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666daa68 MA |
1 | /* |
2 | * QEMU host block devices | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or | |
7 | * later. See the COPYING file in the top-level directory. | |
3618a094 MA |
8 | * |
9 | * This file incorporates work covered by the following copyright and | |
10 | * permission notice: | |
11 | * | |
12 | * Copyright (c) 2003-2008 Fabrice Bellard | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
15 | * of this software and associated documentation files (the "Software"), to deal | |
16 | * in the Software without restriction, including without limitation the rights | |
17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
18 | * copies of the Software, and to permit persons to whom the Software is | |
19 | * furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice shall be included in | |
22 | * all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
30 | * THE SOFTWARE. | |
666daa68 MA |
31 | */ |
32 | ||
9c17d615 | 33 | #include "sysemu/blockdev.h" |
0d09e41a | 34 | #include "hw/block/block.h" |
737e150e | 35 | #include "block/blockjob.h" |
83c9089e | 36 | #include "monitor/monitor.h" |
7b1b5d19 | 37 | #include "qapi/qmp/qerror.h" |
1de7afc9 PB |
38 | #include "qemu/option.h" |
39 | #include "qemu/config-file.h" | |
7b1b5d19 | 40 | #include "qapi/qmp/types.h" |
d26c9a15 KW |
41 | #include "qapi-visit.h" |
42 | #include "qapi/qmp-output-visitor.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) { |
84fb3925 | 110 | drive_put_ref(dinfo); |
14bafc54 MA |
111 | } |
112 | } | |
113 | ||
505a7fb1 MA |
114 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
115 | { | |
116 | int max_devs = if_max_devs[type]; | |
117 | return max_devs ? index / max_devs : 0; | |
118 | } | |
119 | ||
120 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
121 | { | |
122 | int max_devs = if_max_devs[type]; | |
123 | return max_devs ? index % max_devs : index; | |
124 | } | |
125 | ||
2292ddae MA |
126 | QemuOpts *drive_def(const char *optstr) |
127 | { | |
128 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
129 | } | |
130 | ||
131 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 132 | const char *optstr) |
666daa68 | 133 | { |
666daa68 | 134 | QemuOpts *opts; |
2292ddae | 135 | char buf[32]; |
666daa68 | 136 | |
2292ddae | 137 | opts = drive_def(optstr); |
666daa68 MA |
138 | if (!opts) { |
139 | return NULL; | |
140 | } | |
2292ddae MA |
141 | if (type != IF_DEFAULT) { |
142 | qemu_opt_set(opts, "if", if_name[type]); | |
143 | } | |
144 | if (index >= 0) { | |
145 | snprintf(buf, sizeof(buf), "%d", index); | |
146 | qemu_opt_set(opts, "index", buf); | |
147 | } | |
666daa68 MA |
148 | if (file) |
149 | qemu_opt_set(opts, "file", file); | |
150 | return opts; | |
151 | } | |
152 | ||
153 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
154 | { | |
155 | DriveInfo *dinfo; | |
156 | ||
157 | /* seek interface, bus and unit */ | |
158 | ||
159 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
160 | if (dinfo->type == type && | |
161 | dinfo->bus == bus && | |
162 | dinfo->unit == unit) | |
163 | return dinfo; | |
164 | } | |
165 | ||
166 | return NULL; | |
167 | } | |
168 | ||
f1bd51ac MA |
169 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
170 | { | |
171 | return drive_get(type, | |
172 | drive_index_to_bus_id(type, index), | |
173 | drive_index_to_unit_id(type, index)); | |
174 | } | |
175 | ||
666daa68 MA |
176 | int drive_get_max_bus(BlockInterfaceType type) |
177 | { | |
178 | int max_bus; | |
179 | DriveInfo *dinfo; | |
180 | ||
181 | max_bus = -1; | |
182 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
183 | if(dinfo->type == type && | |
184 | dinfo->bus > max_bus) | |
185 | max_bus = dinfo->bus; | |
186 | } | |
187 | return max_bus; | |
188 | } | |
189 | ||
13839974 MA |
190 | /* Get a block device. This should only be used for single-drive devices |
191 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
192 | appropriate bus. */ | |
193 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
194 | { | |
195 | static int next_block_unit[IF_COUNT]; | |
196 | ||
197 | return drive_get(type, 0, next_block_unit[type]++); | |
198 | } | |
199 | ||
e4700e59 | 200 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
201 | { |
202 | DriveInfo *dinfo; | |
203 | ||
204 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
205 | if (dinfo->bdrv == bs) { |
206 | return dinfo; | |
207 | } | |
666daa68 | 208 | } |
e4700e59 | 209 | return NULL; |
666daa68 MA |
210 | } |
211 | ||
666daa68 MA |
212 | static void bdrv_format_print(void *opaque, const char *name) |
213 | { | |
807105a7 | 214 | error_printf(" %s", name); |
666daa68 MA |
215 | } |
216 | ||
84fb3925 | 217 | static void drive_uninit(DriveInfo *dinfo) |
666daa68 | 218 | { |
f298d071 KW |
219 | if (dinfo->opts) { |
220 | qemu_opts_del(dinfo->opts); | |
221 | } | |
222 | ||
4f6fd349 | 223 | bdrv_unref(dinfo->bdrv); |
7267c094 | 224 | g_free(dinfo->id); |
666daa68 | 225 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 226 | g_free(dinfo->serial); |
7267c094 | 227 | g_free(dinfo); |
666daa68 MA |
228 | } |
229 | ||
84fb3925 MT |
230 | void drive_put_ref(DriveInfo *dinfo) |
231 | { | |
232 | assert(dinfo->refcount); | |
233 | if (--dinfo->refcount == 0) { | |
234 | drive_uninit(dinfo); | |
235 | } | |
236 | } | |
237 | ||
238 | void drive_get_ref(DriveInfo *dinfo) | |
239 | { | |
240 | dinfo->refcount++; | |
241 | } | |
242 | ||
aa398a5c SH |
243 | typedef struct { |
244 | QEMUBH *bh; | |
fa510ebf FZ |
245 | BlockDriverState *bs; |
246 | } BDRVPutRefBH; | |
aa398a5c | 247 | |
fa510ebf | 248 | static void bdrv_put_ref_bh(void *opaque) |
aa398a5c | 249 | { |
fa510ebf | 250 | BDRVPutRefBH *s = opaque; |
aa398a5c | 251 | |
fa510ebf | 252 | bdrv_unref(s->bs); |
aa398a5c SH |
253 | qemu_bh_delete(s->bh); |
254 | g_free(s); | |
255 | } | |
256 | ||
257 | /* | |
fa510ebf | 258 | * Release a BDS reference in a BH |
aa398a5c | 259 | * |
fa510ebf FZ |
260 | * It is not safe to use bdrv_unref() from a callback function when the callers |
261 | * still need the BlockDriverState. In such cases we schedule a BH to release | |
262 | * the reference. | |
aa398a5c | 263 | */ |
fa510ebf | 264 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
aa398a5c | 265 | { |
fa510ebf | 266 | BDRVPutRefBH *s; |
aa398a5c | 267 | |
fa510ebf FZ |
268 | s = g_new(BDRVPutRefBH, 1); |
269 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); | |
270 | s->bs = bs; | |
aa398a5c SH |
271 | qemu_bh_schedule(s->bh); |
272 | } | |
273 | ||
b681072d | 274 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
275 | { |
276 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 277 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 278 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 279 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 280 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 281 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 282 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 283 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 284 | } else { |
b681072d KW |
285 | error_setg(errp, "'%s' invalid %s error action", |
286 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
287 | return -1; |
288 | } | |
289 | } | |
290 | ||
cc0681c4 | 291 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 292 | { |
cc0681c4 BC |
293 | if (throttle_conflicting(cfg)) { |
294 | error_setg(errp, "bps/iops/max total values and read/write values" | |
295 | " cannot be used at the same time"); | |
0563e191 ZYW |
296 | return false; |
297 | } | |
298 | ||
cc0681c4 BC |
299 | if (!throttle_is_valid(cfg)) { |
300 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
301 | return false; |
302 | } | |
303 | ||
0563e191 ZYW |
304 | return true; |
305 | } | |
306 | ||
33cb7dc8 KW |
307 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
308 | ||
f298d071 KW |
309 | /* Takes the ownership of bs_opts */ |
310 | static DriveInfo *blockdev_init(QDict *bs_opts, | |
b681072d KW |
311 | BlockInterfaceType type, |
312 | Error **errp) | |
666daa68 MA |
313 | { |
314 | const char *buf; | |
315 | const char *file = NULL; | |
666daa68 | 316 | const char *serial; |
666daa68 MA |
317 | int ro = 0; |
318 | int bdrv_flags = 0; | |
319 | int on_read_error, on_write_error; | |
666daa68 | 320 | DriveInfo *dinfo; |
cc0681c4 | 321 | ThrottleConfig cfg; |
666daa68 | 322 | int snapshot = 0; |
fb0490f6 | 323 | bool copy_on_read; |
666daa68 | 324 | int ret; |
c546194f | 325 | Error *error = NULL; |
0006383e | 326 | QemuOpts *opts; |
0006383e | 327 | const char *id; |
74fe54f2 | 328 | bool has_driver_specific_opts; |
6db5f5d6 | 329 | BlockDriver *drv = NULL; |
666daa68 | 330 | |
f298d071 KW |
331 | /* Check common options by copying from bs_opts to opts, all other options |
332 | * stay in bs_opts for processing by bdrv_open(). */ | |
333 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e KW |
334 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
335 | if (error_is_set(&error)) { | |
b681072d | 336 | error_propagate(errp, error); |
0006383e KW |
337 | return NULL; |
338 | } | |
339 | ||
0006383e KW |
340 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
341 | if (error_is_set(&error)) { | |
b681072d | 342 | error_propagate(errp, error); |
ec9c10d2 | 343 | goto early_err; |
0006383e KW |
344 | } |
345 | ||
346 | if (id) { | |
347 | qdict_del(bs_opts, "id"); | |
348 | } | |
349 | ||
74fe54f2 KW |
350 | has_driver_specific_opts = !!qdict_size(bs_opts); |
351 | ||
666daa68 | 352 | /* extract parameters */ |
666daa68 | 353 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
0f227a94 | 354 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 355 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
356 | |
357 | file = qemu_opt_get(opts, "file"); | |
358 | serial = qemu_opt_get(opts, "serial"); | |
359 | ||
a9384aff PB |
360 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
361 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
b681072d | 362 | error_setg(errp, "invalid discard option"); |
ec9c10d2 | 363 | goto early_err; |
a9384aff PB |
364 | } |
365 | } | |
366 | ||
29c4e2b5 KW |
367 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
368 | bdrv_flags |= BDRV_O_CACHE_WB; | |
369 | } | |
370 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
371 | bdrv_flags |= BDRV_O_NOCACHE; | |
372 | } | |
1df6fa4b | 373 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
29c4e2b5 | 374 | bdrv_flags |= BDRV_O_NO_FLUSH; |
666daa68 MA |
375 | } |
376 | ||
377 | #ifdef CONFIG_LINUX_AIO | |
378 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
379 | if (!strcmp(buf, "native")) { | |
380 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
381 | } else if (!strcmp(buf, "threads")) { | |
382 | /* this is the default */ | |
383 | } else { | |
b681072d | 384 | error_setg(errp, "invalid aio option"); |
ec9c10d2 | 385 | goto early_err; |
666daa68 MA |
386 | } |
387 | } | |
388 | #endif | |
389 | ||
390 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
391 | if (is_help_option(buf)) { |
392 | error_printf("Supported formats:"); | |
393 | bdrv_iterate_format(bdrv_format_print, NULL); | |
394 | error_printf("\n"); | |
ec9c10d2 | 395 | goto early_err; |
666daa68 | 396 | } |
74fe54f2 | 397 | |
8f94a6e4 | 398 | drv = bdrv_find_format(buf); |
6db5f5d6 | 399 | if (!drv) { |
b681072d | 400 | error_setg(errp, "'%s' invalid format", buf); |
ec9c10d2 | 401 | goto early_err; |
6db5f5d6 | 402 | } |
666daa68 MA |
403 | } |
404 | ||
0563e191 | 405 | /* disk I/O throttling */ |
cc0681c4 BC |
406 | memset(&cfg, 0, sizeof(cfg)); |
407 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 408 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 409 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 410 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 411 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 412 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 413 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 414 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 415 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 416 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 417 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 418 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 419 | |
3e9fab69 BC |
420 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
421 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
422 | cfg.buckets[THROTTLE_BPS_READ].max = | |
423 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
424 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
425 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
426 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
427 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
428 | cfg.buckets[THROTTLE_OPS_READ].max = | |
429 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
430 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
431 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 432 | |
2024c1df | 433 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
434 | |
435 | if (!check_throttle_config(&cfg, &error)) { | |
b681072d | 436 | error_propagate(errp, error); |
ec9c10d2 | 437 | goto early_err; |
0563e191 ZYW |
438 | } |
439 | ||
92aa5c6d | 440 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
441 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
442 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
b681072d | 443 | error_setg(errp, "werror is not supported by this bus type"); |
ec9c10d2 | 444 | goto early_err; |
666daa68 MA |
445 | } |
446 | ||
b681072d KW |
447 | on_write_error = parse_block_error_action(buf, 0, &error); |
448 | if (error_is_set(&error)) { | |
449 | error_propagate(errp, error); | |
ec9c10d2 | 450 | goto early_err; |
666daa68 MA |
451 | } |
452 | } | |
453 | ||
92aa5c6d | 454 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 455 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 456 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 457 | error_report("rerror is not supported by this bus type"); |
ec9c10d2 | 458 | goto early_err; |
666daa68 MA |
459 | } |
460 | ||
b681072d KW |
461 | on_read_error = parse_block_error_action(buf, 1, &error); |
462 | if (error_is_set(&error)) { | |
463 | error_propagate(errp, error); | |
ec9c10d2 | 464 | goto early_err; |
666daa68 MA |
465 | } |
466 | } | |
467 | ||
326642bc KW |
468 | /* init */ |
469 | dinfo = g_malloc0(sizeof(*dinfo)); | |
470 | dinfo->id = g_strdup(qemu_opts_id(opts)); | |
666daa68 | 471 | dinfo->bdrv = bdrv_new(dinfo->id); |
80dd1aae KS |
472 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
473 | dinfo->bdrv->read_only = ro; | |
666daa68 | 474 | dinfo->type = type; |
84fb3925 | 475 | dinfo->refcount = 1; |
bb44619b KW |
476 | if (serial != NULL) { |
477 | dinfo->serial = g_strdup(serial); | |
478 | } | |
666daa68 MA |
479 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
480 | ||
abd7f68d MA |
481 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
482 | ||
0563e191 | 483 | /* disk I/O throttling */ |
cc0681c4 BC |
484 | if (throttle_enabled(&cfg)) { |
485 | bdrv_io_limits_enable(dinfo->bdrv); | |
486 | bdrv_set_io_limits(dinfo->bdrv, &cfg); | |
487 | } | |
0563e191 | 488 | |
dd5b0d71 | 489 | if (!file || !*file) { |
74fe54f2 | 490 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
491 | file = NULL; |
492 | } else { | |
ec9c10d2 SH |
493 | QDECREF(bs_opts); |
494 | qemu_opts_del(opts); | |
c2ad1b0c KW |
495 | return dinfo; |
496 | } | |
666daa68 MA |
497 | } |
498 | if (snapshot) { | |
499 | /* always use cache=unsafe with snapshot */ | |
500 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
501 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
502 | } | |
503 | ||
fb0490f6 SH |
504 | if (copy_on_read) { |
505 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
506 | } | |
507 | ||
ed9d4205 BC |
508 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
509 | bdrv_flags |= BDRV_O_INCOMING; | |
510 | } | |
511 | ||
666daa68 MA |
512 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; |
513 | ||
74fe54f2 | 514 | QINCREF(bs_opts); |
34b5d2c6 | 515 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv, &error); |
0006383e | 516 | |
666daa68 | 517 | if (ret < 0) { |
b681072d KW |
518 | error_setg(errp, "could not open disk image %s: %s", |
519 | file ?: dinfo->id, error_get_pretty(error)); | |
520 | error_free(error); | |
a9ae2bff | 521 | goto err; |
666daa68 MA |
522 | } |
523 | ||
524 | if (bdrv_key_required(dinfo->bdrv)) | |
525 | autostart = 0; | |
0006383e | 526 | |
74fe54f2 | 527 | QDECREF(bs_opts); |
0006383e KW |
528 | qemu_opts_del(opts); |
529 | ||
666daa68 | 530 | return dinfo; |
a9ae2bff MA |
531 | |
532 | err: | |
4f6fd349 | 533 | bdrv_unref(dinfo->bdrv); |
7267c094 | 534 | g_free(dinfo->id); |
a9ae2bff | 535 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 536 | g_free(dinfo); |
ec9c10d2 SH |
537 | early_err: |
538 | QDECREF(bs_opts); | |
539 | qemu_opts_del(opts); | |
a9ae2bff | 540 | return NULL; |
666daa68 MA |
541 | } |
542 | ||
57975222 KW |
543 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
544 | { | |
545 | const char *value; | |
546 | ||
547 | value = qemu_opt_get(opts, from); | |
548 | if (value) { | |
549 | qemu_opt_set(opts, to, value); | |
550 | qemu_opt_unset(opts, from); | |
551 | } | |
552 | } | |
553 | ||
33cb7dc8 KW |
554 | QemuOptsList qemu_legacy_drive_opts = { |
555 | .name = "drive", | |
556 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
557 | .desc = { | |
558 | { | |
87a899c5 KW |
559 | .name = "bus", |
560 | .type = QEMU_OPT_NUMBER, | |
561 | .help = "bus number", | |
562 | },{ | |
563 | .name = "unit", | |
564 | .type = QEMU_OPT_NUMBER, | |
565 | .help = "unit number (i.e. lun for scsi)", | |
566 | },{ | |
567 | .name = "index", | |
568 | .type = QEMU_OPT_NUMBER, | |
569 | .help = "index number", | |
570 | },{ | |
33cb7dc8 KW |
571 | .name = "media", |
572 | .type = QEMU_OPT_STRING, | |
573 | .help = "media type (disk, cdrom)", | |
593d464b KW |
574 | },{ |
575 | .name = "if", | |
576 | .type = QEMU_OPT_STRING, | |
577 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
578 | },{ |
579 | .name = "cyls", | |
580 | .type = QEMU_OPT_NUMBER, | |
581 | .help = "number of cylinders (ide disk geometry)", | |
582 | },{ | |
583 | .name = "heads", | |
584 | .type = QEMU_OPT_NUMBER, | |
585 | .help = "number of heads (ide disk geometry)", | |
586 | },{ | |
587 | .name = "secs", | |
588 | .type = QEMU_OPT_NUMBER, | |
589 | .help = "number of sectors (ide disk geometry)", | |
590 | },{ | |
591 | .name = "trans", | |
592 | .type = QEMU_OPT_STRING, | |
593 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
594 | },{ |
595 | .name = "boot", | |
596 | .type = QEMU_OPT_BOOL, | |
597 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
598 | },{ |
599 | .name = "addr", | |
600 | .type = QEMU_OPT_STRING, | |
601 | .help = "pci address (virtio only)", | |
33cb7dc8 | 602 | }, |
0ebd24e0 KW |
603 | |
604 | /* Options that are passed on, but have special semantics with -drive */ | |
605 | { | |
606 | .name = "read-only", | |
607 | .type = QEMU_OPT_BOOL, | |
608 | .help = "open drive file as read-only", | |
609 | },{ | |
610 | .name = "copy-on-read", | |
611 | .type = QEMU_OPT_BOOL, | |
612 | .help = "copy read data from backing file into image file", | |
613 | }, | |
614 | ||
33cb7dc8 KW |
615 | { /* end of list */ } |
616 | }, | |
617 | }; | |
618 | ||
57975222 KW |
619 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
620 | { | |
29c4e2b5 | 621 | const char *value; |
33cb7dc8 | 622 | DriveInfo *dinfo = NULL; |
f298d071 | 623 | QDict *bs_opts; |
33cb7dc8 KW |
624 | QemuOpts *legacy_opts; |
625 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 626 | BlockInterfaceType type; |
b41a7338 | 627 | int cyls, heads, secs, translation; |
87a899c5 | 628 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 629 | const char *devaddr; |
a7fdbcf0 FZ |
630 | bool read_only = false; |
631 | bool copy_on_read; | |
33cb7dc8 | 632 | Error *local_err = NULL; |
29c4e2b5 | 633 | |
57975222 KW |
634 | /* Change legacy command line options into QMP ones */ |
635 | qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); | |
636 | qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); | |
637 | qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); | |
638 | ||
639 | qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); | |
640 | qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); | |
641 | qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); | |
642 | ||
3e9fab69 BC |
643 | qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max"); |
644 | qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max"); | |
645 | qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max"); | |
646 | ||
647 | qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max"); | |
648 | qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max"); | |
649 | qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max"); | |
650 | ||
2024c1df BC |
651 | qemu_opt_rename(all_opts, |
652 | "iops_size", "throttling.iops-size"); | |
653 | ||
0f227a94 KW |
654 | qemu_opt_rename(all_opts, "readonly", "read-only"); |
655 | ||
29c4e2b5 KW |
656 | value = qemu_opt_get(all_opts, "cache"); |
657 | if (value) { | |
658 | int flags = 0; | |
659 | ||
660 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
661 | error_report("invalid cache option"); | |
662 | return NULL; | |
663 | } | |
664 | ||
665 | /* Specific options take precedence */ | |
666 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
667 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
668 | !!(flags & BDRV_O_CACHE_WB)); | |
669 | } | |
670 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
671 | qemu_opt_set_bool(all_opts, "cache.direct", | |
672 | !!(flags & BDRV_O_NOCACHE)); | |
673 | } | |
674 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
675 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
676 | !!(flags & BDRV_O_NO_FLUSH)); | |
677 | } | |
678 | qemu_opt_unset(all_opts, "cache"); | |
679 | } | |
680 | ||
f298d071 KW |
681 | /* Get a QDict for processing the options */ |
682 | bs_opts = qdict_new(); | |
683 | qemu_opts_to_qdict(all_opts, bs_opts); | |
684 | ||
87ea75d5 PC |
685 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
686 | &error_abort); | |
33cb7dc8 KW |
687 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
688 | if (error_is_set(&local_err)) { | |
689 | qerror_report_err(local_err); | |
690 | error_free(local_err); | |
691 | goto fail; | |
692 | } | |
693 | ||
26929298 KW |
694 | /* Deprecated option boot=[on|off] */ |
695 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
696 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
697 | "ignored. Future versions will reject this parameter. Please " | |
698 | "update your scripts.\n"); | |
699 | } | |
700 | ||
33cb7dc8 KW |
701 | /* Media type */ |
702 | value = qemu_opt_get(legacy_opts, "media"); | |
703 | if (value) { | |
704 | if (!strcmp(value, "disk")) { | |
705 | media = MEDIA_DISK; | |
706 | } else if (!strcmp(value, "cdrom")) { | |
707 | media = MEDIA_CDROM; | |
a7fdbcf0 | 708 | read_only = true; |
33cb7dc8 KW |
709 | } else { |
710 | error_report("'%s' invalid media", value); | |
711 | goto fail; | |
712 | } | |
713 | } | |
714 | ||
0ebd24e0 | 715 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 716 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
717 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
718 | ||
719 | if (read_only && copy_on_read) { | |
720 | error_report("warning: disabling copy-on-read on read-only drive"); | |
721 | copy_on_read = false; | |
722 | } | |
723 | ||
724 | qdict_put(bs_opts, "read-only", | |
725 | qstring_from_str(read_only ? "on" : "off")); | |
726 | qdict_put(bs_opts, "copy-on-read", | |
727 | qstring_from_str(copy_on_read ? "on" :"off")); | |
728 | ||
593d464b KW |
729 | /* Controller type */ |
730 | value = qemu_opt_get(legacy_opts, "if"); | |
731 | if (value) { | |
732 | for (type = 0; | |
733 | type < IF_COUNT && strcmp(value, if_name[type]); | |
734 | type++) { | |
735 | } | |
736 | if (type == IF_COUNT) { | |
737 | error_report("unsupported bus type '%s'", value); | |
738 | goto fail; | |
739 | } | |
740 | } else { | |
741 | type = block_default_type; | |
742 | } | |
743 | ||
b41a7338 KW |
744 | /* Geometry */ |
745 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
746 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
747 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
748 | ||
749 | if (cyls || heads || secs) { | |
750 | if (cyls < 1) { | |
751 | error_report("invalid physical cyls number"); | |
752 | goto fail; | |
753 | } | |
754 | if (heads < 1) { | |
755 | error_report("invalid physical heads number"); | |
756 | goto fail; | |
757 | } | |
758 | if (secs < 1) { | |
759 | error_report("invalid physical secs number"); | |
760 | goto fail; | |
761 | } | |
762 | } | |
763 | ||
764 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
765 | value = qemu_opt_get(legacy_opts, "trans"); | |
766 | if (value != NULL) { | |
767 | if (!cyls) { | |
768 | error_report("'%s' trans must be used with cyls, heads and secs", | |
769 | value); | |
770 | goto fail; | |
771 | } | |
772 | if (!strcmp(value, "none")) { | |
773 | translation = BIOS_ATA_TRANSLATION_NONE; | |
774 | } else if (!strcmp(value, "lba")) { | |
775 | translation = BIOS_ATA_TRANSLATION_LBA; | |
776 | } else if (!strcmp(value, "auto")) { | |
777 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
778 | } else { | |
779 | error_report("'%s' invalid translation type", value); | |
780 | goto fail; | |
781 | } | |
782 | } | |
783 | ||
784 | if (media == MEDIA_CDROM) { | |
785 | if (cyls || secs || heads) { | |
786 | error_report("CHS can't be set with media=cdrom"); | |
787 | goto fail; | |
788 | } | |
789 | } | |
790 | ||
87a899c5 KW |
791 | /* Device address specified by bus/unit or index. |
792 | * If none was specified, try to find the first free one. */ | |
793 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
794 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
795 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
796 | ||
797 | max_devs = if_max_devs[type]; | |
798 | ||
799 | if (index != -1) { | |
800 | if (bus_id != 0 || unit_id != -1) { | |
801 | error_report("index cannot be used with bus and unit"); | |
802 | goto fail; | |
803 | } | |
804 | bus_id = drive_index_to_bus_id(type, index); | |
805 | unit_id = drive_index_to_unit_id(type, index); | |
806 | } | |
807 | ||
808 | if (unit_id == -1) { | |
809 | unit_id = 0; | |
810 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
811 | unit_id++; | |
812 | if (max_devs && unit_id >= max_devs) { | |
813 | unit_id -= max_devs; | |
814 | bus_id++; | |
815 | } | |
816 | } | |
817 | } | |
818 | ||
819 | if (max_devs && unit_id >= max_devs) { | |
820 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
821 | goto fail; | |
822 | } | |
823 | ||
824 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
825 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
826 | bus_id, unit_id, index); | |
827 | goto fail; | |
828 | } | |
829 | ||
830 | /* no id supplied -> create one */ | |
831 | if (qemu_opts_id(all_opts) == NULL) { | |
832 | char *new_id; | |
833 | const char *mediastr = ""; | |
834 | if (type == IF_IDE || type == IF_SCSI) { | |
835 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
836 | } | |
837 | if (max_devs) { | |
838 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
839 | mediastr, unit_id); | |
840 | } else { | |
841 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
842 | mediastr, unit_id); | |
843 | } | |
844 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
845 | g_free(new_id); | |
846 | } | |
847 | ||
394c7d4d KW |
848 | /* Add virtio block device */ |
849 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
850 | if (devaddr && type != IF_VIRTIO) { | |
851 | error_report("addr is not supported by this bus type"); | |
852 | goto fail; | |
853 | } | |
854 | ||
855 | if (type == IF_VIRTIO) { | |
856 | QemuOpts *devopts; | |
87ea75d5 PC |
857 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
858 | &error_abort); | |
394c7d4d KW |
859 | if (arch_type == QEMU_ARCH_S390X) { |
860 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); | |
861 | } else { | |
862 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); | |
863 | } | |
864 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id")); | |
865 | if (devaddr) { | |
866 | qemu_opt_set(devopts, "addr", devaddr); | |
867 | } | |
868 | } | |
869 | ||
2d246f01 | 870 | /* Actual block device init: Functionality shared with blockdev-add */ |
b681072d | 871 | dinfo = blockdev_init(bs_opts, type, &local_err); |
2d246f01 | 872 | if (dinfo == NULL) { |
b681072d KW |
873 | if (error_is_set(&local_err)) { |
874 | qerror_report_err(local_err); | |
875 | error_free(local_err); | |
876 | } | |
2d246f01 | 877 | goto fail; |
b681072d KW |
878 | } else { |
879 | assert(!error_is_set(&local_err)); | |
2d246f01 KW |
880 | } |
881 | ||
882 | /* Set legacy DriveInfo fields */ | |
883 | dinfo->enable_auto_del = true; | |
f298d071 | 884 | dinfo->opts = all_opts; |
2d246f01 | 885 | |
b41a7338 KW |
886 | dinfo->cyls = cyls; |
887 | dinfo->heads = heads; | |
888 | dinfo->secs = secs; | |
889 | dinfo->trans = translation; | |
890 | ||
87a899c5 KW |
891 | dinfo->bus = bus_id; |
892 | dinfo->unit = unit_id; | |
394c7d4d | 893 | dinfo->devaddr = devaddr; |
87a899c5 | 894 | |
e34ef046 KW |
895 | switch(type) { |
896 | case IF_IDE: | |
897 | case IF_SCSI: | |
898 | case IF_XEN: | |
899 | case IF_NONE: | |
900 | dinfo->media_cd = media == MEDIA_CDROM; | |
901 | break; | |
902 | default: | |
903 | break; | |
904 | } | |
905 | ||
2d246f01 | 906 | fail: |
33cb7dc8 | 907 | qemu_opts_del(legacy_opts); |
2d246f01 | 908 | return dinfo; |
57975222 KW |
909 | } |
910 | ||
666daa68 MA |
911 | void do_commit(Monitor *mon, const QDict *qdict) |
912 | { | |
666daa68 | 913 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 914 | BlockDriverState *bs; |
e8877497 | 915 | int ret; |
666daa68 | 916 | |
6ab4b5ab | 917 | if (!strcmp(device, "all")) { |
e8877497 | 918 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
919 | } else { |
920 | bs = bdrv_find(device); | |
ac59eb95 | 921 | if (!bs) { |
58513bde | 922 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 923 | return; |
6ab4b5ab | 924 | } |
2d3735d3 | 925 | ret = bdrv_commit(bs); |
58513bde JC |
926 | } |
927 | if (ret < 0) { | |
928 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
929 | strerror(-ret)); | |
666daa68 MA |
930 | } |
931 | } | |
932 | ||
6cc2a415 PB |
933 | static void blockdev_do_action(int kind, void *data, Error **errp) |
934 | { | |
c8a83e85 KW |
935 | TransactionAction action; |
936 | TransactionActionList list; | |
6cc2a415 PB |
937 | |
938 | action.kind = kind; | |
939 | action.data = data; | |
940 | list.value = &action; | |
941 | list.next = NULL; | |
942 | qmp_transaction(&list, errp); | |
943 | } | |
944 | ||
6106e249 LC |
945 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
946 | bool has_format, const char *format, | |
6cc2a415 | 947 | bool has_mode, enum NewImageMode mode, |
6106e249 | 948 | Error **errp) |
f8882568 | 949 | { |
6cc2a415 PB |
950 | BlockdevSnapshot snapshot = { |
951 | .device = (char *) device, | |
952 | .snapshot_file = (char *) snapshot_file, | |
953 | .has_format = has_format, | |
954 | .format = (char *) format, | |
955 | .has_mode = has_mode, | |
956 | .mode = mode, | |
957 | }; | |
c8a83e85 KW |
958 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
959 | &snapshot, errp); | |
f8882568 JS |
960 | } |
961 | ||
f323bc9e WX |
962 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
963 | const char *name, | |
964 | Error **errp) | |
965 | { | |
966 | BlockdevSnapshotInternal snapshot = { | |
967 | .device = (char *) device, | |
968 | .name = (char *) name | |
969 | }; | |
970 | ||
971 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
972 | &snapshot, errp); | |
973 | } | |
974 | ||
44e3e053 WX |
975 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
976 | bool has_id, | |
977 | const char *id, | |
978 | bool has_name, | |
979 | const char *name, | |
980 | Error **errp) | |
981 | { | |
982 | BlockDriverState *bs = bdrv_find(device); | |
983 | QEMUSnapshotInfo sn; | |
984 | Error *local_err = NULL; | |
985 | SnapshotInfo *info = NULL; | |
986 | int ret; | |
987 | ||
988 | if (!bs) { | |
989 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
990 | return NULL; | |
991 | } | |
992 | ||
993 | if (!has_id) { | |
994 | id = NULL; | |
995 | } | |
996 | ||
997 | if (!has_name) { | |
998 | name = NULL; | |
999 | } | |
1000 | ||
1001 | if (!id && !name) { | |
1002 | error_setg(errp, "Name or id must be provided"); | |
1003 | return NULL; | |
1004 | } | |
1005 | ||
1006 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); | |
1007 | if (error_is_set(&local_err)) { | |
1008 | error_propagate(errp, local_err); | |
1009 | return NULL; | |
1010 | } | |
1011 | if (!ret) { | |
1012 | error_setg(errp, | |
1013 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1014 | "device '%s'", | |
1015 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
1016 | return NULL; | |
1017 | } | |
1018 | ||
1019 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
1020 | if (error_is_set(&local_err)) { | |
1021 | error_propagate(errp, local_err); | |
1022 | return NULL; | |
1023 | } | |
1024 | ||
1025 | info = g_malloc0(sizeof(SnapshotInfo)); | |
1026 | info->id = g_strdup(sn.id_str); | |
1027 | info->name = g_strdup(sn.name); | |
1028 | info->date_nsec = sn.date_nsec; | |
1029 | info->date_sec = sn.date_sec; | |
1030 | info->vm_state_size = sn.vm_state_size; | |
1031 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1032 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1033 | ||
1034 | return info; | |
1035 | } | |
8802d1fd JC |
1036 | |
1037 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 1038 | |
ba5d6ab6 | 1039 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
1040 | |
1041 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
1042 | abort() will be called, clean() will always be called if it present. */ | |
1043 | typedef struct BdrvActionOps { | |
1044 | /* Size of state struct, in bytes. */ | |
1045 | size_t instance_size; | |
1046 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 1047 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 1048 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 1049 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 1050 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 1051 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 1052 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 1053 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
1054 | } BdrvActionOps; |
1055 | ||
1056 | /* | |
1057 | * This structure must be arranged as first member in child type, assuming | |
1058 | * that compiler will also arrange it to the same address with parent instance. | |
1059 | * Later it will be used in free(). | |
1060 | */ | |
ba5d6ab6 | 1061 | struct BlkTransactionState { |
c8a83e85 | 1062 | TransactionAction *action; |
ba0c86a3 | 1063 | const BdrvActionOps *ops; |
ba5d6ab6 | 1064 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
1065 | }; |
1066 | ||
bbe86010 WX |
1067 | /* internal snapshot private data */ |
1068 | typedef struct InternalSnapshotState { | |
1069 | BlkTransactionState common; | |
1070 | BlockDriverState *bs; | |
1071 | QEMUSnapshotInfo sn; | |
1072 | } InternalSnapshotState; | |
1073 | ||
1074 | static void internal_snapshot_prepare(BlkTransactionState *common, | |
1075 | Error **errp) | |
1076 | { | |
1077 | const char *device; | |
1078 | const char *name; | |
1079 | BlockDriverState *bs; | |
1080 | QEMUSnapshotInfo old_sn, *sn; | |
1081 | bool ret; | |
1082 | qemu_timeval tv; | |
1083 | BlockdevSnapshotInternal *internal; | |
1084 | InternalSnapshotState *state; | |
1085 | int ret1; | |
1086 | ||
1087 | g_assert(common->action->kind == | |
1088 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); | |
1089 | internal = common->action->blockdev_snapshot_internal_sync; | |
1090 | state = DO_UPCAST(InternalSnapshotState, common, common); | |
1091 | ||
1092 | /* 1. parse input */ | |
1093 | device = internal->device; | |
1094 | name = internal->name; | |
1095 | ||
1096 | /* 2. check for validation */ | |
1097 | bs = bdrv_find(device); | |
1098 | if (!bs) { | |
1099 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | if (!bdrv_is_inserted(bs)) { | |
1104 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1105 | return; | |
1106 | } | |
1107 | ||
1108 | if (bdrv_is_read_only(bs)) { | |
1109 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1110 | return; | |
1111 | } | |
1112 | ||
1113 | if (!bdrv_can_snapshot(bs)) { | |
1114 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, | |
1115 | bs->drv->format_name, device, "internal snapshot"); | |
1116 | return; | |
1117 | } | |
1118 | ||
1119 | if (!strlen(name)) { | |
1120 | error_setg(errp, "Name is empty"); | |
1121 | return; | |
1122 | } | |
1123 | ||
1124 | /* check whether a snapshot with name exist */ | |
1125 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, errp); | |
1126 | if (error_is_set(errp)) { | |
1127 | return; | |
1128 | } else if (ret) { | |
1129 | error_setg(errp, | |
1130 | "Snapshot with name '%s' already exists on device '%s'", | |
1131 | name, device); | |
1132 | return; | |
1133 | } | |
1134 | ||
1135 | /* 3. take the snapshot */ | |
1136 | sn = &state->sn; | |
1137 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1138 | qemu_gettimeofday(&tv); | |
1139 | sn->date_sec = tv.tv_sec; | |
1140 | sn->date_nsec = tv.tv_usec * 1000; | |
1141 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1142 | ||
1143 | ret1 = bdrv_snapshot_create(bs, sn); | |
1144 | if (ret1 < 0) { | |
1145 | error_setg_errno(errp, -ret1, | |
1146 | "Failed to create snapshot '%s' on device '%s'", | |
1147 | name, device); | |
1148 | return; | |
1149 | } | |
1150 | ||
1151 | /* 4. succeed, mark a snapshot is created */ | |
1152 | state->bs = bs; | |
1153 | } | |
1154 | ||
1155 | static void internal_snapshot_abort(BlkTransactionState *common) | |
1156 | { | |
1157 | InternalSnapshotState *state = | |
1158 | DO_UPCAST(InternalSnapshotState, common, common); | |
1159 | BlockDriverState *bs = state->bs; | |
1160 | QEMUSnapshotInfo *sn = &state->sn; | |
1161 | Error *local_error = NULL; | |
1162 | ||
1163 | if (!bs) { | |
1164 | return; | |
1165 | } | |
1166 | ||
1167 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1168 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1169 | "device '%s' in abort: %s", | |
1170 | sn->id_str, | |
1171 | sn->name, | |
1172 | bdrv_get_device_name(bs), | |
1173 | error_get_pretty(local_error)); | |
1174 | error_free(local_error); | |
1175 | } | |
1176 | } | |
1177 | ||
ba0c86a3 | 1178 | /* external snapshot private data */ |
ba5d6ab6 SH |
1179 | typedef struct ExternalSnapshotState { |
1180 | BlkTransactionState common; | |
8802d1fd JC |
1181 | BlockDriverState *old_bs; |
1182 | BlockDriverState *new_bs; | |
ba5d6ab6 | 1183 | } ExternalSnapshotState; |
8802d1fd | 1184 | |
ba5d6ab6 | 1185 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
1186 | Error **errp) |
1187 | { | |
9b9877ee WX |
1188 | BlockDriver *drv; |
1189 | int flags, ret; | |
1190 | Error *local_err = NULL; | |
e2a31e87 WX |
1191 | const char *device; |
1192 | const char *new_image_file; | |
1193 | const char *format = "qcow2"; | |
1194 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
1195 | ExternalSnapshotState *state = |
1196 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1197 | TransactionAction *action = common->action; |
9b9877ee | 1198 | |
e2a31e87 | 1199 | /* get parameters */ |
c8a83e85 | 1200 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 WX |
1201 | |
1202 | device = action->blockdev_snapshot_sync->device; | |
1203 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; | |
1204 | if (action->blockdev_snapshot_sync->has_format) { | |
1205 | format = action->blockdev_snapshot_sync->format; | |
1206 | } | |
1207 | if (action->blockdev_snapshot_sync->has_mode) { | |
1208 | mode = action->blockdev_snapshot_sync->mode; | |
1209 | } | |
1210 | ||
1211 | /* start processing */ | |
9b9877ee WX |
1212 | drv = bdrv_find_format(format); |
1213 | if (!drv) { | |
1214 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1215 | return; | |
1216 | } | |
1217 | ||
ba5d6ab6 SH |
1218 | state->old_bs = bdrv_find(device); |
1219 | if (!state->old_bs) { | |
9b9877ee WX |
1220 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1221 | return; | |
1222 | } | |
1223 | ||
ba5d6ab6 | 1224 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
1225 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1226 | return; | |
1227 | } | |
1228 | ||
ba5d6ab6 | 1229 | if (bdrv_in_use(state->old_bs)) { |
9b9877ee WX |
1230 | error_set(errp, QERR_DEVICE_IN_USE, device); |
1231 | return; | |
1232 | } | |
1233 | ||
ba5d6ab6 SH |
1234 | if (!bdrv_is_read_only(state->old_bs)) { |
1235 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
1236 | error_set(errp, QERR_IO_ERROR); |
1237 | return; | |
1238 | } | |
1239 | } | |
1240 | ||
f6186f49 BC |
1241 | if (bdrv_check_ext_snapshot(state->old_bs) != EXT_SNAPSHOT_ALLOWED) { |
1242 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); | |
1243 | return; | |
1244 | } | |
1245 | ||
ba5d6ab6 | 1246 | flags = state->old_bs->open_flags; |
9b9877ee | 1247 | |
9b9877ee WX |
1248 | /* create new image w/backing file */ |
1249 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1250 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
1251 | state->old_bs->filename, |
1252 | state->old_bs->drv->format_name, | |
9b9877ee WX |
1253 | NULL, -1, flags, &local_err, false); |
1254 | if (error_is_set(&local_err)) { | |
1255 | error_propagate(errp, local_err); | |
1256 | return; | |
1257 | } | |
1258 | } | |
1259 | ||
1260 | /* We will manually add the backing_hd field to the bs later */ | |
ba5d6ab6 | 1261 | state->new_bs = bdrv_new(""); |
9b9877ee WX |
1262 | /* TODO Inherit bs->options or only take explicit options with an |
1263 | * extended QMP command? */ | |
ba5d6ab6 | 1264 | ret = bdrv_open(state->new_bs, new_image_file, NULL, |
34b5d2c6 | 1265 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
9b9877ee | 1266 | if (ret != 0) { |
34b5d2c6 | 1267 | error_propagate(errp, local_err); |
9b9877ee WX |
1268 | } |
1269 | } | |
1270 | ||
ba5d6ab6 | 1271 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 1272 | { |
ba5d6ab6 SH |
1273 | ExternalSnapshotState *state = |
1274 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1275 | |
ba5d6ab6 SH |
1276 | /* This removes our old bs and adds the new bs */ |
1277 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1278 | /* We don't need (or want) to use the transactional |
1279 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1280 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 1281 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
1282 | NULL); |
1283 | } | |
1284 | ||
ba5d6ab6 | 1285 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1286 | { |
ba5d6ab6 SH |
1287 | ExternalSnapshotState *state = |
1288 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1289 | if (state->new_bs) { | |
4f6fd349 | 1290 | bdrv_unref(state->new_bs); |
96b86bf7 WX |
1291 | } |
1292 | } | |
1293 | ||
3037f364 SH |
1294 | typedef struct DriveBackupState { |
1295 | BlkTransactionState common; | |
1296 | BlockDriverState *bs; | |
1297 | BlockJob *job; | |
1298 | } DriveBackupState; | |
1299 | ||
1300 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1301 | { | |
1302 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1303 | DriveBackup *backup; | |
1304 | Error *local_err = NULL; | |
1305 | ||
1306 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1307 | backup = common->action->drive_backup; | |
1308 | ||
1309 | qmp_drive_backup(backup->device, backup->target, | |
1310 | backup->has_format, backup->format, | |
b53169ea | 1311 | backup->sync, |
3037f364 SH |
1312 | backup->has_mode, backup->mode, |
1313 | backup->has_speed, backup->speed, | |
1314 | backup->has_on_source_error, backup->on_source_error, | |
1315 | backup->has_on_target_error, backup->on_target_error, | |
1316 | &local_err); | |
1317 | if (error_is_set(&local_err)) { | |
1318 | error_propagate(errp, local_err); | |
1319 | state->bs = NULL; | |
1320 | state->job = NULL; | |
1321 | return; | |
1322 | } | |
1323 | ||
1324 | state->bs = bdrv_find(backup->device); | |
1325 | state->job = state->bs->job; | |
1326 | } | |
1327 | ||
1328 | static void drive_backup_abort(BlkTransactionState *common) | |
1329 | { | |
1330 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1331 | BlockDriverState *bs = state->bs; | |
1332 | ||
1333 | /* Only cancel if it's the job we started */ | |
1334 | if (bs && bs->job && bs->job == state->job) { | |
1335 | block_job_cancel_sync(bs->job); | |
1336 | } | |
1337 | } | |
1338 | ||
78b18b78 SH |
1339 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1340 | { | |
1341 | error_setg(errp, "Transaction aborted using Abort action"); | |
1342 | } | |
1343 | ||
1344 | static void abort_commit(BlkTransactionState *common) | |
1345 | { | |
dfc6f865 | 1346 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1347 | } |
1348 | ||
ba0c86a3 | 1349 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1350 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1351 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1352 | .prepare = external_snapshot_prepare, |
1353 | .commit = external_snapshot_commit, | |
1354 | .abort = external_snapshot_abort, | |
1355 | }, | |
3037f364 SH |
1356 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1357 | .instance_size = sizeof(DriveBackupState), | |
1358 | .prepare = drive_backup_prepare, | |
1359 | .abort = drive_backup_abort, | |
1360 | }, | |
78b18b78 SH |
1361 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1362 | .instance_size = sizeof(BlkTransactionState), | |
1363 | .prepare = abort_prepare, | |
1364 | .commit = abort_commit, | |
1365 | }, | |
bbe86010 WX |
1366 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
1367 | .instance_size = sizeof(InternalSnapshotState), | |
1368 | .prepare = internal_snapshot_prepare, | |
1369 | .abort = internal_snapshot_abort, | |
1370 | }, | |
ba0c86a3 WX |
1371 | }; |
1372 | ||
8802d1fd JC |
1373 | /* |
1374 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1375 | * then we do not pivot any of the devices in the group, and abandon the | |
1376 | * snapshots | |
1377 | */ | |
c8a83e85 | 1378 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1379 | { |
c8a83e85 | 1380 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1381 | BlkTransactionState *state, *next; |
43e17041 | 1382 | Error *local_err = NULL; |
8802d1fd | 1383 | |
ba5d6ab6 | 1384 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1385 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1386 | ||
1387 | /* drain all i/o before any snapshots */ | |
1388 | bdrv_drain_all(); | |
1389 | ||
1390 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1391 | while (NULL != dev_entry) { | |
c8a83e85 | 1392 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1393 | const BdrvActionOps *ops; |
52e7c241 | 1394 | |
8802d1fd JC |
1395 | dev_info = dev_entry->value; |
1396 | dev_entry = dev_entry->next; | |
1397 | ||
ba0c86a3 WX |
1398 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1399 | ||
1400 | ops = &actions[dev_info->kind]; | |
aa3fe714 HR |
1401 | assert(ops->instance_size > 0); |
1402 | ||
ba5d6ab6 SH |
1403 | state = g_malloc0(ops->instance_size); |
1404 | state->ops = ops; | |
1405 | state->action = dev_info; | |
1406 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1407 | |
ba5d6ab6 | 1408 | state->ops->prepare(state, &local_err); |
ba0c86a3 WX |
1409 | if (error_is_set(&local_err)) { |
1410 | error_propagate(errp, local_err); | |
1411 | goto delete_and_fail; | |
8802d1fd | 1412 | } |
8802d1fd JC |
1413 | } |
1414 | ||
ba5d6ab6 | 1415 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1416 | if (state->ops->commit) { |
1417 | state->ops->commit(state); | |
1418 | } | |
8802d1fd JC |
1419 | } |
1420 | ||
1421 | /* success */ | |
1422 | goto exit; | |
1423 | ||
1424 | delete_and_fail: | |
1425 | /* | |
1426 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1427 | * the original bs for all images | |
1428 | */ | |
ba5d6ab6 SH |
1429 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1430 | if (state->ops->abort) { | |
1431 | state->ops->abort(state); | |
ba0c86a3 | 1432 | } |
8802d1fd JC |
1433 | } |
1434 | exit: | |
ba5d6ab6 SH |
1435 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1436 | if (state->ops->clean) { | |
1437 | state->ops->clean(state); | |
ba0c86a3 | 1438 | } |
ba5d6ab6 | 1439 | g_free(state); |
8802d1fd | 1440 | } |
8802d1fd JC |
1441 | } |
1442 | ||
1443 | ||
92d48558 | 1444 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1445 | { |
2d3735d3 SH |
1446 | if (bdrv_in_use(bs)) { |
1447 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
1448 | return; | |
1449 | } | |
2c6942fa | 1450 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
1451 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
1452 | return; | |
ea8f942f | 1453 | } |
92d48558 | 1454 | |
025ccaa7 PB |
1455 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1456 | bdrv_dev_eject_request(bs, force); | |
1457 | if (!force) { | |
92d48558 LC |
1458 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
1459 | return; | |
025ccaa7 | 1460 | } |
666daa68 | 1461 | } |
92d48558 | 1462 | |
3b5276b5 | 1463 | bdrv_close(bs); |
666daa68 MA |
1464 | } |
1465 | ||
c245b6a3 | 1466 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1467 | { |
1468 | BlockDriverState *bs; | |
666daa68 | 1469 | |
c245b6a3 | 1470 | bs = bdrv_find(device); |
666daa68 | 1471 | if (!bs) { |
c245b6a3 LC |
1472 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1473 | return; | |
92d48558 LC |
1474 | } |
1475 | ||
c245b6a3 | 1476 | eject_device(bs, force, errp); |
666daa68 MA |
1477 | } |
1478 | ||
a4dea8a9 | 1479 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
1480 | { |
1481 | BlockDriverState *bs; | |
1482 | int err; | |
1483 | ||
a4dea8a9 | 1484 | bs = bdrv_find(device); |
666daa68 | 1485 | if (!bs) { |
a4dea8a9 LC |
1486 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1487 | return; | |
666daa68 MA |
1488 | } |
1489 | ||
a4dea8a9 | 1490 | err = bdrv_set_key(bs, password); |
666daa68 | 1491 | if (err == -EINVAL) { |
a4dea8a9 LC |
1492 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1493 | return; | |
666daa68 | 1494 | } else if (err < 0) { |
a4dea8a9 LC |
1495 | error_set(errp, QERR_INVALID_PASSWORD); |
1496 | return; | |
666daa68 | 1497 | } |
666daa68 MA |
1498 | } |
1499 | ||
333a96ec LC |
1500 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1501 | int bdrv_flags, BlockDriver *drv, | |
1502 | const char *password, Error **errp) | |
1503 | { | |
34b5d2c6 | 1504 | Error *local_err = NULL; |
0eef407c LC |
1505 | int ret; |
1506 | ||
34b5d2c6 | 1507 | ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv, &local_err); |
0eef407c | 1508 | if (ret < 0) { |
34b5d2c6 | 1509 | error_propagate(errp, local_err); |
333a96ec LC |
1510 | return; |
1511 | } | |
1512 | ||
1513 | if (bdrv_key_required(bs)) { | |
1514 | if (password) { | |
1515 | if (bdrv_set_key(bs, password) < 0) { | |
1516 | error_set(errp, QERR_INVALID_PASSWORD); | |
1517 | } | |
1518 | } else { | |
1519 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1520 | bdrv_get_encrypted_filename(bs)); | |
1521 | } | |
1522 | } else if (password) { | |
1523 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | void qmp_change_blockdev(const char *device, const char *filename, | |
314f7ea7 | 1528 | const char *format, Error **errp) |
666daa68 MA |
1529 | { |
1530 | BlockDriverState *bs; | |
1531 | BlockDriver *drv = NULL; | |
1532 | int bdrv_flags; | |
92d48558 | 1533 | Error *err = NULL; |
666daa68 MA |
1534 | |
1535 | bs = bdrv_find(device); | |
1536 | if (!bs) { | |
333a96ec LC |
1537 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1538 | return; | |
666daa68 | 1539 | } |
333a96ec LC |
1540 | |
1541 | if (format) { | |
b64ec4e4 | 1542 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1543 | if (!drv) { |
333a96ec LC |
1544 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1545 | return; | |
666daa68 MA |
1546 | } |
1547 | } | |
333a96ec | 1548 | |
92d48558 LC |
1549 | eject_device(bs, 0, &err); |
1550 | if (error_is_set(&err)) { | |
333a96ec LC |
1551 | error_propagate(errp, err); |
1552 | return; | |
666daa68 | 1553 | } |
333a96ec | 1554 | |
528f7663 | 1555 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1556 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1557 | |
1558 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1559 | } |
9063f814 | 1560 | |
727f005e | 1561 | /* throttling disk I/O limits */ |
80047da5 | 1562 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1563 | int64_t bps_wr, |
1564 | int64_t iops, | |
1565 | int64_t iops_rd, | |
1566 | int64_t iops_wr, | |
1567 | bool has_bps_max, | |
1568 | int64_t bps_max, | |
1569 | bool has_bps_rd_max, | |
1570 | int64_t bps_rd_max, | |
1571 | bool has_bps_wr_max, | |
1572 | int64_t bps_wr_max, | |
1573 | bool has_iops_max, | |
1574 | int64_t iops_max, | |
1575 | bool has_iops_rd_max, | |
1576 | int64_t iops_rd_max, | |
1577 | bool has_iops_wr_max, | |
2024c1df BC |
1578 | int64_t iops_wr_max, |
1579 | bool has_iops_size, | |
1580 | int64_t iops_size, Error **errp) | |
727f005e | 1581 | { |
cc0681c4 | 1582 | ThrottleConfig cfg; |
727f005e ZYW |
1583 | BlockDriverState *bs; |
1584 | ||
80047da5 | 1585 | bs = bdrv_find(device); |
727f005e | 1586 | if (!bs) { |
80047da5 LC |
1587 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1588 | return; | |
727f005e ZYW |
1589 | } |
1590 | ||
cc0681c4 BC |
1591 | memset(&cfg, 0, sizeof(cfg)); |
1592 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1593 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1594 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1595 | ||
1596 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1597 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1598 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1599 | ||
3e9fab69 BC |
1600 | if (has_bps_max) { |
1601 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1602 | } | |
1603 | if (has_bps_rd_max) { | |
1604 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1605 | } | |
1606 | if (has_bps_wr_max) { | |
1607 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1608 | } | |
1609 | if (has_iops_max) { | |
1610 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1611 | } | |
1612 | if (has_iops_rd_max) { | |
1613 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1614 | } | |
1615 | if (has_iops_wr_max) { | |
1616 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1617 | } | |
727f005e | 1618 | |
2024c1df BC |
1619 | if (has_iops_size) { |
1620 | cfg.op_size = iops_size; | |
1621 | } | |
cc0681c4 BC |
1622 | |
1623 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1624 | return; |
727f005e ZYW |
1625 | } |
1626 | ||
cc0681c4 | 1627 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1628 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1629 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1630 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1631 | } |
1632 | ||
1633 | if (bs->io_limits_enabled) { | |
1634 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1635 | } |
727f005e ZYW |
1636 | } |
1637 | ||
9063f814 RH |
1638 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1639 | { | |
1640 | const char *id = qdict_get_str(qdict, "id"); | |
1641 | BlockDriverState *bs; | |
9063f814 RH |
1642 | |
1643 | bs = bdrv_find(id); | |
1644 | if (!bs) { | |
1645 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1646 | return -1; | |
1647 | } | |
8591675f MT |
1648 | if (bdrv_in_use(bs)) { |
1649 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1650 | return -1; | |
1651 | } | |
9063f814 RH |
1652 | |
1653 | /* quiesce block driver; prevent further io */ | |
922453bc | 1654 | bdrv_drain_all(); |
9063f814 RH |
1655 | bdrv_flush(bs); |
1656 | bdrv_close(bs); | |
1657 | ||
fa879d62 | 1658 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1659 | * then we need to make the drive anonymous until the device |
1660 | * can be removed. If this is a drive with no device backing | |
1661 | * then we can just get rid of the block driver state right here. | |
1662 | */ | |
fa879d62 | 1663 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1664 | bdrv_make_anon(bs); |
293c51a6 SH |
1665 | |
1666 | /* Further I/O must not pause the guest */ | |
1667 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1668 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 RH |
1669 | } else { |
1670 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1671 | } |
1672 | ||
9063f814 RH |
1673 | return 0; |
1674 | } | |
6d4a2b3a | 1675 | |
5e7caacb | 1676 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1677 | { |
6d4a2b3a | 1678 | BlockDriverState *bs; |
8732901e | 1679 | int ret; |
6d4a2b3a CH |
1680 | |
1681 | bs = bdrv_find(device); | |
1682 | if (!bs) { | |
5e7caacb LC |
1683 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1684 | return; | |
6d4a2b3a CH |
1685 | } |
1686 | ||
1687 | if (size < 0) { | |
939a1cc3 | 1688 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1689 | return; |
6d4a2b3a CH |
1690 | } |
1691 | ||
92b7a08d PL |
1692 | /* complete all in-flight operations before resizing the device */ |
1693 | bdrv_drain_all(); | |
1694 | ||
8732901e KW |
1695 | ret = bdrv_truncate(bs, size); |
1696 | switch (ret) { | |
939a1cc3 SH |
1697 | case 0: |
1698 | break; | |
1699 | case -ENOMEDIUM: | |
1700 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1701 | break; | |
1702 | case -ENOTSUP: | |
1703 | error_set(errp, QERR_UNSUPPORTED); | |
1704 | break; | |
1705 | case -EACCES: | |
1706 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1707 | break; | |
1708 | case -EBUSY: | |
1709 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1710 | break; | |
1711 | default: | |
8732901e | 1712 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1713 | break; |
6d4a2b3a | 1714 | } |
6d4a2b3a | 1715 | } |
12bd451f | 1716 | |
9abf2dba | 1717 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1718 | { |
1719 | BlockDriverState *bs = opaque; | |
1720 | QObject *obj; | |
1721 | ||
9abf2dba | 1722 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1723 | |
1724 | assert(bs->job); | |
1725 | obj = qobject_from_block_job(bs->job); | |
1726 | if (ret < 0) { | |
1727 | QDict *dict = qobject_to_qdict(obj); | |
1728 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1729 | } | |
1730 | ||
370521a1 SH |
1731 | if (block_job_is_cancelled(bs->job)) { |
1732 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1733 | } else { | |
1734 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1735 | } | |
12bd451f | 1736 | qobject_decref(obj); |
aa398a5c | 1737 | |
fa510ebf | 1738 | bdrv_put_ref_bh_schedule(bs); |
12bd451f SH |
1739 | } |
1740 | ||
1741 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1742 | const char *base, bool has_speed, int64_t speed, |
1743 | bool has_on_error, BlockdevOnError on_error, | |
1744 | Error **errp) | |
12bd451f SH |
1745 | { |
1746 | BlockDriverState *bs; | |
c8c3080f | 1747 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1748 | Error *local_err = NULL; |
12bd451f | 1749 | |
1d809098 PB |
1750 | if (!has_on_error) { |
1751 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1752 | } | |
1753 | ||
12bd451f SH |
1754 | bs = bdrv_find(device); |
1755 | if (!bs) { | |
1756 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1757 | return; | |
1758 | } | |
1759 | ||
12bd451f | 1760 | if (base) { |
c8c3080f MT |
1761 | base_bs = bdrv_find_backing_image(bs, base); |
1762 | if (base_bs == NULL) { | |
1763 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1764 | return; | |
1765 | } | |
12bd451f SH |
1766 | } |
1767 | ||
c83c66c3 | 1768 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1769 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1770 | if (error_is_set(&local_err)) { |
1771 | error_propagate(errp, local_err); | |
1772 | return; | |
12bd451f SH |
1773 | } |
1774 | ||
1775 | trace_qmp_block_stream(bs, bs->job); | |
1776 | } | |
2d47c6e9 | 1777 | |
ed61fc10 JC |
1778 | void qmp_block_commit(const char *device, |
1779 | bool has_base, const char *base, const char *top, | |
1780 | bool has_speed, int64_t speed, | |
1781 | Error **errp) | |
1782 | { | |
1783 | BlockDriverState *bs; | |
1784 | BlockDriverState *base_bs, *top_bs; | |
1785 | Error *local_err = NULL; | |
1786 | /* This will be part of the QMP command, if/when the | |
1787 | * BlockdevOnError change for blkmirror makes it in | |
1788 | */ | |
92aa5c6d | 1789 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1790 | |
1791 | /* drain all i/o before commits */ | |
1792 | bdrv_drain_all(); | |
1793 | ||
1794 | bs = bdrv_find(device); | |
1795 | if (!bs) { | |
1796 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1797 | return; | |
1798 | } | |
ed61fc10 JC |
1799 | |
1800 | /* default top_bs is the active layer */ | |
1801 | top_bs = bs; | |
1802 | ||
1803 | if (top) { | |
1804 | if (strcmp(bs->filename, top) != 0) { | |
1805 | top_bs = bdrv_find_backing_image(bs, top); | |
1806 | } | |
1807 | } | |
1808 | ||
1809 | if (top_bs == NULL) { | |
1810 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1811 | return; | |
1812 | } | |
1813 | ||
d5208c45 JC |
1814 | if (has_base && base) { |
1815 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1816 | } else { | |
1817 | base_bs = bdrv_find_base(top_bs); | |
1818 | } | |
1819 | ||
1820 | if (base_bs == NULL) { | |
1821 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1822 | return; | |
1823 | } | |
1824 | ||
ed61fc10 JC |
1825 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1826 | &local_err); | |
1827 | if (local_err != NULL) { | |
1828 | error_propagate(errp, local_err); | |
1829 | return; | |
1830 | } | |
ed61fc10 JC |
1831 | } |
1832 | ||
99a9addf SH |
1833 | void qmp_drive_backup(const char *device, const char *target, |
1834 | bool has_format, const char *format, | |
b53169ea | 1835 | enum MirrorSyncMode sync, |
99a9addf SH |
1836 | bool has_mode, enum NewImageMode mode, |
1837 | bool has_speed, int64_t speed, | |
1838 | bool has_on_source_error, BlockdevOnError on_source_error, | |
1839 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1840 | Error **errp) | |
1841 | { | |
1842 | BlockDriverState *bs; | |
1843 | BlockDriverState *target_bs; | |
fc5d3f84 | 1844 | BlockDriverState *source = NULL; |
99a9addf SH |
1845 | BlockDriver *drv = NULL; |
1846 | Error *local_err = NULL; | |
1847 | int flags; | |
1848 | int64_t size; | |
1849 | int ret; | |
1850 | ||
1851 | if (!has_speed) { | |
1852 | speed = 0; | |
1853 | } | |
1854 | if (!has_on_source_error) { | |
1855 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1856 | } | |
1857 | if (!has_on_target_error) { | |
1858 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1859 | } | |
1860 | if (!has_mode) { | |
1861 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1862 | } | |
1863 | ||
1864 | bs = bdrv_find(device); | |
1865 | if (!bs) { | |
1866 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1867 | return; | |
1868 | } | |
1869 | ||
1870 | if (!bdrv_is_inserted(bs)) { | |
1871 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1872 | return; | |
1873 | } | |
1874 | ||
1875 | if (!has_format) { | |
1876 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1877 | } | |
1878 | if (format) { | |
1879 | drv = bdrv_find_format(format); | |
1880 | if (!drv) { | |
1881 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1882 | return; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | if (bdrv_in_use(bs)) { | |
1887 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1888 | return; | |
1889 | } | |
1890 | ||
1891 | flags = bs->open_flags | BDRV_O_RDWR; | |
1892 | ||
fc5d3f84 IM |
1893 | /* See if we have a backing HD we can use to create our new image |
1894 | * on top of. */ | |
1895 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
1896 | source = bs->backing_hd; | |
1897 | if (!source) { | |
1898 | sync = MIRROR_SYNC_MODE_FULL; | |
1899 | } | |
1900 | } | |
1901 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
1902 | source = bs; | |
1903 | } | |
1904 | ||
99a9addf SH |
1905 | size = bdrv_getlength(bs); |
1906 | if (size < 0) { | |
1907 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1908 | return; | |
1909 | } | |
1910 | ||
1911 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1912 | assert(format && drv); | |
fc5d3f84 IM |
1913 | if (source) { |
1914 | bdrv_img_create(target, format, source->filename, | |
1915 | source->drv->format_name, NULL, | |
1916 | size, flags, &local_err, false); | |
1917 | } else { | |
1918 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
1919 | size, flags, &local_err, false); | |
1920 | } | |
99a9addf SH |
1921 | } |
1922 | ||
1923 | if (error_is_set(&local_err)) { | |
1924 | error_propagate(errp, local_err); | |
1925 | return; | |
1926 | } | |
1927 | ||
1928 | target_bs = bdrv_new(""); | |
34b5d2c6 | 1929 | ret = bdrv_open(target_bs, target, NULL, flags, drv, &local_err); |
99a9addf | 1930 | if (ret < 0) { |
4f6fd349 | 1931 | bdrv_unref(target_bs); |
34b5d2c6 | 1932 | error_propagate(errp, local_err); |
99a9addf SH |
1933 | return; |
1934 | } | |
1935 | ||
fc5d3f84 | 1936 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
1937 | block_job_cb, bs, &local_err); |
1938 | if (local_err != NULL) { | |
4f6fd349 | 1939 | bdrv_unref(target_bs); |
99a9addf SH |
1940 | error_propagate(errp, local_err); |
1941 | return; | |
1942 | } | |
99a9addf SH |
1943 | } |
1944 | ||
08e4ed6c PB |
1945 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1946 | ||
d9b902db PB |
1947 | void qmp_drive_mirror(const char *device, const char *target, |
1948 | bool has_format, const char *format, | |
1949 | enum MirrorSyncMode sync, | |
1950 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1951 | bool has_speed, int64_t speed, |
eee13dfe | 1952 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1953 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1954 | bool has_on_source_error, BlockdevOnError on_source_error, |
1955 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1956 | Error **errp) | |
d9b902db | 1957 | { |
d9b902db PB |
1958 | BlockDriverState *bs; |
1959 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
1960 | BlockDriver *drv = NULL; |
1961 | Error *local_err = NULL; | |
1962 | int flags; | |
ac3c5d83 | 1963 | int64_t size; |
d9b902db PB |
1964 | int ret; |
1965 | ||
1966 | if (!has_speed) { | |
1967 | speed = 0; | |
1968 | } | |
b952b558 PB |
1969 | if (!has_on_source_error) { |
1970 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1971 | } | |
1972 | if (!has_on_target_error) { | |
1973 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1974 | } | |
d9b902db PB |
1975 | if (!has_mode) { |
1976 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1977 | } | |
eee13dfe PB |
1978 | if (!has_granularity) { |
1979 | granularity = 0; | |
1980 | } | |
08e4ed6c PB |
1981 | if (!has_buf_size) { |
1982 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1983 | } | |
1984 | ||
eee13dfe PB |
1985 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1986 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1987 | return; | |
1988 | } | |
1989 | if (granularity & (granularity - 1)) { | |
1990 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1991 | return; | |
1992 | } | |
d9b902db PB |
1993 | |
1994 | bs = bdrv_find(device); | |
1995 | if (!bs) { | |
1996 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1997 | return; | |
1998 | } | |
1999 | ||
2000 | if (!bdrv_is_inserted(bs)) { | |
2001 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2002 | return; | |
2003 | } | |
2004 | ||
2005 | if (!has_format) { | |
2006 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2007 | } | |
2008 | if (format) { | |
2009 | drv = bdrv_find_format(format); | |
2010 | if (!drv) { | |
2011 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
2012 | return; | |
2013 | } | |
2014 | } | |
2015 | ||
2016 | if (bdrv_in_use(bs)) { | |
2017 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
2018 | return; | |
2019 | } | |
2020 | ||
2021 | flags = bs->open_flags | BDRV_O_RDWR; | |
2022 | source = bs->backing_hd; | |
2023 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
2024 | sync = MIRROR_SYNC_MODE_FULL; | |
2025 | } | |
117e0c82 HR |
2026 | if (sync == MIRROR_SYNC_MODE_NONE) { |
2027 | source = bs; | |
2028 | } | |
d9b902db | 2029 | |
ac3c5d83 SH |
2030 | size = bdrv_getlength(bs); |
2031 | if (size < 0) { | |
2032 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2033 | return; | |
2034 | } | |
2035 | ||
14526864 HR |
2036 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
2037 | && mode != NEW_IMAGE_MODE_EXISTING) | |
2038 | { | |
d9b902db PB |
2039 | /* create new image w/o backing file */ |
2040 | assert(format && drv); | |
cf8f2426 | 2041 | bdrv_img_create(target, format, |
f382d43a | 2042 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
2043 | } else { |
2044 | switch (mode) { | |
2045 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
2046 | break; |
2047 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
2048 | /* create new image with backing file */ | |
cf8f2426 LC |
2049 | bdrv_img_create(target, format, |
2050 | source->filename, | |
2051 | source->drv->format_name, | |
f382d43a | 2052 | NULL, size, flags, &local_err, false); |
d9b902db PB |
2053 | break; |
2054 | default: | |
2055 | abort(); | |
2056 | } | |
2057 | } | |
2058 | ||
cf8f2426 LC |
2059 | if (error_is_set(&local_err)) { |
2060 | error_propagate(errp, local_err); | |
d9b902db PB |
2061 | return; |
2062 | } | |
2063 | ||
b812f671 PB |
2064 | /* Mirroring takes care of copy-on-write using the source's backing |
2065 | * file. | |
2066 | */ | |
d9b902db | 2067 | target_bs = bdrv_new(""); |
34b5d2c6 HR |
2068 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv, |
2069 | &local_err); | |
d9b902db | 2070 | if (ret < 0) { |
4f6fd349 | 2071 | bdrv_unref(target_bs); |
34b5d2c6 | 2072 | error_propagate(errp, local_err); |
d9b902db PB |
2073 | return; |
2074 | } | |
2075 | ||
08e4ed6c | 2076 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 2077 | on_source_error, on_target_error, |
b952b558 | 2078 | block_job_cb, bs, &local_err); |
d9b902db | 2079 | if (local_err != NULL) { |
4f6fd349 | 2080 | bdrv_unref(target_bs); |
d9b902db PB |
2081 | error_propagate(errp, local_err); |
2082 | return; | |
2083 | } | |
d9b902db PB |
2084 | } |
2085 | ||
2d47c6e9 SH |
2086 | static BlockJob *find_block_job(const char *device) |
2087 | { | |
2088 | BlockDriverState *bs; | |
2089 | ||
2090 | bs = bdrv_find(device); | |
2091 | if (!bs || !bs->job) { | |
2092 | return NULL; | |
2093 | } | |
2094 | return bs->job; | |
2095 | } | |
2096 | ||
882ec7ce | 2097 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
2098 | { |
2099 | BlockJob *job = find_block_job(device); | |
2100 | ||
2101 | if (!job) { | |
7ef15070 | 2102 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
2103 | return; |
2104 | } | |
2105 | ||
882ec7ce | 2106 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 2107 | } |
370521a1 | 2108 | |
6e37fb81 PB |
2109 | void qmp_block_job_cancel(const char *device, |
2110 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
2111 | { |
2112 | BlockJob *job = find_block_job(device); | |
2113 | ||
6e37fb81 PB |
2114 | if (!has_force) { |
2115 | force = false; | |
2116 | } | |
2117 | ||
370521a1 | 2118 | if (!job) { |
7ef15070 | 2119 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
2120 | return; |
2121 | } | |
6e37fb81 | 2122 | if (job->paused && !force) { |
8acc72a4 PB |
2123 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
2124 | return; | |
2125 | } | |
370521a1 SH |
2126 | |
2127 | trace_qmp_block_job_cancel(job); | |
2128 | block_job_cancel(job); | |
2129 | } | |
fb5458cd | 2130 | |
6e37fb81 PB |
2131 | void qmp_block_job_pause(const char *device, Error **errp) |
2132 | { | |
2133 | BlockJob *job = find_block_job(device); | |
2134 | ||
2135 | if (!job) { | |
2136 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2137 | return; | |
2138 | } | |
2139 | ||
2140 | trace_qmp_block_job_pause(job); | |
2141 | block_job_pause(job); | |
2142 | } | |
2143 | ||
2144 | void qmp_block_job_resume(const char *device, Error **errp) | |
2145 | { | |
2146 | BlockJob *job = find_block_job(device); | |
2147 | ||
2148 | if (!job) { | |
2149 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2150 | return; | |
2151 | } | |
2152 | ||
2153 | trace_qmp_block_job_resume(job); | |
2154 | block_job_resume(job); | |
2155 | } | |
2156 | ||
aeae883b PB |
2157 | void qmp_block_job_complete(const char *device, Error **errp) |
2158 | { | |
2159 | BlockJob *job = find_block_job(device); | |
2160 | ||
2161 | if (!job) { | |
2162 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2163 | return; | |
2164 | } | |
2165 | ||
2166 | trace_qmp_block_job_complete(job); | |
2167 | block_job_complete(job, errp); | |
2168 | } | |
2169 | ||
d26c9a15 KW |
2170 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
2171 | { | |
2172 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
2173 | QObject *obj; | |
2174 | QDict *qdict; | |
d26c9a15 KW |
2175 | Error *local_err = NULL; |
2176 | ||
2177 | /* Require an ID in the top level */ | |
2178 | if (!options->has_id) { | |
2179 | error_setg(errp, "Block device needs an ID"); | |
2180 | goto fail; | |
2181 | } | |
2182 | ||
2183 | /* TODO Sort it out in raw-posix and drive_init: Reject aio=native with | |
2184 | * cache.direct=false instead of silently switching to aio=threads, except | |
2185 | * if called from drive_init. | |
2186 | * | |
2187 | * For now, simply forbidding the combination for all drivers will do. */ | |
2188 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
2189 | bool direct = options->cache->has_direct && options->cache->direct; | |
2190 | if (!options->has_cache && !direct) { | |
2191 | error_setg(errp, "aio=native requires cache.direct=true"); | |
2192 | goto fail; | |
2193 | } | |
2194 | } | |
2195 | ||
2196 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), | |
2197 | &options, NULL, &local_err); | |
2198 | if (error_is_set(&local_err)) { | |
2199 | error_propagate(errp, local_err); | |
2200 | goto fail; | |
2201 | } | |
2202 | ||
2203 | obj = qmp_output_get_qobject(ov); | |
2204 | qdict = qobject_to_qdict(obj); | |
2205 | ||
2206 | qdict_flatten(qdict); | |
2207 | ||
b681072d KW |
2208 | blockdev_init(qdict, IF_NONE, &local_err); |
2209 | if (error_is_set(&local_err)) { | |
2210 | error_propagate(errp, local_err); | |
d26c9a15 KW |
2211 | goto fail; |
2212 | } | |
2213 | ||
2214 | fail: | |
2215 | qmp_output_visitor_cleanup(ov); | |
2216 | } | |
2217 | ||
fb5458cd SH |
2218 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
2219 | { | |
2220 | BlockJobInfoList **prev = opaque; | |
2221 | BlockJob *job = bs->job; | |
2222 | ||
2223 | if (job) { | |
30e628b7 PB |
2224 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
2225 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
2226 | (*prev)->next = elem; |
2227 | *prev = elem; | |
2228 | } | |
2229 | } | |
2230 | ||
2231 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
2232 | { | |
2233 | /* Dummy is a fake list element for holding the head pointer */ | |
2234 | BlockJobInfoList dummy = {}; | |
2235 | BlockJobInfoList *prev = &dummy; | |
2236 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
2237 | return dummy.next; | |
2238 | } | |
4d454574 | 2239 | |
0006383e | 2240 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 2241 | .name = "drive", |
0006383e | 2242 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
2243 | .desc = { |
2244 | { | |
4d454574 PB |
2245 | .name = "snapshot", |
2246 | .type = QEMU_OPT_BOOL, | |
2247 | .help = "enable/disable snapshot mode", | |
2248 | },{ | |
2249 | .name = "file", | |
2250 | .type = QEMU_OPT_STRING, | |
2251 | .help = "disk image", | |
a9384aff PB |
2252 | },{ |
2253 | .name = "discard", | |
2254 | .type = QEMU_OPT_STRING, | |
2255 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 2256 | },{ |
29c4e2b5 KW |
2257 | .name = "cache.writeback", |
2258 | .type = QEMU_OPT_BOOL, | |
2259 | .help = "enables writeback mode for any caches", | |
2260 | },{ | |
2261 | .name = "cache.direct", | |
2262 | .type = QEMU_OPT_BOOL, | |
2263 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
2264 | },{ | |
2265 | .name = "cache.no-flush", | |
2266 | .type = QEMU_OPT_BOOL, | |
2267 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
2268 | },{ |
2269 | .name = "aio", | |
2270 | .type = QEMU_OPT_STRING, | |
2271 | .help = "host AIO implementation (threads, native)", | |
2272 | },{ | |
2273 | .name = "format", | |
2274 | .type = QEMU_OPT_STRING, | |
2275 | .help = "disk format (raw, qcow2, ...)", | |
2276 | },{ | |
2277 | .name = "serial", | |
2278 | .type = QEMU_OPT_STRING, | |
2279 | .help = "disk serial number", | |
2280 | },{ | |
2281 | .name = "rerror", | |
2282 | .type = QEMU_OPT_STRING, | |
2283 | .help = "read error action", | |
2284 | },{ | |
2285 | .name = "werror", | |
2286 | .type = QEMU_OPT_STRING, | |
2287 | .help = "write error action", | |
4d454574 | 2288 | },{ |
0f227a94 | 2289 | .name = "read-only", |
4d454574 PB |
2290 | .type = QEMU_OPT_BOOL, |
2291 | .help = "open drive file as read-only", | |
2292 | },{ | |
57975222 | 2293 | .name = "throttling.iops-total", |
4d454574 PB |
2294 | .type = QEMU_OPT_NUMBER, |
2295 | .help = "limit total I/O operations per second", | |
2296 | },{ | |
57975222 | 2297 | .name = "throttling.iops-read", |
4d454574 PB |
2298 | .type = QEMU_OPT_NUMBER, |
2299 | .help = "limit read operations per second", | |
2300 | },{ | |
57975222 | 2301 | .name = "throttling.iops-write", |
4d454574 PB |
2302 | .type = QEMU_OPT_NUMBER, |
2303 | .help = "limit write operations per second", | |
2304 | },{ | |
57975222 | 2305 | .name = "throttling.bps-total", |
4d454574 PB |
2306 | .type = QEMU_OPT_NUMBER, |
2307 | .help = "limit total bytes per second", | |
2308 | },{ | |
57975222 | 2309 | .name = "throttling.bps-read", |
4d454574 PB |
2310 | .type = QEMU_OPT_NUMBER, |
2311 | .help = "limit read bytes per second", | |
2312 | },{ | |
57975222 | 2313 | .name = "throttling.bps-write", |
4d454574 PB |
2314 | .type = QEMU_OPT_NUMBER, |
2315 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2316 | },{ |
2317 | .name = "throttling.iops-total-max", | |
2318 | .type = QEMU_OPT_NUMBER, | |
2319 | .help = "I/O operations burst", | |
2320 | },{ | |
2321 | .name = "throttling.iops-read-max", | |
2322 | .type = QEMU_OPT_NUMBER, | |
2323 | .help = "I/O operations read burst", | |
2324 | },{ | |
2325 | .name = "throttling.iops-write-max", | |
2326 | .type = QEMU_OPT_NUMBER, | |
2327 | .help = "I/O operations write burst", | |
2328 | },{ | |
2329 | .name = "throttling.bps-total-max", | |
2330 | .type = QEMU_OPT_NUMBER, | |
2331 | .help = "total bytes burst", | |
2332 | },{ | |
2333 | .name = "throttling.bps-read-max", | |
2334 | .type = QEMU_OPT_NUMBER, | |
2335 | .help = "total bytes read burst", | |
2336 | },{ | |
2337 | .name = "throttling.bps-write-max", | |
2338 | .type = QEMU_OPT_NUMBER, | |
2339 | .help = "total bytes write burst", | |
2024c1df BC |
2340 | },{ |
2341 | .name = "throttling.iops-size", | |
2342 | .type = QEMU_OPT_NUMBER, | |
2343 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2344 | },{ |
2345 | .name = "copy-on-read", | |
2346 | .type = QEMU_OPT_BOOL, | |
2347 | .help = "copy read data from backing file into image file", | |
4d454574 PB |
2348 | }, |
2349 | { /* end of list */ } | |
2350 | }, | |
2351 | }; | |
0006383e KW |
2352 | |
2353 | QemuOptsList qemu_drive_opts = { | |
2354 | .name = "drive", | |
2355 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2356 | .desc = { | |
492fdc6f KW |
2357 | /* |
2358 | * no elements => accept any params | |
2359 | * validation will happen later | |
2360 | */ | |
0006383e KW |
2361 | { /* end of list */ } |
2362 | }, | |
2363 | }; |