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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); |
0006383e | 50 | extern QemuOptsList qemu_common_drive_opts; |
666daa68 | 51 | |
1960966d MA |
52 | static const char *const if_name[IF_COUNT] = { |
53 | [IF_NONE] = "none", | |
54 | [IF_IDE] = "ide", | |
55 | [IF_SCSI] = "scsi", | |
56 | [IF_FLOPPY] = "floppy", | |
57 | [IF_PFLASH] = "pflash", | |
58 | [IF_MTD] = "mtd", | |
59 | [IF_SD] = "sd", | |
60 | [IF_VIRTIO] = "virtio", | |
61 | [IF_XEN] = "xen", | |
62 | }; | |
63 | ||
64 | static const int if_max_devs[IF_COUNT] = { | |
27d6bf40 MA |
65 | /* |
66 | * Do not change these numbers! They govern how drive option | |
67 | * index maps to unit and bus. That mapping is ABI. | |
68 | * | |
69 | * All controllers used to imlement if=T drives need to support | |
70 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
71 | * Otherwise, some index values map to "impossible" bus, unit | |
72 | * values. | |
73 | * | |
74 | * For instance, if you change [IF_SCSI] to 255, -drive | |
75 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
76 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
77 | * the drive can't be set up. Regression. | |
78 | */ | |
79 | [IF_IDE] = 2, | |
80 | [IF_SCSI] = 7, | |
1960966d MA |
81 | }; |
82 | ||
14bafc54 MA |
83 | /* |
84 | * We automatically delete the drive when a device using it gets | |
85 | * unplugged. Questionable feature, but we can't just drop it. | |
86 | * Device models call blockdev_mark_auto_del() to schedule the | |
87 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
88 | * when deletion is actually safe. | |
89 | */ | |
90 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
91 | { | |
92 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
93 | ||
2d246f01 KW |
94 | if (dinfo && !dinfo->enable_auto_del) { |
95 | return; | |
96 | } | |
97 | ||
12bde0ee PB |
98 | if (bs->job) { |
99 | block_job_cancel(bs->job); | |
100 | } | |
0fc0f1fa RH |
101 | if (dinfo) { |
102 | dinfo->auto_del = 1; | |
103 | } | |
14bafc54 MA |
104 | } |
105 | ||
106 | void blockdev_auto_del(BlockDriverState *bs) | |
107 | { | |
108 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
109 | ||
0fc0f1fa | 110 | if (dinfo && dinfo->auto_del) { |
84fb3925 | 111 | drive_put_ref(dinfo); |
14bafc54 MA |
112 | } |
113 | } | |
114 | ||
505a7fb1 MA |
115 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
116 | { | |
117 | int max_devs = if_max_devs[type]; | |
118 | return max_devs ? index / max_devs : 0; | |
119 | } | |
120 | ||
121 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
122 | { | |
123 | int max_devs = if_max_devs[type]; | |
124 | return max_devs ? index % max_devs : index; | |
125 | } | |
126 | ||
2292ddae MA |
127 | QemuOpts *drive_def(const char *optstr) |
128 | { | |
129 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
130 | } | |
131 | ||
132 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 133 | const char *optstr) |
666daa68 | 134 | { |
666daa68 | 135 | QemuOpts *opts; |
2292ddae | 136 | char buf[32]; |
666daa68 | 137 | |
2292ddae | 138 | opts = drive_def(optstr); |
666daa68 MA |
139 | if (!opts) { |
140 | return NULL; | |
141 | } | |
2292ddae MA |
142 | if (type != IF_DEFAULT) { |
143 | qemu_opt_set(opts, "if", if_name[type]); | |
144 | } | |
145 | if (index >= 0) { | |
146 | snprintf(buf, sizeof(buf), "%d", index); | |
147 | qemu_opt_set(opts, "index", buf); | |
148 | } | |
666daa68 MA |
149 | if (file) |
150 | qemu_opt_set(opts, "file", file); | |
151 | return opts; | |
152 | } | |
153 | ||
154 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
155 | { | |
156 | DriveInfo *dinfo; | |
157 | ||
158 | /* seek interface, bus and unit */ | |
159 | ||
160 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
161 | if (dinfo->type == type && | |
162 | dinfo->bus == bus && | |
163 | dinfo->unit == unit) | |
164 | return dinfo; | |
165 | } | |
166 | ||
167 | return NULL; | |
168 | } | |
169 | ||
f1bd51ac MA |
170 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
171 | { | |
172 | return drive_get(type, | |
173 | drive_index_to_bus_id(type, index), | |
174 | drive_index_to_unit_id(type, index)); | |
175 | } | |
176 | ||
666daa68 MA |
177 | int drive_get_max_bus(BlockInterfaceType type) |
178 | { | |
179 | int max_bus; | |
180 | DriveInfo *dinfo; | |
181 | ||
182 | max_bus = -1; | |
183 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
184 | if(dinfo->type == type && | |
185 | dinfo->bus > max_bus) | |
186 | max_bus = dinfo->bus; | |
187 | } | |
188 | return max_bus; | |
189 | } | |
190 | ||
13839974 MA |
191 | /* Get a block device. This should only be used for single-drive devices |
192 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
193 | appropriate bus. */ | |
194 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
195 | { | |
196 | static int next_block_unit[IF_COUNT]; | |
197 | ||
198 | return drive_get(type, 0, next_block_unit[type]++); | |
199 | } | |
200 | ||
e4700e59 | 201 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
202 | { |
203 | DriveInfo *dinfo; | |
204 | ||
205 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
206 | if (dinfo->bdrv == bs) { |
207 | return dinfo; | |
208 | } | |
666daa68 | 209 | } |
e4700e59 | 210 | return NULL; |
666daa68 MA |
211 | } |
212 | ||
666daa68 MA |
213 | static void bdrv_format_print(void *opaque, const char *name) |
214 | { | |
807105a7 | 215 | error_printf(" %s", name); |
666daa68 MA |
216 | } |
217 | ||
84fb3925 | 218 | static void drive_uninit(DriveInfo *dinfo) |
666daa68 | 219 | { |
f298d071 KW |
220 | if (dinfo->opts) { |
221 | qemu_opts_del(dinfo->opts); | |
222 | } | |
223 | ||
4f6fd349 | 224 | bdrv_unref(dinfo->bdrv); |
7267c094 | 225 | g_free(dinfo->id); |
666daa68 | 226 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 227 | g_free(dinfo->serial); |
7267c094 | 228 | g_free(dinfo); |
666daa68 MA |
229 | } |
230 | ||
84fb3925 MT |
231 | void drive_put_ref(DriveInfo *dinfo) |
232 | { | |
233 | assert(dinfo->refcount); | |
234 | if (--dinfo->refcount == 0) { | |
235 | drive_uninit(dinfo); | |
236 | } | |
237 | } | |
238 | ||
239 | void drive_get_ref(DriveInfo *dinfo) | |
240 | { | |
241 | dinfo->refcount++; | |
242 | } | |
243 | ||
aa398a5c SH |
244 | typedef struct { |
245 | QEMUBH *bh; | |
fa510ebf FZ |
246 | BlockDriverState *bs; |
247 | } BDRVPutRefBH; | |
aa398a5c | 248 | |
fa510ebf | 249 | static void bdrv_put_ref_bh(void *opaque) |
aa398a5c | 250 | { |
fa510ebf | 251 | BDRVPutRefBH *s = opaque; |
aa398a5c | 252 | |
fa510ebf | 253 | bdrv_unref(s->bs); |
aa398a5c SH |
254 | qemu_bh_delete(s->bh); |
255 | g_free(s); | |
256 | } | |
257 | ||
258 | /* | |
fa510ebf | 259 | * Release a BDS reference in a BH |
aa398a5c | 260 | * |
fa510ebf FZ |
261 | * It is not safe to use bdrv_unref() from a callback function when the callers |
262 | * still need the BlockDriverState. In such cases we schedule a BH to release | |
263 | * the reference. | |
aa398a5c | 264 | */ |
fa510ebf | 265 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
aa398a5c | 266 | { |
fa510ebf | 267 | BDRVPutRefBH *s; |
aa398a5c | 268 | |
fa510ebf FZ |
269 | s = g_new(BDRVPutRefBH, 1); |
270 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); | |
271 | s->bs = bs; | |
aa398a5c SH |
272 | qemu_bh_schedule(s->bh); |
273 | } | |
274 | ||
b681072d | 275 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
276 | { |
277 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 278 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 279 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 280 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 281 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 282 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 283 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 284 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 285 | } else { |
b681072d KW |
286 | error_setg(errp, "'%s' invalid %s error action", |
287 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
288 | return -1; |
289 | } | |
290 | } | |
291 | ||
cc0681c4 | 292 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 293 | { |
cc0681c4 BC |
294 | if (throttle_conflicting(cfg)) { |
295 | error_setg(errp, "bps/iops/max total values and read/write values" | |
296 | " cannot be used at the same time"); | |
0563e191 ZYW |
297 | return false; |
298 | } | |
299 | ||
cc0681c4 BC |
300 | if (!throttle_is_valid(cfg)) { |
301 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
302 | return false; |
303 | } | |
304 | ||
0563e191 ZYW |
305 | return true; |
306 | } | |
307 | ||
33cb7dc8 KW |
308 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
309 | ||
f298d071 KW |
310 | /* Takes the ownership of bs_opts */ |
311 | static DriveInfo *blockdev_init(QDict *bs_opts, | |
b681072d KW |
312 | BlockInterfaceType type, |
313 | Error **errp) | |
666daa68 MA |
314 | { |
315 | const char *buf; | |
316 | const char *file = NULL; | |
666daa68 | 317 | const char *serial; |
666daa68 MA |
318 | int ro = 0; |
319 | int bdrv_flags = 0; | |
320 | int on_read_error, on_write_error; | |
666daa68 | 321 | DriveInfo *dinfo; |
cc0681c4 | 322 | ThrottleConfig cfg; |
666daa68 | 323 | int snapshot = 0; |
fb0490f6 | 324 | bool copy_on_read; |
666daa68 | 325 | int ret; |
c546194f | 326 | Error *error = NULL; |
0006383e | 327 | QemuOpts *opts; |
0006383e | 328 | const char *id; |
74fe54f2 | 329 | bool has_driver_specific_opts; |
6db5f5d6 | 330 | BlockDriver *drv = NULL; |
666daa68 | 331 | |
f298d071 KW |
332 | /* Check common options by copying from bs_opts to opts, all other options |
333 | * stay in bs_opts for processing by bdrv_open(). */ | |
334 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e KW |
335 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
336 | if (error_is_set(&error)) { | |
b681072d | 337 | error_propagate(errp, error); |
0006383e KW |
338 | return NULL; |
339 | } | |
340 | ||
0006383e KW |
341 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
342 | if (error_is_set(&error)) { | |
b681072d | 343 | error_propagate(errp, error); |
ec9c10d2 | 344 | goto early_err; |
0006383e KW |
345 | } |
346 | ||
347 | if (id) { | |
348 | qdict_del(bs_opts, "id"); | |
349 | } | |
350 | ||
74fe54f2 KW |
351 | has_driver_specific_opts = !!qdict_size(bs_opts); |
352 | ||
666daa68 | 353 | /* extract parameters */ |
666daa68 | 354 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
0f227a94 | 355 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 356 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
357 | |
358 | file = qemu_opt_get(opts, "file"); | |
359 | serial = qemu_opt_get(opts, "serial"); | |
360 | ||
a9384aff PB |
361 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
362 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
b681072d | 363 | error_setg(errp, "invalid discard option"); |
ec9c10d2 | 364 | goto early_err; |
a9384aff PB |
365 | } |
366 | } | |
367 | ||
29c4e2b5 KW |
368 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
369 | bdrv_flags |= BDRV_O_CACHE_WB; | |
370 | } | |
371 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
372 | bdrv_flags |= BDRV_O_NOCACHE; | |
373 | } | |
1df6fa4b | 374 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
29c4e2b5 | 375 | bdrv_flags |= BDRV_O_NO_FLUSH; |
666daa68 MA |
376 | } |
377 | ||
378 | #ifdef CONFIG_LINUX_AIO | |
379 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
380 | if (!strcmp(buf, "native")) { | |
381 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
382 | } else if (!strcmp(buf, "threads")) { | |
383 | /* this is the default */ | |
384 | } else { | |
b681072d | 385 | error_setg(errp, "invalid aio option"); |
ec9c10d2 | 386 | goto early_err; |
666daa68 MA |
387 | } |
388 | } | |
389 | #endif | |
390 | ||
391 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
392 | if (is_help_option(buf)) { |
393 | error_printf("Supported formats:"); | |
394 | bdrv_iterate_format(bdrv_format_print, NULL); | |
395 | error_printf("\n"); | |
ec9c10d2 | 396 | goto early_err; |
666daa68 | 397 | } |
74fe54f2 | 398 | |
8f94a6e4 | 399 | drv = bdrv_find_format(buf); |
6db5f5d6 | 400 | if (!drv) { |
b681072d | 401 | error_setg(errp, "'%s' invalid format", buf); |
ec9c10d2 | 402 | goto early_err; |
6db5f5d6 | 403 | } |
666daa68 MA |
404 | } |
405 | ||
0563e191 | 406 | /* disk I/O throttling */ |
cc0681c4 BC |
407 | memset(&cfg, 0, sizeof(cfg)); |
408 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 409 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 410 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 411 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 412 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 413 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 414 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 415 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 416 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 417 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 418 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 419 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 420 | |
3e9fab69 BC |
421 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
422 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
423 | cfg.buckets[THROTTLE_BPS_READ].max = | |
424 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
425 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
426 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
427 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
428 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
429 | cfg.buckets[THROTTLE_OPS_READ].max = | |
430 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
431 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
432 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 433 | |
2024c1df | 434 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
435 | |
436 | if (!check_throttle_config(&cfg, &error)) { | |
b681072d | 437 | error_propagate(errp, error); |
ec9c10d2 | 438 | goto early_err; |
0563e191 ZYW |
439 | } |
440 | ||
92aa5c6d | 441 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
442 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
443 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
b681072d | 444 | error_setg(errp, "werror is not supported by this bus type"); |
ec9c10d2 | 445 | goto early_err; |
666daa68 MA |
446 | } |
447 | ||
b681072d KW |
448 | on_write_error = parse_block_error_action(buf, 0, &error); |
449 | if (error_is_set(&error)) { | |
450 | error_propagate(errp, error); | |
ec9c10d2 | 451 | goto early_err; |
666daa68 MA |
452 | } |
453 | } | |
454 | ||
92aa5c6d | 455 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 456 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 457 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 458 | error_report("rerror is not supported by this bus type"); |
ec9c10d2 | 459 | goto early_err; |
666daa68 MA |
460 | } |
461 | ||
b681072d KW |
462 | on_read_error = parse_block_error_action(buf, 1, &error); |
463 | if (error_is_set(&error)) { | |
464 | error_propagate(errp, error); | |
ec9c10d2 | 465 | goto early_err; |
666daa68 MA |
466 | } |
467 | } | |
468 | ||
326642bc KW |
469 | /* init */ |
470 | dinfo = g_malloc0(sizeof(*dinfo)); | |
471 | dinfo->id = g_strdup(qemu_opts_id(opts)); | |
666daa68 | 472 | dinfo->bdrv = bdrv_new(dinfo->id); |
80dd1aae KS |
473 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
474 | dinfo->bdrv->read_only = ro; | |
666daa68 | 475 | dinfo->type = type; |
84fb3925 | 476 | dinfo->refcount = 1; |
bb44619b KW |
477 | if (serial != NULL) { |
478 | dinfo->serial = g_strdup(serial); | |
479 | } | |
666daa68 MA |
480 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
481 | ||
abd7f68d MA |
482 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
483 | ||
0563e191 | 484 | /* disk I/O throttling */ |
cc0681c4 BC |
485 | if (throttle_enabled(&cfg)) { |
486 | bdrv_io_limits_enable(dinfo->bdrv); | |
487 | bdrv_set_io_limits(dinfo->bdrv, &cfg); | |
488 | } | |
0563e191 | 489 | |
dd5b0d71 | 490 | if (!file || !*file) { |
74fe54f2 | 491 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
492 | file = NULL; |
493 | } else { | |
ec9c10d2 SH |
494 | QDECREF(bs_opts); |
495 | qemu_opts_del(opts); | |
c2ad1b0c KW |
496 | return dinfo; |
497 | } | |
666daa68 MA |
498 | } |
499 | if (snapshot) { | |
500 | /* always use cache=unsafe with snapshot */ | |
501 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
502 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
503 | } | |
504 | ||
fb0490f6 SH |
505 | if (copy_on_read) { |
506 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
507 | } | |
508 | ||
ed9d4205 BC |
509 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
510 | bdrv_flags |= BDRV_O_INCOMING; | |
511 | } | |
512 | ||
666daa68 MA |
513 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; |
514 | ||
74fe54f2 | 515 | QINCREF(bs_opts); |
34b5d2c6 | 516 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv, &error); |
0006383e | 517 | |
666daa68 | 518 | if (ret < 0) { |
b681072d KW |
519 | error_setg(errp, "could not open disk image %s: %s", |
520 | file ?: dinfo->id, error_get_pretty(error)); | |
521 | error_free(error); | |
a9ae2bff | 522 | goto err; |
666daa68 MA |
523 | } |
524 | ||
525 | if (bdrv_key_required(dinfo->bdrv)) | |
526 | autostart = 0; | |
0006383e | 527 | |
74fe54f2 | 528 | QDECREF(bs_opts); |
0006383e KW |
529 | qemu_opts_del(opts); |
530 | ||
666daa68 | 531 | return dinfo; |
a9ae2bff MA |
532 | |
533 | err: | |
4f6fd349 | 534 | bdrv_unref(dinfo->bdrv); |
7267c094 | 535 | g_free(dinfo->id); |
a9ae2bff | 536 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 537 | g_free(dinfo); |
ec9c10d2 SH |
538 | early_err: |
539 | QDECREF(bs_opts); | |
540 | qemu_opts_del(opts); | |
a9ae2bff | 541 | return NULL; |
666daa68 MA |
542 | } |
543 | ||
57975222 KW |
544 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
545 | { | |
546 | const char *value; | |
547 | ||
548 | value = qemu_opt_get(opts, from); | |
549 | if (value) { | |
550 | qemu_opt_set(opts, to, value); | |
551 | qemu_opt_unset(opts, from); | |
552 | } | |
553 | } | |
554 | ||
33cb7dc8 KW |
555 | QemuOptsList qemu_legacy_drive_opts = { |
556 | .name = "drive", | |
557 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
558 | .desc = { | |
559 | { | |
87a899c5 KW |
560 | .name = "bus", |
561 | .type = QEMU_OPT_NUMBER, | |
562 | .help = "bus number", | |
563 | },{ | |
564 | .name = "unit", | |
565 | .type = QEMU_OPT_NUMBER, | |
566 | .help = "unit number (i.e. lun for scsi)", | |
567 | },{ | |
568 | .name = "index", | |
569 | .type = QEMU_OPT_NUMBER, | |
570 | .help = "index number", | |
571 | },{ | |
33cb7dc8 KW |
572 | .name = "media", |
573 | .type = QEMU_OPT_STRING, | |
574 | .help = "media type (disk, cdrom)", | |
593d464b KW |
575 | },{ |
576 | .name = "if", | |
577 | .type = QEMU_OPT_STRING, | |
578 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
579 | },{ |
580 | .name = "cyls", | |
581 | .type = QEMU_OPT_NUMBER, | |
582 | .help = "number of cylinders (ide disk geometry)", | |
583 | },{ | |
584 | .name = "heads", | |
585 | .type = QEMU_OPT_NUMBER, | |
586 | .help = "number of heads (ide disk geometry)", | |
587 | },{ | |
588 | .name = "secs", | |
589 | .type = QEMU_OPT_NUMBER, | |
590 | .help = "number of sectors (ide disk geometry)", | |
591 | },{ | |
592 | .name = "trans", | |
593 | .type = QEMU_OPT_STRING, | |
594 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
595 | },{ |
596 | .name = "boot", | |
597 | .type = QEMU_OPT_BOOL, | |
598 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
599 | },{ |
600 | .name = "addr", | |
601 | .type = QEMU_OPT_STRING, | |
602 | .help = "pci address (virtio only)", | |
33cb7dc8 | 603 | }, |
0ebd24e0 KW |
604 | |
605 | /* Options that are passed on, but have special semantics with -drive */ | |
606 | { | |
607 | .name = "read-only", | |
608 | .type = QEMU_OPT_BOOL, | |
609 | .help = "open drive file as read-only", | |
610 | },{ | |
611 | .name = "copy-on-read", | |
612 | .type = QEMU_OPT_BOOL, | |
613 | .help = "copy read data from backing file into image file", | |
614 | }, | |
615 | ||
33cb7dc8 KW |
616 | { /* end of list */ } |
617 | }, | |
618 | }; | |
619 | ||
57975222 KW |
620 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
621 | { | |
29c4e2b5 | 622 | const char *value; |
33cb7dc8 | 623 | DriveInfo *dinfo = NULL; |
f298d071 | 624 | QDict *bs_opts; |
33cb7dc8 KW |
625 | QemuOpts *legacy_opts; |
626 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 627 | BlockInterfaceType type; |
b41a7338 | 628 | int cyls, heads, secs, translation; |
87a899c5 | 629 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 630 | const char *devaddr; |
a7fdbcf0 FZ |
631 | bool read_only = false; |
632 | bool copy_on_read; | |
33cb7dc8 | 633 | Error *local_err = NULL; |
29c4e2b5 | 634 | |
57975222 KW |
635 | /* Change legacy command line options into QMP ones */ |
636 | qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); | |
637 | qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); | |
638 | qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); | |
639 | ||
640 | qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); | |
641 | qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); | |
642 | qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); | |
643 | ||
3e9fab69 BC |
644 | qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max"); |
645 | qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max"); | |
646 | qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max"); | |
647 | ||
648 | qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max"); | |
649 | qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max"); | |
650 | qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max"); | |
651 | ||
2024c1df BC |
652 | qemu_opt_rename(all_opts, |
653 | "iops_size", "throttling.iops-size"); | |
654 | ||
0f227a94 KW |
655 | qemu_opt_rename(all_opts, "readonly", "read-only"); |
656 | ||
29c4e2b5 KW |
657 | value = qemu_opt_get(all_opts, "cache"); |
658 | if (value) { | |
659 | int flags = 0; | |
660 | ||
661 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
662 | error_report("invalid cache option"); | |
663 | return NULL; | |
664 | } | |
665 | ||
666 | /* Specific options take precedence */ | |
667 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
668 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
669 | !!(flags & BDRV_O_CACHE_WB)); | |
670 | } | |
671 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
672 | qemu_opt_set_bool(all_opts, "cache.direct", | |
673 | !!(flags & BDRV_O_NOCACHE)); | |
674 | } | |
675 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
676 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
677 | !!(flags & BDRV_O_NO_FLUSH)); | |
678 | } | |
679 | qemu_opt_unset(all_opts, "cache"); | |
680 | } | |
681 | ||
f298d071 KW |
682 | /* Get a QDict for processing the options */ |
683 | bs_opts = qdict_new(); | |
684 | qemu_opts_to_qdict(all_opts, bs_opts); | |
685 | ||
33cb7dc8 KW |
686 | legacy_opts = qemu_opts_create_nofail(&qemu_legacy_drive_opts); |
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; | |
857 | devopts = qemu_opts_create_nofail(qemu_find_opts("device")); | |
858 | if (arch_type == QEMU_ARCH_S390X) { | |
859 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); | |
860 | } else { | |
861 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); | |
862 | } | |
863 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id")); | |
864 | if (devaddr) { | |
865 | qemu_opt_set(devopts, "addr", devaddr); | |
866 | } | |
867 | } | |
868 | ||
2d246f01 | 869 | /* Actual block device init: Functionality shared with blockdev-add */ |
b681072d | 870 | dinfo = blockdev_init(bs_opts, type, &local_err); |
2d246f01 | 871 | if (dinfo == NULL) { |
b681072d KW |
872 | if (error_is_set(&local_err)) { |
873 | qerror_report_err(local_err); | |
874 | error_free(local_err); | |
875 | } | |
2d246f01 | 876 | goto fail; |
b681072d KW |
877 | } else { |
878 | assert(!error_is_set(&local_err)); | |
2d246f01 KW |
879 | } |
880 | ||
881 | /* Set legacy DriveInfo fields */ | |
882 | dinfo->enable_auto_del = true; | |
f298d071 | 883 | dinfo->opts = all_opts; |
2d246f01 | 884 | |
b41a7338 KW |
885 | dinfo->cyls = cyls; |
886 | dinfo->heads = heads; | |
887 | dinfo->secs = secs; | |
888 | dinfo->trans = translation; | |
889 | ||
87a899c5 KW |
890 | dinfo->bus = bus_id; |
891 | dinfo->unit = unit_id; | |
394c7d4d | 892 | dinfo->devaddr = devaddr; |
87a899c5 | 893 | |
e34ef046 KW |
894 | switch(type) { |
895 | case IF_IDE: | |
896 | case IF_SCSI: | |
897 | case IF_XEN: | |
898 | case IF_NONE: | |
899 | dinfo->media_cd = media == MEDIA_CDROM; | |
900 | break; | |
901 | default: | |
902 | break; | |
903 | } | |
904 | ||
2d246f01 | 905 | fail: |
33cb7dc8 | 906 | qemu_opts_del(legacy_opts); |
2d246f01 | 907 | return dinfo; |
57975222 KW |
908 | } |
909 | ||
666daa68 MA |
910 | void do_commit(Monitor *mon, const QDict *qdict) |
911 | { | |
666daa68 | 912 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 913 | BlockDriverState *bs; |
e8877497 | 914 | int ret; |
666daa68 | 915 | |
6ab4b5ab | 916 | if (!strcmp(device, "all")) { |
e8877497 | 917 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
918 | } else { |
919 | bs = bdrv_find(device); | |
ac59eb95 | 920 | if (!bs) { |
58513bde | 921 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 922 | return; |
6ab4b5ab | 923 | } |
2d3735d3 | 924 | ret = bdrv_commit(bs); |
58513bde JC |
925 | } |
926 | if (ret < 0) { | |
927 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
928 | strerror(-ret)); | |
666daa68 MA |
929 | } |
930 | } | |
931 | ||
6cc2a415 PB |
932 | static void blockdev_do_action(int kind, void *data, Error **errp) |
933 | { | |
c8a83e85 KW |
934 | TransactionAction action; |
935 | TransactionActionList list; | |
6cc2a415 PB |
936 | |
937 | action.kind = kind; | |
938 | action.data = data; | |
939 | list.value = &action; | |
940 | list.next = NULL; | |
941 | qmp_transaction(&list, errp); | |
942 | } | |
943 | ||
6106e249 LC |
944 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
945 | bool has_format, const char *format, | |
6cc2a415 | 946 | bool has_mode, enum NewImageMode mode, |
6106e249 | 947 | Error **errp) |
f8882568 | 948 | { |
6cc2a415 PB |
949 | BlockdevSnapshot snapshot = { |
950 | .device = (char *) device, | |
951 | .snapshot_file = (char *) snapshot_file, | |
952 | .has_format = has_format, | |
953 | .format = (char *) format, | |
954 | .has_mode = has_mode, | |
955 | .mode = mode, | |
956 | }; | |
c8a83e85 KW |
957 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
958 | &snapshot, errp); | |
f8882568 JS |
959 | } |
960 | ||
f323bc9e WX |
961 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
962 | const char *name, | |
963 | Error **errp) | |
964 | { | |
965 | BlockdevSnapshotInternal snapshot = { | |
966 | .device = (char *) device, | |
967 | .name = (char *) name | |
968 | }; | |
969 | ||
970 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
971 | &snapshot, errp); | |
972 | } | |
973 | ||
44e3e053 WX |
974 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
975 | bool has_id, | |
976 | const char *id, | |
977 | bool has_name, | |
978 | const char *name, | |
979 | Error **errp) | |
980 | { | |
981 | BlockDriverState *bs = bdrv_find(device); | |
982 | QEMUSnapshotInfo sn; | |
983 | Error *local_err = NULL; | |
984 | SnapshotInfo *info = NULL; | |
985 | int ret; | |
986 | ||
987 | if (!bs) { | |
988 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
989 | return NULL; | |
990 | } | |
991 | ||
992 | if (!has_id) { | |
993 | id = NULL; | |
994 | } | |
995 | ||
996 | if (!has_name) { | |
997 | name = NULL; | |
998 | } | |
999 | ||
1000 | if (!id && !name) { | |
1001 | error_setg(errp, "Name or id must be provided"); | |
1002 | return NULL; | |
1003 | } | |
1004 | ||
1005 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); | |
1006 | if (error_is_set(&local_err)) { | |
1007 | error_propagate(errp, local_err); | |
1008 | return NULL; | |
1009 | } | |
1010 | if (!ret) { | |
1011 | error_setg(errp, | |
1012 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1013 | "device '%s'", | |
1014 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
1015 | return NULL; | |
1016 | } | |
1017 | ||
1018 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
1019 | if (error_is_set(&local_err)) { | |
1020 | error_propagate(errp, local_err); | |
1021 | return NULL; | |
1022 | } | |
1023 | ||
1024 | info = g_malloc0(sizeof(SnapshotInfo)); | |
1025 | info->id = g_strdup(sn.id_str); | |
1026 | info->name = g_strdup(sn.name); | |
1027 | info->date_nsec = sn.date_nsec; | |
1028 | info->date_sec = sn.date_sec; | |
1029 | info->vm_state_size = sn.vm_state_size; | |
1030 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1031 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1032 | ||
1033 | return info; | |
1034 | } | |
8802d1fd JC |
1035 | |
1036 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 1037 | |
ba5d6ab6 | 1038 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
1039 | |
1040 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
1041 | abort() will be called, clean() will always be called if it present. */ | |
1042 | typedef struct BdrvActionOps { | |
1043 | /* Size of state struct, in bytes. */ | |
1044 | size_t instance_size; | |
1045 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 1046 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 1047 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 1048 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 1049 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 1050 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 1051 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 1052 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
1053 | } BdrvActionOps; |
1054 | ||
1055 | /* | |
1056 | * This structure must be arranged as first member in child type, assuming | |
1057 | * that compiler will also arrange it to the same address with parent instance. | |
1058 | * Later it will be used in free(). | |
1059 | */ | |
ba5d6ab6 | 1060 | struct BlkTransactionState { |
c8a83e85 | 1061 | TransactionAction *action; |
ba0c86a3 | 1062 | const BdrvActionOps *ops; |
ba5d6ab6 | 1063 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
1064 | }; |
1065 | ||
bbe86010 WX |
1066 | /* internal snapshot private data */ |
1067 | typedef struct InternalSnapshotState { | |
1068 | BlkTransactionState common; | |
1069 | BlockDriverState *bs; | |
1070 | QEMUSnapshotInfo sn; | |
1071 | } InternalSnapshotState; | |
1072 | ||
1073 | static void internal_snapshot_prepare(BlkTransactionState *common, | |
1074 | Error **errp) | |
1075 | { | |
1076 | const char *device; | |
1077 | const char *name; | |
1078 | BlockDriverState *bs; | |
1079 | QEMUSnapshotInfo old_sn, *sn; | |
1080 | bool ret; | |
1081 | qemu_timeval tv; | |
1082 | BlockdevSnapshotInternal *internal; | |
1083 | InternalSnapshotState *state; | |
1084 | int ret1; | |
1085 | ||
1086 | g_assert(common->action->kind == | |
1087 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); | |
1088 | internal = common->action->blockdev_snapshot_internal_sync; | |
1089 | state = DO_UPCAST(InternalSnapshotState, common, common); | |
1090 | ||
1091 | /* 1. parse input */ | |
1092 | device = internal->device; | |
1093 | name = internal->name; | |
1094 | ||
1095 | /* 2. check for validation */ | |
1096 | bs = bdrv_find(device); | |
1097 | if (!bs) { | |
1098 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1099 | return; | |
1100 | } | |
1101 | ||
1102 | if (!bdrv_is_inserted(bs)) { | |
1103 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1104 | return; | |
1105 | } | |
1106 | ||
1107 | if (bdrv_is_read_only(bs)) { | |
1108 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1109 | return; | |
1110 | } | |
1111 | ||
1112 | if (!bdrv_can_snapshot(bs)) { | |
1113 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, | |
1114 | bs->drv->format_name, device, "internal snapshot"); | |
1115 | return; | |
1116 | } | |
1117 | ||
1118 | if (!strlen(name)) { | |
1119 | error_setg(errp, "Name is empty"); | |
1120 | return; | |
1121 | } | |
1122 | ||
1123 | /* check whether a snapshot with name exist */ | |
1124 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, errp); | |
1125 | if (error_is_set(errp)) { | |
1126 | return; | |
1127 | } else if (ret) { | |
1128 | error_setg(errp, | |
1129 | "Snapshot with name '%s' already exists on device '%s'", | |
1130 | name, device); | |
1131 | return; | |
1132 | } | |
1133 | ||
1134 | /* 3. take the snapshot */ | |
1135 | sn = &state->sn; | |
1136 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1137 | qemu_gettimeofday(&tv); | |
1138 | sn->date_sec = tv.tv_sec; | |
1139 | sn->date_nsec = tv.tv_usec * 1000; | |
1140 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1141 | ||
1142 | ret1 = bdrv_snapshot_create(bs, sn); | |
1143 | if (ret1 < 0) { | |
1144 | error_setg_errno(errp, -ret1, | |
1145 | "Failed to create snapshot '%s' on device '%s'", | |
1146 | name, device); | |
1147 | return; | |
1148 | } | |
1149 | ||
1150 | /* 4. succeed, mark a snapshot is created */ | |
1151 | state->bs = bs; | |
1152 | } | |
1153 | ||
1154 | static void internal_snapshot_abort(BlkTransactionState *common) | |
1155 | { | |
1156 | InternalSnapshotState *state = | |
1157 | DO_UPCAST(InternalSnapshotState, common, common); | |
1158 | BlockDriverState *bs = state->bs; | |
1159 | QEMUSnapshotInfo *sn = &state->sn; | |
1160 | Error *local_error = NULL; | |
1161 | ||
1162 | if (!bs) { | |
1163 | return; | |
1164 | } | |
1165 | ||
1166 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1167 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1168 | "device '%s' in abort: %s", | |
1169 | sn->id_str, | |
1170 | sn->name, | |
1171 | bdrv_get_device_name(bs), | |
1172 | error_get_pretty(local_error)); | |
1173 | error_free(local_error); | |
1174 | } | |
1175 | } | |
1176 | ||
ba0c86a3 | 1177 | /* external snapshot private data */ |
ba5d6ab6 SH |
1178 | typedef struct ExternalSnapshotState { |
1179 | BlkTransactionState common; | |
8802d1fd JC |
1180 | BlockDriverState *old_bs; |
1181 | BlockDriverState *new_bs; | |
ba5d6ab6 | 1182 | } ExternalSnapshotState; |
8802d1fd | 1183 | |
ba5d6ab6 | 1184 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
1185 | Error **errp) |
1186 | { | |
9b9877ee WX |
1187 | BlockDriver *drv; |
1188 | int flags, ret; | |
1189 | Error *local_err = NULL; | |
e2a31e87 WX |
1190 | const char *device; |
1191 | const char *new_image_file; | |
1192 | const char *format = "qcow2"; | |
1193 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
1194 | ExternalSnapshotState *state = |
1195 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1196 | TransactionAction *action = common->action; |
9b9877ee | 1197 | |
e2a31e87 | 1198 | /* get parameters */ |
c8a83e85 | 1199 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 WX |
1200 | |
1201 | device = action->blockdev_snapshot_sync->device; | |
1202 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; | |
1203 | if (action->blockdev_snapshot_sync->has_format) { | |
1204 | format = action->blockdev_snapshot_sync->format; | |
1205 | } | |
1206 | if (action->blockdev_snapshot_sync->has_mode) { | |
1207 | mode = action->blockdev_snapshot_sync->mode; | |
1208 | } | |
1209 | ||
1210 | /* start processing */ | |
9b9877ee WX |
1211 | drv = bdrv_find_format(format); |
1212 | if (!drv) { | |
1213 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1214 | return; | |
1215 | } | |
1216 | ||
ba5d6ab6 SH |
1217 | state->old_bs = bdrv_find(device); |
1218 | if (!state->old_bs) { | |
9b9877ee WX |
1219 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1220 | return; | |
1221 | } | |
1222 | ||
ba5d6ab6 | 1223 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
1224 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1225 | return; | |
1226 | } | |
1227 | ||
ba5d6ab6 | 1228 | if (bdrv_in_use(state->old_bs)) { |
9b9877ee WX |
1229 | error_set(errp, QERR_DEVICE_IN_USE, device); |
1230 | return; | |
1231 | } | |
1232 | ||
ba5d6ab6 SH |
1233 | if (!bdrv_is_read_only(state->old_bs)) { |
1234 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
1235 | error_set(errp, QERR_IO_ERROR); |
1236 | return; | |
1237 | } | |
1238 | } | |
1239 | ||
f6186f49 BC |
1240 | if (bdrv_check_ext_snapshot(state->old_bs) != EXT_SNAPSHOT_ALLOWED) { |
1241 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); | |
1242 | return; | |
1243 | } | |
1244 | ||
ba5d6ab6 | 1245 | flags = state->old_bs->open_flags; |
9b9877ee | 1246 | |
9b9877ee WX |
1247 | /* create new image w/backing file */ |
1248 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1249 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
1250 | state->old_bs->filename, |
1251 | state->old_bs->drv->format_name, | |
9b9877ee WX |
1252 | NULL, -1, flags, &local_err, false); |
1253 | if (error_is_set(&local_err)) { | |
1254 | error_propagate(errp, local_err); | |
1255 | return; | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | /* We will manually add the backing_hd field to the bs later */ | |
ba5d6ab6 | 1260 | state->new_bs = bdrv_new(""); |
9b9877ee WX |
1261 | /* TODO Inherit bs->options or only take explicit options with an |
1262 | * extended QMP command? */ | |
ba5d6ab6 | 1263 | ret = bdrv_open(state->new_bs, new_image_file, NULL, |
34b5d2c6 | 1264 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
9b9877ee | 1265 | if (ret != 0) { |
34b5d2c6 | 1266 | error_propagate(errp, local_err); |
9b9877ee WX |
1267 | } |
1268 | } | |
1269 | ||
ba5d6ab6 | 1270 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 1271 | { |
ba5d6ab6 SH |
1272 | ExternalSnapshotState *state = |
1273 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1274 | |
ba5d6ab6 SH |
1275 | /* This removes our old bs and adds the new bs */ |
1276 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1277 | /* We don't need (or want) to use the transactional |
1278 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1279 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 1280 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
1281 | NULL); |
1282 | } | |
1283 | ||
ba5d6ab6 | 1284 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1285 | { |
ba5d6ab6 SH |
1286 | ExternalSnapshotState *state = |
1287 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1288 | if (state->new_bs) { | |
4f6fd349 | 1289 | bdrv_unref(state->new_bs); |
96b86bf7 WX |
1290 | } |
1291 | } | |
1292 | ||
3037f364 SH |
1293 | typedef struct DriveBackupState { |
1294 | BlkTransactionState common; | |
1295 | BlockDriverState *bs; | |
1296 | BlockJob *job; | |
1297 | } DriveBackupState; | |
1298 | ||
1299 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1300 | { | |
1301 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1302 | DriveBackup *backup; | |
1303 | Error *local_err = NULL; | |
1304 | ||
1305 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1306 | backup = common->action->drive_backup; | |
1307 | ||
1308 | qmp_drive_backup(backup->device, backup->target, | |
1309 | backup->has_format, backup->format, | |
b53169ea | 1310 | backup->sync, |
3037f364 SH |
1311 | backup->has_mode, backup->mode, |
1312 | backup->has_speed, backup->speed, | |
1313 | backup->has_on_source_error, backup->on_source_error, | |
1314 | backup->has_on_target_error, backup->on_target_error, | |
1315 | &local_err); | |
1316 | if (error_is_set(&local_err)) { | |
1317 | error_propagate(errp, local_err); | |
1318 | state->bs = NULL; | |
1319 | state->job = NULL; | |
1320 | return; | |
1321 | } | |
1322 | ||
1323 | state->bs = bdrv_find(backup->device); | |
1324 | state->job = state->bs->job; | |
1325 | } | |
1326 | ||
1327 | static void drive_backup_abort(BlkTransactionState *common) | |
1328 | { | |
1329 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1330 | BlockDriverState *bs = state->bs; | |
1331 | ||
1332 | /* Only cancel if it's the job we started */ | |
1333 | if (bs && bs->job && bs->job == state->job) { | |
1334 | block_job_cancel_sync(bs->job); | |
1335 | } | |
1336 | } | |
1337 | ||
78b18b78 SH |
1338 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1339 | { | |
1340 | error_setg(errp, "Transaction aborted using Abort action"); | |
1341 | } | |
1342 | ||
1343 | static void abort_commit(BlkTransactionState *common) | |
1344 | { | |
dfc6f865 | 1345 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1346 | } |
1347 | ||
ba0c86a3 | 1348 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1349 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1350 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1351 | .prepare = external_snapshot_prepare, |
1352 | .commit = external_snapshot_commit, | |
1353 | .abort = external_snapshot_abort, | |
1354 | }, | |
3037f364 SH |
1355 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1356 | .instance_size = sizeof(DriveBackupState), | |
1357 | .prepare = drive_backup_prepare, | |
1358 | .abort = drive_backup_abort, | |
1359 | }, | |
78b18b78 SH |
1360 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1361 | .instance_size = sizeof(BlkTransactionState), | |
1362 | .prepare = abort_prepare, | |
1363 | .commit = abort_commit, | |
1364 | }, | |
bbe86010 WX |
1365 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
1366 | .instance_size = sizeof(InternalSnapshotState), | |
1367 | .prepare = internal_snapshot_prepare, | |
1368 | .abort = internal_snapshot_abort, | |
1369 | }, | |
ba0c86a3 WX |
1370 | }; |
1371 | ||
8802d1fd JC |
1372 | /* |
1373 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1374 | * then we do not pivot any of the devices in the group, and abandon the | |
1375 | * snapshots | |
1376 | */ | |
c8a83e85 | 1377 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1378 | { |
c8a83e85 | 1379 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1380 | BlkTransactionState *state, *next; |
43e17041 | 1381 | Error *local_err = NULL; |
8802d1fd | 1382 | |
ba5d6ab6 | 1383 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1384 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1385 | ||
1386 | /* drain all i/o before any snapshots */ | |
1387 | bdrv_drain_all(); | |
1388 | ||
1389 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1390 | while (NULL != dev_entry) { | |
c8a83e85 | 1391 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1392 | const BdrvActionOps *ops; |
52e7c241 | 1393 | |
8802d1fd JC |
1394 | dev_info = dev_entry->value; |
1395 | dev_entry = dev_entry->next; | |
1396 | ||
ba0c86a3 WX |
1397 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1398 | ||
1399 | ops = &actions[dev_info->kind]; | |
aa3fe714 HR |
1400 | assert(ops->instance_size > 0); |
1401 | ||
ba5d6ab6 SH |
1402 | state = g_malloc0(ops->instance_size); |
1403 | state->ops = ops; | |
1404 | state->action = dev_info; | |
1405 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1406 | |
ba5d6ab6 | 1407 | state->ops->prepare(state, &local_err); |
ba0c86a3 WX |
1408 | if (error_is_set(&local_err)) { |
1409 | error_propagate(errp, local_err); | |
1410 | goto delete_and_fail; | |
8802d1fd | 1411 | } |
8802d1fd JC |
1412 | } |
1413 | ||
ba5d6ab6 | 1414 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1415 | if (state->ops->commit) { |
1416 | state->ops->commit(state); | |
1417 | } | |
8802d1fd JC |
1418 | } |
1419 | ||
1420 | /* success */ | |
1421 | goto exit; | |
1422 | ||
1423 | delete_and_fail: | |
1424 | /* | |
1425 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1426 | * the original bs for all images | |
1427 | */ | |
ba5d6ab6 SH |
1428 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1429 | if (state->ops->abort) { | |
1430 | state->ops->abort(state); | |
ba0c86a3 | 1431 | } |
8802d1fd JC |
1432 | } |
1433 | exit: | |
ba5d6ab6 SH |
1434 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1435 | if (state->ops->clean) { | |
1436 | state->ops->clean(state); | |
ba0c86a3 | 1437 | } |
ba5d6ab6 | 1438 | g_free(state); |
8802d1fd | 1439 | } |
8802d1fd JC |
1440 | } |
1441 | ||
1442 | ||
92d48558 | 1443 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1444 | { |
2d3735d3 SH |
1445 | if (bdrv_in_use(bs)) { |
1446 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
1447 | return; | |
1448 | } | |
2c6942fa | 1449 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
1450 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
1451 | return; | |
ea8f942f | 1452 | } |
92d48558 | 1453 | |
025ccaa7 PB |
1454 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1455 | bdrv_dev_eject_request(bs, force); | |
1456 | if (!force) { | |
92d48558 LC |
1457 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
1458 | return; | |
025ccaa7 | 1459 | } |
666daa68 | 1460 | } |
92d48558 | 1461 | |
3b5276b5 | 1462 | bdrv_close(bs); |
666daa68 MA |
1463 | } |
1464 | ||
c245b6a3 | 1465 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1466 | { |
1467 | BlockDriverState *bs; | |
666daa68 | 1468 | |
c245b6a3 | 1469 | bs = bdrv_find(device); |
666daa68 | 1470 | if (!bs) { |
c245b6a3 LC |
1471 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1472 | return; | |
92d48558 LC |
1473 | } |
1474 | ||
c245b6a3 | 1475 | eject_device(bs, force, errp); |
666daa68 MA |
1476 | } |
1477 | ||
a4dea8a9 | 1478 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
1479 | { |
1480 | BlockDriverState *bs; | |
1481 | int err; | |
1482 | ||
a4dea8a9 | 1483 | bs = bdrv_find(device); |
666daa68 | 1484 | if (!bs) { |
a4dea8a9 LC |
1485 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1486 | return; | |
666daa68 MA |
1487 | } |
1488 | ||
a4dea8a9 | 1489 | err = bdrv_set_key(bs, password); |
666daa68 | 1490 | if (err == -EINVAL) { |
a4dea8a9 LC |
1491 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1492 | return; | |
666daa68 | 1493 | } else if (err < 0) { |
a4dea8a9 LC |
1494 | error_set(errp, QERR_INVALID_PASSWORD); |
1495 | return; | |
666daa68 | 1496 | } |
666daa68 MA |
1497 | } |
1498 | ||
333a96ec LC |
1499 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1500 | int bdrv_flags, BlockDriver *drv, | |
1501 | const char *password, Error **errp) | |
1502 | { | |
34b5d2c6 | 1503 | Error *local_err = NULL; |
0eef407c LC |
1504 | int ret; |
1505 | ||
34b5d2c6 | 1506 | ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv, &local_err); |
0eef407c | 1507 | if (ret < 0) { |
34b5d2c6 | 1508 | error_propagate(errp, local_err); |
333a96ec LC |
1509 | return; |
1510 | } | |
1511 | ||
1512 | if (bdrv_key_required(bs)) { | |
1513 | if (password) { | |
1514 | if (bdrv_set_key(bs, password) < 0) { | |
1515 | error_set(errp, QERR_INVALID_PASSWORD); | |
1516 | } | |
1517 | } else { | |
1518 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1519 | bdrv_get_encrypted_filename(bs)); | |
1520 | } | |
1521 | } else if (password) { | |
1522 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1523 | } | |
1524 | } | |
1525 | ||
1526 | void qmp_change_blockdev(const char *device, const char *filename, | |
1527 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
1528 | { |
1529 | BlockDriverState *bs; | |
1530 | BlockDriver *drv = NULL; | |
1531 | int bdrv_flags; | |
92d48558 | 1532 | Error *err = NULL; |
666daa68 MA |
1533 | |
1534 | bs = bdrv_find(device); | |
1535 | if (!bs) { | |
333a96ec LC |
1536 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1537 | return; | |
666daa68 | 1538 | } |
333a96ec LC |
1539 | |
1540 | if (format) { | |
b64ec4e4 | 1541 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1542 | if (!drv) { |
333a96ec LC |
1543 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1544 | return; | |
666daa68 MA |
1545 | } |
1546 | } | |
333a96ec | 1547 | |
92d48558 LC |
1548 | eject_device(bs, 0, &err); |
1549 | if (error_is_set(&err)) { | |
333a96ec LC |
1550 | error_propagate(errp, err); |
1551 | return; | |
666daa68 | 1552 | } |
333a96ec | 1553 | |
528f7663 | 1554 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1555 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1556 | |
1557 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1558 | } |
9063f814 | 1559 | |
727f005e | 1560 | /* throttling disk I/O limits */ |
80047da5 | 1561 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1562 | int64_t bps_wr, |
1563 | int64_t iops, | |
1564 | int64_t iops_rd, | |
1565 | int64_t iops_wr, | |
1566 | bool has_bps_max, | |
1567 | int64_t bps_max, | |
1568 | bool has_bps_rd_max, | |
1569 | int64_t bps_rd_max, | |
1570 | bool has_bps_wr_max, | |
1571 | int64_t bps_wr_max, | |
1572 | bool has_iops_max, | |
1573 | int64_t iops_max, | |
1574 | bool has_iops_rd_max, | |
1575 | int64_t iops_rd_max, | |
1576 | bool has_iops_wr_max, | |
2024c1df BC |
1577 | int64_t iops_wr_max, |
1578 | bool has_iops_size, | |
1579 | int64_t iops_size, Error **errp) | |
727f005e | 1580 | { |
cc0681c4 | 1581 | ThrottleConfig cfg; |
727f005e ZYW |
1582 | BlockDriverState *bs; |
1583 | ||
80047da5 | 1584 | bs = bdrv_find(device); |
727f005e | 1585 | if (!bs) { |
80047da5 LC |
1586 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1587 | return; | |
727f005e ZYW |
1588 | } |
1589 | ||
cc0681c4 BC |
1590 | memset(&cfg, 0, sizeof(cfg)); |
1591 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1592 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1593 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1594 | ||
1595 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1596 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1597 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1598 | ||
3e9fab69 BC |
1599 | if (has_bps_max) { |
1600 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1601 | } | |
1602 | if (has_bps_rd_max) { | |
1603 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1604 | } | |
1605 | if (has_bps_wr_max) { | |
1606 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1607 | } | |
1608 | if (has_iops_max) { | |
1609 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1610 | } | |
1611 | if (has_iops_rd_max) { | |
1612 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1613 | } | |
1614 | if (has_iops_wr_max) { | |
1615 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1616 | } | |
727f005e | 1617 | |
2024c1df BC |
1618 | if (has_iops_size) { |
1619 | cfg.op_size = iops_size; | |
1620 | } | |
cc0681c4 BC |
1621 | |
1622 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1623 | return; |
727f005e ZYW |
1624 | } |
1625 | ||
cc0681c4 | 1626 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1627 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1628 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1629 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1630 | } |
1631 | ||
1632 | if (bs->io_limits_enabled) { | |
1633 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1634 | } |
727f005e ZYW |
1635 | } |
1636 | ||
9063f814 RH |
1637 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1638 | { | |
1639 | const char *id = qdict_get_str(qdict, "id"); | |
1640 | BlockDriverState *bs; | |
9063f814 RH |
1641 | |
1642 | bs = bdrv_find(id); | |
1643 | if (!bs) { | |
1644 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1645 | return -1; | |
1646 | } | |
8591675f MT |
1647 | if (bdrv_in_use(bs)) { |
1648 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1649 | return -1; | |
1650 | } | |
9063f814 RH |
1651 | |
1652 | /* quiesce block driver; prevent further io */ | |
922453bc | 1653 | bdrv_drain_all(); |
9063f814 RH |
1654 | bdrv_flush(bs); |
1655 | bdrv_close(bs); | |
1656 | ||
fa879d62 | 1657 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1658 | * then we need to make the drive anonymous until the device |
1659 | * can be removed. If this is a drive with no device backing | |
1660 | * then we can just get rid of the block driver state right here. | |
1661 | */ | |
fa879d62 | 1662 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1663 | bdrv_make_anon(bs); |
293c51a6 SH |
1664 | |
1665 | /* Further I/O must not pause the guest */ | |
1666 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1667 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 RH |
1668 | } else { |
1669 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1670 | } |
1671 | ||
9063f814 RH |
1672 | return 0; |
1673 | } | |
6d4a2b3a | 1674 | |
5e7caacb | 1675 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1676 | { |
6d4a2b3a | 1677 | BlockDriverState *bs; |
8732901e | 1678 | int ret; |
6d4a2b3a CH |
1679 | |
1680 | bs = bdrv_find(device); | |
1681 | if (!bs) { | |
5e7caacb LC |
1682 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1683 | return; | |
6d4a2b3a CH |
1684 | } |
1685 | ||
1686 | if (size < 0) { | |
939a1cc3 | 1687 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1688 | return; |
6d4a2b3a CH |
1689 | } |
1690 | ||
92b7a08d PL |
1691 | /* complete all in-flight operations before resizing the device */ |
1692 | bdrv_drain_all(); | |
1693 | ||
8732901e KW |
1694 | ret = bdrv_truncate(bs, size); |
1695 | switch (ret) { | |
939a1cc3 SH |
1696 | case 0: |
1697 | break; | |
1698 | case -ENOMEDIUM: | |
1699 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1700 | break; | |
1701 | case -ENOTSUP: | |
1702 | error_set(errp, QERR_UNSUPPORTED); | |
1703 | break; | |
1704 | case -EACCES: | |
1705 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1706 | break; | |
1707 | case -EBUSY: | |
1708 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1709 | break; | |
1710 | default: | |
8732901e | 1711 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1712 | break; |
6d4a2b3a | 1713 | } |
6d4a2b3a | 1714 | } |
12bd451f | 1715 | |
9abf2dba | 1716 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1717 | { |
1718 | BlockDriverState *bs = opaque; | |
1719 | QObject *obj; | |
1720 | ||
9abf2dba | 1721 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1722 | |
1723 | assert(bs->job); | |
1724 | obj = qobject_from_block_job(bs->job); | |
1725 | if (ret < 0) { | |
1726 | QDict *dict = qobject_to_qdict(obj); | |
1727 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1728 | } | |
1729 | ||
370521a1 SH |
1730 | if (block_job_is_cancelled(bs->job)) { |
1731 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1732 | } else { | |
1733 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1734 | } | |
12bd451f | 1735 | qobject_decref(obj); |
aa398a5c | 1736 | |
fa510ebf | 1737 | bdrv_put_ref_bh_schedule(bs); |
12bd451f SH |
1738 | } |
1739 | ||
1740 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1741 | const char *base, bool has_speed, int64_t speed, |
1742 | bool has_on_error, BlockdevOnError on_error, | |
1743 | Error **errp) | |
12bd451f SH |
1744 | { |
1745 | BlockDriverState *bs; | |
c8c3080f | 1746 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1747 | Error *local_err = NULL; |
12bd451f | 1748 | |
1d809098 PB |
1749 | if (!has_on_error) { |
1750 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1751 | } | |
1752 | ||
12bd451f SH |
1753 | bs = bdrv_find(device); |
1754 | if (!bs) { | |
1755 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1756 | return; | |
1757 | } | |
1758 | ||
12bd451f | 1759 | if (base) { |
c8c3080f MT |
1760 | base_bs = bdrv_find_backing_image(bs, base); |
1761 | if (base_bs == NULL) { | |
1762 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1763 | return; | |
1764 | } | |
12bd451f SH |
1765 | } |
1766 | ||
c83c66c3 | 1767 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1768 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1769 | if (error_is_set(&local_err)) { |
1770 | error_propagate(errp, local_err); | |
1771 | return; | |
12bd451f SH |
1772 | } |
1773 | ||
1774 | trace_qmp_block_stream(bs, bs->job); | |
1775 | } | |
2d47c6e9 | 1776 | |
ed61fc10 JC |
1777 | void qmp_block_commit(const char *device, |
1778 | bool has_base, const char *base, const char *top, | |
1779 | bool has_speed, int64_t speed, | |
1780 | Error **errp) | |
1781 | { | |
1782 | BlockDriverState *bs; | |
1783 | BlockDriverState *base_bs, *top_bs; | |
1784 | Error *local_err = NULL; | |
1785 | /* This will be part of the QMP command, if/when the | |
1786 | * BlockdevOnError change for blkmirror makes it in | |
1787 | */ | |
92aa5c6d | 1788 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1789 | |
1790 | /* drain all i/o before commits */ | |
1791 | bdrv_drain_all(); | |
1792 | ||
1793 | bs = bdrv_find(device); | |
1794 | if (!bs) { | |
1795 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1796 | return; | |
1797 | } | |
ed61fc10 JC |
1798 | |
1799 | /* default top_bs is the active layer */ | |
1800 | top_bs = bs; | |
1801 | ||
1802 | if (top) { | |
1803 | if (strcmp(bs->filename, top) != 0) { | |
1804 | top_bs = bdrv_find_backing_image(bs, top); | |
1805 | } | |
1806 | } | |
1807 | ||
1808 | if (top_bs == NULL) { | |
1809 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1810 | return; | |
1811 | } | |
1812 | ||
d5208c45 JC |
1813 | if (has_base && base) { |
1814 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1815 | } else { | |
1816 | base_bs = bdrv_find_base(top_bs); | |
1817 | } | |
1818 | ||
1819 | if (base_bs == NULL) { | |
1820 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1821 | return; | |
1822 | } | |
1823 | ||
ed61fc10 JC |
1824 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1825 | &local_err); | |
1826 | if (local_err != NULL) { | |
1827 | error_propagate(errp, local_err); | |
1828 | return; | |
1829 | } | |
ed61fc10 JC |
1830 | } |
1831 | ||
99a9addf SH |
1832 | void qmp_drive_backup(const char *device, const char *target, |
1833 | bool has_format, const char *format, | |
b53169ea | 1834 | enum MirrorSyncMode sync, |
99a9addf SH |
1835 | bool has_mode, enum NewImageMode mode, |
1836 | bool has_speed, int64_t speed, | |
1837 | bool has_on_source_error, BlockdevOnError on_source_error, | |
1838 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1839 | Error **errp) | |
1840 | { | |
1841 | BlockDriverState *bs; | |
1842 | BlockDriverState *target_bs; | |
fc5d3f84 | 1843 | BlockDriverState *source = NULL; |
99a9addf SH |
1844 | BlockDriver *drv = NULL; |
1845 | Error *local_err = NULL; | |
1846 | int flags; | |
1847 | int64_t size; | |
1848 | int ret; | |
1849 | ||
1850 | if (!has_speed) { | |
1851 | speed = 0; | |
1852 | } | |
1853 | if (!has_on_source_error) { | |
1854 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1855 | } | |
1856 | if (!has_on_target_error) { | |
1857 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1858 | } | |
1859 | if (!has_mode) { | |
1860 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1861 | } | |
1862 | ||
1863 | bs = bdrv_find(device); | |
1864 | if (!bs) { | |
1865 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1866 | return; | |
1867 | } | |
1868 | ||
1869 | if (!bdrv_is_inserted(bs)) { | |
1870 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1871 | return; | |
1872 | } | |
1873 | ||
1874 | if (!has_format) { | |
1875 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1876 | } | |
1877 | if (format) { | |
1878 | drv = bdrv_find_format(format); | |
1879 | if (!drv) { | |
1880 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1881 | return; | |
1882 | } | |
1883 | } | |
1884 | ||
1885 | if (bdrv_in_use(bs)) { | |
1886 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1887 | return; | |
1888 | } | |
1889 | ||
1890 | flags = bs->open_flags | BDRV_O_RDWR; | |
1891 | ||
fc5d3f84 IM |
1892 | /* See if we have a backing HD we can use to create our new image |
1893 | * on top of. */ | |
1894 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
1895 | source = bs->backing_hd; | |
1896 | if (!source) { | |
1897 | sync = MIRROR_SYNC_MODE_FULL; | |
1898 | } | |
1899 | } | |
1900 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
1901 | source = bs; | |
1902 | } | |
1903 | ||
99a9addf SH |
1904 | size = bdrv_getlength(bs); |
1905 | if (size < 0) { | |
1906 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1907 | return; | |
1908 | } | |
1909 | ||
1910 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1911 | assert(format && drv); | |
fc5d3f84 IM |
1912 | if (source) { |
1913 | bdrv_img_create(target, format, source->filename, | |
1914 | source->drv->format_name, NULL, | |
1915 | size, flags, &local_err, false); | |
1916 | } else { | |
1917 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
1918 | size, flags, &local_err, false); | |
1919 | } | |
99a9addf SH |
1920 | } |
1921 | ||
1922 | if (error_is_set(&local_err)) { | |
1923 | error_propagate(errp, local_err); | |
1924 | return; | |
1925 | } | |
1926 | ||
1927 | target_bs = bdrv_new(""); | |
34b5d2c6 | 1928 | ret = bdrv_open(target_bs, target, NULL, flags, drv, &local_err); |
99a9addf | 1929 | if (ret < 0) { |
4f6fd349 | 1930 | bdrv_unref(target_bs); |
34b5d2c6 | 1931 | error_propagate(errp, local_err); |
99a9addf SH |
1932 | return; |
1933 | } | |
1934 | ||
fc5d3f84 | 1935 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
1936 | block_job_cb, bs, &local_err); |
1937 | if (local_err != NULL) { | |
4f6fd349 | 1938 | bdrv_unref(target_bs); |
99a9addf SH |
1939 | error_propagate(errp, local_err); |
1940 | return; | |
1941 | } | |
99a9addf SH |
1942 | } |
1943 | ||
08e4ed6c PB |
1944 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1945 | ||
d9b902db PB |
1946 | void qmp_drive_mirror(const char *device, const char *target, |
1947 | bool has_format, const char *format, | |
1948 | enum MirrorSyncMode sync, | |
1949 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1950 | bool has_speed, int64_t speed, |
eee13dfe | 1951 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1952 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1953 | bool has_on_source_error, BlockdevOnError on_source_error, |
1954 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1955 | Error **errp) | |
d9b902db | 1956 | { |
d9b902db PB |
1957 | BlockDriverState *bs; |
1958 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
1959 | BlockDriver *drv = NULL; |
1960 | Error *local_err = NULL; | |
1961 | int flags; | |
ac3c5d83 | 1962 | int64_t size; |
d9b902db PB |
1963 | int ret; |
1964 | ||
1965 | if (!has_speed) { | |
1966 | speed = 0; | |
1967 | } | |
b952b558 PB |
1968 | if (!has_on_source_error) { |
1969 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1970 | } | |
1971 | if (!has_on_target_error) { | |
1972 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1973 | } | |
d9b902db PB |
1974 | if (!has_mode) { |
1975 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1976 | } | |
eee13dfe PB |
1977 | if (!has_granularity) { |
1978 | granularity = 0; | |
1979 | } | |
08e4ed6c PB |
1980 | if (!has_buf_size) { |
1981 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1982 | } | |
1983 | ||
eee13dfe PB |
1984 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1985 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1986 | return; | |
1987 | } | |
1988 | if (granularity & (granularity - 1)) { | |
1989 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1990 | return; | |
1991 | } | |
d9b902db PB |
1992 | |
1993 | bs = bdrv_find(device); | |
1994 | if (!bs) { | |
1995 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1996 | return; | |
1997 | } | |
1998 | ||
1999 | if (!bdrv_is_inserted(bs)) { | |
2000 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2001 | return; | |
2002 | } | |
2003 | ||
2004 | if (!has_format) { | |
2005 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2006 | } | |
2007 | if (format) { | |
2008 | drv = bdrv_find_format(format); | |
2009 | if (!drv) { | |
2010 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
2011 | return; | |
2012 | } | |
2013 | } | |
2014 | ||
2015 | if (bdrv_in_use(bs)) { | |
2016 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
2017 | return; | |
2018 | } | |
2019 | ||
2020 | flags = bs->open_flags | BDRV_O_RDWR; | |
2021 | source = bs->backing_hd; | |
2022 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
2023 | sync = MIRROR_SYNC_MODE_FULL; | |
2024 | } | |
2025 | ||
ac3c5d83 SH |
2026 | size = bdrv_getlength(bs); |
2027 | if (size < 0) { | |
2028 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2029 | return; | |
2030 | } | |
2031 | ||
d9b902db PB |
2032 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
2033 | /* create new image w/o backing file */ | |
2034 | assert(format && drv); | |
cf8f2426 | 2035 | bdrv_img_create(target, format, |
f382d43a | 2036 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
2037 | } else { |
2038 | switch (mode) { | |
2039 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
2040 | break; |
2041 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
2042 | /* create new image with backing file */ | |
cf8f2426 LC |
2043 | bdrv_img_create(target, format, |
2044 | source->filename, | |
2045 | source->drv->format_name, | |
f382d43a | 2046 | NULL, size, flags, &local_err, false); |
d9b902db PB |
2047 | break; |
2048 | default: | |
2049 | abort(); | |
2050 | } | |
2051 | } | |
2052 | ||
cf8f2426 LC |
2053 | if (error_is_set(&local_err)) { |
2054 | error_propagate(errp, local_err); | |
d9b902db PB |
2055 | return; |
2056 | } | |
2057 | ||
b812f671 PB |
2058 | /* Mirroring takes care of copy-on-write using the source's backing |
2059 | * file. | |
2060 | */ | |
d9b902db | 2061 | target_bs = bdrv_new(""); |
34b5d2c6 HR |
2062 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv, |
2063 | &local_err); | |
d9b902db | 2064 | if (ret < 0) { |
4f6fd349 | 2065 | bdrv_unref(target_bs); |
34b5d2c6 | 2066 | error_propagate(errp, local_err); |
d9b902db PB |
2067 | return; |
2068 | } | |
2069 | ||
08e4ed6c | 2070 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 2071 | on_source_error, on_target_error, |
b952b558 | 2072 | block_job_cb, bs, &local_err); |
d9b902db | 2073 | if (local_err != NULL) { |
4f6fd349 | 2074 | bdrv_unref(target_bs); |
d9b902db PB |
2075 | error_propagate(errp, local_err); |
2076 | return; | |
2077 | } | |
d9b902db PB |
2078 | } |
2079 | ||
2d47c6e9 SH |
2080 | static BlockJob *find_block_job(const char *device) |
2081 | { | |
2082 | BlockDriverState *bs; | |
2083 | ||
2084 | bs = bdrv_find(device); | |
2085 | if (!bs || !bs->job) { | |
2086 | return NULL; | |
2087 | } | |
2088 | return bs->job; | |
2089 | } | |
2090 | ||
882ec7ce | 2091 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
2092 | { |
2093 | BlockJob *job = find_block_job(device); | |
2094 | ||
2095 | if (!job) { | |
7ef15070 | 2096 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
2097 | return; |
2098 | } | |
2099 | ||
882ec7ce | 2100 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 2101 | } |
370521a1 | 2102 | |
6e37fb81 PB |
2103 | void qmp_block_job_cancel(const char *device, |
2104 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
2105 | { |
2106 | BlockJob *job = find_block_job(device); | |
2107 | ||
6e37fb81 PB |
2108 | if (!has_force) { |
2109 | force = false; | |
2110 | } | |
2111 | ||
370521a1 | 2112 | if (!job) { |
7ef15070 | 2113 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
2114 | return; |
2115 | } | |
6e37fb81 | 2116 | if (job->paused && !force) { |
8acc72a4 PB |
2117 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
2118 | return; | |
2119 | } | |
370521a1 SH |
2120 | |
2121 | trace_qmp_block_job_cancel(job); | |
2122 | block_job_cancel(job); | |
2123 | } | |
fb5458cd | 2124 | |
6e37fb81 PB |
2125 | void qmp_block_job_pause(const char *device, Error **errp) |
2126 | { | |
2127 | BlockJob *job = find_block_job(device); | |
2128 | ||
2129 | if (!job) { | |
2130 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2131 | return; | |
2132 | } | |
2133 | ||
2134 | trace_qmp_block_job_pause(job); | |
2135 | block_job_pause(job); | |
2136 | } | |
2137 | ||
2138 | void qmp_block_job_resume(const char *device, Error **errp) | |
2139 | { | |
2140 | BlockJob *job = find_block_job(device); | |
2141 | ||
2142 | if (!job) { | |
2143 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2144 | return; | |
2145 | } | |
2146 | ||
2147 | trace_qmp_block_job_resume(job); | |
2148 | block_job_resume(job); | |
2149 | } | |
2150 | ||
aeae883b PB |
2151 | void qmp_block_job_complete(const char *device, Error **errp) |
2152 | { | |
2153 | BlockJob *job = find_block_job(device); | |
2154 | ||
2155 | if (!job) { | |
2156 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2157 | return; | |
2158 | } | |
2159 | ||
2160 | trace_qmp_block_job_complete(job); | |
2161 | block_job_complete(job, errp); | |
2162 | } | |
2163 | ||
d26c9a15 KW |
2164 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
2165 | { | |
2166 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
2167 | QObject *obj; | |
2168 | QDict *qdict; | |
d26c9a15 KW |
2169 | Error *local_err = NULL; |
2170 | ||
2171 | /* Require an ID in the top level */ | |
2172 | if (!options->has_id) { | |
2173 | error_setg(errp, "Block device needs an ID"); | |
2174 | goto fail; | |
2175 | } | |
2176 | ||
2177 | /* TODO Sort it out in raw-posix and drive_init: Reject aio=native with | |
2178 | * cache.direct=false instead of silently switching to aio=threads, except | |
2179 | * if called from drive_init. | |
2180 | * | |
2181 | * For now, simply forbidding the combination for all drivers will do. */ | |
2182 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
2183 | bool direct = options->cache->has_direct && options->cache->direct; | |
2184 | if (!options->has_cache && !direct) { | |
2185 | error_setg(errp, "aio=native requires cache.direct=true"); | |
2186 | goto fail; | |
2187 | } | |
2188 | } | |
2189 | ||
2190 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), | |
2191 | &options, NULL, &local_err); | |
2192 | if (error_is_set(&local_err)) { | |
2193 | error_propagate(errp, local_err); | |
2194 | goto fail; | |
2195 | } | |
2196 | ||
2197 | obj = qmp_output_get_qobject(ov); | |
2198 | qdict = qobject_to_qdict(obj); | |
2199 | ||
2200 | qdict_flatten(qdict); | |
2201 | ||
b681072d KW |
2202 | blockdev_init(qdict, IF_NONE, &local_err); |
2203 | if (error_is_set(&local_err)) { | |
2204 | error_propagate(errp, local_err); | |
d26c9a15 KW |
2205 | goto fail; |
2206 | } | |
2207 | ||
2208 | fail: | |
2209 | qmp_output_visitor_cleanup(ov); | |
2210 | } | |
2211 | ||
fb5458cd SH |
2212 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
2213 | { | |
2214 | BlockJobInfoList **prev = opaque; | |
2215 | BlockJob *job = bs->job; | |
2216 | ||
2217 | if (job) { | |
30e628b7 PB |
2218 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
2219 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
2220 | (*prev)->next = elem; |
2221 | *prev = elem; | |
2222 | } | |
2223 | } | |
2224 | ||
2225 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
2226 | { | |
2227 | /* Dummy is a fake list element for holding the head pointer */ | |
2228 | BlockJobInfoList dummy = {}; | |
2229 | BlockJobInfoList *prev = &dummy; | |
2230 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
2231 | return dummy.next; | |
2232 | } | |
4d454574 | 2233 | |
0006383e | 2234 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 2235 | .name = "drive", |
0006383e | 2236 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
2237 | .desc = { |
2238 | { | |
4d454574 PB |
2239 | .name = "snapshot", |
2240 | .type = QEMU_OPT_BOOL, | |
2241 | .help = "enable/disable snapshot mode", | |
2242 | },{ | |
2243 | .name = "file", | |
2244 | .type = QEMU_OPT_STRING, | |
2245 | .help = "disk image", | |
a9384aff PB |
2246 | },{ |
2247 | .name = "discard", | |
2248 | .type = QEMU_OPT_STRING, | |
2249 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 2250 | },{ |
29c4e2b5 KW |
2251 | .name = "cache.writeback", |
2252 | .type = QEMU_OPT_BOOL, | |
2253 | .help = "enables writeback mode for any caches", | |
2254 | },{ | |
2255 | .name = "cache.direct", | |
2256 | .type = QEMU_OPT_BOOL, | |
2257 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
2258 | },{ | |
2259 | .name = "cache.no-flush", | |
2260 | .type = QEMU_OPT_BOOL, | |
2261 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
2262 | },{ |
2263 | .name = "aio", | |
2264 | .type = QEMU_OPT_STRING, | |
2265 | .help = "host AIO implementation (threads, native)", | |
2266 | },{ | |
2267 | .name = "format", | |
2268 | .type = QEMU_OPT_STRING, | |
2269 | .help = "disk format (raw, qcow2, ...)", | |
2270 | },{ | |
2271 | .name = "serial", | |
2272 | .type = QEMU_OPT_STRING, | |
2273 | .help = "disk serial number", | |
2274 | },{ | |
2275 | .name = "rerror", | |
2276 | .type = QEMU_OPT_STRING, | |
2277 | .help = "read error action", | |
2278 | },{ | |
2279 | .name = "werror", | |
2280 | .type = QEMU_OPT_STRING, | |
2281 | .help = "write error action", | |
4d454574 | 2282 | },{ |
0f227a94 | 2283 | .name = "read-only", |
4d454574 PB |
2284 | .type = QEMU_OPT_BOOL, |
2285 | .help = "open drive file as read-only", | |
2286 | },{ | |
57975222 | 2287 | .name = "throttling.iops-total", |
4d454574 PB |
2288 | .type = QEMU_OPT_NUMBER, |
2289 | .help = "limit total I/O operations per second", | |
2290 | },{ | |
57975222 | 2291 | .name = "throttling.iops-read", |
4d454574 PB |
2292 | .type = QEMU_OPT_NUMBER, |
2293 | .help = "limit read operations per second", | |
2294 | },{ | |
57975222 | 2295 | .name = "throttling.iops-write", |
4d454574 PB |
2296 | .type = QEMU_OPT_NUMBER, |
2297 | .help = "limit write operations per second", | |
2298 | },{ | |
57975222 | 2299 | .name = "throttling.bps-total", |
4d454574 PB |
2300 | .type = QEMU_OPT_NUMBER, |
2301 | .help = "limit total bytes per second", | |
2302 | },{ | |
57975222 | 2303 | .name = "throttling.bps-read", |
4d454574 PB |
2304 | .type = QEMU_OPT_NUMBER, |
2305 | .help = "limit read bytes per second", | |
2306 | },{ | |
57975222 | 2307 | .name = "throttling.bps-write", |
4d454574 PB |
2308 | .type = QEMU_OPT_NUMBER, |
2309 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2310 | },{ |
2311 | .name = "throttling.iops-total-max", | |
2312 | .type = QEMU_OPT_NUMBER, | |
2313 | .help = "I/O operations burst", | |
2314 | },{ | |
2315 | .name = "throttling.iops-read-max", | |
2316 | .type = QEMU_OPT_NUMBER, | |
2317 | .help = "I/O operations read burst", | |
2318 | },{ | |
2319 | .name = "throttling.iops-write-max", | |
2320 | .type = QEMU_OPT_NUMBER, | |
2321 | .help = "I/O operations write burst", | |
2322 | },{ | |
2323 | .name = "throttling.bps-total-max", | |
2324 | .type = QEMU_OPT_NUMBER, | |
2325 | .help = "total bytes burst", | |
2326 | },{ | |
2327 | .name = "throttling.bps-read-max", | |
2328 | .type = QEMU_OPT_NUMBER, | |
2329 | .help = "total bytes read burst", | |
2330 | },{ | |
2331 | .name = "throttling.bps-write-max", | |
2332 | .type = QEMU_OPT_NUMBER, | |
2333 | .help = "total bytes write burst", | |
2024c1df BC |
2334 | },{ |
2335 | .name = "throttling.iops-size", | |
2336 | .type = QEMU_OPT_NUMBER, | |
2337 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2338 | },{ |
2339 | .name = "copy-on-read", | |
2340 | .type = QEMU_OPT_BOOL, | |
2341 | .help = "copy read data from backing file into image file", | |
4d454574 PB |
2342 | }, |
2343 | { /* end of list */ } | |
2344 | }, | |
2345 | }; | |
0006383e KW |
2346 | |
2347 | QemuOptsList qemu_drive_opts = { | |
2348 | .name = "drive", | |
2349 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2350 | .desc = { | |
492fdc6f KW |
2351 | /* |
2352 | * no elements => accept any params | |
2353 | * validation will happen later | |
2354 | */ | |
0006383e KW |
2355 | { /* end of list */ } |
2356 | }, | |
2357 | }; |