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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 | ||
a66c9dc7 JS |
169 | bool drive_check_orphaned(void) |
170 | { | |
171 | DriveInfo *dinfo; | |
172 | bool rs = false; | |
173 | ||
174 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
175 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ | |
176 | /* Unless this is a default drive, this may be an oversight. */ | |
177 | if (!dinfo->bdrv->dev && !dinfo->is_default && | |
178 | dinfo->type != IF_NONE) { | |
179 | fprintf(stderr, "Warning: Orphaned drive without device: " | |
180 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", | |
181 | dinfo->id, dinfo->bdrv->filename, if_name[dinfo->type], | |
182 | dinfo->bus, dinfo->unit); | |
183 | rs = true; | |
184 | } | |
185 | } | |
186 | ||
187 | return rs; | |
188 | } | |
189 | ||
f1bd51ac MA |
190 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
191 | { | |
192 | return drive_get(type, | |
193 | drive_index_to_bus_id(type, index), | |
194 | drive_index_to_unit_id(type, index)); | |
195 | } | |
196 | ||
666daa68 MA |
197 | int drive_get_max_bus(BlockInterfaceType type) |
198 | { | |
199 | int max_bus; | |
200 | DriveInfo *dinfo; | |
201 | ||
202 | max_bus = -1; | |
203 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
204 | if(dinfo->type == type && | |
205 | dinfo->bus > max_bus) | |
206 | max_bus = dinfo->bus; | |
207 | } | |
208 | return max_bus; | |
209 | } | |
210 | ||
13839974 MA |
211 | /* Get a block device. This should only be used for single-drive devices |
212 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
213 | appropriate bus. */ | |
214 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
215 | { | |
216 | static int next_block_unit[IF_COUNT]; | |
217 | ||
218 | return drive_get(type, 0, next_block_unit[type]++); | |
219 | } | |
220 | ||
e4700e59 | 221 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
222 | { |
223 | DriveInfo *dinfo; | |
224 | ||
225 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
226 | if (dinfo->bdrv == bs) { |
227 | return dinfo; | |
228 | } | |
666daa68 | 229 | } |
e4700e59 | 230 | return NULL; |
666daa68 MA |
231 | } |
232 | ||
666daa68 MA |
233 | static void bdrv_format_print(void *opaque, const char *name) |
234 | { | |
807105a7 | 235 | error_printf(" %s", name); |
666daa68 MA |
236 | } |
237 | ||
ae60e8e3 | 238 | void drive_del(DriveInfo *dinfo) |
666daa68 | 239 | { |
3ae59580 MA |
240 | bdrv_unref(dinfo->bdrv); |
241 | } | |
242 | ||
243 | void drive_info_del(DriveInfo *dinfo) | |
244 | { | |
245 | if (!dinfo) { | |
246 | return; | |
247 | } | |
fbf28a43 | 248 | qemu_opts_del(dinfo->opts); |
7267c094 | 249 | g_free(dinfo->id); |
666daa68 | 250 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 251 | g_free(dinfo->serial); |
7267c094 | 252 | g_free(dinfo); |
666daa68 MA |
253 | } |
254 | ||
aa398a5c SH |
255 | typedef struct { |
256 | QEMUBH *bh; | |
fa510ebf FZ |
257 | BlockDriverState *bs; |
258 | } BDRVPutRefBH; | |
aa398a5c | 259 | |
fa510ebf | 260 | static void bdrv_put_ref_bh(void *opaque) |
aa398a5c | 261 | { |
fa510ebf | 262 | BDRVPutRefBH *s = opaque; |
aa398a5c | 263 | |
fa510ebf | 264 | bdrv_unref(s->bs); |
aa398a5c SH |
265 | qemu_bh_delete(s->bh); |
266 | g_free(s); | |
267 | } | |
268 | ||
269 | /* | |
fa510ebf | 270 | * Release a BDS reference in a BH |
aa398a5c | 271 | * |
fa510ebf FZ |
272 | * It is not safe to use bdrv_unref() from a callback function when the callers |
273 | * still need the BlockDriverState. In such cases we schedule a BH to release | |
274 | * the reference. | |
aa398a5c | 275 | */ |
fa510ebf | 276 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
aa398a5c | 277 | { |
fa510ebf | 278 | BDRVPutRefBH *s; |
aa398a5c | 279 | |
fa510ebf FZ |
280 | s = g_new(BDRVPutRefBH, 1); |
281 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); | |
282 | s->bs = bs; | |
aa398a5c SH |
283 | qemu_bh_schedule(s->bh); |
284 | } | |
285 | ||
b681072d | 286 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
287 | { |
288 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 289 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 290 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 291 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 292 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 293 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 294 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 295 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 296 | } else { |
b681072d KW |
297 | error_setg(errp, "'%s' invalid %s error action", |
298 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
299 | return -1; |
300 | } | |
301 | } | |
302 | ||
cc0681c4 | 303 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 304 | { |
cc0681c4 BC |
305 | if (throttle_conflicting(cfg)) { |
306 | error_setg(errp, "bps/iops/max total values and read/write values" | |
307 | " cannot be used at the same time"); | |
0563e191 ZYW |
308 | return false; |
309 | } | |
310 | ||
cc0681c4 BC |
311 | if (!throttle_is_valid(cfg)) { |
312 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
313 | return false; |
314 | } | |
315 | ||
0563e191 ZYW |
316 | return true; |
317 | } | |
318 | ||
33cb7dc8 KW |
319 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
320 | ||
f298d071 | 321 | /* Takes the ownership of bs_opts */ |
d095b465 | 322 | static DriveInfo *blockdev_init(const char *file, QDict *bs_opts, |
b681072d | 323 | Error **errp) |
666daa68 MA |
324 | { |
325 | const char *buf; | |
666daa68 MA |
326 | int ro = 0; |
327 | int bdrv_flags = 0; | |
328 | int on_read_error, on_write_error; | |
a0f1eab1 | 329 | BlockDriverState *bs; |
666daa68 | 330 | DriveInfo *dinfo; |
cc0681c4 | 331 | ThrottleConfig cfg; |
666daa68 | 332 | int snapshot = 0; |
fb0490f6 | 333 | bool copy_on_read; |
666daa68 | 334 | int ret; |
c546194f | 335 | Error *error = NULL; |
0006383e | 336 | QemuOpts *opts; |
0006383e | 337 | const char *id; |
74fe54f2 | 338 | bool has_driver_specific_opts; |
465bee1d | 339 | BlockdevDetectZeroesOptions detect_zeroes; |
6db5f5d6 | 340 | BlockDriver *drv = NULL; |
666daa68 | 341 | |
f298d071 KW |
342 | /* Check common options by copying from bs_opts to opts, all other options |
343 | * stay in bs_opts for processing by bdrv_open(). */ | |
344 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 345 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 346 | if (error) { |
b681072d | 347 | error_propagate(errp, error); |
6376f952 | 348 | goto err_no_opts; |
0006383e KW |
349 | } |
350 | ||
0006383e | 351 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 352 | if (error) { |
b681072d | 353 | error_propagate(errp, error); |
ec9c10d2 | 354 | goto early_err; |
0006383e KW |
355 | } |
356 | ||
357 | if (id) { | |
358 | qdict_del(bs_opts, "id"); | |
359 | } | |
360 | ||
74fe54f2 KW |
361 | has_driver_specific_opts = !!qdict_size(bs_opts); |
362 | ||
666daa68 | 363 | /* extract parameters */ |
666daa68 | 364 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
0f227a94 | 365 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 366 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 | 367 | |
a9384aff PB |
368 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
369 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
b681072d | 370 | error_setg(errp, "invalid discard option"); |
ec9c10d2 | 371 | goto early_err; |
a9384aff PB |
372 | } |
373 | } | |
374 | ||
29c4e2b5 KW |
375 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
376 | bdrv_flags |= BDRV_O_CACHE_WB; | |
377 | } | |
378 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
379 | bdrv_flags |= BDRV_O_NOCACHE; | |
380 | } | |
1df6fa4b | 381 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
29c4e2b5 | 382 | bdrv_flags |= BDRV_O_NO_FLUSH; |
666daa68 MA |
383 | } |
384 | ||
385 | #ifdef CONFIG_LINUX_AIO | |
386 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
387 | if (!strcmp(buf, "native")) { | |
388 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
389 | } else if (!strcmp(buf, "threads")) { | |
390 | /* this is the default */ | |
391 | } else { | |
b681072d | 392 | error_setg(errp, "invalid aio option"); |
ec9c10d2 | 393 | goto early_err; |
666daa68 MA |
394 | } |
395 | } | |
396 | #endif | |
397 | ||
398 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
399 | if (is_help_option(buf)) { |
400 | error_printf("Supported formats:"); | |
401 | bdrv_iterate_format(bdrv_format_print, NULL); | |
402 | error_printf("\n"); | |
ec9c10d2 | 403 | goto early_err; |
666daa68 | 404 | } |
74fe54f2 | 405 | |
8f94a6e4 | 406 | drv = bdrv_find_format(buf); |
6db5f5d6 | 407 | if (!drv) { |
b681072d | 408 | error_setg(errp, "'%s' invalid format", buf); |
ec9c10d2 | 409 | goto early_err; |
6db5f5d6 | 410 | } |
666daa68 MA |
411 | } |
412 | ||
0563e191 | 413 | /* disk I/O throttling */ |
cc0681c4 BC |
414 | memset(&cfg, 0, sizeof(cfg)); |
415 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 416 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 417 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 418 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 419 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 420 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 421 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 422 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 423 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 424 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 425 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 426 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 427 | |
3e9fab69 BC |
428 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
429 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
430 | cfg.buckets[THROTTLE_BPS_READ].max = | |
431 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
432 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
433 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
434 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
435 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
436 | cfg.buckets[THROTTLE_OPS_READ].max = | |
437 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
438 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
439 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 440 | |
2024c1df | 441 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
442 | |
443 | if (!check_throttle_config(&cfg, &error)) { | |
b681072d | 444 | error_propagate(errp, error); |
ec9c10d2 | 445 | goto early_err; |
0563e191 ZYW |
446 | } |
447 | ||
92aa5c6d | 448 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 449 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 450 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 451 | if (error) { |
b681072d | 452 | error_propagate(errp, error); |
ec9c10d2 | 453 | goto early_err; |
666daa68 MA |
454 | } |
455 | } | |
456 | ||
92aa5c6d | 457 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 458 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 459 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 460 | if (error) { |
b681072d | 461 | error_propagate(errp, error); |
ec9c10d2 | 462 | goto early_err; |
666daa68 MA |
463 | } |
464 | } | |
465 | ||
465bee1d | 466 | detect_zeroes = |
9e7dac7c PL |
467 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, |
468 | qemu_opt_get(opts, "detect-zeroes"), | |
469 | BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX, | |
470 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, | |
471 | &error); | |
465bee1d PL |
472 | if (error) { |
473 | error_propagate(errp, error); | |
474 | goto early_err; | |
475 | } | |
476 | ||
477 | if (detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && | |
478 | !(bdrv_flags & BDRV_O_UNMAP)) { | |
479 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " | |
480 | "without setting discard operation to unmap"); | |
481 | goto early_err; | |
482 | } | |
483 | ||
326642bc | 484 | /* init */ |
a0f1eab1 MA |
485 | bs = bdrv_new(qemu_opts_id(opts), errp); |
486 | if (!bs) { | |
487 | goto early_err; | |
98522f63 | 488 | } |
a0f1eab1 MA |
489 | bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
490 | bs->read_only = ro; | |
491 | bs->detect_zeroes = detect_zeroes; | |
666daa68 | 492 | |
a0f1eab1 | 493 | bdrv_set_on_error(bs, on_read_error, on_write_error); |
abd7f68d | 494 | |
0563e191 | 495 | /* disk I/O throttling */ |
cc0681c4 | 496 | if (throttle_enabled(&cfg)) { |
a0f1eab1 MA |
497 | bdrv_io_limits_enable(bs); |
498 | bdrv_set_io_limits(bs, &cfg); | |
cc0681c4 | 499 | } |
0563e191 | 500 | |
a0f1eab1 MA |
501 | dinfo = g_malloc0(sizeof(*dinfo)); |
502 | dinfo->id = g_strdup(qemu_opts_id(opts)); | |
503 | dinfo->bdrv = bs; | |
504 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); | |
505 | ||
dd5b0d71 | 506 | if (!file || !*file) { |
74fe54f2 | 507 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
508 | file = NULL; |
509 | } else { | |
ec9c10d2 SH |
510 | QDECREF(bs_opts); |
511 | qemu_opts_del(opts); | |
c2ad1b0c KW |
512 | return dinfo; |
513 | } | |
666daa68 MA |
514 | } |
515 | if (snapshot) { | |
516 | /* always use cache=unsafe with snapshot */ | |
517 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
518 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
519 | } | |
520 | ||
fb0490f6 SH |
521 | if (copy_on_read) { |
522 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
523 | } | |
524 | ||
ed9d4205 BC |
525 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
526 | bdrv_flags |= BDRV_O_INCOMING; | |
527 | } | |
528 | ||
666daa68 MA |
529 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; |
530 | ||
74fe54f2 | 531 | QINCREF(bs_opts); |
a0f1eab1 MA |
532 | ret = bdrv_open(&bs, file, NULL, bs_opts, bdrv_flags, drv, &error); |
533 | assert(bs == dinfo->bdrv); | |
0006383e | 534 | |
666daa68 | 535 | if (ret < 0) { |
b681072d KW |
536 | error_setg(errp, "could not open disk image %s: %s", |
537 | file ?: dinfo->id, error_get_pretty(error)); | |
538 | error_free(error); | |
a9ae2bff | 539 | goto err; |
666daa68 MA |
540 | } |
541 | ||
a0f1eab1 | 542 | if (bdrv_key_required(bs)) { |
666daa68 | 543 | autostart = 0; |
a0f1eab1 | 544 | } |
0006383e | 545 | |
74fe54f2 | 546 | QDECREF(bs_opts); |
0006383e KW |
547 | qemu_opts_del(opts); |
548 | ||
666daa68 | 549 | return dinfo; |
a9ae2bff MA |
550 | |
551 | err: | |
a0f1eab1 | 552 | bdrv_unref(bs); |
ec9c10d2 | 553 | early_err: |
ec9c10d2 | 554 | qemu_opts_del(opts); |
6376f952 MA |
555 | err_no_opts: |
556 | QDECREF(bs_opts); | |
a9ae2bff | 557 | return NULL; |
666daa68 MA |
558 | } |
559 | ||
5abbf0ee KW |
560 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
561 | Error **errp) | |
57975222 KW |
562 | { |
563 | const char *value; | |
564 | ||
565 | value = qemu_opt_get(opts, from); | |
566 | if (value) { | |
5abbf0ee KW |
567 | if (qemu_opt_find(opts, to)) { |
568 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
569 | "same time", to, from); | |
570 | return; | |
571 | } | |
20d6cd47 JL |
572 | } |
573 | ||
574 | /* rename all items in opts */ | |
575 | while ((value = qemu_opt_get(opts, from))) { | |
57975222 KW |
576 | qemu_opt_set(opts, to, value); |
577 | qemu_opt_unset(opts, from); | |
578 | } | |
579 | } | |
580 | ||
33cb7dc8 KW |
581 | QemuOptsList qemu_legacy_drive_opts = { |
582 | .name = "drive", | |
583 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
584 | .desc = { | |
585 | { | |
87a899c5 KW |
586 | .name = "bus", |
587 | .type = QEMU_OPT_NUMBER, | |
588 | .help = "bus number", | |
589 | },{ | |
590 | .name = "unit", | |
591 | .type = QEMU_OPT_NUMBER, | |
592 | .help = "unit number (i.e. lun for scsi)", | |
593 | },{ | |
594 | .name = "index", | |
595 | .type = QEMU_OPT_NUMBER, | |
596 | .help = "index number", | |
597 | },{ | |
33cb7dc8 KW |
598 | .name = "media", |
599 | .type = QEMU_OPT_STRING, | |
600 | .help = "media type (disk, cdrom)", | |
593d464b KW |
601 | },{ |
602 | .name = "if", | |
603 | .type = QEMU_OPT_STRING, | |
604 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
605 | },{ |
606 | .name = "cyls", | |
607 | .type = QEMU_OPT_NUMBER, | |
608 | .help = "number of cylinders (ide disk geometry)", | |
609 | },{ | |
610 | .name = "heads", | |
611 | .type = QEMU_OPT_NUMBER, | |
612 | .help = "number of heads (ide disk geometry)", | |
613 | },{ | |
614 | .name = "secs", | |
615 | .type = QEMU_OPT_NUMBER, | |
616 | .help = "number of sectors (ide disk geometry)", | |
617 | },{ | |
618 | .name = "trans", | |
619 | .type = QEMU_OPT_STRING, | |
620 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
621 | },{ |
622 | .name = "boot", | |
623 | .type = QEMU_OPT_BOOL, | |
624 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
625 | },{ |
626 | .name = "addr", | |
627 | .type = QEMU_OPT_STRING, | |
628 | .help = "pci address (virtio only)", | |
bcf83158 KW |
629 | },{ |
630 | .name = "serial", | |
631 | .type = QEMU_OPT_STRING, | |
632 | .help = "disk serial number", | |
d095b465 HR |
633 | },{ |
634 | .name = "file", | |
635 | .type = QEMU_OPT_STRING, | |
636 | .help = "file name", | |
33cb7dc8 | 637 | }, |
0ebd24e0 KW |
638 | |
639 | /* Options that are passed on, but have special semantics with -drive */ | |
640 | { | |
641 | .name = "read-only", | |
642 | .type = QEMU_OPT_BOOL, | |
643 | .help = "open drive file as read-only", | |
ee13ed1c KW |
644 | },{ |
645 | .name = "rerror", | |
646 | .type = QEMU_OPT_STRING, | |
647 | .help = "read error action", | |
648 | },{ | |
649 | .name = "werror", | |
650 | .type = QEMU_OPT_STRING, | |
651 | .help = "write error action", | |
0ebd24e0 KW |
652 | },{ |
653 | .name = "copy-on-read", | |
654 | .type = QEMU_OPT_BOOL, | |
655 | .help = "copy read data from backing file into image file", | |
656 | }, | |
657 | ||
33cb7dc8 KW |
658 | { /* end of list */ } |
659 | }, | |
660 | }; | |
661 | ||
60e19e06 | 662 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 663 | { |
29c4e2b5 | 664 | const char *value; |
33cb7dc8 | 665 | DriveInfo *dinfo = NULL; |
f298d071 | 666 | QDict *bs_opts; |
33cb7dc8 KW |
667 | QemuOpts *legacy_opts; |
668 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 669 | BlockInterfaceType type; |
b41a7338 | 670 | int cyls, heads, secs, translation; |
87a899c5 | 671 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 672 | const char *devaddr; |
ee13ed1c | 673 | const char *werror, *rerror; |
a7fdbcf0 FZ |
674 | bool read_only = false; |
675 | bool copy_on_read; | |
bcf83158 | 676 | const char *serial; |
d095b465 | 677 | const char *filename; |
33cb7dc8 | 678 | Error *local_err = NULL; |
247147fb | 679 | int i; |
29c4e2b5 | 680 | |
57975222 | 681 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
682 | static const struct { |
683 | const char *from; | |
684 | const char *to; | |
685 | } opt_renames[] = { | |
686 | { "iops", "throttling.iops-total" }, | |
687 | { "iops_rd", "throttling.iops-read" }, | |
688 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 689 | |
247147fb KW |
690 | { "bps", "throttling.bps-total" }, |
691 | { "bps_rd", "throttling.bps-read" }, | |
692 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 693 | |
247147fb KW |
694 | { "iops_max", "throttling.iops-total-max" }, |
695 | { "iops_rd_max", "throttling.iops-read-max" }, | |
696 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 697 | |
247147fb KW |
698 | { "bps_max", "throttling.bps-total-max" }, |
699 | { "bps_rd_max", "throttling.bps-read-max" }, | |
700 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 701 | |
247147fb | 702 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 703 | |
247147fb KW |
704 | { "readonly", "read-only" }, |
705 | }; | |
706 | ||
707 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
708 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
709 | &local_err); | |
710 | if (local_err) { | |
711 | error_report("%s", error_get_pretty(local_err)); | |
712 | error_free(local_err); | |
713 | return NULL; | |
714 | } | |
247147fb | 715 | } |
0f227a94 | 716 | |
29c4e2b5 KW |
717 | value = qemu_opt_get(all_opts, "cache"); |
718 | if (value) { | |
719 | int flags = 0; | |
720 | ||
721 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
722 | error_report("invalid cache option"); | |
723 | return NULL; | |
724 | } | |
725 | ||
726 | /* Specific options take precedence */ | |
727 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
728 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
729 | !!(flags & BDRV_O_CACHE_WB)); | |
730 | } | |
731 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
732 | qemu_opt_set_bool(all_opts, "cache.direct", | |
733 | !!(flags & BDRV_O_NOCACHE)); | |
734 | } | |
735 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
736 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
737 | !!(flags & BDRV_O_NO_FLUSH)); | |
738 | } | |
739 | qemu_opt_unset(all_opts, "cache"); | |
740 | } | |
741 | ||
f298d071 KW |
742 | /* Get a QDict for processing the options */ |
743 | bs_opts = qdict_new(); | |
744 | qemu_opts_to_qdict(all_opts, bs_opts); | |
745 | ||
87ea75d5 PC |
746 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
747 | &error_abort); | |
33cb7dc8 | 748 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 749 | if (local_err) { |
e8817e7b | 750 | error_report("%s", error_get_pretty(local_err)); |
33cb7dc8 KW |
751 | error_free(local_err); |
752 | goto fail; | |
753 | } | |
754 | ||
26929298 KW |
755 | /* Deprecated option boot=[on|off] */ |
756 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
757 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
758 | "ignored. Future versions will reject this parameter. Please " | |
759 | "update your scripts.\n"); | |
760 | } | |
761 | ||
33cb7dc8 KW |
762 | /* Media type */ |
763 | value = qemu_opt_get(legacy_opts, "media"); | |
764 | if (value) { | |
765 | if (!strcmp(value, "disk")) { | |
766 | media = MEDIA_DISK; | |
767 | } else if (!strcmp(value, "cdrom")) { | |
768 | media = MEDIA_CDROM; | |
a7fdbcf0 | 769 | read_only = true; |
33cb7dc8 KW |
770 | } else { |
771 | error_report("'%s' invalid media", value); | |
772 | goto fail; | |
773 | } | |
774 | } | |
775 | ||
0ebd24e0 | 776 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 777 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
778 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
779 | ||
780 | if (read_only && copy_on_read) { | |
781 | error_report("warning: disabling copy-on-read on read-only drive"); | |
782 | copy_on_read = false; | |
783 | } | |
784 | ||
785 | qdict_put(bs_opts, "read-only", | |
786 | qstring_from_str(read_only ? "on" : "off")); | |
787 | qdict_put(bs_opts, "copy-on-read", | |
788 | qstring_from_str(copy_on_read ? "on" :"off")); | |
789 | ||
593d464b KW |
790 | /* Controller type */ |
791 | value = qemu_opt_get(legacy_opts, "if"); | |
792 | if (value) { | |
793 | for (type = 0; | |
794 | type < IF_COUNT && strcmp(value, if_name[type]); | |
795 | type++) { | |
796 | } | |
797 | if (type == IF_COUNT) { | |
798 | error_report("unsupported bus type '%s'", value); | |
799 | goto fail; | |
800 | } | |
801 | } else { | |
802 | type = block_default_type; | |
803 | } | |
804 | ||
b41a7338 KW |
805 | /* Geometry */ |
806 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
807 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
808 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
809 | ||
810 | if (cyls || heads || secs) { | |
811 | if (cyls < 1) { | |
812 | error_report("invalid physical cyls number"); | |
813 | goto fail; | |
814 | } | |
815 | if (heads < 1) { | |
816 | error_report("invalid physical heads number"); | |
817 | goto fail; | |
818 | } | |
819 | if (secs < 1) { | |
820 | error_report("invalid physical secs number"); | |
821 | goto fail; | |
822 | } | |
823 | } | |
824 | ||
825 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
826 | value = qemu_opt_get(legacy_opts, "trans"); | |
827 | if (value != NULL) { | |
828 | if (!cyls) { | |
829 | error_report("'%s' trans must be used with cyls, heads and secs", | |
830 | value); | |
831 | goto fail; | |
832 | } | |
833 | if (!strcmp(value, "none")) { | |
834 | translation = BIOS_ATA_TRANSLATION_NONE; | |
835 | } else if (!strcmp(value, "lba")) { | |
836 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
837 | } else if (!strcmp(value, "large")) { |
838 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
839 | } else if (!strcmp(value, "rechs")) { | |
840 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
841 | } else if (!strcmp(value, "auto")) { |
842 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
843 | } else { | |
844 | error_report("'%s' invalid translation type", value); | |
845 | goto fail; | |
846 | } | |
847 | } | |
848 | ||
849 | if (media == MEDIA_CDROM) { | |
850 | if (cyls || secs || heads) { | |
851 | error_report("CHS can't be set with media=cdrom"); | |
852 | goto fail; | |
853 | } | |
854 | } | |
855 | ||
87a899c5 KW |
856 | /* Device address specified by bus/unit or index. |
857 | * If none was specified, try to find the first free one. */ | |
858 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
859 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
860 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
861 | ||
862 | max_devs = if_max_devs[type]; | |
863 | ||
864 | if (index != -1) { | |
865 | if (bus_id != 0 || unit_id != -1) { | |
866 | error_report("index cannot be used with bus and unit"); | |
867 | goto fail; | |
868 | } | |
869 | bus_id = drive_index_to_bus_id(type, index); | |
870 | unit_id = drive_index_to_unit_id(type, index); | |
871 | } | |
872 | ||
873 | if (unit_id == -1) { | |
874 | unit_id = 0; | |
875 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
876 | unit_id++; | |
877 | if (max_devs && unit_id >= max_devs) { | |
878 | unit_id -= max_devs; | |
879 | bus_id++; | |
880 | } | |
881 | } | |
882 | } | |
883 | ||
884 | if (max_devs && unit_id >= max_devs) { | |
885 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
886 | goto fail; | |
887 | } | |
888 | ||
889 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
890 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
891 | bus_id, unit_id, index); | |
892 | goto fail; | |
893 | } | |
894 | ||
bcf83158 KW |
895 | /* Serial number */ |
896 | serial = qemu_opt_get(legacy_opts, "serial"); | |
897 | ||
87a899c5 KW |
898 | /* no id supplied -> create one */ |
899 | if (qemu_opts_id(all_opts) == NULL) { | |
900 | char *new_id; | |
901 | const char *mediastr = ""; | |
902 | if (type == IF_IDE || type == IF_SCSI) { | |
903 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
904 | } | |
905 | if (max_devs) { | |
906 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
907 | mediastr, unit_id); | |
908 | } else { | |
909 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
910 | mediastr, unit_id); | |
911 | } | |
912 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
913 | g_free(new_id); | |
914 | } | |
915 | ||
394c7d4d KW |
916 | /* Add virtio block device */ |
917 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
918 | if (devaddr && type != IF_VIRTIO) { | |
919 | error_report("addr is not supported by this bus type"); | |
920 | goto fail; | |
921 | } | |
922 | ||
923 | if (type == IF_VIRTIO) { | |
924 | QemuOpts *devopts; | |
87ea75d5 PC |
925 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
926 | &error_abort); | |
394c7d4d KW |
927 | if (arch_type == QEMU_ARCH_S390X) { |
928 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); | |
929 | } else { | |
930 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); | |
931 | } | |
932 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id")); | |
933 | if (devaddr) { | |
934 | qemu_opt_set(devopts, "addr", devaddr); | |
935 | } | |
936 | } | |
937 | ||
d095b465 HR |
938 | filename = qemu_opt_get(legacy_opts, "file"); |
939 | ||
ee13ed1c KW |
940 | /* Check werror/rerror compatibility with if=... */ |
941 | werror = qemu_opt_get(legacy_opts, "werror"); | |
942 | if (werror != NULL) { | |
943 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
944 | type != IF_NONE) { | |
945 | error_report("werror is not supported by this bus type"); | |
946 | goto fail; | |
947 | } | |
948 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
949 | } | |
950 | ||
951 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
952 | if (rerror != NULL) { | |
953 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
954 | type != IF_NONE) { | |
955 | error_report("rerror is not supported by this bus type"); | |
956 | goto fail; | |
957 | } | |
958 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
959 | } | |
960 | ||
2d246f01 | 961 | /* Actual block device init: Functionality shared with blockdev-add */ |
ee13ed1c | 962 | dinfo = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 963 | bs_opts = NULL; |
2d246f01 | 964 | if (dinfo == NULL) { |
84d18f06 | 965 | if (local_err) { |
e8817e7b | 966 | error_report("%s", error_get_pretty(local_err)); |
b681072d KW |
967 | error_free(local_err); |
968 | } | |
2d246f01 | 969 | goto fail; |
b681072d | 970 | } else { |
84d18f06 | 971 | assert(!local_err); |
2d246f01 KW |
972 | } |
973 | ||
974 | /* Set legacy DriveInfo fields */ | |
975 | dinfo->enable_auto_del = true; | |
f298d071 | 976 | dinfo->opts = all_opts; |
2d246f01 | 977 | |
b41a7338 KW |
978 | dinfo->cyls = cyls; |
979 | dinfo->heads = heads; | |
980 | dinfo->secs = secs; | |
981 | dinfo->trans = translation; | |
982 | ||
ee13ed1c | 983 | dinfo->type = type; |
87a899c5 KW |
984 | dinfo->bus = bus_id; |
985 | dinfo->unit = unit_id; | |
394c7d4d | 986 | dinfo->devaddr = devaddr; |
87a899c5 | 987 | |
bcf83158 KW |
988 | dinfo->serial = g_strdup(serial); |
989 | ||
e34ef046 KW |
990 | switch(type) { |
991 | case IF_IDE: | |
992 | case IF_SCSI: | |
993 | case IF_XEN: | |
994 | case IF_NONE: | |
995 | dinfo->media_cd = media == MEDIA_CDROM; | |
996 | break; | |
997 | default: | |
998 | break; | |
999 | } | |
1000 | ||
2d246f01 | 1001 | fail: |
33cb7dc8 | 1002 | qemu_opts_del(legacy_opts); |
3cb0e25c | 1003 | QDECREF(bs_opts); |
2d246f01 | 1004 | return dinfo; |
57975222 KW |
1005 | } |
1006 | ||
666daa68 MA |
1007 | void do_commit(Monitor *mon, const QDict *qdict) |
1008 | { | |
666daa68 | 1009 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 1010 | BlockDriverState *bs; |
e8877497 | 1011 | int ret; |
666daa68 | 1012 | |
6ab4b5ab | 1013 | if (!strcmp(device, "all")) { |
e8877497 | 1014 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
1015 | } else { |
1016 | bs = bdrv_find(device); | |
ac59eb95 | 1017 | if (!bs) { |
58513bde | 1018 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 1019 | return; |
6ab4b5ab | 1020 | } |
2d3735d3 | 1021 | ret = bdrv_commit(bs); |
58513bde JC |
1022 | } |
1023 | if (ret < 0) { | |
1024 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
1025 | strerror(-ret)); | |
666daa68 MA |
1026 | } |
1027 | } | |
1028 | ||
6cc2a415 PB |
1029 | static void blockdev_do_action(int kind, void *data, Error **errp) |
1030 | { | |
c8a83e85 KW |
1031 | TransactionAction action; |
1032 | TransactionActionList list; | |
6cc2a415 PB |
1033 | |
1034 | action.kind = kind; | |
1035 | action.data = data; | |
1036 | list.value = &action; | |
1037 | list.next = NULL; | |
1038 | qmp_transaction(&list, errp); | |
1039 | } | |
1040 | ||
0901f67e BC |
1041 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1042 | bool has_node_name, const char *node_name, | |
1043 | const char *snapshot_file, | |
1044 | bool has_snapshot_node_name, | |
1045 | const char *snapshot_node_name, | |
6106e249 | 1046 | bool has_format, const char *format, |
0901f67e | 1047 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1048 | { |
6cc2a415 | 1049 | BlockdevSnapshot snapshot = { |
0901f67e | 1050 | .has_device = has_device, |
6cc2a415 | 1051 | .device = (char *) device, |
0901f67e BC |
1052 | .has_node_name = has_node_name, |
1053 | .node_name = (char *) node_name, | |
6cc2a415 | 1054 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1055 | .has_snapshot_node_name = has_snapshot_node_name, |
1056 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1057 | .has_format = has_format, |
1058 | .format = (char *) format, | |
1059 | .has_mode = has_mode, | |
1060 | .mode = mode, | |
1061 | }; | |
c8a83e85 KW |
1062 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
1063 | &snapshot, errp); | |
f8882568 JS |
1064 | } |
1065 | ||
f323bc9e WX |
1066 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1067 | const char *name, | |
1068 | Error **errp) | |
1069 | { | |
1070 | BlockdevSnapshotInternal snapshot = { | |
1071 | .device = (char *) device, | |
1072 | .name = (char *) name | |
1073 | }; | |
1074 | ||
1075 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
1076 | &snapshot, errp); | |
1077 | } | |
1078 | ||
44e3e053 WX |
1079 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1080 | bool has_id, | |
1081 | const char *id, | |
1082 | bool has_name, | |
1083 | const char *name, | |
1084 | Error **errp) | |
1085 | { | |
1086 | BlockDriverState *bs = bdrv_find(device); | |
1087 | QEMUSnapshotInfo sn; | |
1088 | Error *local_err = NULL; | |
1089 | SnapshotInfo *info = NULL; | |
1090 | int ret; | |
1091 | ||
1092 | if (!bs) { | |
1093 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1094 | return NULL; | |
1095 | } | |
1096 | ||
1097 | if (!has_id) { | |
1098 | id = NULL; | |
1099 | } | |
1100 | ||
1101 | if (!has_name) { | |
1102 | name = NULL; | |
1103 | } | |
1104 | ||
1105 | if (!id && !name) { | |
1106 | error_setg(errp, "Name or id must be provided"); | |
1107 | return NULL; | |
1108 | } | |
1109 | ||
1110 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); | |
84d18f06 | 1111 | if (local_err) { |
44e3e053 WX |
1112 | error_propagate(errp, local_err); |
1113 | return NULL; | |
1114 | } | |
1115 | if (!ret) { | |
1116 | error_setg(errp, | |
1117 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1118 | "device '%s'", | |
1119 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
1120 | return NULL; | |
1121 | } | |
1122 | ||
1123 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1124 | if (local_err) { |
44e3e053 WX |
1125 | error_propagate(errp, local_err); |
1126 | return NULL; | |
1127 | } | |
1128 | ||
5839e53b | 1129 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1130 | info->id = g_strdup(sn.id_str); |
1131 | info->name = g_strdup(sn.name); | |
1132 | info->date_nsec = sn.date_nsec; | |
1133 | info->date_sec = sn.date_sec; | |
1134 | info->vm_state_size = sn.vm_state_size; | |
1135 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1136 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1137 | ||
1138 | return info; | |
1139 | } | |
8802d1fd JC |
1140 | |
1141 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 1142 | |
ba5d6ab6 | 1143 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
1144 | |
1145 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
1146 | abort() will be called, clean() will always be called if it present. */ | |
1147 | typedef struct BdrvActionOps { | |
1148 | /* Size of state struct, in bytes. */ | |
1149 | size_t instance_size; | |
1150 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 1151 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 1152 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 1153 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 1154 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 1155 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 1156 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 1157 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
1158 | } BdrvActionOps; |
1159 | ||
1160 | /* | |
1161 | * This structure must be arranged as first member in child type, assuming | |
1162 | * that compiler will also arrange it to the same address with parent instance. | |
1163 | * Later it will be used in free(). | |
1164 | */ | |
ba5d6ab6 | 1165 | struct BlkTransactionState { |
c8a83e85 | 1166 | TransactionAction *action; |
ba0c86a3 | 1167 | const BdrvActionOps *ops; |
ba5d6ab6 | 1168 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
1169 | }; |
1170 | ||
bbe86010 WX |
1171 | /* internal snapshot private data */ |
1172 | typedef struct InternalSnapshotState { | |
1173 | BlkTransactionState common; | |
1174 | BlockDriverState *bs; | |
1175 | QEMUSnapshotInfo sn; | |
1176 | } InternalSnapshotState; | |
1177 | ||
1178 | static void internal_snapshot_prepare(BlkTransactionState *common, | |
1179 | Error **errp) | |
1180 | { | |
f70edf99 | 1181 | Error *local_err = NULL; |
bbe86010 WX |
1182 | const char *device; |
1183 | const char *name; | |
1184 | BlockDriverState *bs; | |
1185 | QEMUSnapshotInfo old_sn, *sn; | |
1186 | bool ret; | |
1187 | qemu_timeval tv; | |
1188 | BlockdevSnapshotInternal *internal; | |
1189 | InternalSnapshotState *state; | |
1190 | int ret1; | |
1191 | ||
1192 | g_assert(common->action->kind == | |
1193 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); | |
1194 | internal = common->action->blockdev_snapshot_internal_sync; | |
1195 | state = DO_UPCAST(InternalSnapshotState, common, common); | |
1196 | ||
1197 | /* 1. parse input */ | |
1198 | device = internal->device; | |
1199 | name = internal->name; | |
1200 | ||
1201 | /* 2. check for validation */ | |
1202 | bs = bdrv_find(device); | |
1203 | if (!bs) { | |
1204 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1205 | return; | |
1206 | } | |
1207 | ||
1208 | if (!bdrv_is_inserted(bs)) { | |
1209 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1210 | return; | |
1211 | } | |
1212 | ||
1213 | if (bdrv_is_read_only(bs)) { | |
1214 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1215 | return; | |
1216 | } | |
1217 | ||
1218 | if (!bdrv_can_snapshot(bs)) { | |
1219 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, | |
1220 | bs->drv->format_name, device, "internal snapshot"); | |
1221 | return; | |
1222 | } | |
1223 | ||
1224 | if (!strlen(name)) { | |
1225 | error_setg(errp, "Name is empty"); | |
1226 | return; | |
1227 | } | |
1228 | ||
1229 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1230 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1231 | &local_err); | |
1232 | if (local_err) { | |
1233 | error_propagate(errp, local_err); | |
bbe86010 WX |
1234 | return; |
1235 | } else if (ret) { | |
1236 | error_setg(errp, | |
1237 | "Snapshot with name '%s' already exists on device '%s'", | |
1238 | name, device); | |
1239 | return; | |
1240 | } | |
1241 | ||
1242 | /* 3. take the snapshot */ | |
1243 | sn = &state->sn; | |
1244 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1245 | qemu_gettimeofday(&tv); | |
1246 | sn->date_sec = tv.tv_sec; | |
1247 | sn->date_nsec = tv.tv_usec * 1000; | |
1248 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1249 | ||
1250 | ret1 = bdrv_snapshot_create(bs, sn); | |
1251 | if (ret1 < 0) { | |
1252 | error_setg_errno(errp, -ret1, | |
1253 | "Failed to create snapshot '%s' on device '%s'", | |
1254 | name, device); | |
1255 | return; | |
1256 | } | |
1257 | ||
1258 | /* 4. succeed, mark a snapshot is created */ | |
1259 | state->bs = bs; | |
1260 | } | |
1261 | ||
1262 | static void internal_snapshot_abort(BlkTransactionState *common) | |
1263 | { | |
1264 | InternalSnapshotState *state = | |
1265 | DO_UPCAST(InternalSnapshotState, common, common); | |
1266 | BlockDriverState *bs = state->bs; | |
1267 | QEMUSnapshotInfo *sn = &state->sn; | |
1268 | Error *local_error = NULL; | |
1269 | ||
1270 | if (!bs) { | |
1271 | return; | |
1272 | } | |
1273 | ||
1274 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1275 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1276 | "device '%s' in abort: %s", | |
1277 | sn->id_str, | |
1278 | sn->name, | |
1279 | bdrv_get_device_name(bs), | |
1280 | error_get_pretty(local_error)); | |
1281 | error_free(local_error); | |
1282 | } | |
1283 | } | |
1284 | ||
ba0c86a3 | 1285 | /* external snapshot private data */ |
ba5d6ab6 SH |
1286 | typedef struct ExternalSnapshotState { |
1287 | BlkTransactionState common; | |
8802d1fd JC |
1288 | BlockDriverState *old_bs; |
1289 | BlockDriverState *new_bs; | |
ba5d6ab6 | 1290 | } ExternalSnapshotState; |
8802d1fd | 1291 | |
ba5d6ab6 | 1292 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
1293 | Error **errp) |
1294 | { | |
9b9877ee WX |
1295 | BlockDriver *drv; |
1296 | int flags, ret; | |
0901f67e | 1297 | QDict *options = NULL; |
9b9877ee | 1298 | Error *local_err = NULL; |
0901f67e | 1299 | bool has_device = false; |
e2a31e87 | 1300 | const char *device; |
0901f67e BC |
1301 | bool has_node_name = false; |
1302 | const char *node_name; | |
1303 | bool has_snapshot_node_name = false; | |
1304 | const char *snapshot_node_name; | |
e2a31e87 WX |
1305 | const char *new_image_file; |
1306 | const char *format = "qcow2"; | |
1307 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
1308 | ExternalSnapshotState *state = |
1309 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1310 | TransactionAction *action = common->action; |
9b9877ee | 1311 | |
e2a31e87 | 1312 | /* get parameters */ |
c8a83e85 | 1313 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 | 1314 | |
0901f67e | 1315 | has_device = action->blockdev_snapshot_sync->has_device; |
e2a31e87 | 1316 | device = action->blockdev_snapshot_sync->device; |
0901f67e BC |
1317 | has_node_name = action->blockdev_snapshot_sync->has_node_name; |
1318 | node_name = action->blockdev_snapshot_sync->node_name; | |
1319 | has_snapshot_node_name = | |
1320 | action->blockdev_snapshot_sync->has_snapshot_node_name; | |
1321 | snapshot_node_name = action->blockdev_snapshot_sync->snapshot_node_name; | |
1322 | ||
e2a31e87 WX |
1323 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; |
1324 | if (action->blockdev_snapshot_sync->has_format) { | |
1325 | format = action->blockdev_snapshot_sync->format; | |
1326 | } | |
1327 | if (action->blockdev_snapshot_sync->has_mode) { | |
1328 | mode = action->blockdev_snapshot_sync->mode; | |
1329 | } | |
1330 | ||
1331 | /* start processing */ | |
9b9877ee WX |
1332 | drv = bdrv_find_format(format); |
1333 | if (!drv) { | |
1334 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1335 | return; | |
1336 | } | |
1337 | ||
0901f67e BC |
1338 | state->old_bs = bdrv_lookup_bs(has_device ? device : NULL, |
1339 | has_node_name ? node_name : NULL, | |
1340 | &local_err); | |
84d18f06 | 1341 | if (local_err) { |
0901f67e BC |
1342 | error_propagate(errp, local_err); |
1343 | return; | |
1344 | } | |
1345 | ||
1346 | if (has_node_name && !has_snapshot_node_name) { | |
1347 | error_setg(errp, "New snapshot node name missing"); | |
1348 | return; | |
1349 | } | |
1350 | ||
1351 | if (has_snapshot_node_name && bdrv_find_node(snapshot_node_name)) { | |
1352 | error_setg(errp, "New snapshot node name already existing"); | |
9b9877ee WX |
1353 | return; |
1354 | } | |
1355 | ||
ba5d6ab6 | 1356 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
1357 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1358 | return; | |
1359 | } | |
1360 | ||
3718d8ab FZ |
1361 | if (bdrv_op_is_blocked(state->old_bs, |
1362 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1363 | return; |
1364 | } | |
1365 | ||
ba5d6ab6 SH |
1366 | if (!bdrv_is_read_only(state->old_bs)) { |
1367 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
1368 | error_set(errp, QERR_IO_ERROR); |
1369 | return; | |
1370 | } | |
1371 | } | |
1372 | ||
212a5a8f | 1373 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
f6186f49 BC |
1374 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); |
1375 | return; | |
1376 | } | |
1377 | ||
ba5d6ab6 | 1378 | flags = state->old_bs->open_flags; |
9b9877ee | 1379 | |
9b9877ee WX |
1380 | /* create new image w/backing file */ |
1381 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1382 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
1383 | state->old_bs->filename, |
1384 | state->old_bs->drv->format_name, | |
9b9877ee | 1385 | NULL, -1, flags, &local_err, false); |
84d18f06 | 1386 | if (local_err) { |
9b9877ee WX |
1387 | error_propagate(errp, local_err); |
1388 | return; | |
1389 | } | |
1390 | } | |
1391 | ||
0901f67e BC |
1392 | if (has_snapshot_node_name) { |
1393 | options = qdict_new(); | |
1394 | qdict_put(options, "node-name", | |
1395 | qstring_from_str(snapshot_node_name)); | |
1396 | } | |
1397 | ||
9b9877ee WX |
1398 | /* TODO Inherit bs->options or only take explicit options with an |
1399 | * extended QMP command? */ | |
f67503e5 | 1400 | assert(state->new_bs == NULL); |
ddf5636d | 1401 | ret = bdrv_open(&state->new_bs, new_image_file, NULL, options, |
34b5d2c6 | 1402 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
f67503e5 | 1403 | /* We will manually add the backing_hd field to the bs later */ |
9b9877ee | 1404 | if (ret != 0) { |
34b5d2c6 | 1405 | error_propagate(errp, local_err); |
9b9877ee WX |
1406 | } |
1407 | } | |
1408 | ||
ba5d6ab6 | 1409 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 1410 | { |
ba5d6ab6 SH |
1411 | ExternalSnapshotState *state = |
1412 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1413 | |
ba5d6ab6 SH |
1414 | /* This removes our old bs and adds the new bs */ |
1415 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1416 | /* We don't need (or want) to use the transactional |
1417 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1418 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 1419 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
1420 | NULL); |
1421 | } | |
1422 | ||
ba5d6ab6 | 1423 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1424 | { |
ba5d6ab6 SH |
1425 | ExternalSnapshotState *state = |
1426 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1427 | if (state->new_bs) { | |
4f6fd349 | 1428 | bdrv_unref(state->new_bs); |
96b86bf7 WX |
1429 | } |
1430 | } | |
1431 | ||
3037f364 SH |
1432 | typedef struct DriveBackupState { |
1433 | BlkTransactionState common; | |
1434 | BlockDriverState *bs; | |
1435 | BlockJob *job; | |
1436 | } DriveBackupState; | |
1437 | ||
1438 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1439 | { | |
1440 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1441 | DriveBackup *backup; | |
1442 | Error *local_err = NULL; | |
1443 | ||
1444 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1445 | backup = common->action->drive_backup; | |
1446 | ||
1447 | qmp_drive_backup(backup->device, backup->target, | |
1448 | backup->has_format, backup->format, | |
b53169ea | 1449 | backup->sync, |
3037f364 SH |
1450 | backup->has_mode, backup->mode, |
1451 | backup->has_speed, backup->speed, | |
1452 | backup->has_on_source_error, backup->on_source_error, | |
1453 | backup->has_on_target_error, backup->on_target_error, | |
1454 | &local_err); | |
84d18f06 | 1455 | if (local_err) { |
3037f364 SH |
1456 | error_propagate(errp, local_err); |
1457 | state->bs = NULL; | |
1458 | state->job = NULL; | |
1459 | return; | |
1460 | } | |
1461 | ||
1462 | state->bs = bdrv_find(backup->device); | |
1463 | state->job = state->bs->job; | |
1464 | } | |
1465 | ||
1466 | static void drive_backup_abort(BlkTransactionState *common) | |
1467 | { | |
1468 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1469 | BlockDriverState *bs = state->bs; | |
1470 | ||
1471 | /* Only cancel if it's the job we started */ | |
1472 | if (bs && bs->job && bs->job == state->job) { | |
1473 | block_job_cancel_sync(bs->job); | |
1474 | } | |
1475 | } | |
1476 | ||
78b18b78 SH |
1477 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1478 | { | |
1479 | error_setg(errp, "Transaction aborted using Abort action"); | |
1480 | } | |
1481 | ||
1482 | static void abort_commit(BlkTransactionState *common) | |
1483 | { | |
dfc6f865 | 1484 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1485 | } |
1486 | ||
ba0c86a3 | 1487 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1488 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1489 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1490 | .prepare = external_snapshot_prepare, |
1491 | .commit = external_snapshot_commit, | |
1492 | .abort = external_snapshot_abort, | |
1493 | }, | |
3037f364 SH |
1494 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1495 | .instance_size = sizeof(DriveBackupState), | |
1496 | .prepare = drive_backup_prepare, | |
1497 | .abort = drive_backup_abort, | |
1498 | }, | |
78b18b78 SH |
1499 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1500 | .instance_size = sizeof(BlkTransactionState), | |
1501 | .prepare = abort_prepare, | |
1502 | .commit = abort_commit, | |
1503 | }, | |
bbe86010 WX |
1504 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
1505 | .instance_size = sizeof(InternalSnapshotState), | |
1506 | .prepare = internal_snapshot_prepare, | |
1507 | .abort = internal_snapshot_abort, | |
1508 | }, | |
ba0c86a3 WX |
1509 | }; |
1510 | ||
8802d1fd JC |
1511 | /* |
1512 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1513 | * then we do not pivot any of the devices in the group, and abandon the | |
1514 | * snapshots | |
1515 | */ | |
c8a83e85 | 1516 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1517 | { |
c8a83e85 | 1518 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1519 | BlkTransactionState *state, *next; |
43e17041 | 1520 | Error *local_err = NULL; |
8802d1fd | 1521 | |
ba5d6ab6 | 1522 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1523 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1524 | ||
1525 | /* drain all i/o before any snapshots */ | |
1526 | bdrv_drain_all(); | |
1527 | ||
1528 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1529 | while (NULL != dev_entry) { | |
c8a83e85 | 1530 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1531 | const BdrvActionOps *ops; |
52e7c241 | 1532 | |
8802d1fd JC |
1533 | dev_info = dev_entry->value; |
1534 | dev_entry = dev_entry->next; | |
1535 | ||
ba0c86a3 WX |
1536 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1537 | ||
1538 | ops = &actions[dev_info->kind]; | |
aa3fe714 HR |
1539 | assert(ops->instance_size > 0); |
1540 | ||
ba5d6ab6 SH |
1541 | state = g_malloc0(ops->instance_size); |
1542 | state->ops = ops; | |
1543 | state->action = dev_info; | |
1544 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1545 | |
ba5d6ab6 | 1546 | state->ops->prepare(state, &local_err); |
84d18f06 | 1547 | if (local_err) { |
ba0c86a3 WX |
1548 | error_propagate(errp, local_err); |
1549 | goto delete_and_fail; | |
8802d1fd | 1550 | } |
8802d1fd JC |
1551 | } |
1552 | ||
ba5d6ab6 | 1553 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1554 | if (state->ops->commit) { |
1555 | state->ops->commit(state); | |
1556 | } | |
8802d1fd JC |
1557 | } |
1558 | ||
1559 | /* success */ | |
1560 | goto exit; | |
1561 | ||
1562 | delete_and_fail: | |
1563 | /* | |
1564 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1565 | * the original bs for all images | |
1566 | */ | |
ba5d6ab6 SH |
1567 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1568 | if (state->ops->abort) { | |
1569 | state->ops->abort(state); | |
ba0c86a3 | 1570 | } |
8802d1fd JC |
1571 | } |
1572 | exit: | |
ba5d6ab6 SH |
1573 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1574 | if (state->ops->clean) { | |
1575 | state->ops->clean(state); | |
ba0c86a3 | 1576 | } |
ba5d6ab6 | 1577 | g_free(state); |
8802d1fd | 1578 | } |
8802d1fd JC |
1579 | } |
1580 | ||
1581 | ||
92d48558 | 1582 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1583 | { |
3718d8ab | 1584 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
2d3735d3 SH |
1585 | return; |
1586 | } | |
2c6942fa | 1587 | if (!bdrv_dev_has_removable_media(bs)) { |
f231b88d CR |
1588 | error_setg(errp, "Device '%s' is not removable", |
1589 | bdrv_get_device_name(bs)); | |
92d48558 | 1590 | return; |
ea8f942f | 1591 | } |
92d48558 | 1592 | |
025ccaa7 PB |
1593 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1594 | bdrv_dev_eject_request(bs, force); | |
1595 | if (!force) { | |
f231b88d CR |
1596 | error_setg(errp, "Device '%s' is locked", |
1597 | bdrv_get_device_name(bs)); | |
92d48558 | 1598 | return; |
025ccaa7 | 1599 | } |
666daa68 | 1600 | } |
92d48558 | 1601 | |
3b5276b5 | 1602 | bdrv_close(bs); |
666daa68 MA |
1603 | } |
1604 | ||
c245b6a3 | 1605 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1606 | { |
1607 | BlockDriverState *bs; | |
666daa68 | 1608 | |
c245b6a3 | 1609 | bs = bdrv_find(device); |
666daa68 | 1610 | if (!bs) { |
c245b6a3 LC |
1611 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1612 | return; | |
92d48558 LC |
1613 | } |
1614 | ||
c245b6a3 | 1615 | eject_device(bs, force, errp); |
666daa68 MA |
1616 | } |
1617 | ||
12d3ba82 BC |
1618 | void qmp_block_passwd(bool has_device, const char *device, |
1619 | bool has_node_name, const char *node_name, | |
1620 | const char *password, Error **errp) | |
666daa68 | 1621 | { |
12d3ba82 | 1622 | Error *local_err = NULL; |
666daa68 MA |
1623 | BlockDriverState *bs; |
1624 | int err; | |
1625 | ||
12d3ba82 BC |
1626 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1627 | has_node_name ? node_name : NULL, | |
1628 | &local_err); | |
84d18f06 | 1629 | if (local_err) { |
12d3ba82 | 1630 | error_propagate(errp, local_err); |
a4dea8a9 | 1631 | return; |
666daa68 MA |
1632 | } |
1633 | ||
a4dea8a9 | 1634 | err = bdrv_set_key(bs, password); |
666daa68 | 1635 | if (err == -EINVAL) { |
a4dea8a9 LC |
1636 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1637 | return; | |
666daa68 | 1638 | } else if (err < 0) { |
a4dea8a9 LC |
1639 | error_set(errp, QERR_INVALID_PASSWORD); |
1640 | return; | |
666daa68 | 1641 | } |
666daa68 MA |
1642 | } |
1643 | ||
333a96ec LC |
1644 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1645 | int bdrv_flags, BlockDriver *drv, | |
1646 | const char *password, Error **errp) | |
1647 | { | |
34b5d2c6 | 1648 | Error *local_err = NULL; |
0eef407c LC |
1649 | int ret; |
1650 | ||
ddf5636d | 1651 | ret = bdrv_open(&bs, filename, NULL, NULL, bdrv_flags, drv, &local_err); |
0eef407c | 1652 | if (ret < 0) { |
34b5d2c6 | 1653 | error_propagate(errp, local_err); |
333a96ec LC |
1654 | return; |
1655 | } | |
1656 | ||
1657 | if (bdrv_key_required(bs)) { | |
1658 | if (password) { | |
1659 | if (bdrv_set_key(bs, password) < 0) { | |
1660 | error_set(errp, QERR_INVALID_PASSWORD); | |
1661 | } | |
1662 | } else { | |
1663 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1664 | bdrv_get_encrypted_filename(bs)); | |
1665 | } | |
1666 | } else if (password) { | |
1667 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1668 | } | |
1669 | } | |
1670 | ||
1671 | void qmp_change_blockdev(const char *device, const char *filename, | |
314f7ea7 | 1672 | const char *format, Error **errp) |
666daa68 MA |
1673 | { |
1674 | BlockDriverState *bs; | |
1675 | BlockDriver *drv = NULL; | |
1676 | int bdrv_flags; | |
92d48558 | 1677 | Error *err = NULL; |
666daa68 MA |
1678 | |
1679 | bs = bdrv_find(device); | |
1680 | if (!bs) { | |
333a96ec LC |
1681 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1682 | return; | |
666daa68 | 1683 | } |
333a96ec LC |
1684 | |
1685 | if (format) { | |
b64ec4e4 | 1686 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1687 | if (!drv) { |
333a96ec LC |
1688 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1689 | return; | |
666daa68 MA |
1690 | } |
1691 | } | |
333a96ec | 1692 | |
92d48558 | 1693 | eject_device(bs, 0, &err); |
84d18f06 | 1694 | if (err) { |
333a96ec LC |
1695 | error_propagate(errp, err); |
1696 | return; | |
666daa68 | 1697 | } |
333a96ec | 1698 | |
528f7663 | 1699 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1700 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1701 | |
1702 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1703 | } |
9063f814 | 1704 | |
727f005e | 1705 | /* throttling disk I/O limits */ |
80047da5 | 1706 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1707 | int64_t bps_wr, |
1708 | int64_t iops, | |
1709 | int64_t iops_rd, | |
1710 | int64_t iops_wr, | |
1711 | bool has_bps_max, | |
1712 | int64_t bps_max, | |
1713 | bool has_bps_rd_max, | |
1714 | int64_t bps_rd_max, | |
1715 | bool has_bps_wr_max, | |
1716 | int64_t bps_wr_max, | |
1717 | bool has_iops_max, | |
1718 | int64_t iops_max, | |
1719 | bool has_iops_rd_max, | |
1720 | int64_t iops_rd_max, | |
1721 | bool has_iops_wr_max, | |
2024c1df BC |
1722 | int64_t iops_wr_max, |
1723 | bool has_iops_size, | |
1724 | int64_t iops_size, Error **errp) | |
727f005e | 1725 | { |
cc0681c4 | 1726 | ThrottleConfig cfg; |
727f005e | 1727 | BlockDriverState *bs; |
b15446fd | 1728 | AioContext *aio_context; |
727f005e | 1729 | |
80047da5 | 1730 | bs = bdrv_find(device); |
727f005e | 1731 | if (!bs) { |
80047da5 LC |
1732 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1733 | return; | |
727f005e ZYW |
1734 | } |
1735 | ||
cc0681c4 BC |
1736 | memset(&cfg, 0, sizeof(cfg)); |
1737 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1738 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1739 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1740 | ||
1741 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1742 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1743 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1744 | ||
3e9fab69 BC |
1745 | if (has_bps_max) { |
1746 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1747 | } | |
1748 | if (has_bps_rd_max) { | |
1749 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1750 | } | |
1751 | if (has_bps_wr_max) { | |
1752 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1753 | } | |
1754 | if (has_iops_max) { | |
1755 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1756 | } | |
1757 | if (has_iops_rd_max) { | |
1758 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1759 | } | |
1760 | if (has_iops_wr_max) { | |
1761 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1762 | } | |
727f005e | 1763 | |
2024c1df BC |
1764 | if (has_iops_size) { |
1765 | cfg.op_size = iops_size; | |
1766 | } | |
cc0681c4 BC |
1767 | |
1768 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1769 | return; |
727f005e ZYW |
1770 | } |
1771 | ||
b15446fd SH |
1772 | aio_context = bdrv_get_aio_context(bs); |
1773 | aio_context_acquire(aio_context); | |
1774 | ||
cc0681c4 | 1775 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1776 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1777 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1778 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1779 | } |
1780 | ||
1781 | if (bs->io_limits_enabled) { | |
1782 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1783 | } |
b15446fd SH |
1784 | |
1785 | aio_context_release(aio_context); | |
727f005e ZYW |
1786 | } |
1787 | ||
9063f814 RH |
1788 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1789 | { | |
1790 | const char *id = qdict_get_str(qdict, "id"); | |
1791 | BlockDriverState *bs; | |
48f364dd | 1792 | DriveInfo *dinfo; |
8ad4202b | 1793 | AioContext *aio_context; |
3718d8ab | 1794 | Error *local_err = NULL; |
9063f814 RH |
1795 | |
1796 | bs = bdrv_find(id); | |
1797 | if (!bs) { | |
b1422f20 | 1798 | error_report("Device '%s' not found", id); |
9063f814 RH |
1799 | return -1; |
1800 | } | |
8ad4202b | 1801 | |
48f364dd MA |
1802 | dinfo = drive_get_by_blockdev(bs); |
1803 | if (dinfo && !dinfo->enable_auto_del) { | |
1804 | error_report("Deleting device added with blockdev-add" | |
1805 | " is not supported"); | |
1806 | return -1; | |
1807 | } | |
1808 | ||
8ad4202b SH |
1809 | aio_context = bdrv_get_aio_context(bs); |
1810 | aio_context_acquire(aio_context); | |
1811 | ||
3718d8ab FZ |
1812 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
1813 | error_report("%s", error_get_pretty(local_err)); | |
1814 | error_free(local_err); | |
8ad4202b | 1815 | aio_context_release(aio_context); |
8591675f MT |
1816 | return -1; |
1817 | } | |
9063f814 RH |
1818 | |
1819 | /* quiesce block driver; prevent further io */ | |
922453bc | 1820 | bdrv_drain_all(); |
9063f814 RH |
1821 | bdrv_flush(bs); |
1822 | bdrv_close(bs); | |
1823 | ||
fa879d62 | 1824 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1825 | * then we need to make the drive anonymous until the device |
1826 | * can be removed. If this is a drive with no device backing | |
1827 | * then we can just get rid of the block driver state right here. | |
1828 | */ | |
fa879d62 | 1829 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1830 | bdrv_make_anon(bs); |
293c51a6 SH |
1831 | |
1832 | /* Further I/O must not pause the guest */ | |
1833 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1834 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 1835 | } else { |
48f364dd | 1836 | drive_del(dinfo); |
9063f814 RH |
1837 | } |
1838 | ||
8ad4202b | 1839 | aio_context_release(aio_context); |
9063f814 RH |
1840 | return 0; |
1841 | } | |
6d4a2b3a | 1842 | |
3b1dbd11 BC |
1843 | void qmp_block_resize(bool has_device, const char *device, |
1844 | bool has_node_name, const char *node_name, | |
1845 | int64_t size, Error **errp) | |
6d4a2b3a | 1846 | { |
3b1dbd11 | 1847 | Error *local_err = NULL; |
6d4a2b3a | 1848 | BlockDriverState *bs; |
927e0e76 | 1849 | AioContext *aio_context; |
8732901e | 1850 | int ret; |
6d4a2b3a | 1851 | |
3b1dbd11 BC |
1852 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1853 | has_node_name ? node_name : NULL, | |
1854 | &local_err); | |
84d18f06 | 1855 | if (local_err) { |
3b1dbd11 BC |
1856 | error_propagate(errp, local_err); |
1857 | return; | |
1858 | } | |
1859 | ||
927e0e76 SH |
1860 | aio_context = bdrv_get_aio_context(bs); |
1861 | aio_context_acquire(aio_context); | |
1862 | ||
3b1dbd11 BC |
1863 | if (!bdrv_is_first_non_filter(bs)) { |
1864 | error_set(errp, QERR_FEATURE_DISABLED, "resize"); | |
927e0e76 | 1865 | goto out; |
6d4a2b3a CH |
1866 | } |
1867 | ||
1868 | if (size < 0) { | |
939a1cc3 | 1869 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 1870 | goto out; |
6d4a2b3a CH |
1871 | } |
1872 | ||
9c75e168 JC |
1873 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
1874 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
927e0e76 | 1875 | goto out; |
9c75e168 JC |
1876 | } |
1877 | ||
92b7a08d PL |
1878 | /* complete all in-flight operations before resizing the device */ |
1879 | bdrv_drain_all(); | |
1880 | ||
8732901e KW |
1881 | ret = bdrv_truncate(bs, size); |
1882 | switch (ret) { | |
939a1cc3 SH |
1883 | case 0: |
1884 | break; | |
1885 | case -ENOMEDIUM: | |
1886 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1887 | break; | |
1888 | case -ENOTSUP: | |
1889 | error_set(errp, QERR_UNSUPPORTED); | |
1890 | break; | |
1891 | case -EACCES: | |
1892 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1893 | break; | |
1894 | case -EBUSY: | |
1895 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1896 | break; | |
1897 | default: | |
8732901e | 1898 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1899 | break; |
6d4a2b3a | 1900 | } |
927e0e76 SH |
1901 | |
1902 | out: | |
1903 | aio_context_release(aio_context); | |
6d4a2b3a | 1904 | } |
12bd451f | 1905 | |
9abf2dba | 1906 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1907 | { |
1908 | BlockDriverState *bs = opaque; | |
bcada37b | 1909 | const char *msg = NULL; |
12bd451f | 1910 | |
9abf2dba | 1911 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1912 | |
1913 | assert(bs->job); | |
bcada37b | 1914 | |
12bd451f | 1915 | if (ret < 0) { |
bcada37b | 1916 | msg = strerror(-ret); |
12bd451f SH |
1917 | } |
1918 | ||
370521a1 | 1919 | if (block_job_is_cancelled(bs->job)) { |
bcada37b | 1920 | block_job_event_cancelled(bs->job); |
370521a1 | 1921 | } else { |
bcada37b | 1922 | block_job_event_completed(bs->job, msg); |
370521a1 | 1923 | } |
aa398a5c | 1924 | |
fa510ebf | 1925 | bdrv_put_ref_bh_schedule(bs); |
12bd451f SH |
1926 | } |
1927 | ||
13d8cc51 JC |
1928 | void qmp_block_stream(const char *device, |
1929 | bool has_base, const char *base, | |
1930 | bool has_backing_file, const char *backing_file, | |
1931 | bool has_speed, int64_t speed, | |
1d809098 PB |
1932 | bool has_on_error, BlockdevOnError on_error, |
1933 | Error **errp) | |
12bd451f SH |
1934 | { |
1935 | BlockDriverState *bs; | |
c8c3080f | 1936 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1937 | Error *local_err = NULL; |
13d8cc51 | 1938 | const char *base_name = NULL; |
12bd451f | 1939 | |
1d809098 PB |
1940 | if (!has_on_error) { |
1941 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1942 | } | |
1943 | ||
12bd451f SH |
1944 | bs = bdrv_find(device); |
1945 | if (!bs) { | |
1946 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1947 | return; | |
1948 | } | |
1949 | ||
628ff683 FZ |
1950 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
1951 | return; | |
1952 | } | |
1953 | ||
13d8cc51 | 1954 | if (has_base) { |
c8c3080f MT |
1955 | base_bs = bdrv_find_backing_image(bs, base); |
1956 | if (base_bs == NULL) { | |
1957 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1958 | return; | |
1959 | } | |
13d8cc51 | 1960 | base_name = base; |
12bd451f SH |
1961 | } |
1962 | ||
13d8cc51 JC |
1963 | /* if we are streaming the entire chain, the result will have no backing |
1964 | * file, and specifying one is therefore an error */ | |
1965 | if (base_bs == NULL && has_backing_file) { | |
1966 | error_setg(errp, "backing file specified, but streaming the " | |
1967 | "entire chain"); | |
1968 | return; | |
1969 | } | |
1970 | ||
1971 | /* backing_file string overrides base bs filename */ | |
1972 | base_name = has_backing_file ? backing_file : base_name; | |
1973 | ||
1974 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, | |
1d809098 | 1975 | on_error, block_job_cb, bs, &local_err); |
84d18f06 | 1976 | if (local_err) { |
fd7f8c65 SH |
1977 | error_propagate(errp, local_err); |
1978 | return; | |
12bd451f SH |
1979 | } |
1980 | ||
1981 | trace_qmp_block_stream(bs, bs->job); | |
1982 | } | |
2d47c6e9 | 1983 | |
ed61fc10 | 1984 | void qmp_block_commit(const char *device, |
7676e2c5 JC |
1985 | bool has_base, const char *base, |
1986 | bool has_top, const char *top, | |
54e26900 | 1987 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
1988 | bool has_speed, int64_t speed, |
1989 | Error **errp) | |
1990 | { | |
1991 | BlockDriverState *bs; | |
1992 | BlockDriverState *base_bs, *top_bs; | |
1993 | Error *local_err = NULL; | |
1994 | /* This will be part of the QMP command, if/when the | |
1995 | * BlockdevOnError change for blkmirror makes it in | |
1996 | */ | |
92aa5c6d | 1997 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 1998 | |
54504663 HR |
1999 | if (!has_speed) { |
2000 | speed = 0; | |
2001 | } | |
2002 | ||
ed61fc10 JC |
2003 | /* drain all i/o before commits */ |
2004 | bdrv_drain_all(); | |
2005 | ||
7676e2c5 JC |
2006 | /* Important Note: |
2007 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
2008 | * live commit feature versions; for this to work, we must make sure to | |
2009 | * perform the device lookup before any generic errors that may occur in a | |
2010 | * scenario in which all optional arguments are omitted. */ | |
ed61fc10 JC |
2011 | bs = bdrv_find(device); |
2012 | if (!bs) { | |
2013 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2014 | return; | |
628ff683 FZ |
2015 | } |
2016 | ||
2017 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT, errp)) { | |
2018 | return; | |
ed61fc10 | 2019 | } |
ed61fc10 JC |
2020 | |
2021 | /* default top_bs is the active layer */ | |
2022 | top_bs = bs; | |
2023 | ||
7676e2c5 | 2024 | if (has_top && top) { |
ed61fc10 JC |
2025 | if (strcmp(bs->filename, top) != 0) { |
2026 | top_bs = bdrv_find_backing_image(bs, top); | |
2027 | } | |
2028 | } | |
2029 | ||
2030 | if (top_bs == NULL) { | |
2031 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
2032 | return; | |
2033 | } | |
2034 | ||
d5208c45 JC |
2035 | if (has_base && base) { |
2036 | base_bs = bdrv_find_backing_image(top_bs, base); | |
2037 | } else { | |
2038 | base_bs = bdrv_find_base(top_bs); | |
2039 | } | |
2040 | ||
2041 | if (base_bs == NULL) { | |
2042 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
2043 | return; | |
2044 | } | |
2045 | ||
7676e2c5 JC |
2046 | /* Do not allow attempts to commit an image into itself */ |
2047 | if (top_bs == base_bs) { | |
2048 | error_setg(errp, "cannot commit an image into itself"); | |
2049 | return; | |
2050 | } | |
2051 | ||
20a63d2c | 2052 | if (top_bs == bs) { |
54e26900 JC |
2053 | if (has_backing_file) { |
2054 | error_setg(errp, "'backing-file' specified," | |
2055 | " but 'top' is the active layer"); | |
2056 | return; | |
2057 | } | |
20a63d2c FZ |
2058 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
2059 | bs, &local_err); | |
2060 | } else { | |
2061 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, | |
54e26900 | 2062 | has_backing_file ? backing_file : NULL, &local_err); |
20a63d2c | 2063 | } |
ed61fc10 JC |
2064 | if (local_err != NULL) { |
2065 | error_propagate(errp, local_err); | |
2066 | return; | |
2067 | } | |
ed61fc10 JC |
2068 | } |
2069 | ||
99a9addf SH |
2070 | void qmp_drive_backup(const char *device, const char *target, |
2071 | bool has_format, const char *format, | |
b53169ea | 2072 | enum MirrorSyncMode sync, |
99a9addf SH |
2073 | bool has_mode, enum NewImageMode mode, |
2074 | bool has_speed, int64_t speed, | |
2075 | bool has_on_source_error, BlockdevOnError on_source_error, | |
2076 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2077 | Error **errp) | |
2078 | { | |
2079 | BlockDriverState *bs; | |
2080 | BlockDriverState *target_bs; | |
fc5d3f84 | 2081 | BlockDriverState *source = NULL; |
99a9addf SH |
2082 | BlockDriver *drv = NULL; |
2083 | Error *local_err = NULL; | |
2084 | int flags; | |
2085 | int64_t size; | |
2086 | int ret; | |
2087 | ||
2088 | if (!has_speed) { | |
2089 | speed = 0; | |
2090 | } | |
2091 | if (!has_on_source_error) { | |
2092 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2093 | } | |
2094 | if (!has_on_target_error) { | |
2095 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2096 | } | |
2097 | if (!has_mode) { | |
2098 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2099 | } | |
2100 | ||
2101 | bs = bdrv_find(device); | |
2102 | if (!bs) { | |
2103 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2104 | return; | |
2105 | } | |
2106 | ||
2107 | if (!bdrv_is_inserted(bs)) { | |
2108 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2109 | return; | |
2110 | } | |
2111 | ||
2112 | if (!has_format) { | |
2113 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2114 | } | |
2115 | if (format) { | |
2116 | drv = bdrv_find_format(format); | |
2117 | if (!drv) { | |
2118 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
2119 | return; | |
2120 | } | |
2121 | } | |
2122 | ||
3718d8ab | 2123 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
99a9addf SH |
2124 | return; |
2125 | } | |
2126 | ||
2127 | flags = bs->open_flags | BDRV_O_RDWR; | |
2128 | ||
fc5d3f84 IM |
2129 | /* See if we have a backing HD we can use to create our new image |
2130 | * on top of. */ | |
2131 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
2132 | source = bs->backing_hd; | |
2133 | if (!source) { | |
2134 | sync = MIRROR_SYNC_MODE_FULL; | |
2135 | } | |
2136 | } | |
2137 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
2138 | source = bs; | |
2139 | } | |
2140 | ||
99a9addf SH |
2141 | size = bdrv_getlength(bs); |
2142 | if (size < 0) { | |
2143 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2144 | return; | |
2145 | } | |
2146 | ||
2147 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
2148 | assert(format && drv); | |
fc5d3f84 IM |
2149 | if (source) { |
2150 | bdrv_img_create(target, format, source->filename, | |
2151 | source->drv->format_name, NULL, | |
2152 | size, flags, &local_err, false); | |
2153 | } else { | |
2154 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
2155 | size, flags, &local_err, false); | |
2156 | } | |
99a9addf SH |
2157 | } |
2158 | ||
84d18f06 | 2159 | if (local_err) { |
99a9addf SH |
2160 | error_propagate(errp, local_err); |
2161 | return; | |
2162 | } | |
2163 | ||
f67503e5 | 2164 | target_bs = NULL; |
ddf5636d | 2165 | ret = bdrv_open(&target_bs, target, NULL, NULL, flags, drv, &local_err); |
99a9addf | 2166 | if (ret < 0) { |
34b5d2c6 | 2167 | error_propagate(errp, local_err); |
99a9addf SH |
2168 | return; |
2169 | } | |
2170 | ||
fc5d3f84 | 2171 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
2172 | block_job_cb, bs, &local_err); |
2173 | if (local_err != NULL) { | |
4f6fd349 | 2174 | bdrv_unref(target_bs); |
99a9addf SH |
2175 | error_propagate(errp, local_err); |
2176 | return; | |
2177 | } | |
99a9addf SH |
2178 | } |
2179 | ||
c13163fb BC |
2180 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
2181 | { | |
2182 | return bdrv_named_nodes_list(); | |
2183 | } | |
2184 | ||
08e4ed6c PB |
2185 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
2186 | ||
d9b902db PB |
2187 | void qmp_drive_mirror(const char *device, const char *target, |
2188 | bool has_format, const char *format, | |
4c828dc6 | 2189 | bool has_node_name, const char *node_name, |
09158f00 | 2190 | bool has_replaces, const char *replaces, |
d9b902db PB |
2191 | enum MirrorSyncMode sync, |
2192 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 2193 | bool has_speed, int64_t speed, |
eee13dfe | 2194 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 2195 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
2196 | bool has_on_source_error, BlockdevOnError on_source_error, |
2197 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2198 | Error **errp) | |
d9b902db | 2199 | { |
d9b902db PB |
2200 | BlockDriverState *bs; |
2201 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
2202 | BlockDriver *drv = NULL; |
2203 | Error *local_err = NULL; | |
4c828dc6 | 2204 | QDict *options = NULL; |
d9b902db | 2205 | int flags; |
ac3c5d83 | 2206 | int64_t size; |
d9b902db PB |
2207 | int ret; |
2208 | ||
2209 | if (!has_speed) { | |
2210 | speed = 0; | |
2211 | } | |
b952b558 PB |
2212 | if (!has_on_source_error) { |
2213 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2214 | } | |
2215 | if (!has_on_target_error) { | |
2216 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2217 | } | |
d9b902db PB |
2218 | if (!has_mode) { |
2219 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2220 | } | |
eee13dfe PB |
2221 | if (!has_granularity) { |
2222 | granularity = 0; | |
2223 | } | |
08e4ed6c PB |
2224 | if (!has_buf_size) { |
2225 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
2226 | } | |
2227 | ||
eee13dfe | 2228 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
3cbbe9fd SH |
2229 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
2230 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
2231 | return; |
2232 | } | |
2233 | if (granularity & (granularity - 1)) { | |
3cbbe9fd | 2234 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", "power of 2"); |
eee13dfe PB |
2235 | return; |
2236 | } | |
d9b902db PB |
2237 | |
2238 | bs = bdrv_find(device); | |
2239 | if (!bs) { | |
2240 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2241 | return; | |
2242 | } | |
2243 | ||
2244 | if (!bdrv_is_inserted(bs)) { | |
2245 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2246 | return; | |
2247 | } | |
2248 | ||
2249 | if (!has_format) { | |
2250 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2251 | } | |
2252 | if (format) { | |
2253 | drv = bdrv_find_format(format); | |
2254 | if (!drv) { | |
2255 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
2256 | return; | |
2257 | } | |
2258 | } | |
2259 | ||
3718d8ab | 2260 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) { |
d9b902db PB |
2261 | return; |
2262 | } | |
2263 | ||
2264 | flags = bs->open_flags | BDRV_O_RDWR; | |
2265 | source = bs->backing_hd; | |
2266 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
2267 | sync = MIRROR_SYNC_MODE_FULL; | |
2268 | } | |
117e0c82 HR |
2269 | if (sync == MIRROR_SYNC_MODE_NONE) { |
2270 | source = bs; | |
2271 | } | |
d9b902db | 2272 | |
ac3c5d83 SH |
2273 | size = bdrv_getlength(bs); |
2274 | if (size < 0) { | |
2275 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2276 | return; | |
2277 | } | |
2278 | ||
09158f00 BC |
2279 | if (has_replaces) { |
2280 | BlockDriverState *to_replace_bs; | |
2281 | ||
2282 | if (!has_node_name) { | |
2283 | error_setg(errp, "a node-name must be provided when replacing a" | |
2284 | " named node of the graph"); | |
2285 | return; | |
2286 | } | |
2287 | ||
2288 | to_replace_bs = check_to_replace_node(replaces, &local_err); | |
2289 | ||
2290 | if (!to_replace_bs) { | |
2291 | error_propagate(errp, local_err); | |
2292 | return; | |
2293 | } | |
2294 | ||
2295 | if (size != bdrv_getlength(to_replace_bs)) { | |
2296 | error_setg(errp, "cannot replace image with a mirror image of " | |
2297 | "different size"); | |
2298 | return; | |
2299 | } | |
2300 | } | |
2301 | ||
14526864 HR |
2302 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
2303 | && mode != NEW_IMAGE_MODE_EXISTING) | |
2304 | { | |
d9b902db PB |
2305 | /* create new image w/o backing file */ |
2306 | assert(format && drv); | |
cf8f2426 | 2307 | bdrv_img_create(target, format, |
f382d43a | 2308 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
2309 | } else { |
2310 | switch (mode) { | |
2311 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
2312 | break; |
2313 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
2314 | /* create new image with backing file */ | |
cf8f2426 LC |
2315 | bdrv_img_create(target, format, |
2316 | source->filename, | |
2317 | source->drv->format_name, | |
f382d43a | 2318 | NULL, size, flags, &local_err, false); |
d9b902db PB |
2319 | break; |
2320 | default: | |
2321 | abort(); | |
2322 | } | |
2323 | } | |
2324 | ||
84d18f06 | 2325 | if (local_err) { |
cf8f2426 | 2326 | error_propagate(errp, local_err); |
d9b902db PB |
2327 | return; |
2328 | } | |
2329 | ||
4c828dc6 BC |
2330 | if (has_node_name) { |
2331 | options = qdict_new(); | |
2332 | qdict_put(options, "node-name", qstring_from_str(node_name)); | |
2333 | } | |
2334 | ||
b812f671 PB |
2335 | /* Mirroring takes care of copy-on-write using the source's backing |
2336 | * file. | |
2337 | */ | |
f67503e5 | 2338 | target_bs = NULL; |
4c828dc6 BC |
2339 | ret = bdrv_open(&target_bs, target, NULL, options, |
2340 | flags | BDRV_O_NO_BACKING, drv, &local_err); | |
d9b902db | 2341 | if (ret < 0) { |
34b5d2c6 | 2342 | error_propagate(errp, local_err); |
d9b902db PB |
2343 | return; |
2344 | } | |
2345 | ||
09158f00 BC |
2346 | /* pass the node name to replace to mirror start since it's loose coupling |
2347 | * and will allow to check whether the node still exist at mirror completion | |
2348 | */ | |
2349 | mirror_start(bs, target_bs, | |
2350 | has_replaces ? replaces : NULL, | |
2351 | speed, granularity, buf_size, sync, | |
eee13dfe | 2352 | on_source_error, on_target_error, |
b952b558 | 2353 | block_job_cb, bs, &local_err); |
d9b902db | 2354 | if (local_err != NULL) { |
4f6fd349 | 2355 | bdrv_unref(target_bs); |
d9b902db PB |
2356 | error_propagate(errp, local_err); |
2357 | return; | |
2358 | } | |
d9b902db PB |
2359 | } |
2360 | ||
2d47c6e9 SH |
2361 | static BlockJob *find_block_job(const char *device) |
2362 | { | |
2363 | BlockDriverState *bs; | |
2364 | ||
2365 | bs = bdrv_find(device); | |
2366 | if (!bs || !bs->job) { | |
2367 | return NULL; | |
2368 | } | |
2369 | return bs->job; | |
2370 | } | |
2371 | ||
882ec7ce | 2372 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
2373 | { |
2374 | BlockJob *job = find_block_job(device); | |
2375 | ||
2376 | if (!job) { | |
7ef15070 | 2377 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
2378 | return; |
2379 | } | |
2380 | ||
882ec7ce | 2381 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 2382 | } |
370521a1 | 2383 | |
6e37fb81 PB |
2384 | void qmp_block_job_cancel(const char *device, |
2385 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
2386 | { |
2387 | BlockJob *job = find_block_job(device); | |
2388 | ||
6e37fb81 PB |
2389 | if (!has_force) { |
2390 | force = false; | |
2391 | } | |
2392 | ||
370521a1 | 2393 | if (!job) { |
7ef15070 | 2394 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
2395 | return; |
2396 | } | |
6e37fb81 | 2397 | if (job->paused && !force) { |
f231b88d CR |
2398 | error_setg(errp, "The block job for device '%s' is currently paused", |
2399 | device); | |
8acc72a4 PB |
2400 | return; |
2401 | } | |
370521a1 SH |
2402 | |
2403 | trace_qmp_block_job_cancel(job); | |
2404 | block_job_cancel(job); | |
2405 | } | |
fb5458cd | 2406 | |
6e37fb81 PB |
2407 | void qmp_block_job_pause(const char *device, Error **errp) |
2408 | { | |
2409 | BlockJob *job = find_block_job(device); | |
2410 | ||
2411 | if (!job) { | |
2412 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2413 | return; | |
2414 | } | |
2415 | ||
2416 | trace_qmp_block_job_pause(job); | |
2417 | block_job_pause(job); | |
2418 | } | |
2419 | ||
2420 | void qmp_block_job_resume(const char *device, Error **errp) | |
2421 | { | |
2422 | BlockJob *job = find_block_job(device); | |
2423 | ||
2424 | if (!job) { | |
2425 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2426 | return; | |
2427 | } | |
2428 | ||
2429 | trace_qmp_block_job_resume(job); | |
2430 | block_job_resume(job); | |
2431 | } | |
2432 | ||
aeae883b PB |
2433 | void qmp_block_job_complete(const char *device, Error **errp) |
2434 | { | |
2435 | BlockJob *job = find_block_job(device); | |
2436 | ||
2437 | if (!job) { | |
2438 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2439 | return; | |
2440 | } | |
2441 | ||
2442 | trace_qmp_block_job_complete(job); | |
2443 | block_job_complete(job, errp); | |
2444 | } | |
2445 | ||
fa40e656 JC |
2446 | void qmp_change_backing_file(const char *device, |
2447 | const char *image_node_name, | |
2448 | const char *backing_file, | |
2449 | Error **errp) | |
2450 | { | |
2451 | BlockDriverState *bs = NULL; | |
2452 | BlockDriverState *image_bs = NULL; | |
2453 | Error *local_err = NULL; | |
2454 | bool ro; | |
2455 | int open_flags; | |
2456 | int ret; | |
2457 | ||
2458 | /* find the top layer BDS of the chain */ | |
2459 | bs = bdrv_find(device); | |
2460 | if (!bs) { | |
2461 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2462 | return; | |
2463 | } | |
2464 | ||
2465 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); | |
2466 | if (local_err) { | |
2467 | error_propagate(errp, local_err); | |
2468 | return; | |
2469 | } | |
2470 | ||
2471 | if (!image_bs) { | |
2472 | error_setg(errp, "image file not found"); | |
2473 | return; | |
2474 | } | |
2475 | ||
2476 | if (bdrv_find_base(image_bs) == image_bs) { | |
2477 | error_setg(errp, "not allowing backing file change on an image " | |
2478 | "without a backing file"); | |
2479 | return; | |
2480 | } | |
2481 | ||
2482 | /* even though we are not necessarily operating on bs, we need it to | |
2483 | * determine if block ops are currently prohibited on the chain */ | |
2484 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
2485 | return; | |
2486 | } | |
2487 | ||
2488 | /* final sanity check */ | |
2489 | if (!bdrv_chain_contains(bs, image_bs)) { | |
2490 | error_setg(errp, "'%s' and image file are not in the same chain", | |
2491 | device); | |
2492 | return; | |
2493 | } | |
2494 | ||
2495 | /* if not r/w, reopen to make r/w */ | |
2496 | open_flags = image_bs->open_flags; | |
2497 | ro = bdrv_is_read_only(image_bs); | |
2498 | ||
2499 | if (ro) { | |
2500 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
2501 | if (local_err) { | |
2502 | error_propagate(errp, local_err); | |
2503 | return; | |
2504 | } | |
2505 | } | |
2506 | ||
2507 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
2508 | image_bs->drv ? image_bs->drv->format_name : ""); | |
2509 | ||
2510 | if (ret < 0) { | |
2511 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
2512 | backing_file); | |
2513 | /* don't exit here, so we can try to restore open flags if | |
2514 | * appropriate */ | |
2515 | } | |
2516 | ||
2517 | if (ro) { | |
2518 | bdrv_reopen(image_bs, open_flags, &local_err); | |
2519 | if (local_err) { | |
2520 | error_propagate(errp, local_err); /* will preserve prior errp */ | |
2521 | } | |
2522 | } | |
2523 | } | |
2524 | ||
d26c9a15 KW |
2525 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
2526 | { | |
2527 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
8ae8e904 | 2528 | DriveInfo *dinfo; |
d26c9a15 KW |
2529 | QObject *obj; |
2530 | QDict *qdict; | |
d26c9a15 KW |
2531 | Error *local_err = NULL; |
2532 | ||
2533 | /* Require an ID in the top level */ | |
2534 | if (!options->has_id) { | |
2535 | error_setg(errp, "Block device needs an ID"); | |
2536 | goto fail; | |
2537 | } | |
2538 | ||
60e19e06 | 2539 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
d26c9a15 | 2540 | * cache.direct=false instead of silently switching to aio=threads, except |
60e19e06 | 2541 | * when called from drive_new(). |
d26c9a15 KW |
2542 | * |
2543 | * For now, simply forbidding the combination for all drivers will do. */ | |
2544 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
c6e0bd9b KW |
2545 | bool direct = options->has_cache && |
2546 | options->cache->has_direct && | |
2547 | options->cache->direct; | |
2548 | if (!direct) { | |
d26c9a15 KW |
2549 | error_setg(errp, "aio=native requires cache.direct=true"); |
2550 | goto fail; | |
2551 | } | |
2552 | } | |
2553 | ||
2554 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), | |
2555 | &options, NULL, &local_err); | |
84d18f06 | 2556 | if (local_err) { |
d26c9a15 KW |
2557 | error_propagate(errp, local_err); |
2558 | goto fail; | |
2559 | } | |
2560 | ||
2561 | obj = qmp_output_get_qobject(ov); | |
2562 | qdict = qobject_to_qdict(obj); | |
2563 | ||
2564 | qdict_flatten(qdict); | |
2565 | ||
8ae8e904 | 2566 | dinfo = blockdev_init(NULL, qdict, &local_err); |
84d18f06 | 2567 | if (local_err) { |
b681072d | 2568 | error_propagate(errp, local_err); |
d26c9a15 KW |
2569 | goto fail; |
2570 | } | |
2571 | ||
8ae8e904 | 2572 | if (bdrv_key_required(dinfo->bdrv)) { |
60e19e06 | 2573 | drive_del(dinfo); |
8ae8e904 KW |
2574 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
2575 | goto fail; | |
2576 | } | |
2577 | ||
d26c9a15 KW |
2578 | fail: |
2579 | qmp_output_visitor_cleanup(ov); | |
2580 | } | |
2581 | ||
fb5458cd SH |
2582 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
2583 | { | |
2584 | BlockJobInfoList **prev = opaque; | |
2585 | BlockJob *job = bs->job; | |
2586 | ||
2587 | if (job) { | |
30e628b7 PB |
2588 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
2589 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
2590 | (*prev)->next = elem; |
2591 | *prev = elem; | |
2592 | } | |
2593 | } | |
2594 | ||
2595 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
2596 | { | |
2597 | /* Dummy is a fake list element for holding the head pointer */ | |
2598 | BlockJobInfoList dummy = {}; | |
2599 | BlockJobInfoList *prev = &dummy; | |
2600 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
2601 | return dummy.next; | |
2602 | } | |
4d454574 | 2603 | |
0006383e | 2604 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 2605 | .name = "drive", |
0006383e | 2606 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
2607 | .desc = { |
2608 | { | |
4d454574 PB |
2609 | .name = "snapshot", |
2610 | .type = QEMU_OPT_BOOL, | |
2611 | .help = "enable/disable snapshot mode", | |
a9384aff PB |
2612 | },{ |
2613 | .name = "discard", | |
2614 | .type = QEMU_OPT_STRING, | |
2615 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 2616 | },{ |
29c4e2b5 KW |
2617 | .name = "cache.writeback", |
2618 | .type = QEMU_OPT_BOOL, | |
2619 | .help = "enables writeback mode for any caches", | |
2620 | },{ | |
2621 | .name = "cache.direct", | |
2622 | .type = QEMU_OPT_BOOL, | |
2623 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
2624 | },{ | |
2625 | .name = "cache.no-flush", | |
2626 | .type = QEMU_OPT_BOOL, | |
2627 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
2628 | },{ |
2629 | .name = "aio", | |
2630 | .type = QEMU_OPT_STRING, | |
2631 | .help = "host AIO implementation (threads, native)", | |
2632 | },{ | |
2633 | .name = "format", | |
2634 | .type = QEMU_OPT_STRING, | |
2635 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
2636 | },{ |
2637 | .name = "rerror", | |
2638 | .type = QEMU_OPT_STRING, | |
2639 | .help = "read error action", | |
2640 | },{ | |
2641 | .name = "werror", | |
2642 | .type = QEMU_OPT_STRING, | |
2643 | .help = "write error action", | |
4d454574 | 2644 | },{ |
0f227a94 | 2645 | .name = "read-only", |
4d454574 PB |
2646 | .type = QEMU_OPT_BOOL, |
2647 | .help = "open drive file as read-only", | |
2648 | },{ | |
57975222 | 2649 | .name = "throttling.iops-total", |
4d454574 PB |
2650 | .type = QEMU_OPT_NUMBER, |
2651 | .help = "limit total I/O operations per second", | |
2652 | },{ | |
57975222 | 2653 | .name = "throttling.iops-read", |
4d454574 PB |
2654 | .type = QEMU_OPT_NUMBER, |
2655 | .help = "limit read operations per second", | |
2656 | },{ | |
57975222 | 2657 | .name = "throttling.iops-write", |
4d454574 PB |
2658 | .type = QEMU_OPT_NUMBER, |
2659 | .help = "limit write operations per second", | |
2660 | },{ | |
57975222 | 2661 | .name = "throttling.bps-total", |
4d454574 PB |
2662 | .type = QEMU_OPT_NUMBER, |
2663 | .help = "limit total bytes per second", | |
2664 | },{ | |
57975222 | 2665 | .name = "throttling.bps-read", |
4d454574 PB |
2666 | .type = QEMU_OPT_NUMBER, |
2667 | .help = "limit read bytes per second", | |
2668 | },{ | |
57975222 | 2669 | .name = "throttling.bps-write", |
4d454574 PB |
2670 | .type = QEMU_OPT_NUMBER, |
2671 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2672 | },{ |
2673 | .name = "throttling.iops-total-max", | |
2674 | .type = QEMU_OPT_NUMBER, | |
2675 | .help = "I/O operations burst", | |
2676 | },{ | |
2677 | .name = "throttling.iops-read-max", | |
2678 | .type = QEMU_OPT_NUMBER, | |
2679 | .help = "I/O operations read burst", | |
2680 | },{ | |
2681 | .name = "throttling.iops-write-max", | |
2682 | .type = QEMU_OPT_NUMBER, | |
2683 | .help = "I/O operations write burst", | |
2684 | },{ | |
2685 | .name = "throttling.bps-total-max", | |
2686 | .type = QEMU_OPT_NUMBER, | |
2687 | .help = "total bytes burst", | |
2688 | },{ | |
2689 | .name = "throttling.bps-read-max", | |
2690 | .type = QEMU_OPT_NUMBER, | |
2691 | .help = "total bytes read burst", | |
2692 | },{ | |
2693 | .name = "throttling.bps-write-max", | |
2694 | .type = QEMU_OPT_NUMBER, | |
2695 | .help = "total bytes write burst", | |
2024c1df BC |
2696 | },{ |
2697 | .name = "throttling.iops-size", | |
2698 | .type = QEMU_OPT_NUMBER, | |
2699 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2700 | },{ |
2701 | .name = "copy-on-read", | |
2702 | .type = QEMU_OPT_BOOL, | |
2703 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
2704 | },{ |
2705 | .name = "detect-zeroes", | |
2706 | .type = QEMU_OPT_STRING, | |
2707 | .help = "try to optimize zero writes (off, on, unmap)", | |
4d454574 PB |
2708 | }, |
2709 | { /* end of list */ } | |
2710 | }, | |
2711 | }; | |
0006383e KW |
2712 | |
2713 | QemuOptsList qemu_drive_opts = { | |
2714 | .name = "drive", | |
2715 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2716 | .desc = { | |
492fdc6f KW |
2717 | /* |
2718 | * no elements => accept any params | |
2719 | * validation will happen later | |
2720 | */ | |
0006383e KW |
2721 | { /* end of list */ } |
2722 | }, | |
2723 | }; |