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Commit | Line | Data |
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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 | ||
26f54e9a | 33 | #include "sysemu/block-backend.h" |
9c17d615 | 34 | #include "sysemu/blockdev.h" |
0d09e41a | 35 | #include "hw/block/block.h" |
737e150e | 36 | #include "block/blockjob.h" |
83c9089e | 37 | #include "monitor/monitor.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" | |
9e7dac7c | 43 | #include "qapi/util.h" |
9c17d615 | 44 | #include "sysemu/sysemu.h" |
737e150e | 45 | #include "block/block_int.h" |
a4dea8a9 | 46 | #include "qmp-commands.h" |
12bd451f | 47 | #include "trace.h" |
9c17d615 | 48 | #include "sysemu/arch_init.h" |
666daa68 | 49 | |
1960966d MA |
50 | static const char *const if_name[IF_COUNT] = { |
51 | [IF_NONE] = "none", | |
52 | [IF_IDE] = "ide", | |
53 | [IF_SCSI] = "scsi", | |
54 | [IF_FLOPPY] = "floppy", | |
55 | [IF_PFLASH] = "pflash", | |
56 | [IF_MTD] = "mtd", | |
57 | [IF_SD] = "sd", | |
58 | [IF_VIRTIO] = "virtio", | |
59 | [IF_XEN] = "xen", | |
60 | }; | |
61 | ||
21dff8cf | 62 | static int if_max_devs[IF_COUNT] = { |
27d6bf40 MA |
63 | /* |
64 | * Do not change these numbers! They govern how drive option | |
65 | * index maps to unit and bus. That mapping is ABI. | |
66 | * | |
67 | * All controllers used to imlement if=T drives need to support | |
68 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
69 | * Otherwise, some index values map to "impossible" bus, unit | |
70 | * values. | |
71 | * | |
72 | * For instance, if you change [IF_SCSI] to 255, -drive | |
73 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
74 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
75 | * the drive can't be set up. Regression. | |
76 | */ | |
77 | [IF_IDE] = 2, | |
78 | [IF_SCSI] = 7, | |
1960966d MA |
79 | }; |
80 | ||
21dff8cf JS |
81 | /** |
82 | * Boards may call this to offer board-by-board overrides | |
83 | * of the default, global values. | |
84 | */ | |
85 | void override_max_devs(BlockInterfaceType type, int max_devs) | |
86 | { | |
18e46a03 | 87 | BlockBackend *blk; |
21dff8cf JS |
88 | DriveInfo *dinfo; |
89 | ||
90 | if (max_devs <= 0) { | |
91 | return; | |
92 | } | |
93 | ||
18e46a03 MA |
94 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
95 | dinfo = blk_legacy_dinfo(blk); | |
21dff8cf JS |
96 | if (dinfo->type == type) { |
97 | fprintf(stderr, "Cannot override units-per-bus property of" | |
98 | " the %s interface, because a drive of that type has" | |
99 | " already been added.\n", if_name[type]); | |
100 | g_assert_not_reached(); | |
101 | } | |
102 | } | |
103 | ||
104 | if_max_devs[type] = max_devs; | |
105 | } | |
106 | ||
14bafc54 MA |
107 | /* |
108 | * We automatically delete the drive when a device using it gets | |
109 | * unplugged. Questionable feature, but we can't just drop it. | |
110 | * Device models call blockdev_mark_auto_del() to schedule the | |
111 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
112 | * when deletion is actually safe. | |
113 | */ | |
4be74634 | 114 | void blockdev_mark_auto_del(BlockBackend *blk) |
14bafc54 | 115 | { |
18e46a03 | 116 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
4be74634 | 117 | BlockDriverState *bs = blk_bs(blk); |
91fddb0d | 118 | AioContext *aio_context; |
14bafc54 | 119 | |
26f8b3a8 | 120 | if (!dinfo) { |
2d246f01 KW |
121 | return; |
122 | } | |
123 | ||
91fddb0d SH |
124 | aio_context = bdrv_get_aio_context(bs); |
125 | aio_context_acquire(aio_context); | |
126 | ||
12bde0ee PB |
127 | if (bs->job) { |
128 | block_job_cancel(bs->job); | |
129 | } | |
91fddb0d SH |
130 | |
131 | aio_context_release(aio_context); | |
132 | ||
26f8b3a8 | 133 | dinfo->auto_del = 1; |
14bafc54 MA |
134 | } |
135 | ||
4be74634 | 136 | void blockdev_auto_del(BlockBackend *blk) |
14bafc54 | 137 | { |
18e46a03 | 138 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
14bafc54 | 139 | |
0fc0f1fa | 140 | if (dinfo && dinfo->auto_del) { |
b9fe8a7a | 141 | blk_unref(blk); |
14bafc54 MA |
142 | } |
143 | } | |
144 | ||
d8f94e1b JS |
145 | /** |
146 | * Returns the current mapping of how many units per bus | |
147 | * a particular interface can support. | |
148 | * | |
149 | * A positive integer indicates n units per bus. | |
150 | * 0 implies the mapping has not been established. | |
151 | * -1 indicates an invalid BlockInterfaceType was given. | |
152 | */ | |
153 | int drive_get_max_devs(BlockInterfaceType type) | |
154 | { | |
155 | if (type >= IF_IDE && type < IF_COUNT) { | |
156 | return if_max_devs[type]; | |
157 | } | |
158 | ||
159 | return -1; | |
160 | } | |
161 | ||
505a7fb1 MA |
162 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
163 | { | |
164 | int max_devs = if_max_devs[type]; | |
165 | return max_devs ? index / max_devs : 0; | |
166 | } | |
167 | ||
168 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
169 | { | |
170 | int max_devs = if_max_devs[type]; | |
171 | return max_devs ? index % max_devs : index; | |
172 | } | |
173 | ||
2292ddae MA |
174 | QemuOpts *drive_def(const char *optstr) |
175 | { | |
176 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
177 | } | |
178 | ||
179 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 180 | const char *optstr) |
666daa68 | 181 | { |
666daa68 | 182 | QemuOpts *opts; |
2292ddae | 183 | char buf[32]; |
666daa68 | 184 | |
2292ddae | 185 | opts = drive_def(optstr); |
666daa68 MA |
186 | if (!opts) { |
187 | return NULL; | |
188 | } | |
2292ddae MA |
189 | if (type != IF_DEFAULT) { |
190 | qemu_opt_set(opts, "if", if_name[type]); | |
191 | } | |
192 | if (index >= 0) { | |
193 | snprintf(buf, sizeof(buf), "%d", index); | |
194 | qemu_opt_set(opts, "index", buf); | |
195 | } | |
666daa68 MA |
196 | if (file) |
197 | qemu_opt_set(opts, "file", file); | |
198 | return opts; | |
199 | } | |
200 | ||
201 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
202 | { | |
18e46a03 | 203 | BlockBackend *blk; |
666daa68 MA |
204 | DriveInfo *dinfo; |
205 | ||
18e46a03 MA |
206 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
207 | dinfo = blk_legacy_dinfo(blk); | |
208 | if (dinfo && dinfo->type == type | |
209 | && dinfo->bus == bus && dinfo->unit == unit) { | |
666daa68 | 210 | return dinfo; |
18e46a03 | 211 | } |
666daa68 MA |
212 | } |
213 | ||
214 | return NULL; | |
215 | } | |
216 | ||
a66c9dc7 JS |
217 | bool drive_check_orphaned(void) |
218 | { | |
18e46a03 | 219 | BlockBackend *blk; |
a66c9dc7 JS |
220 | DriveInfo *dinfo; |
221 | bool rs = false; | |
222 | ||
18e46a03 MA |
223 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
224 | dinfo = blk_legacy_dinfo(blk); | |
a66c9dc7 JS |
225 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ |
226 | /* Unless this is a default drive, this may be an oversight. */ | |
a7f53e26 | 227 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
a66c9dc7 JS |
228 | dinfo->type != IF_NONE) { |
229 | fprintf(stderr, "Warning: Orphaned drive without device: " | |
230 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", | |
d3aeb1b7 | 231 | blk_name(blk), blk_bs(blk)->filename, if_name[dinfo->type], |
a66c9dc7 JS |
232 | dinfo->bus, dinfo->unit); |
233 | rs = true; | |
234 | } | |
235 | } | |
236 | ||
237 | return rs; | |
238 | } | |
239 | ||
f1bd51ac MA |
240 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
241 | { | |
242 | return drive_get(type, | |
243 | drive_index_to_bus_id(type, index), | |
244 | drive_index_to_unit_id(type, index)); | |
245 | } | |
246 | ||
666daa68 MA |
247 | int drive_get_max_bus(BlockInterfaceType type) |
248 | { | |
249 | int max_bus; | |
18e46a03 | 250 | BlockBackend *blk; |
666daa68 MA |
251 | DriveInfo *dinfo; |
252 | ||
253 | max_bus = -1; | |
18e46a03 MA |
254 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
255 | dinfo = blk_legacy_dinfo(blk); | |
256 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { | |
666daa68 | 257 | max_bus = dinfo->bus; |
18e46a03 | 258 | } |
666daa68 MA |
259 | } |
260 | return max_bus; | |
261 | } | |
262 | ||
13839974 MA |
263 | /* Get a block device. This should only be used for single-drive devices |
264 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
265 | appropriate bus. */ | |
266 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
267 | { | |
268 | static int next_block_unit[IF_COUNT]; | |
269 | ||
270 | return drive_get(type, 0, next_block_unit[type]++); | |
271 | } | |
272 | ||
666daa68 MA |
273 | static void bdrv_format_print(void *opaque, const char *name) |
274 | { | |
807105a7 | 275 | error_printf(" %s", name); |
666daa68 MA |
276 | } |
277 | ||
aa398a5c SH |
278 | typedef struct { |
279 | QEMUBH *bh; | |
fa510ebf FZ |
280 | BlockDriverState *bs; |
281 | } BDRVPutRefBH; | |
aa398a5c | 282 | |
fa510ebf | 283 | static void bdrv_put_ref_bh(void *opaque) |
aa398a5c | 284 | { |
fa510ebf | 285 | BDRVPutRefBH *s = opaque; |
aa398a5c | 286 | |
fa510ebf | 287 | bdrv_unref(s->bs); |
aa398a5c SH |
288 | qemu_bh_delete(s->bh); |
289 | g_free(s); | |
290 | } | |
291 | ||
292 | /* | |
fa510ebf | 293 | * Release a BDS reference in a BH |
aa398a5c | 294 | * |
fa510ebf FZ |
295 | * It is not safe to use bdrv_unref() from a callback function when the callers |
296 | * still need the BlockDriverState. In such cases we schedule a BH to release | |
297 | * the reference. | |
aa398a5c | 298 | */ |
fa510ebf | 299 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
aa398a5c | 300 | { |
fa510ebf | 301 | BDRVPutRefBH *s; |
aa398a5c | 302 | |
fa510ebf FZ |
303 | s = g_new(BDRVPutRefBH, 1); |
304 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); | |
305 | s->bs = bs; | |
aa398a5c SH |
306 | qemu_bh_schedule(s->bh); |
307 | } | |
308 | ||
b681072d | 309 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
310 | { |
311 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 312 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 313 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 314 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 315 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 316 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 317 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 318 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 319 | } else { |
b681072d KW |
320 | error_setg(errp, "'%s' invalid %s error action", |
321 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
322 | return -1; |
323 | } | |
324 | } | |
325 | ||
cc0681c4 | 326 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 327 | { |
cc0681c4 BC |
328 | if (throttle_conflicting(cfg)) { |
329 | error_setg(errp, "bps/iops/max total values and read/write values" | |
330 | " cannot be used at the same time"); | |
0563e191 ZYW |
331 | return false; |
332 | } | |
333 | ||
cc0681c4 BC |
334 | if (!throttle_is_valid(cfg)) { |
335 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
336 | return false; |
337 | } | |
338 | ||
0563e191 ZYW |
339 | return true; |
340 | } | |
341 | ||
33cb7dc8 KW |
342 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
343 | ||
f298d071 | 344 | /* Takes the ownership of bs_opts */ |
18e46a03 MA |
345 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
346 | Error **errp) | |
666daa68 MA |
347 | { |
348 | const char *buf; | |
666daa68 MA |
349 | int ro = 0; |
350 | int bdrv_flags = 0; | |
351 | int on_read_error, on_write_error; | |
26f54e9a | 352 | BlockBackend *blk; |
a0f1eab1 | 353 | BlockDriverState *bs; |
cc0681c4 | 354 | ThrottleConfig cfg; |
666daa68 | 355 | int snapshot = 0; |
fb0490f6 | 356 | bool copy_on_read; |
666daa68 | 357 | int ret; |
c546194f | 358 | Error *error = NULL; |
0006383e | 359 | QemuOpts *opts; |
0006383e | 360 | const char *id; |
74fe54f2 | 361 | bool has_driver_specific_opts; |
465bee1d | 362 | BlockdevDetectZeroesOptions detect_zeroes; |
6db5f5d6 | 363 | BlockDriver *drv = NULL; |
666daa68 | 364 | |
f298d071 KW |
365 | /* Check common options by copying from bs_opts to opts, all other options |
366 | * stay in bs_opts for processing by bdrv_open(). */ | |
367 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 368 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 369 | if (error) { |
b681072d | 370 | error_propagate(errp, error); |
6376f952 | 371 | goto err_no_opts; |
0006383e KW |
372 | } |
373 | ||
0006383e | 374 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 375 | if (error) { |
b681072d | 376 | error_propagate(errp, error); |
ec9c10d2 | 377 | goto early_err; |
0006383e KW |
378 | } |
379 | ||
380 | if (id) { | |
381 | qdict_del(bs_opts, "id"); | |
382 | } | |
383 | ||
74fe54f2 KW |
384 | has_driver_specific_opts = !!qdict_size(bs_opts); |
385 | ||
666daa68 | 386 | /* extract parameters */ |
666daa68 | 387 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
0f227a94 | 388 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 389 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 | 390 | |
a9384aff PB |
391 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
392 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
b681072d | 393 | error_setg(errp, "invalid discard option"); |
ec9c10d2 | 394 | goto early_err; |
a9384aff PB |
395 | } |
396 | } | |
397 | ||
29c4e2b5 KW |
398 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
399 | bdrv_flags |= BDRV_O_CACHE_WB; | |
400 | } | |
401 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
402 | bdrv_flags |= BDRV_O_NOCACHE; | |
403 | } | |
1df6fa4b | 404 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
29c4e2b5 | 405 | bdrv_flags |= BDRV_O_NO_FLUSH; |
666daa68 MA |
406 | } |
407 | ||
408 | #ifdef CONFIG_LINUX_AIO | |
409 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
410 | if (!strcmp(buf, "native")) { | |
411 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
412 | } else if (!strcmp(buf, "threads")) { | |
413 | /* this is the default */ | |
414 | } else { | |
b681072d | 415 | error_setg(errp, "invalid aio option"); |
ec9c10d2 | 416 | goto early_err; |
666daa68 MA |
417 | } |
418 | } | |
419 | #endif | |
420 | ||
421 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
422 | if (is_help_option(buf)) { |
423 | error_printf("Supported formats:"); | |
424 | bdrv_iterate_format(bdrv_format_print, NULL); | |
425 | error_printf("\n"); | |
ec9c10d2 | 426 | goto early_err; |
666daa68 | 427 | } |
74fe54f2 | 428 | |
8f94a6e4 | 429 | drv = bdrv_find_format(buf); |
6db5f5d6 | 430 | if (!drv) { |
b681072d | 431 | error_setg(errp, "'%s' invalid format", buf); |
ec9c10d2 | 432 | goto early_err; |
6db5f5d6 | 433 | } |
666daa68 MA |
434 | } |
435 | ||
0563e191 | 436 | /* disk I/O throttling */ |
cc0681c4 BC |
437 | memset(&cfg, 0, sizeof(cfg)); |
438 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 439 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 440 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 441 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 442 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 443 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 444 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 445 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 446 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 447 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 448 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 449 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 450 | |
3e9fab69 BC |
451 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
452 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
453 | cfg.buckets[THROTTLE_BPS_READ].max = | |
454 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
455 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
456 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
457 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
458 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
459 | cfg.buckets[THROTTLE_OPS_READ].max = | |
460 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
461 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
462 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 463 | |
2024c1df | 464 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
465 | |
466 | if (!check_throttle_config(&cfg, &error)) { | |
b681072d | 467 | error_propagate(errp, error); |
ec9c10d2 | 468 | goto early_err; |
0563e191 ZYW |
469 | } |
470 | ||
92aa5c6d | 471 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 472 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 473 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 474 | if (error) { |
b681072d | 475 | error_propagate(errp, error); |
ec9c10d2 | 476 | goto early_err; |
666daa68 MA |
477 | } |
478 | } | |
479 | ||
92aa5c6d | 480 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 481 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 482 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 483 | if (error) { |
b681072d | 484 | error_propagate(errp, error); |
ec9c10d2 | 485 | goto early_err; |
666daa68 MA |
486 | } |
487 | } | |
488 | ||
465bee1d | 489 | detect_zeroes = |
9e7dac7c PL |
490 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, |
491 | qemu_opt_get(opts, "detect-zeroes"), | |
492 | BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX, | |
493 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, | |
494 | &error); | |
465bee1d PL |
495 | if (error) { |
496 | error_propagate(errp, error); | |
497 | goto early_err; | |
498 | } | |
499 | ||
500 | if (detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && | |
501 | !(bdrv_flags & BDRV_O_UNMAP)) { | |
502 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " | |
503 | "without setting discard operation to unmap"); | |
504 | goto early_err; | |
505 | } | |
506 | ||
326642bc | 507 | /* init */ |
7e7d56d9 | 508 | blk = blk_new_with_bs(qemu_opts_id(opts), errp); |
26f54e9a MA |
509 | if (!blk) { |
510 | goto early_err; | |
511 | } | |
7e7d56d9 | 512 | bs = blk_bs(blk); |
a0f1eab1 MA |
513 | bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
514 | bs->read_only = ro; | |
515 | bs->detect_zeroes = detect_zeroes; | |
666daa68 | 516 | |
a0f1eab1 | 517 | bdrv_set_on_error(bs, on_read_error, on_write_error); |
abd7f68d | 518 | |
0563e191 | 519 | /* disk I/O throttling */ |
cc0681c4 | 520 | if (throttle_enabled(&cfg)) { |
a0f1eab1 MA |
521 | bdrv_io_limits_enable(bs); |
522 | bdrv_set_io_limits(bs, &cfg); | |
cc0681c4 | 523 | } |
0563e191 | 524 | |
dd5b0d71 | 525 | if (!file || !*file) { |
74fe54f2 | 526 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
527 | file = NULL; |
528 | } else { | |
ec9c10d2 SH |
529 | QDECREF(bs_opts); |
530 | qemu_opts_del(opts); | |
18e46a03 | 531 | return blk; |
c2ad1b0c | 532 | } |
666daa68 MA |
533 | } |
534 | if (snapshot) { | |
535 | /* always use cache=unsafe with snapshot */ | |
536 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
537 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
538 | } | |
539 | ||
fb0490f6 SH |
540 | if (copy_on_read) { |
541 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
542 | } | |
543 | ||
ed9d4205 BC |
544 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
545 | bdrv_flags |= BDRV_O_INCOMING; | |
546 | } | |
547 | ||
666daa68 MA |
548 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; |
549 | ||
74fe54f2 | 550 | QINCREF(bs_opts); |
a0f1eab1 | 551 | ret = bdrv_open(&bs, file, NULL, bs_opts, bdrv_flags, drv, &error); |
fa1d36df | 552 | assert(bs == blk_bs(blk)); |
0006383e | 553 | |
666daa68 | 554 | if (ret < 0) { |
b681072d | 555 | error_setg(errp, "could not open disk image %s: %s", |
d3aeb1b7 | 556 | file ?: blk_name(blk), error_get_pretty(error)); |
b681072d | 557 | error_free(error); |
a9ae2bff | 558 | goto err; |
666daa68 MA |
559 | } |
560 | ||
a0f1eab1 | 561 | if (bdrv_key_required(bs)) { |
666daa68 | 562 | autostart = 0; |
a0f1eab1 | 563 | } |
0006383e | 564 | |
74fe54f2 | 565 | QDECREF(bs_opts); |
0006383e KW |
566 | qemu_opts_del(opts); |
567 | ||
18e46a03 | 568 | return blk; |
a9ae2bff MA |
569 | |
570 | err: | |
26f54e9a | 571 | blk_unref(blk); |
ec9c10d2 | 572 | early_err: |
ec9c10d2 | 573 | qemu_opts_del(opts); |
6376f952 MA |
574 | err_no_opts: |
575 | QDECREF(bs_opts); | |
a9ae2bff | 576 | return NULL; |
666daa68 MA |
577 | } |
578 | ||
5abbf0ee KW |
579 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
580 | Error **errp) | |
57975222 KW |
581 | { |
582 | const char *value; | |
583 | ||
584 | value = qemu_opt_get(opts, from); | |
585 | if (value) { | |
5abbf0ee KW |
586 | if (qemu_opt_find(opts, to)) { |
587 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
588 | "same time", to, from); | |
589 | return; | |
590 | } | |
20d6cd47 JL |
591 | } |
592 | ||
593 | /* rename all items in opts */ | |
594 | while ((value = qemu_opt_get(opts, from))) { | |
57975222 KW |
595 | qemu_opt_set(opts, to, value); |
596 | qemu_opt_unset(opts, from); | |
597 | } | |
598 | } | |
599 | ||
33cb7dc8 KW |
600 | QemuOptsList qemu_legacy_drive_opts = { |
601 | .name = "drive", | |
602 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
603 | .desc = { | |
604 | { | |
87a899c5 KW |
605 | .name = "bus", |
606 | .type = QEMU_OPT_NUMBER, | |
607 | .help = "bus number", | |
608 | },{ | |
609 | .name = "unit", | |
610 | .type = QEMU_OPT_NUMBER, | |
611 | .help = "unit number (i.e. lun for scsi)", | |
612 | },{ | |
613 | .name = "index", | |
614 | .type = QEMU_OPT_NUMBER, | |
615 | .help = "index number", | |
616 | },{ | |
33cb7dc8 KW |
617 | .name = "media", |
618 | .type = QEMU_OPT_STRING, | |
619 | .help = "media type (disk, cdrom)", | |
593d464b KW |
620 | },{ |
621 | .name = "if", | |
622 | .type = QEMU_OPT_STRING, | |
623 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
624 | },{ |
625 | .name = "cyls", | |
626 | .type = QEMU_OPT_NUMBER, | |
627 | .help = "number of cylinders (ide disk geometry)", | |
628 | },{ | |
629 | .name = "heads", | |
630 | .type = QEMU_OPT_NUMBER, | |
631 | .help = "number of heads (ide disk geometry)", | |
632 | },{ | |
633 | .name = "secs", | |
634 | .type = QEMU_OPT_NUMBER, | |
635 | .help = "number of sectors (ide disk geometry)", | |
636 | },{ | |
637 | .name = "trans", | |
638 | .type = QEMU_OPT_STRING, | |
639 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
640 | },{ |
641 | .name = "boot", | |
642 | .type = QEMU_OPT_BOOL, | |
643 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
644 | },{ |
645 | .name = "addr", | |
646 | .type = QEMU_OPT_STRING, | |
647 | .help = "pci address (virtio only)", | |
bcf83158 KW |
648 | },{ |
649 | .name = "serial", | |
650 | .type = QEMU_OPT_STRING, | |
651 | .help = "disk serial number", | |
d095b465 HR |
652 | },{ |
653 | .name = "file", | |
654 | .type = QEMU_OPT_STRING, | |
655 | .help = "file name", | |
33cb7dc8 | 656 | }, |
0ebd24e0 KW |
657 | |
658 | /* Options that are passed on, but have special semantics with -drive */ | |
659 | { | |
660 | .name = "read-only", | |
661 | .type = QEMU_OPT_BOOL, | |
662 | .help = "open drive file as read-only", | |
ee13ed1c KW |
663 | },{ |
664 | .name = "rerror", | |
665 | .type = QEMU_OPT_STRING, | |
666 | .help = "read error action", | |
667 | },{ | |
668 | .name = "werror", | |
669 | .type = QEMU_OPT_STRING, | |
670 | .help = "write error action", | |
0ebd24e0 KW |
671 | },{ |
672 | .name = "copy-on-read", | |
673 | .type = QEMU_OPT_BOOL, | |
674 | .help = "copy read data from backing file into image file", | |
675 | }, | |
676 | ||
33cb7dc8 KW |
677 | { /* end of list */ } |
678 | }, | |
679 | }; | |
680 | ||
60e19e06 | 681 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 682 | { |
29c4e2b5 | 683 | const char *value; |
18e46a03 | 684 | BlockBackend *blk; |
33cb7dc8 | 685 | DriveInfo *dinfo = NULL; |
f298d071 | 686 | QDict *bs_opts; |
33cb7dc8 KW |
687 | QemuOpts *legacy_opts; |
688 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 689 | BlockInterfaceType type; |
b41a7338 | 690 | int cyls, heads, secs, translation; |
87a899c5 | 691 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 692 | const char *devaddr; |
ee13ed1c | 693 | const char *werror, *rerror; |
a7fdbcf0 FZ |
694 | bool read_only = false; |
695 | bool copy_on_read; | |
bcf83158 | 696 | const char *serial; |
d095b465 | 697 | const char *filename; |
33cb7dc8 | 698 | Error *local_err = NULL; |
247147fb | 699 | int i; |
29c4e2b5 | 700 | |
57975222 | 701 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
702 | static const struct { |
703 | const char *from; | |
704 | const char *to; | |
705 | } opt_renames[] = { | |
706 | { "iops", "throttling.iops-total" }, | |
707 | { "iops_rd", "throttling.iops-read" }, | |
708 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 709 | |
247147fb KW |
710 | { "bps", "throttling.bps-total" }, |
711 | { "bps_rd", "throttling.bps-read" }, | |
712 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 713 | |
247147fb KW |
714 | { "iops_max", "throttling.iops-total-max" }, |
715 | { "iops_rd_max", "throttling.iops-read-max" }, | |
716 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 717 | |
247147fb KW |
718 | { "bps_max", "throttling.bps-total-max" }, |
719 | { "bps_rd_max", "throttling.bps-read-max" }, | |
720 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 721 | |
247147fb | 722 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 723 | |
247147fb KW |
724 | { "readonly", "read-only" }, |
725 | }; | |
726 | ||
727 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
728 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
729 | &local_err); | |
730 | if (local_err) { | |
731 | error_report("%s", error_get_pretty(local_err)); | |
732 | error_free(local_err); | |
733 | return NULL; | |
734 | } | |
247147fb | 735 | } |
0f227a94 | 736 | |
29c4e2b5 KW |
737 | value = qemu_opt_get(all_opts, "cache"); |
738 | if (value) { | |
739 | int flags = 0; | |
740 | ||
741 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
742 | error_report("invalid cache option"); | |
743 | return NULL; | |
744 | } | |
745 | ||
746 | /* Specific options take precedence */ | |
747 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
748 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
749 | !!(flags & BDRV_O_CACHE_WB)); | |
750 | } | |
751 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
752 | qemu_opt_set_bool(all_opts, "cache.direct", | |
753 | !!(flags & BDRV_O_NOCACHE)); | |
754 | } | |
755 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
756 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
757 | !!(flags & BDRV_O_NO_FLUSH)); | |
758 | } | |
759 | qemu_opt_unset(all_opts, "cache"); | |
760 | } | |
761 | ||
f298d071 KW |
762 | /* Get a QDict for processing the options */ |
763 | bs_opts = qdict_new(); | |
764 | qemu_opts_to_qdict(all_opts, bs_opts); | |
765 | ||
87ea75d5 PC |
766 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
767 | &error_abort); | |
33cb7dc8 | 768 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 769 | if (local_err) { |
e8817e7b | 770 | error_report("%s", error_get_pretty(local_err)); |
33cb7dc8 KW |
771 | error_free(local_err); |
772 | goto fail; | |
773 | } | |
774 | ||
26929298 KW |
775 | /* Deprecated option boot=[on|off] */ |
776 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
777 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
778 | "ignored. Future versions will reject this parameter. Please " | |
779 | "update your scripts.\n"); | |
780 | } | |
781 | ||
33cb7dc8 KW |
782 | /* Media type */ |
783 | value = qemu_opt_get(legacy_opts, "media"); | |
784 | if (value) { | |
785 | if (!strcmp(value, "disk")) { | |
786 | media = MEDIA_DISK; | |
787 | } else if (!strcmp(value, "cdrom")) { | |
788 | media = MEDIA_CDROM; | |
a7fdbcf0 | 789 | read_only = true; |
33cb7dc8 KW |
790 | } else { |
791 | error_report("'%s' invalid media", value); | |
792 | goto fail; | |
793 | } | |
794 | } | |
795 | ||
0ebd24e0 | 796 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 797 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
798 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
799 | ||
800 | if (read_only && copy_on_read) { | |
801 | error_report("warning: disabling copy-on-read on read-only drive"); | |
802 | copy_on_read = false; | |
803 | } | |
804 | ||
805 | qdict_put(bs_opts, "read-only", | |
806 | qstring_from_str(read_only ? "on" : "off")); | |
807 | qdict_put(bs_opts, "copy-on-read", | |
808 | qstring_from_str(copy_on_read ? "on" :"off")); | |
809 | ||
593d464b KW |
810 | /* Controller type */ |
811 | value = qemu_opt_get(legacy_opts, "if"); | |
812 | if (value) { | |
813 | for (type = 0; | |
814 | type < IF_COUNT && strcmp(value, if_name[type]); | |
815 | type++) { | |
816 | } | |
817 | if (type == IF_COUNT) { | |
818 | error_report("unsupported bus type '%s'", value); | |
819 | goto fail; | |
820 | } | |
821 | } else { | |
822 | type = block_default_type; | |
823 | } | |
824 | ||
b41a7338 KW |
825 | /* Geometry */ |
826 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
827 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
828 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
829 | ||
830 | if (cyls || heads || secs) { | |
831 | if (cyls < 1) { | |
832 | error_report("invalid physical cyls number"); | |
833 | goto fail; | |
834 | } | |
835 | if (heads < 1) { | |
836 | error_report("invalid physical heads number"); | |
837 | goto fail; | |
838 | } | |
839 | if (secs < 1) { | |
840 | error_report("invalid physical secs number"); | |
841 | goto fail; | |
842 | } | |
843 | } | |
844 | ||
845 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
846 | value = qemu_opt_get(legacy_opts, "trans"); | |
847 | if (value != NULL) { | |
848 | if (!cyls) { | |
849 | error_report("'%s' trans must be used with cyls, heads and secs", | |
850 | value); | |
851 | goto fail; | |
852 | } | |
853 | if (!strcmp(value, "none")) { | |
854 | translation = BIOS_ATA_TRANSLATION_NONE; | |
855 | } else if (!strcmp(value, "lba")) { | |
856 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
857 | } else if (!strcmp(value, "large")) { |
858 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
859 | } else if (!strcmp(value, "rechs")) { | |
860 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
861 | } else if (!strcmp(value, "auto")) { |
862 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
863 | } else { | |
864 | error_report("'%s' invalid translation type", value); | |
865 | goto fail; | |
866 | } | |
867 | } | |
868 | ||
869 | if (media == MEDIA_CDROM) { | |
870 | if (cyls || secs || heads) { | |
871 | error_report("CHS can't be set with media=cdrom"); | |
872 | goto fail; | |
873 | } | |
874 | } | |
875 | ||
87a899c5 KW |
876 | /* Device address specified by bus/unit or index. |
877 | * If none was specified, try to find the first free one. */ | |
878 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
879 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
880 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
881 | ||
882 | max_devs = if_max_devs[type]; | |
883 | ||
884 | if (index != -1) { | |
885 | if (bus_id != 0 || unit_id != -1) { | |
886 | error_report("index cannot be used with bus and unit"); | |
887 | goto fail; | |
888 | } | |
889 | bus_id = drive_index_to_bus_id(type, index); | |
890 | unit_id = drive_index_to_unit_id(type, index); | |
891 | } | |
892 | ||
893 | if (unit_id == -1) { | |
894 | unit_id = 0; | |
895 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
896 | unit_id++; | |
897 | if (max_devs && unit_id >= max_devs) { | |
898 | unit_id -= max_devs; | |
899 | bus_id++; | |
900 | } | |
901 | } | |
902 | } | |
903 | ||
904 | if (max_devs && unit_id >= max_devs) { | |
905 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
906 | goto fail; | |
907 | } | |
908 | ||
909 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
910 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
911 | bus_id, unit_id, index); | |
912 | goto fail; | |
913 | } | |
914 | ||
bcf83158 KW |
915 | /* Serial number */ |
916 | serial = qemu_opt_get(legacy_opts, "serial"); | |
917 | ||
87a899c5 KW |
918 | /* no id supplied -> create one */ |
919 | if (qemu_opts_id(all_opts) == NULL) { | |
920 | char *new_id; | |
921 | const char *mediastr = ""; | |
922 | if (type == IF_IDE || type == IF_SCSI) { | |
923 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
924 | } | |
925 | if (max_devs) { | |
926 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
927 | mediastr, unit_id); | |
928 | } else { | |
929 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
930 | mediastr, unit_id); | |
931 | } | |
932 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
933 | g_free(new_id); | |
934 | } | |
935 | ||
394c7d4d KW |
936 | /* Add virtio block device */ |
937 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
938 | if (devaddr && type != IF_VIRTIO) { | |
939 | error_report("addr is not supported by this bus type"); | |
940 | goto fail; | |
941 | } | |
942 | ||
943 | if (type == IF_VIRTIO) { | |
944 | QemuOpts *devopts; | |
87ea75d5 PC |
945 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
946 | &error_abort); | |
394c7d4d KW |
947 | if (arch_type == QEMU_ARCH_S390X) { |
948 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); | |
949 | } else { | |
950 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); | |
951 | } | |
952 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id")); | |
953 | if (devaddr) { | |
954 | qemu_opt_set(devopts, "addr", devaddr); | |
955 | } | |
956 | } | |
957 | ||
d095b465 HR |
958 | filename = qemu_opt_get(legacy_opts, "file"); |
959 | ||
ee13ed1c KW |
960 | /* Check werror/rerror compatibility with if=... */ |
961 | werror = qemu_opt_get(legacy_opts, "werror"); | |
962 | if (werror != NULL) { | |
963 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
964 | type != IF_NONE) { | |
965 | error_report("werror is not supported by this bus type"); | |
966 | goto fail; | |
967 | } | |
968 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
969 | } | |
970 | ||
971 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
972 | if (rerror != NULL) { | |
973 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
974 | type != IF_NONE) { | |
975 | error_report("rerror is not supported by this bus type"); | |
976 | goto fail; | |
977 | } | |
978 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
979 | } | |
980 | ||
2d246f01 | 981 | /* Actual block device init: Functionality shared with blockdev-add */ |
18e46a03 | 982 | blk = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 983 | bs_opts = NULL; |
18e46a03 | 984 | if (!blk) { |
84d18f06 | 985 | if (local_err) { |
e8817e7b | 986 | error_report("%s", error_get_pretty(local_err)); |
b681072d KW |
987 | error_free(local_err); |
988 | } | |
2d246f01 | 989 | goto fail; |
b681072d | 990 | } else { |
84d18f06 | 991 | assert(!local_err); |
2d246f01 KW |
992 | } |
993 | ||
26f8b3a8 MA |
994 | /* Create legacy DriveInfo */ |
995 | dinfo = g_malloc0(sizeof(*dinfo)); | |
f298d071 | 996 | dinfo->opts = all_opts; |
2d246f01 | 997 | |
b41a7338 KW |
998 | dinfo->cyls = cyls; |
999 | dinfo->heads = heads; | |
1000 | dinfo->secs = secs; | |
1001 | dinfo->trans = translation; | |
1002 | ||
ee13ed1c | 1003 | dinfo->type = type; |
87a899c5 KW |
1004 | dinfo->bus = bus_id; |
1005 | dinfo->unit = unit_id; | |
394c7d4d | 1006 | dinfo->devaddr = devaddr; |
bcf83158 KW |
1007 | dinfo->serial = g_strdup(serial); |
1008 | ||
26f8b3a8 MA |
1009 | blk_set_legacy_dinfo(blk, dinfo); |
1010 | ||
e34ef046 KW |
1011 | switch(type) { |
1012 | case IF_IDE: | |
1013 | case IF_SCSI: | |
1014 | case IF_XEN: | |
1015 | case IF_NONE: | |
1016 | dinfo->media_cd = media == MEDIA_CDROM; | |
1017 | break; | |
1018 | default: | |
1019 | break; | |
1020 | } | |
1021 | ||
2d246f01 | 1022 | fail: |
33cb7dc8 | 1023 | qemu_opts_del(legacy_opts); |
3cb0e25c | 1024 | QDECREF(bs_opts); |
2d246f01 | 1025 | return dinfo; |
57975222 KW |
1026 | } |
1027 | ||
666daa68 MA |
1028 | void do_commit(Monitor *mon, const QDict *qdict) |
1029 | { | |
666daa68 | 1030 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 1031 | BlockDriverState *bs; |
e8877497 | 1032 | int ret; |
666daa68 | 1033 | |
6ab4b5ab | 1034 | if (!strcmp(device, "all")) { |
e8877497 | 1035 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
1036 | } else { |
1037 | bs = bdrv_find(device); | |
ac59eb95 | 1038 | if (!bs) { |
58513bde | 1039 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 1040 | return; |
6ab4b5ab | 1041 | } |
2d3735d3 | 1042 | ret = bdrv_commit(bs); |
58513bde JC |
1043 | } |
1044 | if (ret < 0) { | |
1045 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
1046 | strerror(-ret)); | |
666daa68 MA |
1047 | } |
1048 | } | |
1049 | ||
6cc2a415 PB |
1050 | static void blockdev_do_action(int kind, void *data, Error **errp) |
1051 | { | |
c8a83e85 KW |
1052 | TransactionAction action; |
1053 | TransactionActionList list; | |
6cc2a415 PB |
1054 | |
1055 | action.kind = kind; | |
1056 | action.data = data; | |
1057 | list.value = &action; | |
1058 | list.next = NULL; | |
1059 | qmp_transaction(&list, errp); | |
1060 | } | |
1061 | ||
0901f67e BC |
1062 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1063 | bool has_node_name, const char *node_name, | |
1064 | const char *snapshot_file, | |
1065 | bool has_snapshot_node_name, | |
1066 | const char *snapshot_node_name, | |
6106e249 | 1067 | bool has_format, const char *format, |
0901f67e | 1068 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1069 | { |
6cc2a415 | 1070 | BlockdevSnapshot snapshot = { |
0901f67e | 1071 | .has_device = has_device, |
6cc2a415 | 1072 | .device = (char *) device, |
0901f67e BC |
1073 | .has_node_name = has_node_name, |
1074 | .node_name = (char *) node_name, | |
6cc2a415 | 1075 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1076 | .has_snapshot_node_name = has_snapshot_node_name, |
1077 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1078 | .has_format = has_format, |
1079 | .format = (char *) format, | |
1080 | .has_mode = has_mode, | |
1081 | .mode = mode, | |
1082 | }; | |
c8a83e85 KW |
1083 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
1084 | &snapshot, errp); | |
f8882568 JS |
1085 | } |
1086 | ||
f323bc9e WX |
1087 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1088 | const char *name, | |
1089 | Error **errp) | |
1090 | { | |
1091 | BlockdevSnapshotInternal snapshot = { | |
1092 | .device = (char *) device, | |
1093 | .name = (char *) name | |
1094 | }; | |
1095 | ||
1096 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
1097 | &snapshot, errp); | |
1098 | } | |
1099 | ||
44e3e053 WX |
1100 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1101 | bool has_id, | |
1102 | const char *id, | |
1103 | bool has_name, | |
1104 | const char *name, | |
1105 | Error **errp) | |
1106 | { | |
1107 | BlockDriverState *bs = bdrv_find(device); | |
4ef3982a | 1108 | AioContext *aio_context; |
44e3e053 WX |
1109 | QEMUSnapshotInfo sn; |
1110 | Error *local_err = NULL; | |
1111 | SnapshotInfo *info = NULL; | |
1112 | int ret; | |
1113 | ||
1114 | if (!bs) { | |
1115 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1116 | return NULL; | |
1117 | } | |
1118 | ||
1119 | if (!has_id) { | |
1120 | id = NULL; | |
1121 | } | |
1122 | ||
1123 | if (!has_name) { | |
1124 | name = NULL; | |
1125 | } | |
1126 | ||
1127 | if (!id && !name) { | |
1128 | error_setg(errp, "Name or id must be provided"); | |
1129 | return NULL; | |
1130 | } | |
1131 | ||
4ef3982a SH |
1132 | aio_context = bdrv_get_aio_context(bs); |
1133 | aio_context_acquire(aio_context); | |
1134 | ||
0b928854 SH |
1135 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
1136 | goto out_aio_context; | |
1137 | } | |
1138 | ||
44e3e053 | 1139 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
84d18f06 | 1140 | if (local_err) { |
44e3e053 | 1141 | error_propagate(errp, local_err); |
4ef3982a | 1142 | goto out_aio_context; |
44e3e053 WX |
1143 | } |
1144 | if (!ret) { | |
1145 | error_setg(errp, | |
1146 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1147 | "device '%s'", | |
1148 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
4ef3982a | 1149 | goto out_aio_context; |
44e3e053 WX |
1150 | } |
1151 | ||
1152 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1153 | if (local_err) { |
44e3e053 | 1154 | error_propagate(errp, local_err); |
4ef3982a | 1155 | goto out_aio_context; |
44e3e053 WX |
1156 | } |
1157 | ||
4ef3982a SH |
1158 | aio_context_release(aio_context); |
1159 | ||
5839e53b | 1160 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1161 | info->id = g_strdup(sn.id_str); |
1162 | info->name = g_strdup(sn.name); | |
1163 | info->date_nsec = sn.date_nsec; | |
1164 | info->date_sec = sn.date_sec; | |
1165 | info->vm_state_size = sn.vm_state_size; | |
1166 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1167 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1168 | ||
1169 | return info; | |
4ef3982a SH |
1170 | |
1171 | out_aio_context: | |
1172 | aio_context_release(aio_context); | |
1173 | return NULL; | |
44e3e053 | 1174 | } |
8802d1fd JC |
1175 | |
1176 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 1177 | |
ba5d6ab6 | 1178 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
1179 | |
1180 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
1181 | abort() will be called, clean() will always be called if it present. */ | |
1182 | typedef struct BdrvActionOps { | |
1183 | /* Size of state struct, in bytes. */ | |
1184 | size_t instance_size; | |
1185 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 1186 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 1187 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 1188 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 1189 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 1190 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 1191 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 1192 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
1193 | } BdrvActionOps; |
1194 | ||
1195 | /* | |
1196 | * This structure must be arranged as first member in child type, assuming | |
1197 | * that compiler will also arrange it to the same address with parent instance. | |
1198 | * Later it will be used in free(). | |
1199 | */ | |
ba5d6ab6 | 1200 | struct BlkTransactionState { |
c8a83e85 | 1201 | TransactionAction *action; |
ba0c86a3 | 1202 | const BdrvActionOps *ops; |
ba5d6ab6 | 1203 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
1204 | }; |
1205 | ||
bbe86010 WX |
1206 | /* internal snapshot private data */ |
1207 | typedef struct InternalSnapshotState { | |
1208 | BlkTransactionState common; | |
1209 | BlockDriverState *bs; | |
1210 | QEMUSnapshotInfo sn; | |
1211 | } InternalSnapshotState; | |
1212 | ||
1213 | static void internal_snapshot_prepare(BlkTransactionState *common, | |
1214 | Error **errp) | |
1215 | { | |
f70edf99 | 1216 | Error *local_err = NULL; |
bbe86010 WX |
1217 | const char *device; |
1218 | const char *name; | |
1219 | BlockDriverState *bs; | |
1220 | QEMUSnapshotInfo old_sn, *sn; | |
1221 | bool ret; | |
1222 | qemu_timeval tv; | |
1223 | BlockdevSnapshotInternal *internal; | |
1224 | InternalSnapshotState *state; | |
1225 | int ret1; | |
1226 | ||
1227 | g_assert(common->action->kind == | |
1228 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); | |
1229 | internal = common->action->blockdev_snapshot_internal_sync; | |
1230 | state = DO_UPCAST(InternalSnapshotState, common, common); | |
1231 | ||
1232 | /* 1. parse input */ | |
1233 | device = internal->device; | |
1234 | name = internal->name; | |
1235 | ||
1236 | /* 2. check for validation */ | |
1237 | bs = bdrv_find(device); | |
1238 | if (!bs) { | |
1239 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1240 | return; | |
1241 | } | |
1242 | ||
1243 | if (!bdrv_is_inserted(bs)) { | |
1244 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1245 | return; | |
1246 | } | |
1247 | ||
1248 | if (bdrv_is_read_only(bs)) { | |
1249 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1250 | return; | |
1251 | } | |
1252 | ||
1253 | if (!bdrv_can_snapshot(bs)) { | |
1254 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, | |
1255 | bs->drv->format_name, device, "internal snapshot"); | |
1256 | return; | |
1257 | } | |
1258 | ||
1259 | if (!strlen(name)) { | |
1260 | error_setg(errp, "Name is empty"); | |
1261 | return; | |
1262 | } | |
1263 | ||
1264 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1265 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1266 | &local_err); | |
1267 | if (local_err) { | |
1268 | error_propagate(errp, local_err); | |
bbe86010 WX |
1269 | return; |
1270 | } else if (ret) { | |
1271 | error_setg(errp, | |
1272 | "Snapshot with name '%s' already exists on device '%s'", | |
1273 | name, device); | |
1274 | return; | |
1275 | } | |
1276 | ||
1277 | /* 3. take the snapshot */ | |
1278 | sn = &state->sn; | |
1279 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1280 | qemu_gettimeofday(&tv); | |
1281 | sn->date_sec = tv.tv_sec; | |
1282 | sn->date_nsec = tv.tv_usec * 1000; | |
1283 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1284 | ||
1285 | ret1 = bdrv_snapshot_create(bs, sn); | |
1286 | if (ret1 < 0) { | |
1287 | error_setg_errno(errp, -ret1, | |
1288 | "Failed to create snapshot '%s' on device '%s'", | |
1289 | name, device); | |
1290 | return; | |
1291 | } | |
1292 | ||
1293 | /* 4. succeed, mark a snapshot is created */ | |
1294 | state->bs = bs; | |
1295 | } | |
1296 | ||
1297 | static void internal_snapshot_abort(BlkTransactionState *common) | |
1298 | { | |
1299 | InternalSnapshotState *state = | |
1300 | DO_UPCAST(InternalSnapshotState, common, common); | |
1301 | BlockDriverState *bs = state->bs; | |
1302 | QEMUSnapshotInfo *sn = &state->sn; | |
1303 | Error *local_error = NULL; | |
1304 | ||
1305 | if (!bs) { | |
1306 | return; | |
1307 | } | |
1308 | ||
1309 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1310 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1311 | "device '%s' in abort: %s", | |
1312 | sn->id_str, | |
1313 | sn->name, | |
1314 | bdrv_get_device_name(bs), | |
1315 | error_get_pretty(local_error)); | |
1316 | error_free(local_error); | |
1317 | } | |
1318 | } | |
1319 | ||
ba0c86a3 | 1320 | /* external snapshot private data */ |
ba5d6ab6 SH |
1321 | typedef struct ExternalSnapshotState { |
1322 | BlkTransactionState common; | |
8802d1fd JC |
1323 | BlockDriverState *old_bs; |
1324 | BlockDriverState *new_bs; | |
ba5d6ab6 | 1325 | } ExternalSnapshotState; |
8802d1fd | 1326 | |
ba5d6ab6 | 1327 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
1328 | Error **errp) |
1329 | { | |
9b9877ee WX |
1330 | BlockDriver *drv; |
1331 | int flags, ret; | |
0901f67e | 1332 | QDict *options = NULL; |
9b9877ee | 1333 | Error *local_err = NULL; |
0901f67e | 1334 | bool has_device = false; |
e2a31e87 | 1335 | const char *device; |
0901f67e BC |
1336 | bool has_node_name = false; |
1337 | const char *node_name; | |
1338 | bool has_snapshot_node_name = false; | |
1339 | const char *snapshot_node_name; | |
e2a31e87 WX |
1340 | const char *new_image_file; |
1341 | const char *format = "qcow2"; | |
1342 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
1343 | ExternalSnapshotState *state = |
1344 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1345 | TransactionAction *action = common->action; |
9b9877ee | 1346 | |
e2a31e87 | 1347 | /* get parameters */ |
c8a83e85 | 1348 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 | 1349 | |
0901f67e | 1350 | has_device = action->blockdev_snapshot_sync->has_device; |
e2a31e87 | 1351 | device = action->blockdev_snapshot_sync->device; |
0901f67e BC |
1352 | has_node_name = action->blockdev_snapshot_sync->has_node_name; |
1353 | node_name = action->blockdev_snapshot_sync->node_name; | |
1354 | has_snapshot_node_name = | |
1355 | action->blockdev_snapshot_sync->has_snapshot_node_name; | |
1356 | snapshot_node_name = action->blockdev_snapshot_sync->snapshot_node_name; | |
1357 | ||
e2a31e87 WX |
1358 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; |
1359 | if (action->blockdev_snapshot_sync->has_format) { | |
1360 | format = action->blockdev_snapshot_sync->format; | |
1361 | } | |
1362 | if (action->blockdev_snapshot_sync->has_mode) { | |
1363 | mode = action->blockdev_snapshot_sync->mode; | |
1364 | } | |
1365 | ||
1366 | /* start processing */ | |
9b9877ee WX |
1367 | drv = bdrv_find_format(format); |
1368 | if (!drv) { | |
1369 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1370 | return; | |
1371 | } | |
1372 | ||
0901f67e BC |
1373 | state->old_bs = bdrv_lookup_bs(has_device ? device : NULL, |
1374 | has_node_name ? node_name : NULL, | |
1375 | &local_err); | |
84d18f06 | 1376 | if (local_err) { |
0901f67e BC |
1377 | error_propagate(errp, local_err); |
1378 | return; | |
1379 | } | |
1380 | ||
1381 | if (has_node_name && !has_snapshot_node_name) { | |
1382 | error_setg(errp, "New snapshot node name missing"); | |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | if (has_snapshot_node_name && bdrv_find_node(snapshot_node_name)) { | |
1387 | error_setg(errp, "New snapshot node name already existing"); | |
9b9877ee WX |
1388 | return; |
1389 | } | |
1390 | ||
ba5d6ab6 | 1391 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
1392 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1393 | return; | |
1394 | } | |
1395 | ||
3718d8ab FZ |
1396 | if (bdrv_op_is_blocked(state->old_bs, |
1397 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1398 | return; |
1399 | } | |
1400 | ||
ba5d6ab6 SH |
1401 | if (!bdrv_is_read_only(state->old_bs)) { |
1402 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
1403 | error_set(errp, QERR_IO_ERROR); |
1404 | return; | |
1405 | } | |
1406 | } | |
1407 | ||
212a5a8f | 1408 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
f6186f49 BC |
1409 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); |
1410 | return; | |
1411 | } | |
1412 | ||
ba5d6ab6 | 1413 | flags = state->old_bs->open_flags; |
9b9877ee | 1414 | |
9b9877ee WX |
1415 | /* create new image w/backing file */ |
1416 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1417 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
1418 | state->old_bs->filename, |
1419 | state->old_bs->drv->format_name, | |
9b9877ee | 1420 | NULL, -1, flags, &local_err, false); |
84d18f06 | 1421 | if (local_err) { |
9b9877ee WX |
1422 | error_propagate(errp, local_err); |
1423 | return; | |
1424 | } | |
1425 | } | |
1426 | ||
0901f67e BC |
1427 | if (has_snapshot_node_name) { |
1428 | options = qdict_new(); | |
1429 | qdict_put(options, "node-name", | |
1430 | qstring_from_str(snapshot_node_name)); | |
1431 | } | |
1432 | ||
9b9877ee WX |
1433 | /* TODO Inherit bs->options or only take explicit options with an |
1434 | * extended QMP command? */ | |
f67503e5 | 1435 | assert(state->new_bs == NULL); |
ddf5636d | 1436 | ret = bdrv_open(&state->new_bs, new_image_file, NULL, options, |
34b5d2c6 | 1437 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
f67503e5 | 1438 | /* We will manually add the backing_hd field to the bs later */ |
9b9877ee | 1439 | if (ret != 0) { |
34b5d2c6 | 1440 | error_propagate(errp, local_err); |
9b9877ee WX |
1441 | } |
1442 | } | |
1443 | ||
ba5d6ab6 | 1444 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 1445 | { |
ba5d6ab6 SH |
1446 | ExternalSnapshotState *state = |
1447 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1448 | |
ba5d6ab6 SH |
1449 | /* This removes our old bs and adds the new bs */ |
1450 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1451 | /* We don't need (or want) to use the transactional |
1452 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1453 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 1454 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
1455 | NULL); |
1456 | } | |
1457 | ||
ba5d6ab6 | 1458 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1459 | { |
ba5d6ab6 SH |
1460 | ExternalSnapshotState *state = |
1461 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1462 | if (state->new_bs) { | |
4f6fd349 | 1463 | bdrv_unref(state->new_bs); |
96b86bf7 WX |
1464 | } |
1465 | } | |
1466 | ||
3037f364 SH |
1467 | typedef struct DriveBackupState { |
1468 | BlkTransactionState common; | |
1469 | BlockDriverState *bs; | |
1470 | BlockJob *job; | |
1471 | } DriveBackupState; | |
1472 | ||
1473 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1474 | { | |
1475 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1476 | DriveBackup *backup; | |
1477 | Error *local_err = NULL; | |
1478 | ||
1479 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1480 | backup = common->action->drive_backup; | |
1481 | ||
1482 | qmp_drive_backup(backup->device, backup->target, | |
1483 | backup->has_format, backup->format, | |
b53169ea | 1484 | backup->sync, |
3037f364 SH |
1485 | backup->has_mode, backup->mode, |
1486 | backup->has_speed, backup->speed, | |
1487 | backup->has_on_source_error, backup->on_source_error, | |
1488 | backup->has_on_target_error, backup->on_target_error, | |
1489 | &local_err); | |
84d18f06 | 1490 | if (local_err) { |
3037f364 SH |
1491 | error_propagate(errp, local_err); |
1492 | state->bs = NULL; | |
1493 | state->job = NULL; | |
1494 | return; | |
1495 | } | |
1496 | ||
1497 | state->bs = bdrv_find(backup->device); | |
1498 | state->job = state->bs->job; | |
1499 | } | |
1500 | ||
1501 | static void drive_backup_abort(BlkTransactionState *common) | |
1502 | { | |
1503 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1504 | BlockDriverState *bs = state->bs; | |
1505 | ||
1506 | /* Only cancel if it's the job we started */ | |
1507 | if (bs && bs->job && bs->job == state->job) { | |
1508 | block_job_cancel_sync(bs->job); | |
1509 | } | |
1510 | } | |
1511 | ||
78b18b78 SH |
1512 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1513 | { | |
1514 | error_setg(errp, "Transaction aborted using Abort action"); | |
1515 | } | |
1516 | ||
1517 | static void abort_commit(BlkTransactionState *common) | |
1518 | { | |
dfc6f865 | 1519 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1520 | } |
1521 | ||
ba0c86a3 | 1522 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1523 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1524 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1525 | .prepare = external_snapshot_prepare, |
1526 | .commit = external_snapshot_commit, | |
1527 | .abort = external_snapshot_abort, | |
1528 | }, | |
3037f364 SH |
1529 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1530 | .instance_size = sizeof(DriveBackupState), | |
1531 | .prepare = drive_backup_prepare, | |
1532 | .abort = drive_backup_abort, | |
1533 | }, | |
78b18b78 SH |
1534 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1535 | .instance_size = sizeof(BlkTransactionState), | |
1536 | .prepare = abort_prepare, | |
1537 | .commit = abort_commit, | |
1538 | }, | |
bbe86010 WX |
1539 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
1540 | .instance_size = sizeof(InternalSnapshotState), | |
1541 | .prepare = internal_snapshot_prepare, | |
1542 | .abort = internal_snapshot_abort, | |
1543 | }, | |
ba0c86a3 WX |
1544 | }; |
1545 | ||
8802d1fd JC |
1546 | /* |
1547 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1548 | * then we do not pivot any of the devices in the group, and abandon the | |
1549 | * snapshots | |
1550 | */ | |
c8a83e85 | 1551 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1552 | { |
c8a83e85 | 1553 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1554 | BlkTransactionState *state, *next; |
43e17041 | 1555 | Error *local_err = NULL; |
8802d1fd | 1556 | |
ba5d6ab6 | 1557 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1558 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1559 | ||
1560 | /* drain all i/o before any snapshots */ | |
1561 | bdrv_drain_all(); | |
1562 | ||
1563 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1564 | while (NULL != dev_entry) { | |
c8a83e85 | 1565 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1566 | const BdrvActionOps *ops; |
52e7c241 | 1567 | |
8802d1fd JC |
1568 | dev_info = dev_entry->value; |
1569 | dev_entry = dev_entry->next; | |
1570 | ||
ba0c86a3 WX |
1571 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1572 | ||
1573 | ops = &actions[dev_info->kind]; | |
aa3fe714 HR |
1574 | assert(ops->instance_size > 0); |
1575 | ||
ba5d6ab6 SH |
1576 | state = g_malloc0(ops->instance_size); |
1577 | state->ops = ops; | |
1578 | state->action = dev_info; | |
1579 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1580 | |
ba5d6ab6 | 1581 | state->ops->prepare(state, &local_err); |
84d18f06 | 1582 | if (local_err) { |
ba0c86a3 WX |
1583 | error_propagate(errp, local_err); |
1584 | goto delete_and_fail; | |
8802d1fd | 1585 | } |
8802d1fd JC |
1586 | } |
1587 | ||
ba5d6ab6 | 1588 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1589 | if (state->ops->commit) { |
1590 | state->ops->commit(state); | |
1591 | } | |
8802d1fd JC |
1592 | } |
1593 | ||
1594 | /* success */ | |
1595 | goto exit; | |
1596 | ||
1597 | delete_and_fail: | |
1598 | /* | |
1599 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1600 | * the original bs for all images | |
1601 | */ | |
ba5d6ab6 SH |
1602 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1603 | if (state->ops->abort) { | |
1604 | state->ops->abort(state); | |
ba0c86a3 | 1605 | } |
8802d1fd JC |
1606 | } |
1607 | exit: | |
ba5d6ab6 SH |
1608 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1609 | if (state->ops->clean) { | |
1610 | state->ops->clean(state); | |
ba0c86a3 | 1611 | } |
ba5d6ab6 | 1612 | g_free(state); |
8802d1fd | 1613 | } |
8802d1fd JC |
1614 | } |
1615 | ||
1616 | ||
6007cdd4 | 1617 | static void eject_device(BlockBackend *blk, int force, Error **errp) |
666daa68 | 1618 | { |
6007cdd4 MA |
1619 | BlockDriverState *bs = blk_bs(blk); |
1620 | ||
3718d8ab | 1621 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
2d3735d3 SH |
1622 | return; |
1623 | } | |
a7f53e26 | 1624 | if (!blk_dev_has_removable_media(blk)) { |
f231b88d CR |
1625 | error_setg(errp, "Device '%s' is not removable", |
1626 | bdrv_get_device_name(bs)); | |
92d48558 | 1627 | return; |
ea8f942f | 1628 | } |
92d48558 | 1629 | |
a7f53e26 MA |
1630 | if (blk_dev_is_medium_locked(blk) && !blk_dev_is_tray_open(blk)) { |
1631 | blk_dev_eject_request(blk, force); | |
025ccaa7 | 1632 | if (!force) { |
f231b88d CR |
1633 | error_setg(errp, "Device '%s' is locked", |
1634 | bdrv_get_device_name(bs)); | |
92d48558 | 1635 | return; |
025ccaa7 | 1636 | } |
666daa68 | 1637 | } |
92d48558 | 1638 | |
3b5276b5 | 1639 | bdrv_close(bs); |
666daa68 MA |
1640 | } |
1641 | ||
c245b6a3 | 1642 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 | 1643 | { |
6007cdd4 | 1644 | BlockBackend *blk; |
666daa68 | 1645 | |
6007cdd4 MA |
1646 | blk = blk_by_name(device); |
1647 | if (!blk) { | |
c245b6a3 LC |
1648 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1649 | return; | |
92d48558 LC |
1650 | } |
1651 | ||
6007cdd4 | 1652 | eject_device(blk, force, errp); |
666daa68 MA |
1653 | } |
1654 | ||
12d3ba82 BC |
1655 | void qmp_block_passwd(bool has_device, const char *device, |
1656 | bool has_node_name, const char *node_name, | |
1657 | const char *password, Error **errp) | |
666daa68 | 1658 | { |
12d3ba82 | 1659 | Error *local_err = NULL; |
666daa68 MA |
1660 | BlockDriverState *bs; |
1661 | int err; | |
1662 | ||
12d3ba82 BC |
1663 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1664 | has_node_name ? node_name : NULL, | |
1665 | &local_err); | |
84d18f06 | 1666 | if (local_err) { |
12d3ba82 | 1667 | error_propagate(errp, local_err); |
a4dea8a9 | 1668 | return; |
666daa68 MA |
1669 | } |
1670 | ||
a4dea8a9 | 1671 | err = bdrv_set_key(bs, password); |
666daa68 | 1672 | if (err == -EINVAL) { |
a4dea8a9 LC |
1673 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1674 | return; | |
666daa68 | 1675 | } else if (err < 0) { |
a4dea8a9 LC |
1676 | error_set(errp, QERR_INVALID_PASSWORD); |
1677 | return; | |
666daa68 | 1678 | } |
666daa68 MA |
1679 | } |
1680 | ||
333a96ec LC |
1681 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1682 | int bdrv_flags, BlockDriver *drv, | |
1683 | const char *password, Error **errp) | |
1684 | { | |
34b5d2c6 | 1685 | Error *local_err = NULL; |
0eef407c LC |
1686 | int ret; |
1687 | ||
ddf5636d | 1688 | ret = bdrv_open(&bs, filename, NULL, NULL, bdrv_flags, drv, &local_err); |
0eef407c | 1689 | if (ret < 0) { |
34b5d2c6 | 1690 | error_propagate(errp, local_err); |
333a96ec LC |
1691 | return; |
1692 | } | |
1693 | ||
1694 | if (bdrv_key_required(bs)) { | |
1695 | if (password) { | |
1696 | if (bdrv_set_key(bs, password) < 0) { | |
1697 | error_set(errp, QERR_INVALID_PASSWORD); | |
1698 | } | |
1699 | } else { | |
1700 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1701 | bdrv_get_encrypted_filename(bs)); | |
1702 | } | |
1703 | } else if (password) { | |
1704 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | void qmp_change_blockdev(const char *device, const char *filename, | |
314f7ea7 | 1709 | const char *format, Error **errp) |
666daa68 | 1710 | { |
6007cdd4 | 1711 | BlockBackend *blk; |
666daa68 MA |
1712 | BlockDriverState *bs; |
1713 | BlockDriver *drv = NULL; | |
1714 | int bdrv_flags; | |
92d48558 | 1715 | Error *err = NULL; |
666daa68 | 1716 | |
6007cdd4 MA |
1717 | blk = blk_by_name(device); |
1718 | if (!blk) { | |
333a96ec LC |
1719 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1720 | return; | |
666daa68 | 1721 | } |
6007cdd4 | 1722 | bs = blk_bs(blk); |
333a96ec LC |
1723 | |
1724 | if (format) { | |
b64ec4e4 | 1725 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1726 | if (!drv) { |
333a96ec LC |
1727 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1728 | return; | |
666daa68 MA |
1729 | } |
1730 | } | |
333a96ec | 1731 | |
6007cdd4 | 1732 | eject_device(blk, 0, &err); |
84d18f06 | 1733 | if (err) { |
333a96ec LC |
1734 | error_propagate(errp, err); |
1735 | return; | |
666daa68 | 1736 | } |
333a96ec | 1737 | |
528f7663 | 1738 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1739 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1740 | |
1741 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1742 | } |
9063f814 | 1743 | |
727f005e | 1744 | /* throttling disk I/O limits */ |
80047da5 | 1745 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1746 | int64_t bps_wr, |
1747 | int64_t iops, | |
1748 | int64_t iops_rd, | |
1749 | int64_t iops_wr, | |
1750 | bool has_bps_max, | |
1751 | int64_t bps_max, | |
1752 | bool has_bps_rd_max, | |
1753 | int64_t bps_rd_max, | |
1754 | bool has_bps_wr_max, | |
1755 | int64_t bps_wr_max, | |
1756 | bool has_iops_max, | |
1757 | int64_t iops_max, | |
1758 | bool has_iops_rd_max, | |
1759 | int64_t iops_rd_max, | |
1760 | bool has_iops_wr_max, | |
2024c1df BC |
1761 | int64_t iops_wr_max, |
1762 | bool has_iops_size, | |
1763 | int64_t iops_size, Error **errp) | |
727f005e | 1764 | { |
cc0681c4 | 1765 | ThrottleConfig cfg; |
727f005e | 1766 | BlockDriverState *bs; |
b15446fd | 1767 | AioContext *aio_context; |
727f005e | 1768 | |
80047da5 | 1769 | bs = bdrv_find(device); |
727f005e | 1770 | if (!bs) { |
80047da5 LC |
1771 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1772 | return; | |
727f005e ZYW |
1773 | } |
1774 | ||
cc0681c4 BC |
1775 | memset(&cfg, 0, sizeof(cfg)); |
1776 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1777 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1778 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1779 | ||
1780 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1781 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1782 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1783 | ||
3e9fab69 BC |
1784 | if (has_bps_max) { |
1785 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1786 | } | |
1787 | if (has_bps_rd_max) { | |
1788 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1789 | } | |
1790 | if (has_bps_wr_max) { | |
1791 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1792 | } | |
1793 | if (has_iops_max) { | |
1794 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1795 | } | |
1796 | if (has_iops_rd_max) { | |
1797 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1798 | } | |
1799 | if (has_iops_wr_max) { | |
1800 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1801 | } | |
727f005e | 1802 | |
2024c1df BC |
1803 | if (has_iops_size) { |
1804 | cfg.op_size = iops_size; | |
1805 | } | |
cc0681c4 BC |
1806 | |
1807 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1808 | return; |
727f005e ZYW |
1809 | } |
1810 | ||
b15446fd SH |
1811 | aio_context = bdrv_get_aio_context(bs); |
1812 | aio_context_acquire(aio_context); | |
1813 | ||
cc0681c4 | 1814 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1815 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1816 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1817 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1818 | } |
1819 | ||
1820 | if (bs->io_limits_enabled) { | |
1821 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1822 | } |
b15446fd SH |
1823 | |
1824 | aio_context_release(aio_context); | |
727f005e ZYW |
1825 | } |
1826 | ||
9063f814 RH |
1827 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1828 | { | |
1829 | const char *id = qdict_get_str(qdict, "id"); | |
7e7d56d9 | 1830 | BlockBackend *blk; |
9063f814 | 1831 | BlockDriverState *bs; |
8ad4202b | 1832 | AioContext *aio_context; |
3718d8ab | 1833 | Error *local_err = NULL; |
9063f814 | 1834 | |
7e7d56d9 MA |
1835 | blk = blk_by_name(id); |
1836 | if (!blk) { | |
b1422f20 | 1837 | error_report("Device '%s' not found", id); |
9063f814 RH |
1838 | return -1; |
1839 | } | |
7e7d56d9 | 1840 | bs = blk_bs(blk); |
8ad4202b | 1841 | |
26f8b3a8 | 1842 | if (!blk_legacy_dinfo(blk)) { |
48f364dd MA |
1843 | error_report("Deleting device added with blockdev-add" |
1844 | " is not supported"); | |
1845 | return -1; | |
1846 | } | |
1847 | ||
8ad4202b SH |
1848 | aio_context = bdrv_get_aio_context(bs); |
1849 | aio_context_acquire(aio_context); | |
1850 | ||
3718d8ab FZ |
1851 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
1852 | error_report("%s", error_get_pretty(local_err)); | |
1853 | error_free(local_err); | |
8ad4202b | 1854 | aio_context_release(aio_context); |
8591675f MT |
1855 | return -1; |
1856 | } | |
9063f814 RH |
1857 | |
1858 | /* quiesce block driver; prevent further io */ | |
922453bc | 1859 | bdrv_drain_all(); |
9063f814 RH |
1860 | bdrv_flush(bs); |
1861 | bdrv_close(bs); | |
1862 | ||
fa879d62 | 1863 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1864 | * then we need to make the drive anonymous until the device |
1865 | * can be removed. If this is a drive with no device backing | |
1866 | * then we can just get rid of the block driver state right here. | |
1867 | */ | |
a7f53e26 | 1868 | if (blk_get_attached_dev(blk)) { |
7e7d56d9 | 1869 | blk_hide_on_behalf_of_do_drive_del(blk); |
293c51a6 SH |
1870 | /* Further I/O must not pause the guest */ |
1871 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1872 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 1873 | } else { |
b9fe8a7a | 1874 | blk_unref(blk); |
9063f814 RH |
1875 | } |
1876 | ||
8ad4202b | 1877 | aio_context_release(aio_context); |
9063f814 RH |
1878 | return 0; |
1879 | } | |
6d4a2b3a | 1880 | |
3b1dbd11 BC |
1881 | void qmp_block_resize(bool has_device, const char *device, |
1882 | bool has_node_name, const char *node_name, | |
1883 | int64_t size, Error **errp) | |
6d4a2b3a | 1884 | { |
3b1dbd11 | 1885 | Error *local_err = NULL; |
6d4a2b3a | 1886 | BlockDriverState *bs; |
927e0e76 | 1887 | AioContext *aio_context; |
8732901e | 1888 | int ret; |
6d4a2b3a | 1889 | |
3b1dbd11 BC |
1890 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1891 | has_node_name ? node_name : NULL, | |
1892 | &local_err); | |
84d18f06 | 1893 | if (local_err) { |
3b1dbd11 BC |
1894 | error_propagate(errp, local_err); |
1895 | return; | |
1896 | } | |
1897 | ||
927e0e76 SH |
1898 | aio_context = bdrv_get_aio_context(bs); |
1899 | aio_context_acquire(aio_context); | |
1900 | ||
3b1dbd11 BC |
1901 | if (!bdrv_is_first_non_filter(bs)) { |
1902 | error_set(errp, QERR_FEATURE_DISABLED, "resize"); | |
927e0e76 | 1903 | goto out; |
6d4a2b3a CH |
1904 | } |
1905 | ||
1906 | if (size < 0) { | |
939a1cc3 | 1907 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 1908 | goto out; |
6d4a2b3a CH |
1909 | } |
1910 | ||
9c75e168 JC |
1911 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
1912 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
927e0e76 | 1913 | goto out; |
9c75e168 JC |
1914 | } |
1915 | ||
92b7a08d PL |
1916 | /* complete all in-flight operations before resizing the device */ |
1917 | bdrv_drain_all(); | |
1918 | ||
8732901e KW |
1919 | ret = bdrv_truncate(bs, size); |
1920 | switch (ret) { | |
939a1cc3 SH |
1921 | case 0: |
1922 | break; | |
1923 | case -ENOMEDIUM: | |
1924 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1925 | break; | |
1926 | case -ENOTSUP: | |
1927 | error_set(errp, QERR_UNSUPPORTED); | |
1928 | break; | |
1929 | case -EACCES: | |
1930 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1931 | break; | |
1932 | case -EBUSY: | |
1933 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1934 | break; | |
1935 | default: | |
8732901e | 1936 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1937 | break; |
6d4a2b3a | 1938 | } |
927e0e76 SH |
1939 | |
1940 | out: | |
1941 | aio_context_release(aio_context); | |
6d4a2b3a | 1942 | } |
12bd451f | 1943 | |
9abf2dba | 1944 | static void block_job_cb(void *opaque, int ret) |
12bd451f | 1945 | { |
723c5d93 SH |
1946 | /* Note that this function may be executed from another AioContext besides |
1947 | * the QEMU main loop. If you need to access anything that assumes the | |
1948 | * QEMU global mutex, use a BH or introduce a mutex. | |
1949 | */ | |
1950 | ||
12bd451f | 1951 | BlockDriverState *bs = opaque; |
bcada37b | 1952 | const char *msg = NULL; |
12bd451f | 1953 | |
9abf2dba | 1954 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1955 | |
1956 | assert(bs->job); | |
bcada37b | 1957 | |
12bd451f | 1958 | if (ret < 0) { |
bcada37b | 1959 | msg = strerror(-ret); |
12bd451f SH |
1960 | } |
1961 | ||
370521a1 | 1962 | if (block_job_is_cancelled(bs->job)) { |
bcada37b | 1963 | block_job_event_cancelled(bs->job); |
370521a1 | 1964 | } else { |
bcada37b | 1965 | block_job_event_completed(bs->job, msg); |
370521a1 | 1966 | } |
aa398a5c | 1967 | |
fa510ebf | 1968 | bdrv_put_ref_bh_schedule(bs); |
12bd451f SH |
1969 | } |
1970 | ||
13d8cc51 JC |
1971 | void qmp_block_stream(const char *device, |
1972 | bool has_base, const char *base, | |
1973 | bool has_backing_file, const char *backing_file, | |
1974 | bool has_speed, int64_t speed, | |
1d809098 PB |
1975 | bool has_on_error, BlockdevOnError on_error, |
1976 | Error **errp) | |
12bd451f SH |
1977 | { |
1978 | BlockDriverState *bs; | |
c8c3080f | 1979 | BlockDriverState *base_bs = NULL; |
f3e69beb | 1980 | AioContext *aio_context; |
fd7f8c65 | 1981 | Error *local_err = NULL; |
13d8cc51 | 1982 | const char *base_name = NULL; |
12bd451f | 1983 | |
1d809098 PB |
1984 | if (!has_on_error) { |
1985 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1986 | } | |
1987 | ||
12bd451f SH |
1988 | bs = bdrv_find(device); |
1989 | if (!bs) { | |
1990 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1991 | return; | |
1992 | } | |
1993 | ||
f3e69beb SH |
1994 | aio_context = bdrv_get_aio_context(bs); |
1995 | aio_context_acquire(aio_context); | |
1996 | ||
628ff683 | 1997 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
f3e69beb | 1998 | goto out; |
628ff683 FZ |
1999 | } |
2000 | ||
13d8cc51 | 2001 | if (has_base) { |
c8c3080f MT |
2002 | base_bs = bdrv_find_backing_image(bs, base); |
2003 | if (base_bs == NULL) { | |
2004 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
f3e69beb | 2005 | goto out; |
c8c3080f | 2006 | } |
f3e69beb | 2007 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
13d8cc51 | 2008 | base_name = base; |
12bd451f SH |
2009 | } |
2010 | ||
13d8cc51 JC |
2011 | /* if we are streaming the entire chain, the result will have no backing |
2012 | * file, and specifying one is therefore an error */ | |
2013 | if (base_bs == NULL && has_backing_file) { | |
2014 | error_setg(errp, "backing file specified, but streaming the " | |
2015 | "entire chain"); | |
f3e69beb | 2016 | goto out; |
13d8cc51 JC |
2017 | } |
2018 | ||
2019 | /* backing_file string overrides base bs filename */ | |
2020 | base_name = has_backing_file ? backing_file : base_name; | |
2021 | ||
2022 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, | |
1d809098 | 2023 | on_error, block_job_cb, bs, &local_err); |
84d18f06 | 2024 | if (local_err) { |
fd7f8c65 | 2025 | error_propagate(errp, local_err); |
f3e69beb | 2026 | goto out; |
12bd451f SH |
2027 | } |
2028 | ||
2029 | trace_qmp_block_stream(bs, bs->job); | |
f3e69beb SH |
2030 | |
2031 | out: | |
2032 | aio_context_release(aio_context); | |
12bd451f | 2033 | } |
2d47c6e9 | 2034 | |
ed61fc10 | 2035 | void qmp_block_commit(const char *device, |
7676e2c5 JC |
2036 | bool has_base, const char *base, |
2037 | bool has_top, const char *top, | |
54e26900 | 2038 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
2039 | bool has_speed, int64_t speed, |
2040 | Error **errp) | |
2041 | { | |
2042 | BlockDriverState *bs; | |
2043 | BlockDriverState *base_bs, *top_bs; | |
9e85cd5c | 2044 | AioContext *aio_context; |
ed61fc10 JC |
2045 | Error *local_err = NULL; |
2046 | /* This will be part of the QMP command, if/when the | |
2047 | * BlockdevOnError change for blkmirror makes it in | |
2048 | */ | |
92aa5c6d | 2049 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 2050 | |
54504663 HR |
2051 | if (!has_speed) { |
2052 | speed = 0; | |
2053 | } | |
2054 | ||
7676e2c5 JC |
2055 | /* Important Note: |
2056 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
2057 | * live commit feature versions; for this to work, we must make sure to | |
2058 | * perform the device lookup before any generic errors that may occur in a | |
2059 | * scenario in which all optional arguments are omitted. */ | |
ed61fc10 JC |
2060 | bs = bdrv_find(device); |
2061 | if (!bs) { | |
2062 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2063 | return; | |
628ff683 FZ |
2064 | } |
2065 | ||
9e85cd5c SH |
2066 | aio_context = bdrv_get_aio_context(bs); |
2067 | aio_context_acquire(aio_context); | |
2068 | ||
2069 | /* drain all i/o before commits */ | |
2070 | bdrv_drain_all(); | |
2071 | ||
628ff683 | 2072 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT, errp)) { |
9e85cd5c | 2073 | goto out; |
ed61fc10 | 2074 | } |
ed61fc10 JC |
2075 | |
2076 | /* default top_bs is the active layer */ | |
2077 | top_bs = bs; | |
2078 | ||
7676e2c5 | 2079 | if (has_top && top) { |
ed61fc10 JC |
2080 | if (strcmp(bs->filename, top) != 0) { |
2081 | top_bs = bdrv_find_backing_image(bs, top); | |
2082 | } | |
2083 | } | |
2084 | ||
2085 | if (top_bs == NULL) { | |
2086 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
9e85cd5c | 2087 | goto out; |
ed61fc10 JC |
2088 | } |
2089 | ||
9e85cd5c SH |
2090 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
2091 | ||
d5208c45 JC |
2092 | if (has_base && base) { |
2093 | base_bs = bdrv_find_backing_image(top_bs, base); | |
2094 | } else { | |
2095 | base_bs = bdrv_find_base(top_bs); | |
2096 | } | |
2097 | ||
2098 | if (base_bs == NULL) { | |
2099 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
9e85cd5c | 2100 | goto out; |
d5208c45 JC |
2101 | } |
2102 | ||
9e85cd5c SH |
2103 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
2104 | ||
7676e2c5 JC |
2105 | /* Do not allow attempts to commit an image into itself */ |
2106 | if (top_bs == base_bs) { | |
2107 | error_setg(errp, "cannot commit an image into itself"); | |
9e85cd5c | 2108 | goto out; |
7676e2c5 JC |
2109 | } |
2110 | ||
20a63d2c | 2111 | if (top_bs == bs) { |
54e26900 JC |
2112 | if (has_backing_file) { |
2113 | error_setg(errp, "'backing-file' specified," | |
2114 | " but 'top' is the active layer"); | |
9e85cd5c | 2115 | goto out; |
54e26900 | 2116 | } |
20a63d2c FZ |
2117 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
2118 | bs, &local_err); | |
2119 | } else { | |
2120 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, | |
54e26900 | 2121 | has_backing_file ? backing_file : NULL, &local_err); |
20a63d2c | 2122 | } |
ed61fc10 JC |
2123 | if (local_err != NULL) { |
2124 | error_propagate(errp, local_err); | |
9e85cd5c | 2125 | goto out; |
ed61fc10 | 2126 | } |
9e85cd5c SH |
2127 | |
2128 | out: | |
2129 | aio_context_release(aio_context); | |
ed61fc10 JC |
2130 | } |
2131 | ||
99a9addf SH |
2132 | void qmp_drive_backup(const char *device, const char *target, |
2133 | bool has_format, const char *format, | |
b53169ea | 2134 | enum MirrorSyncMode sync, |
99a9addf SH |
2135 | bool has_mode, enum NewImageMode mode, |
2136 | bool has_speed, int64_t speed, | |
2137 | bool has_on_source_error, BlockdevOnError on_source_error, | |
2138 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2139 | Error **errp) | |
2140 | { | |
2141 | BlockDriverState *bs; | |
2142 | BlockDriverState *target_bs; | |
fc5d3f84 | 2143 | BlockDriverState *source = NULL; |
761731b1 | 2144 | AioContext *aio_context; |
99a9addf SH |
2145 | BlockDriver *drv = NULL; |
2146 | Error *local_err = NULL; | |
2147 | int flags; | |
2148 | int64_t size; | |
2149 | int ret; | |
2150 | ||
2151 | if (!has_speed) { | |
2152 | speed = 0; | |
2153 | } | |
2154 | if (!has_on_source_error) { | |
2155 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2156 | } | |
2157 | if (!has_on_target_error) { | |
2158 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2159 | } | |
2160 | if (!has_mode) { | |
2161 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2162 | } | |
2163 | ||
2164 | bs = bdrv_find(device); | |
2165 | if (!bs) { | |
2166 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2167 | return; | |
2168 | } | |
2169 | ||
761731b1 SH |
2170 | aio_context = bdrv_get_aio_context(bs); |
2171 | aio_context_acquire(aio_context); | |
2172 | ||
99a9addf SH |
2173 | if (!bdrv_is_inserted(bs)) { |
2174 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
761731b1 | 2175 | goto out; |
99a9addf SH |
2176 | } |
2177 | ||
2178 | if (!has_format) { | |
2179 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2180 | } | |
2181 | if (format) { | |
2182 | drv = bdrv_find_format(format); | |
2183 | if (!drv) { | |
2184 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
761731b1 | 2185 | goto out; |
99a9addf SH |
2186 | } |
2187 | } | |
2188 | ||
3718d8ab | 2189 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
761731b1 | 2190 | goto out; |
99a9addf SH |
2191 | } |
2192 | ||
2193 | flags = bs->open_flags | BDRV_O_RDWR; | |
2194 | ||
fc5d3f84 IM |
2195 | /* See if we have a backing HD we can use to create our new image |
2196 | * on top of. */ | |
2197 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
2198 | source = bs->backing_hd; | |
2199 | if (!source) { | |
2200 | sync = MIRROR_SYNC_MODE_FULL; | |
2201 | } | |
2202 | } | |
2203 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
2204 | source = bs; | |
2205 | } | |
2206 | ||
99a9addf SH |
2207 | size = bdrv_getlength(bs); |
2208 | if (size < 0) { | |
2209 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
761731b1 | 2210 | goto out; |
99a9addf SH |
2211 | } |
2212 | ||
2213 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
2214 | assert(format && drv); | |
fc5d3f84 IM |
2215 | if (source) { |
2216 | bdrv_img_create(target, format, source->filename, | |
2217 | source->drv->format_name, NULL, | |
2218 | size, flags, &local_err, false); | |
2219 | } else { | |
2220 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
2221 | size, flags, &local_err, false); | |
2222 | } | |
99a9addf SH |
2223 | } |
2224 | ||
84d18f06 | 2225 | if (local_err) { |
99a9addf | 2226 | error_propagate(errp, local_err); |
761731b1 | 2227 | goto out; |
99a9addf SH |
2228 | } |
2229 | ||
f67503e5 | 2230 | target_bs = NULL; |
ddf5636d | 2231 | ret = bdrv_open(&target_bs, target, NULL, NULL, flags, drv, &local_err); |
99a9addf | 2232 | if (ret < 0) { |
34b5d2c6 | 2233 | error_propagate(errp, local_err); |
761731b1 | 2234 | goto out; |
99a9addf SH |
2235 | } |
2236 | ||
761731b1 SH |
2237 | bdrv_set_aio_context(target_bs, aio_context); |
2238 | ||
fc5d3f84 | 2239 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
2240 | block_job_cb, bs, &local_err); |
2241 | if (local_err != NULL) { | |
4f6fd349 | 2242 | bdrv_unref(target_bs); |
99a9addf | 2243 | error_propagate(errp, local_err); |
761731b1 | 2244 | goto out; |
99a9addf | 2245 | } |
761731b1 SH |
2246 | |
2247 | out: | |
2248 | aio_context_release(aio_context); | |
99a9addf SH |
2249 | } |
2250 | ||
c13163fb BC |
2251 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
2252 | { | |
2253 | return bdrv_named_nodes_list(); | |
2254 | } | |
2255 | ||
08e4ed6c PB |
2256 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
2257 | ||
d9b902db PB |
2258 | void qmp_drive_mirror(const char *device, const char *target, |
2259 | bool has_format, const char *format, | |
4c828dc6 | 2260 | bool has_node_name, const char *node_name, |
09158f00 | 2261 | bool has_replaces, const char *replaces, |
d9b902db PB |
2262 | enum MirrorSyncMode sync, |
2263 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 2264 | bool has_speed, int64_t speed, |
eee13dfe | 2265 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 2266 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
2267 | bool has_on_source_error, BlockdevOnError on_source_error, |
2268 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2269 | Error **errp) | |
d9b902db | 2270 | { |
d9b902db PB |
2271 | BlockDriverState *bs; |
2272 | BlockDriverState *source, *target_bs; | |
5a7e7a0b | 2273 | AioContext *aio_context; |
d9b902db PB |
2274 | BlockDriver *drv = NULL; |
2275 | Error *local_err = NULL; | |
4c828dc6 | 2276 | QDict *options = NULL; |
d9b902db | 2277 | int flags; |
ac3c5d83 | 2278 | int64_t size; |
d9b902db PB |
2279 | int ret; |
2280 | ||
2281 | if (!has_speed) { | |
2282 | speed = 0; | |
2283 | } | |
b952b558 PB |
2284 | if (!has_on_source_error) { |
2285 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2286 | } | |
2287 | if (!has_on_target_error) { | |
2288 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2289 | } | |
d9b902db PB |
2290 | if (!has_mode) { |
2291 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2292 | } | |
eee13dfe PB |
2293 | if (!has_granularity) { |
2294 | granularity = 0; | |
2295 | } | |
08e4ed6c PB |
2296 | if (!has_buf_size) { |
2297 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
2298 | } | |
2299 | ||
eee13dfe | 2300 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
3cbbe9fd SH |
2301 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
2302 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
2303 | return; |
2304 | } | |
2305 | if (granularity & (granularity - 1)) { | |
3cbbe9fd | 2306 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", "power of 2"); |
eee13dfe PB |
2307 | return; |
2308 | } | |
d9b902db PB |
2309 | |
2310 | bs = bdrv_find(device); | |
2311 | if (!bs) { | |
2312 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2313 | return; | |
2314 | } | |
2315 | ||
5a7e7a0b SH |
2316 | aio_context = bdrv_get_aio_context(bs); |
2317 | aio_context_acquire(aio_context); | |
2318 | ||
d9b902db PB |
2319 | if (!bdrv_is_inserted(bs)) { |
2320 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
5a7e7a0b | 2321 | goto out; |
d9b902db PB |
2322 | } |
2323 | ||
2324 | if (!has_format) { | |
2325 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2326 | } | |
2327 | if (format) { | |
2328 | drv = bdrv_find_format(format); | |
2329 | if (!drv) { | |
2330 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
5a7e7a0b | 2331 | goto out; |
d9b902db PB |
2332 | } |
2333 | } | |
2334 | ||
3718d8ab | 2335 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) { |
5a7e7a0b | 2336 | goto out; |
d9b902db PB |
2337 | } |
2338 | ||
2339 | flags = bs->open_flags | BDRV_O_RDWR; | |
2340 | source = bs->backing_hd; | |
2341 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
2342 | sync = MIRROR_SYNC_MODE_FULL; | |
2343 | } | |
117e0c82 HR |
2344 | if (sync == MIRROR_SYNC_MODE_NONE) { |
2345 | source = bs; | |
2346 | } | |
d9b902db | 2347 | |
ac3c5d83 SH |
2348 | size = bdrv_getlength(bs); |
2349 | if (size < 0) { | |
2350 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
5a7e7a0b | 2351 | goto out; |
ac3c5d83 SH |
2352 | } |
2353 | ||
09158f00 BC |
2354 | if (has_replaces) { |
2355 | BlockDriverState *to_replace_bs; | |
5a7e7a0b SH |
2356 | AioContext *replace_aio_context; |
2357 | int64_t replace_size; | |
09158f00 BC |
2358 | |
2359 | if (!has_node_name) { | |
2360 | error_setg(errp, "a node-name must be provided when replacing a" | |
2361 | " named node of the graph"); | |
5a7e7a0b | 2362 | goto out; |
09158f00 BC |
2363 | } |
2364 | ||
2365 | to_replace_bs = check_to_replace_node(replaces, &local_err); | |
2366 | ||
2367 | if (!to_replace_bs) { | |
2368 | error_propagate(errp, local_err); | |
5a7e7a0b | 2369 | goto out; |
09158f00 BC |
2370 | } |
2371 | ||
5a7e7a0b SH |
2372 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
2373 | aio_context_acquire(replace_aio_context); | |
2374 | replace_size = bdrv_getlength(to_replace_bs); | |
2375 | aio_context_release(replace_aio_context); | |
2376 | ||
2377 | if (size != replace_size) { | |
09158f00 BC |
2378 | error_setg(errp, "cannot replace image with a mirror image of " |
2379 | "different size"); | |
5a7e7a0b | 2380 | goto out; |
09158f00 BC |
2381 | } |
2382 | } | |
2383 | ||
14526864 HR |
2384 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
2385 | && mode != NEW_IMAGE_MODE_EXISTING) | |
2386 | { | |
d9b902db PB |
2387 | /* create new image w/o backing file */ |
2388 | assert(format && drv); | |
cf8f2426 | 2389 | bdrv_img_create(target, format, |
f382d43a | 2390 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
2391 | } else { |
2392 | switch (mode) { | |
2393 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
2394 | break; |
2395 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
2396 | /* create new image with backing file */ | |
cf8f2426 LC |
2397 | bdrv_img_create(target, format, |
2398 | source->filename, | |
2399 | source->drv->format_name, | |
f382d43a | 2400 | NULL, size, flags, &local_err, false); |
d9b902db PB |
2401 | break; |
2402 | default: | |
2403 | abort(); | |
2404 | } | |
2405 | } | |
2406 | ||
84d18f06 | 2407 | if (local_err) { |
cf8f2426 | 2408 | error_propagate(errp, local_err); |
5a7e7a0b | 2409 | goto out; |
d9b902db PB |
2410 | } |
2411 | ||
4c828dc6 BC |
2412 | if (has_node_name) { |
2413 | options = qdict_new(); | |
2414 | qdict_put(options, "node-name", qstring_from_str(node_name)); | |
2415 | } | |
2416 | ||
b812f671 PB |
2417 | /* Mirroring takes care of copy-on-write using the source's backing |
2418 | * file. | |
2419 | */ | |
f67503e5 | 2420 | target_bs = NULL; |
4c828dc6 BC |
2421 | ret = bdrv_open(&target_bs, target, NULL, options, |
2422 | flags | BDRV_O_NO_BACKING, drv, &local_err); | |
d9b902db | 2423 | if (ret < 0) { |
34b5d2c6 | 2424 | error_propagate(errp, local_err); |
5a7e7a0b | 2425 | goto out; |
d9b902db PB |
2426 | } |
2427 | ||
5a7e7a0b SH |
2428 | bdrv_set_aio_context(target_bs, aio_context); |
2429 | ||
09158f00 BC |
2430 | /* pass the node name to replace to mirror start since it's loose coupling |
2431 | * and will allow to check whether the node still exist at mirror completion | |
2432 | */ | |
2433 | mirror_start(bs, target_bs, | |
2434 | has_replaces ? replaces : NULL, | |
2435 | speed, granularity, buf_size, sync, | |
eee13dfe | 2436 | on_source_error, on_target_error, |
b952b558 | 2437 | block_job_cb, bs, &local_err); |
d9b902db | 2438 | if (local_err != NULL) { |
4f6fd349 | 2439 | bdrv_unref(target_bs); |
d9b902db | 2440 | error_propagate(errp, local_err); |
5a7e7a0b | 2441 | goto out; |
d9b902db | 2442 | } |
5a7e7a0b SH |
2443 | |
2444 | out: | |
2445 | aio_context_release(aio_context); | |
d9b902db PB |
2446 | } |
2447 | ||
3d948cdf SH |
2448 | /* Get the block job for a given device name and acquire its AioContext */ |
2449 | static BlockJob *find_block_job(const char *device, AioContext **aio_context) | |
2d47c6e9 SH |
2450 | { |
2451 | BlockDriverState *bs; | |
2452 | ||
2453 | bs = bdrv_find(device); | |
3d948cdf SH |
2454 | if (!bs) { |
2455 | goto notfound; | |
2456 | } | |
2457 | ||
2458 | *aio_context = bdrv_get_aio_context(bs); | |
2459 | aio_context_acquire(*aio_context); | |
2460 | ||
2461 | if (!bs->job) { | |
2462 | aio_context_release(*aio_context); | |
2463 | goto notfound; | |
2d47c6e9 | 2464 | } |
3d948cdf | 2465 | |
2d47c6e9 | 2466 | return bs->job; |
3d948cdf SH |
2467 | |
2468 | notfound: | |
2469 | *aio_context = NULL; | |
2470 | return NULL; | |
2d47c6e9 SH |
2471 | } |
2472 | ||
882ec7ce | 2473 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 | 2474 | { |
3d948cdf SH |
2475 | AioContext *aio_context; |
2476 | BlockJob *job = find_block_job(device, &aio_context); | |
2d47c6e9 SH |
2477 | |
2478 | if (!job) { | |
7ef15070 | 2479 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
2480 | return; |
2481 | } | |
2482 | ||
882ec7ce | 2483 | block_job_set_speed(job, speed, errp); |
3d948cdf | 2484 | aio_context_release(aio_context); |
2d47c6e9 | 2485 | } |
370521a1 | 2486 | |
6e37fb81 PB |
2487 | void qmp_block_job_cancel(const char *device, |
2488 | bool has_force, bool force, Error **errp) | |
370521a1 | 2489 | { |
3d948cdf SH |
2490 | AioContext *aio_context; |
2491 | BlockJob *job = find_block_job(device, &aio_context); | |
6e37fb81 | 2492 | |
370521a1 | 2493 | if (!job) { |
7ef15070 | 2494 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
2495 | return; |
2496 | } | |
3d948cdf SH |
2497 | |
2498 | if (!has_force) { | |
2499 | force = false; | |
2500 | } | |
2501 | ||
6e37fb81 | 2502 | if (job->paused && !force) { |
f231b88d CR |
2503 | error_setg(errp, "The block job for device '%s' is currently paused", |
2504 | device); | |
3d948cdf | 2505 | goto out; |
8acc72a4 | 2506 | } |
370521a1 SH |
2507 | |
2508 | trace_qmp_block_job_cancel(job); | |
2509 | block_job_cancel(job); | |
3d948cdf SH |
2510 | out: |
2511 | aio_context_release(aio_context); | |
370521a1 | 2512 | } |
fb5458cd | 2513 | |
6e37fb81 PB |
2514 | void qmp_block_job_pause(const char *device, Error **errp) |
2515 | { | |
3d948cdf SH |
2516 | AioContext *aio_context; |
2517 | BlockJob *job = find_block_job(device, &aio_context); | |
6e37fb81 PB |
2518 | |
2519 | if (!job) { | |
2520 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2521 | return; | |
2522 | } | |
2523 | ||
2524 | trace_qmp_block_job_pause(job); | |
2525 | block_job_pause(job); | |
3d948cdf | 2526 | aio_context_release(aio_context); |
6e37fb81 PB |
2527 | } |
2528 | ||
2529 | void qmp_block_job_resume(const char *device, Error **errp) | |
2530 | { | |
3d948cdf SH |
2531 | AioContext *aio_context; |
2532 | BlockJob *job = find_block_job(device, &aio_context); | |
6e37fb81 PB |
2533 | |
2534 | if (!job) { | |
2535 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2536 | return; | |
2537 | } | |
2538 | ||
2539 | trace_qmp_block_job_resume(job); | |
2540 | block_job_resume(job); | |
3d948cdf | 2541 | aio_context_release(aio_context); |
6e37fb81 PB |
2542 | } |
2543 | ||
aeae883b PB |
2544 | void qmp_block_job_complete(const char *device, Error **errp) |
2545 | { | |
3d948cdf SH |
2546 | AioContext *aio_context; |
2547 | BlockJob *job = find_block_job(device, &aio_context); | |
aeae883b PB |
2548 | |
2549 | if (!job) { | |
2550 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2551 | return; | |
2552 | } | |
2553 | ||
2554 | trace_qmp_block_job_complete(job); | |
2555 | block_job_complete(job, errp); | |
3d948cdf | 2556 | aio_context_release(aio_context); |
aeae883b PB |
2557 | } |
2558 | ||
fa40e656 JC |
2559 | void qmp_change_backing_file(const char *device, |
2560 | const char *image_node_name, | |
2561 | const char *backing_file, | |
2562 | Error **errp) | |
2563 | { | |
2564 | BlockDriverState *bs = NULL; | |
2565 | BlockDriverState *image_bs = NULL; | |
2566 | Error *local_err = NULL; | |
2567 | bool ro; | |
2568 | int open_flags; | |
2569 | int ret; | |
2570 | ||
2571 | /* find the top layer BDS of the chain */ | |
2572 | bs = bdrv_find(device); | |
2573 | if (!bs) { | |
2574 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2575 | return; | |
2576 | } | |
2577 | ||
2578 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); | |
2579 | if (local_err) { | |
2580 | error_propagate(errp, local_err); | |
2581 | return; | |
2582 | } | |
2583 | ||
2584 | if (!image_bs) { | |
2585 | error_setg(errp, "image file not found"); | |
2586 | return; | |
2587 | } | |
2588 | ||
2589 | if (bdrv_find_base(image_bs) == image_bs) { | |
2590 | error_setg(errp, "not allowing backing file change on an image " | |
2591 | "without a backing file"); | |
2592 | return; | |
2593 | } | |
2594 | ||
2595 | /* even though we are not necessarily operating on bs, we need it to | |
2596 | * determine if block ops are currently prohibited on the chain */ | |
2597 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
2598 | return; | |
2599 | } | |
2600 | ||
2601 | /* final sanity check */ | |
2602 | if (!bdrv_chain_contains(bs, image_bs)) { | |
2603 | error_setg(errp, "'%s' and image file are not in the same chain", | |
2604 | device); | |
2605 | return; | |
2606 | } | |
2607 | ||
2608 | /* if not r/w, reopen to make r/w */ | |
2609 | open_flags = image_bs->open_flags; | |
2610 | ro = bdrv_is_read_only(image_bs); | |
2611 | ||
2612 | if (ro) { | |
2613 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
2614 | if (local_err) { | |
2615 | error_propagate(errp, local_err); | |
2616 | return; | |
2617 | } | |
2618 | } | |
2619 | ||
2620 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
2621 | image_bs->drv ? image_bs->drv->format_name : ""); | |
2622 | ||
2623 | if (ret < 0) { | |
2624 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
2625 | backing_file); | |
2626 | /* don't exit here, so we can try to restore open flags if | |
2627 | * appropriate */ | |
2628 | } | |
2629 | ||
2630 | if (ro) { | |
2631 | bdrv_reopen(image_bs, open_flags, &local_err); | |
2632 | if (local_err) { | |
2633 | error_propagate(errp, local_err); /* will preserve prior errp */ | |
2634 | } | |
2635 | } | |
2636 | } | |
2637 | ||
d26c9a15 KW |
2638 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
2639 | { | |
2640 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
18e46a03 | 2641 | BlockBackend *blk; |
d26c9a15 KW |
2642 | QObject *obj; |
2643 | QDict *qdict; | |
d26c9a15 KW |
2644 | Error *local_err = NULL; |
2645 | ||
2646 | /* Require an ID in the top level */ | |
2647 | if (!options->has_id) { | |
2648 | error_setg(errp, "Block device needs an ID"); | |
2649 | goto fail; | |
2650 | } | |
2651 | ||
60e19e06 | 2652 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
d26c9a15 | 2653 | * cache.direct=false instead of silently switching to aio=threads, except |
60e19e06 | 2654 | * when called from drive_new(). |
d26c9a15 KW |
2655 | * |
2656 | * For now, simply forbidding the combination for all drivers will do. */ | |
2657 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
c6e0bd9b KW |
2658 | bool direct = options->has_cache && |
2659 | options->cache->has_direct && | |
2660 | options->cache->direct; | |
2661 | if (!direct) { | |
d26c9a15 KW |
2662 | error_setg(errp, "aio=native requires cache.direct=true"); |
2663 | goto fail; | |
2664 | } | |
2665 | } | |
2666 | ||
2667 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), | |
2668 | &options, NULL, &local_err); | |
84d18f06 | 2669 | if (local_err) { |
d26c9a15 KW |
2670 | error_propagate(errp, local_err); |
2671 | goto fail; | |
2672 | } | |
2673 | ||
2674 | obj = qmp_output_get_qobject(ov); | |
2675 | qdict = qobject_to_qdict(obj); | |
2676 | ||
2677 | qdict_flatten(qdict); | |
2678 | ||
18e46a03 | 2679 | blk = blockdev_init(NULL, qdict, &local_err); |
84d18f06 | 2680 | if (local_err) { |
b681072d | 2681 | error_propagate(errp, local_err); |
d26c9a15 KW |
2682 | goto fail; |
2683 | } | |
2684 | ||
18e46a03 | 2685 | if (bdrv_key_required(blk_bs(blk))) { |
18e46a03 | 2686 | blk_unref(blk); |
8ae8e904 KW |
2687 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
2688 | goto fail; | |
2689 | } | |
2690 | ||
d26c9a15 KW |
2691 | fail: |
2692 | qmp_output_visitor_cleanup(ov); | |
2693 | } | |
2694 | ||
fea68bb6 | 2695 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
fb5458cd | 2696 | { |
fea68bb6 MA |
2697 | BlockJobInfoList *head = NULL, **p_next = &head; |
2698 | BlockDriverState *bs; | |
fb5458cd | 2699 | |
fea68bb6 | 2700 | for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) { |
69691e72 SH |
2701 | AioContext *aio_context = bdrv_get_aio_context(bs); |
2702 | ||
2703 | aio_context_acquire(aio_context); | |
2704 | ||
fea68bb6 MA |
2705 | if (bs->job) { |
2706 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); | |
2707 | elem->value = block_job_query(bs->job); | |
2708 | *p_next = elem; | |
2709 | p_next = &elem->next; | |
2710 | } | |
69691e72 SH |
2711 | |
2712 | aio_context_release(aio_context); | |
fb5458cd | 2713 | } |
fb5458cd | 2714 | |
fea68bb6 | 2715 | return head; |
fb5458cd | 2716 | } |
4d454574 | 2717 | |
0006383e | 2718 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 2719 | .name = "drive", |
0006383e | 2720 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
2721 | .desc = { |
2722 | { | |
4d454574 PB |
2723 | .name = "snapshot", |
2724 | .type = QEMU_OPT_BOOL, | |
2725 | .help = "enable/disable snapshot mode", | |
a9384aff PB |
2726 | },{ |
2727 | .name = "discard", | |
2728 | .type = QEMU_OPT_STRING, | |
2729 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 2730 | },{ |
29c4e2b5 KW |
2731 | .name = "cache.writeback", |
2732 | .type = QEMU_OPT_BOOL, | |
2733 | .help = "enables writeback mode for any caches", | |
2734 | },{ | |
2735 | .name = "cache.direct", | |
2736 | .type = QEMU_OPT_BOOL, | |
2737 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
2738 | },{ | |
2739 | .name = "cache.no-flush", | |
2740 | .type = QEMU_OPT_BOOL, | |
2741 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
2742 | },{ |
2743 | .name = "aio", | |
2744 | .type = QEMU_OPT_STRING, | |
2745 | .help = "host AIO implementation (threads, native)", | |
2746 | },{ | |
2747 | .name = "format", | |
2748 | .type = QEMU_OPT_STRING, | |
2749 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
2750 | },{ |
2751 | .name = "rerror", | |
2752 | .type = QEMU_OPT_STRING, | |
2753 | .help = "read error action", | |
2754 | },{ | |
2755 | .name = "werror", | |
2756 | .type = QEMU_OPT_STRING, | |
2757 | .help = "write error action", | |
4d454574 | 2758 | },{ |
0f227a94 | 2759 | .name = "read-only", |
4d454574 PB |
2760 | .type = QEMU_OPT_BOOL, |
2761 | .help = "open drive file as read-only", | |
2762 | },{ | |
57975222 | 2763 | .name = "throttling.iops-total", |
4d454574 PB |
2764 | .type = QEMU_OPT_NUMBER, |
2765 | .help = "limit total I/O operations per second", | |
2766 | },{ | |
57975222 | 2767 | .name = "throttling.iops-read", |
4d454574 PB |
2768 | .type = QEMU_OPT_NUMBER, |
2769 | .help = "limit read operations per second", | |
2770 | },{ | |
57975222 | 2771 | .name = "throttling.iops-write", |
4d454574 PB |
2772 | .type = QEMU_OPT_NUMBER, |
2773 | .help = "limit write operations per second", | |
2774 | },{ | |
57975222 | 2775 | .name = "throttling.bps-total", |
4d454574 PB |
2776 | .type = QEMU_OPT_NUMBER, |
2777 | .help = "limit total bytes per second", | |
2778 | },{ | |
57975222 | 2779 | .name = "throttling.bps-read", |
4d454574 PB |
2780 | .type = QEMU_OPT_NUMBER, |
2781 | .help = "limit read bytes per second", | |
2782 | },{ | |
57975222 | 2783 | .name = "throttling.bps-write", |
4d454574 PB |
2784 | .type = QEMU_OPT_NUMBER, |
2785 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2786 | },{ |
2787 | .name = "throttling.iops-total-max", | |
2788 | .type = QEMU_OPT_NUMBER, | |
2789 | .help = "I/O operations burst", | |
2790 | },{ | |
2791 | .name = "throttling.iops-read-max", | |
2792 | .type = QEMU_OPT_NUMBER, | |
2793 | .help = "I/O operations read burst", | |
2794 | },{ | |
2795 | .name = "throttling.iops-write-max", | |
2796 | .type = QEMU_OPT_NUMBER, | |
2797 | .help = "I/O operations write burst", | |
2798 | },{ | |
2799 | .name = "throttling.bps-total-max", | |
2800 | .type = QEMU_OPT_NUMBER, | |
2801 | .help = "total bytes burst", | |
2802 | },{ | |
2803 | .name = "throttling.bps-read-max", | |
2804 | .type = QEMU_OPT_NUMBER, | |
2805 | .help = "total bytes read burst", | |
2806 | },{ | |
2807 | .name = "throttling.bps-write-max", | |
2808 | .type = QEMU_OPT_NUMBER, | |
2809 | .help = "total bytes write burst", | |
2024c1df BC |
2810 | },{ |
2811 | .name = "throttling.iops-size", | |
2812 | .type = QEMU_OPT_NUMBER, | |
2813 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2814 | },{ |
2815 | .name = "copy-on-read", | |
2816 | .type = QEMU_OPT_BOOL, | |
2817 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
2818 | },{ |
2819 | .name = "detect-zeroes", | |
2820 | .type = QEMU_OPT_STRING, | |
2821 | .help = "try to optimize zero writes (off, on, unmap)", | |
4d454574 PB |
2822 | }, |
2823 | { /* end of list */ } | |
2824 | }, | |
2825 | }; | |
0006383e KW |
2826 | |
2827 | QemuOptsList qemu_drive_opts = { | |
2828 | .name = "drive", | |
2829 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2830 | .desc = { | |
492fdc6f KW |
2831 | /* |
2832 | * no elements => accept any params | |
2833 | * validation will happen later | |
2834 | */ | |
0006383e KW |
2835 | { /* end of list */ } |
2836 | }, | |
2837 | }; |