 RH |
1760 | |
1761 | bs = bdrv_find(id); | |
1762 | if (!bs) { | |
b1422f20 | 1763 | error_report("Device '%s' not found", id); |
9063f814 RH |
1764 | return -1; |
1765 | } | |
8ad4202b | 1766 | |
48f364dd MA |
1767 | dinfo = drive_get_by_blockdev(bs); |
1768 | if (dinfo && !dinfo->enable_auto_del) { | |
1769 | error_report("Deleting device added with blockdev-add" | |
1770 | " is not supported"); | |
1771 | return -1; | |
1772 | } | |
1773 | ||
8ad4202b SH |
1774 | aio_context = bdrv_get_aio_context(bs); |
1775 | aio_context_acquire(aio_context); | |
1776 | ||
3718d8ab FZ |
1777 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
1778 | error_report("%s", error_get_pretty(local_err)); | |
1779 | error_free(local_err); | |
8ad4202b | 1780 | aio_context_release(aio_context); |
8591675f MT |
1781 | return -1; |
1782 | } | |
9063f814 RH |
1783 | |
1784 | /* quiesce block driver; prevent further io */ | |
922453bc | 1785 | bdrv_drain_all(); |
9063f814 RH |
1786 | bdrv_flush(bs); |
1787 | bdrv_close(bs); | |
1788 | ||
fa879d62 | 1789 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1790 | * then we need to make the drive anonymous until the device |
1791 | * can be removed. If this is a drive with no device backing | |
1792 | * then we can just get rid of the block driver state right here. | |
1793 | */ | |
fa879d62 | 1794 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1795 | bdrv_make_anon(bs); |
293c51a6 SH |
1796 | |
1797 | /* Further I/O must not pause the guest */ | |
1798 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1799 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 1800 | } else { |
48f364dd | 1801 | drive_del(dinfo); |
9063f814 RH |
1802 | } |
1803 | ||
8ad4202b | 1804 | aio_context_release(aio_context); |
9063f814 RH |
1805 | return 0; |
1806 | } | |
6d4a2b3a | 1807 | |
3b1dbd11 BC |
1808 | void qmp_block_resize(bool has_device, const char *device, |
1809 | bool has_node_name, const char *node_name, | |
1810 | int64_t size, Error **errp) | |
6d4a2b3a | 1811 | { |
3b1dbd11 | 1812 | Error *local_err = NULL; |
6d4a2b3a | 1813 | BlockDriverState *bs; |
927e0e76 | 1814 | AioContext *aio_context; |
8732901e | 1815 | int ret; |
6d4a2b3a | 1816 | |
3b1dbd11 BC |
1817 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1818 | has_node_name ? node_name : NULL, | |
1819 | &local_err); | |
84d18f06 | 1820 | if (local_err) { |
3b1dbd11 BC |
1821 | error_propagate(errp, local_err); |
1822 | return; | |
1823 | } | |
1824 | ||
927e0e76 SH |
1825 | aio_context = bdrv_get_aio_context(bs); |
1826 | aio_context_acquire(aio_context); | |
1827 | ||
3b1dbd11 BC |
1828 | if (!bdrv_is_first_non_filter(bs)) { |
1829 | error_set(errp, QERR_FEATURE_DISABLED, "resize"); | |
927e0e76 | 1830 | goto out; |
6d4a2b3a CH |
1831 | } |
1832 | ||
1833 | if (size < 0) { | |
939a1cc3 | 1834 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 1835 | goto out; |
6d4a2b3a CH |
1836 | } |
1837 | ||
9c75e168 JC |
1838 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
1839 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
927e0e76 | 1840 | goto out; |
9c75e168 JC |
1841 | } |
1842 | ||
92b7a08d PL |
1843 | /* complete all in-flight operations before resizing the device */ |
1844 | bdrv_drain_all(); | |
1845 | ||
8732901e KW |
1846 | ret = bdrv_truncate(bs, size); |
1847 | switch (ret) { | |
939a1cc3 SH |
1848 | case 0: |
1849 | break; | |
1850 | case -ENOMEDIUM: | |
1851 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1852 | break; | |
1853 | case -ENOTSUP: | |
1854 | error_set(errp, QERR_UNSUPPORTED); | |
1855 | break; | |
1856 | case -EACCES: | |
1857 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1858 | break; | |
1859 | case -EBUSY: | |
1860 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1861 | break; | |
1862 | default: | |
8732901e | 1863 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1864 | break; |
6d4a2b3a | 1865 | } |
927e0e76 SH |
1866 | |
1867 | out: | |
1868 | aio_context_release(aio_context); | |
6d4a2b3a | 1869 | } |
12bd451f | 1870 | |
9abf2dba | 1871 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1872 | { |
1873 | BlockDriverState *bs = opaque; | |
bcada37b | 1874 | const char *msg = NULL; |
12bd451f | 1875 | |
9abf2dba | 1876 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1877 | |
1878 | assert(bs->job); | |
bcada37b | 1879 | |
12bd451f | 1880 | if (ret < 0) { |
bcada37b | 1881 | msg = strerror(-ret); |
12bd451f SH |
1882 | } |
1883 | ||
370521a1 | 1884 | if (block_job_is_cancelled(bs->job)) { |
bcada37b | 1885 | block_job_event_cancelled(bs->job); |
370521a1 | 1886 | } else { |
bcada37b | 1887 | block_job_event_completed(bs->job, msg); |
370521a1 | 1888 | } |
aa398a5c | 1889 | |
fa510ebf | 1890 | bdrv_put_ref_bh_schedule(bs); |
12bd451f SH |
1891 | } |
1892 | ||
13d8cc51 JC |
1893 | void qmp_block_stream(const char *device, |
1894 | bool has_base, const char *base, | |
1895 | bool has_backing_file, const char *backing_file, | |
1896 | bool has_speed, int64_t speed, | |
1d809098 PB |
1897 | bool has_on_error, BlockdevOnError on_error, |
1898 | Error **errp) | |
12bd451f SH |
1899 | { |
1900 | BlockDriverState *bs; | |
c8c3080f | 1901 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1902 | Error *local_err = NULL; |
13d8cc51 | 1903 | const char *base_name = NULL; |
12bd451f | 1904 | |
1d809098 PB |
1905 | if (!has_on_error) { |
1906 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1907 | } | |
1908 | ||
12bd451f SH |
1909 | bs = bdrv_find(device); |
1910 | if (!bs) { | |
1911 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1912 | return; | |
1913 | } | |
1914 | ||
628ff683 FZ |
1915 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
1916 | return; | |
1917 | } | |
1918 | ||
13d8cc51 | 1919 | if (has_base) { |
c8c3080f MT |
1920 | base_bs = bdrv_find_backing_image(bs, base); |
1921 | if (base_bs == NULL) { | |
1922 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1923 | return; | |
1924 | } | |
13d8cc51 | 1925 | base_name = base; |
12bd451f SH |
1926 | } |
1927 | ||
13d8cc51 JC |
1928 | /* if we are streaming the entire chain, the result will have no backing |
1929 | * file, and specifying one is therefore an error */ | |
1930 | if (base_bs == NULL && has_backing_file) { | |
1931 | error_setg(errp, "backing file specified, but streaming the " | |
1932 | "entire chain"); | |
1933 | return; | |
1934 | } | |
1935 | ||
1936 | /* backing_file string overrides base bs filename */ | |
1937 | base_name = has_backing_file ? backing_file : base_name; | |
1938 | ||
1939 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, | |
1d809098 | 1940 | on_error, block_job_cb, bs, &local_err); |
84d18f06 | 1941 | if (local_err) { |
fd7f8c65 SH |
1942 | error_propagate(errp, local_err); |
1943 | return; | |
12bd451f SH |
1944 | } |
1945 | ||
1946 | trace_qmp_block_stream(bs, bs->job); | |
1947 | } | |
2d47c6e9 | 1948 | |
ed61fc10 | 1949 | void qmp_block_commit(const char *device, |
7676e2c5 JC |
1950 | bool has_base, const char *base, |
1951 | bool has_top, const char *top, | |
54e26900 | 1952 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
1953 | bool has_speed, int64_t speed, |
1954 | Error **errp) | |
1955 | { | |
1956 | BlockDriverState *bs; | |
1957 | BlockDriverState *base_bs, *top_bs; | |
1958 | Error *local_err = NULL; | |
1959 | /* This will be part of the QMP command, if/when the | |
1960 | * BlockdevOnError change for blkmirror makes it in | |
1961 | */ | |
92aa5c6d | 1962 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 1963 | |
54504663 HR |
1964 | if (!has_speed) { |
1965 | speed = 0; | |
1966 | } | |
1967 | ||
ed61fc10 JC |
1968 | /* drain all i/o before commits */ |
1969 | bdrv_drain_all(); | |
1970 | ||
7676e2c5 JC |
1971 | /* Important Note: |
1972 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
1973 | * live commit feature versions; for this to work, we must make sure to | |
1974 | * perform the device lookup before any generic errors that may occur in a | |
1975 | * scenario in which all optional arguments are omitted. */ | |
ed61fc10 JC |
1976 | bs = bdrv_find(device); |
1977 | if (!bs) { | |
1978 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1979 | return; | |
628ff683 FZ |
1980 | } |
1981 | ||
1982 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT, errp)) { | |
1983 | return; | |
ed61fc10 | 1984 | } |
ed61fc10 JC |
1985 | |
1986 | /* default top_bs is the active layer */ | |
1987 | top_bs = bs; | |
1988 | ||
7676e2c5 | 1989 | if (has_top && top) { |
ed61fc10 JC |
1990 | if (strcmp(bs->filename, top) != 0) { |
1991 | top_bs = bdrv_find_backing_image(bs, top); | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | if (top_bs == NULL) { | |
1996 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1997 | return; | |
1998 | } | |
1999 | ||
d5208c45 JC |
2000 | if (has_base && base) { |
2001 | base_bs = bdrv_find_backing_image(top_bs, base); | |
2002 | } else { | |
2003 | base_bs = bdrv_find_base(top_bs); | |
2004 | } | |
2005 | ||
2006 | if (base_bs == NULL) { | |
2007 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
2008 | return; | |
2009 | } | |
2010 | ||
7676e2c5 JC |
2011 | /* Do not allow attempts to commit an image into itself */ |
2012 | if (top_bs == base_bs) { | |
2013 | error_setg(errp, "cannot commit an image into itself"); | |
2014 | return; | |
2015 | } | |
2016 | ||
20a63d2c | 2017 | if (top_bs == bs) { |
54e26900 JC |
2018 | if (has_backing_file) { |
2019 | error_setg(errp, "'backing-file' specified," | |
2020 | " but 'top' is the active layer"); | |
2021 | return; | |
2022 | } | |
20a63d2c FZ |
2023 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
2024 | bs, &local_err); | |
2025 | } else { | |
2026 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, | |
54e26900 | 2027 | has_backing_file ? backing_file : NULL, &local_err); |
20a63d2c | 2028 | } |
ed61fc10 JC |
2029 | if (local_err != NULL) { |
2030 | error_propagate(errp, local_err); | |
2031 | return; | |
2032 | } | |
ed61fc10 JC |
2033 | } |
2034 | ||
99a9addf SH |
2035 | void qmp_drive_backup(const char *device, const char *target, |
2036 | bool has_format, const char *format, | |
b53169ea | 2037 | enum MirrorSyncMode sync, |
99a9addf SH |
2038 | bool has_mode, enum NewImageMode mode, |
2039 | bool has_speed, int64_t speed, | |
2040 | bool has_on_source_error, BlockdevOnError on_source_error, | |
2041 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2042 | Error **errp) | |
2043 | { | |
2044 | BlockDriverState *bs; | |
2045 | BlockDriverState *target_bs; | |
fc5d3f84 | 2046 | BlockDriverState *source = NULL; |
99a9addf SH |
2047 | BlockDriver *drv = NULL; |
2048 | Error *local_err = NULL; | |
2049 | int flags; | |
2050 | int64_t size; | |
2051 | int ret; | |
2052 | ||
2053 | if (!has_speed) { | |
2054 | speed = 0; | |
2055 | } | |
2056 | if (!has_on_source_error) { | |
2057 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2058 | } | |
2059 | if (!has_on_target_error) { | |
2060 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2061 | } | |
2062 | if (!has_mode) { | |
2063 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2064 | } | |
2065 | ||
2066 | bs = bdrv_find(device); | |
2067 | if (!bs) { | |
2068 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2069 | return; | |
2070 | } | |
2071 | ||
2072 | if (!bdrv_is_inserted(bs)) { | |
2073 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2074 | return; | |
2075 | } | |
2076 | ||
2077 | if (!has_format) { | |
2078 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2079 | } | |
2080 | if (format) { | |
2081 | drv = bdrv_find_format(format); | |
2082 | if (!drv) { | |
2083 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
2084 | return; | |
2085 | } | |
2086 | } | |
2087 | ||
3718d8ab | 2088 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
99a9addf SH |
2089 | return; |
2090 | } | |
2091 | ||
2092 | flags = bs->open_flags | BDRV_O_RDWR; | |
2093 | ||
fc5d3f84 IM |
2094 | /* See if we have a backing HD we can use to create our new image |
2095 | * on top of. */ | |
2096 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
2097 | source = bs->backing_hd; | |
2098 | if (!source) { | |
2099 | sync = MIRROR_SYNC_MODE_FULL; | |
2100 | } | |
2101 | } | |
2102 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
2103 | source = bs; | |
2104 | } | |
2105 | ||
99a9addf SH |
2106 | size = bdrv_getlength(bs); |
2107 | if (size < 0) { | |
2108 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2109 | return; | |
2110 | } | |
2111 | ||
2112 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
2113 | assert(format && drv); | |
fc5d3f84 IM |
2114 | if (source) { |
2115 | bdrv_img_create(target, format, source->filename, | |
2116 | source->drv->format_name, NULL, | |
2117 | size, flags, &local_err, false); | |
2118 | } else { | |
2119 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
2120 | size, flags, &local_err, false); | |
2121 | } | |
99a9addf SH |
2122 | } |
2123 | ||
84d18f06 | 2124 | if (local_err) { |
99a9addf SH |
2125 | error_propagate(errp, local_err); |
2126 | return; | |
2127 | } | |
2128 | ||
f67503e5 | 2129 | target_bs = NULL; |
ddf5636d | 2130 | ret = bdrv_open(&target_bs, target, NULL, NULL, flags, drv, &local_err); |
99a9addf | 2131 | if (ret < 0) { |
34b5d2c6 | 2132 | error_propagate(errp, local_err); |
99a9addf SH |
2133 | return; |
2134 | } | |
2135 | ||
fc5d3f84 | 2136 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
2137 | block_job_cb, bs, &local_err); |
2138 | if (local_err != NULL) { | |
4f6fd349 | 2139 | bdrv_unref(target_bs); |
99a9addf SH |
2140 | error_propagate(errp, local_err); |
2141 | return; | |
2142 | } | |
99a9addf SH |
2143 | } |
2144 | ||
c13163fb BC |
2145 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
2146 | { | |
2147 | return bdrv_named_nodes_list(); | |
2148 | } | |
2149 | ||
08e4ed6c PB |
2150 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
2151 | ||
d9b902db PB |
2152 | void qmp_drive_mirror(const char *device, const char *target, |
2153 | bool has_format, const char *format, | |
4c828dc6 | 2154 | bool has_node_name, const char *node_name, |
09158f00 | 2155 | bool has_replaces, const char *replaces, |
d9b902db PB |
2156 | enum MirrorSyncMode sync, |
2157 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 2158 | bool has_speed, int64_t speed, |
eee13dfe | 2159 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 2160 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
2161 | bool has_on_source_error, BlockdevOnError on_source_error, |
2162 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2163 | Error **errp) | |
d9b902db | 2164 | { |
d9b902db PB |
2165 | BlockDriverState *bs; |
2166 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
2167 | BlockDriver *drv = NULL; |
2168 | Error *local_err = NULL; | |
4c828dc6 | 2169 | QDict *options = NULL; |
d9b902db | 2170 | int flags; |
ac3c5d83 | 2171 | int64_t size; |
d9b902db PB |
2172 | int ret; |
2173 | ||
2174 | if (!has_speed) { | |
2175 | speed = 0; | |
2176 | } | |
b952b558 PB |
2177 | if (!has_on_source_error) { |
2178 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2179 | } | |
2180 | if (!has_on_target_error) { | |
2181 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2182 | } | |
d9b902db PB |
2183 | if (!has_mode) { |
2184 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2185 | } | |
eee13dfe PB |
2186 | if (!has_granularity) { |
2187 | granularity = 0; | |
2188 | } | |
08e4ed6c PB |
2189 | if (!has_buf_size) { |
2190 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
2191 | } | |
2192 | ||
eee13dfe | 2193 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
3cbbe9fd SH |
2194 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
2195 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
2196 | return; |
2197 | } | |
2198 | if (granularity & (granularity - 1)) { | |
3cbbe9fd | 2199 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", "power of 2"); |
eee13dfe PB |
2200 | return; |
2201 | } | |
d9b902db PB |
2202 | |
2203 | bs = bdrv_find(device); | |
2204 | if (!bs) { | |
2205 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2206 | return; | |
2207 | } | |
2208 | ||
2209 | if (!bdrv_is_inserted(bs)) { | |
2210 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2211 | return; | |
2212 | } | |
2213 | ||
2214 | if (!has_format) { | |
2215 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2216 | } | |
2217 | if (format) { | |
2218 | drv = bdrv_find_format(format); | |
2219 | if (!drv) { | |
2220 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
2221 | return; | |
2222 | } | |
2223 | } | |
2224 | ||
3718d8ab | 2225 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) { |
d9b902db PB |
2226 | return; |
2227 | } | |
2228 | ||
2229 | flags = bs->open_flags | BDRV_O_RDWR; | |
2230 | source = bs->backing_hd; | |
2231 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
2232 | sync = MIRROR_SYNC_MODE_FULL; | |
2233 | } | |
117e0c82 HR |
2234 | if (sync == MIRROR_SYNC_MODE_NONE) { |
2235 | source = bs; | |
2236 | } | |
d9b902db | 2237 | |
ac3c5d83 SH |
2238 | size = bdrv_getlength(bs); |
2239 | if (size < 0) { | |
2240 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2241 | return; | |
2242 | } | |
2243 | ||
09158f00 BC |
2244 | if (has_replaces) { |
2245 | BlockDriverState *to_replace_bs; | |
2246 | ||
2247 | if (!has_node_name) { | |
2248 | error_setg(errp, "a node-name must be provided when replacing a" | |
2249 | " named node of the graph"); | |
2250 | return; | |
2251 | } | |
2252 | ||
2253 | to_replace_bs = check_to_replace_node(replaces, &local_err); | |
2254 | ||
2255 | if (!to_replace_bs) { | |
2256 | error_propagate(errp, local_err); | |
2257 | return; | |
2258 | } | |
2259 | ||
2260 | if (size != bdrv_getlength(to_replace_bs)) { | |
2261 | error_setg(errp, "cannot replace image with a mirror image of " | |
2262 | "different size"); | |
2263 | return; | |
2264 | } | |
2265 | } | |
2266 | ||
14526864 HR |
2267 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
2268 | && mode != NEW_IMAGE_MODE_EXISTING) | |
2269 | { | |
d9b902db PB |
2270 | /* create new image w/o backing file */ |
2271 | assert(format && drv); | |
cf8f2426 | 2272 | bdrv_img_create(target, format, |
f382d43a | 2273 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
2274 | } else { |
2275 | switch (mode) { | |
2276 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
2277 | break; |
2278 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
2279 | /* create new image with backing file */ | |
cf8f2426 LC |
2280 | bdrv_img_create(target, format, |
2281 | source->filename, | |
2282 | source->drv->format_name, | |
f382d43a | 2283 | NULL, size, flags, &local_err, false); |
d9b902db PB |
2284 | break; |
2285 | default: | |
2286 | abort(); | |
2287 | } | |
2288 | } | |
2289 | ||
84d18f06 | 2290 | if (local_err) { |
cf8f2426 | 2291 | error_propagate(errp, local_err); |
d9b902db PB |
2292 | return; |
2293 | } | |
2294 | ||
4c828dc6 BC |
2295 | if (has_node_name) { |
2296 | options = qdict_new(); | |
2297 | qdict_put(options, "node-name", qstring_from_str(node_name)); | |
2298 | } | |
2299 | ||
b812f671 PB |
2300 | /* Mirroring takes care of copy-on-write using the source's backing |
2301 | * file. | |
2302 | */ | |
f67503e5 | 2303 | target_bs = NULL; |
4c828dc6 BC |
2304 | ret = bdrv_open(&target_bs, target, NULL, options, |
2305 | flags | BDRV_O_NO_BACKING, drv, &local_err); | |
d9b902db | 2306 | if (ret < 0) { |
34b5d2c6 | 2307 | error_propagate(errp, local_err); |
d9b902db PB |
2308 | return; |
2309 | } | |
2310 | ||
09158f00 BC |
2311 | /* pass the node name to replace to mirror start since it's loose coupling |
2312 | * and will allow to check whether the node still exist at mirror completion | |
2313 | */ | |
2314 | mirror_start(bs, target_bs, | |
2315 | has_replaces ? replaces : NULL, | |
2316 | speed, granularity, buf_size, sync, | |
eee13dfe | 2317 | on_source_error, on_target_error, |
b952b558 | 2318 | block_job_cb, bs, &local_err); |
d9b902db | 2319 | if (local_err != NULL) { |
4f6fd349 | 2320 | bdrv_unref(target_bs); |
d9b902db PB |
2321 | error_propagate(errp, local_err); |
2322 | return; | |
2323 | } | |
d9b902db PB |
2324 | } |
2325 | ||
2d47c6e9 SH |
2326 | static BlockJob *find_block_job(const char *device) |
2327 | { | |
2328 | BlockDriverState *bs; | |
2329 | ||
2330 | bs = bdrv_find(device); | |
2331 | if (!bs || !bs->job) { | |
2332 | return NULL; | |
2333 | } | |
2334 | return bs->job; | |
2335 | } | |
2336 | ||
882ec7ce | 2337 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
2338 | { |
2339 | BlockJob *job = find_block_job(device); | |
2340 | ||
2341 | if (!job) { | |
7ef15070 | 2342 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
2343 | return; |
2344 | } | |
2345 | ||
882ec7ce | 2346 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 2347 | } |
370521a1 | 2348 | |
6e37fb81 PB |
2349 | void qmp_block_job_cancel(const char *device, |
2350 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
2351 | { |
2352 | BlockJob *job = find_block_job(device); | |
2353 | ||
6e37fb81 PB |
2354 | if (!has_force) { |
2355 | force = false; | |
2356 | } | |
2357 | ||
370521a1 | 2358 | if (!job) { |
7ef15070 | 2359 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
2360 | return; |
2361 | } | |
6e37fb81 | 2362 | if (job->paused && !force) { |
f231b88d CR |
2363 | error_setg(errp, "The block job for device '%s' is currently paused", |
2364 | device); | |
8acc72a4 PB |
2365 | return; |
2366 | } | |
370521a1 SH |
2367 | |
2368 | trace_qmp_block_job_cancel(job); | |
2369 | block_job_cancel(job); | |
2370 | } | |
fb5458cd | 2371 | |
6e37fb81 PB |
2372 | void qmp_block_job_pause(const char *device, Error **errp) |
2373 | { | |
2374 | BlockJob *job = find_block_job(device); | |
2375 | ||
2376 | if (!job) { | |
2377 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2378 | return; | |
2379 | } | |
2380 | ||
2381 | trace_qmp_block_job_pause(job); | |
2382 | block_job_pause(job); | |
2383 | } | |
2384 | ||
2385 | void qmp_block_job_resume(const char *device, Error **errp) | |
2386 | { | |
2387 | BlockJob *job = find_block_job(device); | |
2388 | ||
2389 | if (!job) { | |
2390 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2391 | return; | |
2392 | } | |
2393 | ||
2394 | trace_qmp_block_job_resume(job); | |
2395 | block_job_resume(job); | |
2396 | } | |
2397 | ||
aeae883b PB |
2398 | void qmp_block_job_complete(const char *device, Error **errp) |
2399 | { | |
2400 | BlockJob *job = find_block_job(device); | |
2401 | ||
2402 | if (!job) { | |
2403 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2404 | return; | |
2405 | } | |
2406 | ||
2407 | trace_qmp_block_job_complete(job); | |
2408 | block_job_complete(job, errp); | |
2409 | } | |
2410 | ||
fa40e656 JC |
2411 | void qmp_change_backing_file(const char *device, |
2412 | const char *image_node_name, | |
2413 | const char *backing_file, | |
2414 | Error **errp) | |
2415 | { | |
2416 | BlockDriverState *bs = NULL; | |
2417 | BlockDriverState *image_bs = NULL; | |
2418 | Error *local_err = NULL; | |
2419 | bool ro; | |
2420 | int open_flags; | |
2421 | int ret; | |
2422 | ||
2423 | /* find the top layer BDS of the chain */ | |
2424 | bs = bdrv_find(device); | |
2425 | if (!bs) { | |
2426 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2427 | return; | |
2428 | } | |
2429 | ||
2430 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); | |
2431 | if (local_err) { | |
2432 | error_propagate(errp, local_err); | |
2433 | return; | |
2434 | } | |
2435 | ||
2436 | if (!image_bs) { | |
2437 | error_setg(errp, "image file not found"); | |
2438 | return; | |
2439 | } | |
2440 | ||
2441 | if (bdrv_find_base(image_bs) == image_bs) { | |
2442 | error_setg(errp, "not allowing backing file change on an image " | |
2443 | "without a backing file"); | |
2444 | return; | |
2445 | } | |
2446 | ||
2447 | /* even though we are not necessarily operating on bs, we need it to | |
2448 | * determine if block ops are currently prohibited on the chain */ | |
2449 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
2450 | return; | |
2451 | } | |
2452 | ||
2453 | /* final sanity check */ | |
2454 | if (!bdrv_chain_contains(bs, image_bs)) { | |
2455 | error_setg(errp, "'%s' and image file are not in the same chain", | |
2456 | device); | |
2457 | return; | |
2458 | } | |
2459 | ||
2460 | /* if not r/w, reopen to make r/w */ | |
2461 | open_flags = image_bs->open_flags; | |
2462 | ro = bdrv_is_read_only(image_bs); | |
2463 | ||
2464 | if (ro) { | |
2465 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
2466 | if (local_err) { | |
2467 | error_propagate(errp, local_err); | |
2468 | return; | |
2469 | } | |
2470 | } | |
2471 | ||
2472 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
2473 | image_bs->drv ? image_bs->drv->format_name : ""); | |
2474 | ||
2475 | if (ret < 0) { | |
2476 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
2477 | backing_file); | |
2478 | /* don't exit here, so we can try to restore open flags if | |
2479 | * appropriate */ | |
2480 | } | |
2481 | ||
2482 | if (ro) { | |
2483 | bdrv_reopen(image_bs, open_flags, &local_err); | |
2484 | if (local_err) { | |
2485 | error_propagate(errp, local_err); /* will preserve prior errp */ | |
2486 | } | |
2487 | } | |
2488 | } | |
2489 | ||
d26c9a15 KW |
2490 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
2491 | { | |
2492 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
8ae8e904 | 2493 | DriveInfo *dinfo; |
d26c9a15 KW |
2494 | QObject *obj; |
2495 | QDict *qdict; | |
d26c9a15 KW |
2496 | Error *local_err = NULL; |
2497 | ||
2498 | /* Require an ID in the top level */ | |
2499 | if (!options->has_id) { | |
2500 | error_setg(errp, "Block device needs an ID"); | |
2501 | goto fail; | |
2502 | } | |
2503 | ||
60e19e06 | 2504 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
d26c9a15 | 2505 | * cache.direct=false instead of silently switching to aio=threads, except |
60e19e06 | 2506 | * when called from drive_new(). |
d26c9a15 KW |
2507 | * |
2508 | * For now, simply forbidding the combination for all drivers will do. */ | |
2509 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
c6e0bd9b KW |
2510 | bool direct = options->has_cache && |
2511 | options->cache->has_direct && | |
2512 | options->cache->direct; | |
2513 | if (!direct) { | |
d26c9a15 KW |
2514 | error_setg(errp, "aio=native requires cache.direct=true"); |
2515 | goto fail; | |
2516 | } | |
2517 | } | |
2518 | ||
2519 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), | |
2520 | &options, NULL, &local_err); | |
84d18f06 | 2521 | if (local_err) { |
d26c9a15 KW |
2522 | error_propagate(errp, local_err); |
2523 | goto fail; | |
2524 | } | |
2525 | ||
2526 | obj = qmp_output_get_qobject(ov); | |
2527 | qdict = qobject_to_qdict(obj); | |
2528 | ||
2529 | qdict_flatten(qdict); | |
2530 | ||
8ae8e904 | 2531 | dinfo = blockdev_init(NULL, qdict, &local_err); |
84d18f06 | 2532 | if (local_err) { |
b681072d | 2533 | error_propagate(errp, local_err); |
d26c9a15 KW |
2534 | goto fail; |
2535 | } | |
2536 | ||
8ae8e904 | 2537 | if (bdrv_key_required(dinfo->bdrv)) { |
60e19e06 | 2538 | drive_del(dinfo); |
8ae8e904 KW |
2539 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
2540 | goto fail; | |
2541 | } | |
2542 | ||
d26c9a15 KW |
2543 | fail: |
2544 | qmp_output_visitor_cleanup(ov); | |
2545 | } | |
2546 | ||
fb5458cd SH |
2547 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
2548 | { | |
2549 | BlockJobInfoList **prev = opaque; | |
2550 | BlockJob *job = bs->job; | |
2551 | ||
2552 | if (job) { | |
30e628b7 PB |
2553 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
2554 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
2555 | (*prev)->next = elem; |
2556 | *prev = elem; | |
2557 | } | |
2558 | } | |
2559 | ||
2560 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
2561 | { | |
2562 | /* Dummy is a fake list element for holding the head pointer */ | |
2563 | BlockJobInfoList dummy = {}; | |
2564 | BlockJobInfoList *prev = &dummy; | |
2565 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
2566 | return dummy.next; | |
2567 | } | |
4d454574 | 2568 | |
0006383e | 2569 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 2570 | .name = "drive", |
0006383e | 2571 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
2572 | .desc = { |
2573 | { | |
4d454574 PB |
2574 | .name = "snapshot", |
2575 | .type = QEMU_OPT_BOOL, | |
2576 | .help = "enable/disable snapshot mode", | |
a9384aff PB |
2577 | },{ |
2578 | .name = "discard", | |
2579 | .type = QEMU_OPT_STRING, | |
2580 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 2581 | },{ |
29c4e2b5 KW |
2582 | .name = "cache.writeback", |
2583 | .type = QEMU_OPT_BOOL, | |
2584 | .help = "enables writeback mode for any caches", | |
2585 | },{ | |
2586 | .name = "cache.direct", | |
2587 | .type = QEMU_OPT_BOOL, | |
2588 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
2589 | },{ | |
2590 | .name = "cache.no-flush", | |
2591 | .type = QEMU_OPT_BOOL, | |
2592 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
2593 | },{ |
2594 | .name = "aio", | |
2595 | .type = QEMU_OPT_STRING, | |
2596 | .help = "host AIO implementation (threads, native)", | |
2597 | },{ | |
2598 | .name = "format", | |
2599 | .type = QEMU_OPT_STRING, | |
2600 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
2601 | },{ |
2602 | .name = "rerror", | |
2603 | .type = QEMU_OPT_STRING, | |
2604 | .help = "read error action", | |
2605 | },{ | |
2606 | .name = "werror", | |
2607 | .type = QEMU_OPT_STRING, | |
2608 | .help = "write error action", | |
4d454574 | 2609 | },{ |
0f227a94 | 2610 | .name = "read-only", |
4d454574 PB |
2611 | .type = QEMU_OPT_BOOL, |
2612 | .help = "open drive file as read-only", | |
2613 | },{ | |
57975222 | 2614 | .name = "throttling.iops-total", |
4d454574 PB |
2615 | .type = QEMU_OPT_NUMBER, |
2616 | .help = "limit total I/O operations per second", | |
2617 | },{ | |
57975222 | 2618 | .name = "throttling.iops-read", |
4d454574 PB |
2619 | .type = QEMU_OPT_NUMBER, |
2620 | .help = "limit read operations per second", | |
2621 | },{ | |
57975222 | 2622 | .name = "throttling.iops-write", |
4d454574 PB |
2623 | .type = QEMU_OPT_NUMBER, |
2624 | .help = "limit write operations per second", | |
2625 | },{ | |
57975222 | 2626 | .name = "throttling.bps-total", |
4d454574 PB |
2627 | .type = QEMU_OPT_NUMBER, |
2628 | .help = "limit total bytes per second", | |
2629 | },{ | |
57975222 | 2630 | .name = "throttling.bps-read", |
4d454574 PB |
2631 | .type = QEMU_OPT_NUMBER, |
2632 | .help = "limit read bytes per second", | |
2633 | },{ | |
57975222 | 2634 | .name = "throttling.bps-write", |
4d454574 PB |
2635 | .type = QEMU_OPT_NUMBER, |
2636 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2637 | },{ |
2638 | .name = "throttling.iops-total-max", | |
2639 | .type = QEMU_OPT_NUMBER, | |
2640 | .help = "I/O operations burst", | |
2641 | },{ | |
2642 | .name = "throttling.iops-read-max", | |
2643 | .type = QEMU_OPT_NUMBER, | |
2644 | .help = "I/O operations read burst", | |
2645 | },{ | |
2646 | .name = "throttling.iops-write-max", | |
2647 | .type = QEMU_OPT_NUMBER, | |
2648 | .help = "I/O operations write burst", | |
2649 | },{ | |
2650 | .name = "throttling.bps-total-max", | |
2651 | .type = QEMU_OPT_NUMBER, | |
2652 | .help = "total bytes burst", | |
2653 | },{ | |
2654 | .name = "throttling.bps-read-max", | |
2655 | .type = QEMU_OPT_NUMBER, | |
2656 | .help = "total bytes read burst", | |
2657 | },{ | |
2658 | .name = "throttling.bps-write-max", | |
2659 | .type = QEMU_OPT_NUMBER, | |
2660 | .help = "total bytes write burst", | |
2024c1df BC |
2661 | },{ |
2662 | .name = "throttling.iops-size", | |
2663 | .type = QEMU_OPT_NUMBER, | |
2664 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2665 | },{ |
2666 | .name = "copy-on-read", | |
2667 | .type = QEMU_OPT_BOOL, | |
2668 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
2669 | },{ |
2670 | .name = "detect-zeroes", | |
2671 | .type = QEMU_OPT_STRING, | |
2672 | .help = "try to optimize zero writes (off, on, unmap)", | |
4d454574 PB |
2673 | }, |
2674 | { /* end of list */ } | |
2675 | }, | |
2676 | }; | |
0006383e KW |
2677 | |
2678 | QemuOptsList qemu_drive_opts = { | |
2679 | .name = "drive", | |
2680 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2681 | .desc = { | |
492fdc6f KW |
2682 | /* |
2683 | * no elements => accept any params | |
2684 | * validation will happen later | |
2685 | */ | |
0006383e KW |
2686 | { /* end of list */ } |
2687 | }, | |
2688 | }; |