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666daa68 MA |
1 | /* |
2 | * QEMU host block devices | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or | |
7 | * later. See the COPYING file in the top-level directory. | |
3618a094 MA |
8 | * |
9 | * This file incorporates work covered by the following copyright and | |
10 | * permission notice: | |
11 | * | |
12 | * Copyright (c) 2003-2008 Fabrice Bellard | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
15 | * of this software and associated documentation files (the "Software"), to deal | |
16 | * in the Software without restriction, including without limitation the rights | |
17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
18 | * copies of the Software, and to permit persons to whom the Software is | |
19 | * furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice shall be included in | |
22 | * all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
30 | * THE SOFTWARE. | |
666daa68 MA |
31 | */ |
32 | ||
9c17d615 | 33 | #include "sysemu/blockdev.h" |
0d09e41a | 34 | #include "hw/block/block.h" |
737e150e | 35 | #include "block/blockjob.h" |
83c9089e | 36 | #include "monitor/monitor.h" |
7b1b5d19 | 37 | #include "qapi/qmp/qerror.h" |
1de7afc9 PB |
38 | #include "qemu/option.h" |
39 | #include "qemu/config-file.h" | |
7b1b5d19 | 40 | #include "qapi/qmp/types.h" |
9c17d615 | 41 | #include "sysemu/sysemu.h" |
737e150e | 42 | #include "block/block_int.h" |
a4dea8a9 | 43 | #include "qmp-commands.h" |
12bd451f | 44 | #include "trace.h" |
9c17d615 | 45 | #include "sysemu/arch_init.h" |
666daa68 | 46 | |
c9b62a7e | 47 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
0006383e | 48 | extern QemuOptsList qemu_common_drive_opts; |
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 | ||
62 | static const 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 | ||
14bafc54 MA |
81 | /* |
82 | * We automatically delete the drive when a device using it gets | |
83 | * unplugged. Questionable feature, but we can't just drop it. | |
84 | * Device models call blockdev_mark_auto_del() to schedule the | |
85 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
86 | * when deletion is actually safe. | |
87 | */ | |
88 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
89 | { | |
90 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
91 | ||
12bde0ee PB |
92 | if (bs->job) { |
93 | block_job_cancel(bs->job); | |
94 | } | |
0fc0f1fa RH |
95 | if (dinfo) { |
96 | dinfo->auto_del = 1; | |
97 | } | |
14bafc54 MA |
98 | } |
99 | ||
100 | void blockdev_auto_del(BlockDriverState *bs) | |
101 | { | |
102 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
103 | ||
0fc0f1fa | 104 | if (dinfo && dinfo->auto_del) { |
84fb3925 | 105 | drive_put_ref(dinfo); |
14bafc54 MA |
106 | } |
107 | } | |
108 | ||
505a7fb1 MA |
109 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
110 | { | |
111 | int max_devs = if_max_devs[type]; | |
112 | return max_devs ? index / max_devs : 0; | |
113 | } | |
114 | ||
115 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
116 | { | |
117 | int max_devs = if_max_devs[type]; | |
118 | return max_devs ? index % max_devs : index; | |
119 | } | |
120 | ||
2292ddae MA |
121 | QemuOpts *drive_def(const char *optstr) |
122 | { | |
123 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
124 | } | |
125 | ||
126 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 127 | const char *optstr) |
666daa68 | 128 | { |
666daa68 | 129 | QemuOpts *opts; |
2292ddae | 130 | char buf[32]; |
666daa68 | 131 | |
2292ddae | 132 | opts = drive_def(optstr); |
666daa68 MA |
133 | if (!opts) { |
134 | return NULL; | |
135 | } | |
2292ddae MA |
136 | if (type != IF_DEFAULT) { |
137 | qemu_opt_set(opts, "if", if_name[type]); | |
138 | } | |
139 | if (index >= 0) { | |
140 | snprintf(buf, sizeof(buf), "%d", index); | |
141 | qemu_opt_set(opts, "index", buf); | |
142 | } | |
666daa68 MA |
143 | if (file) |
144 | qemu_opt_set(opts, "file", file); | |
145 | return opts; | |
146 | } | |
147 | ||
148 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
149 | { | |
150 | DriveInfo *dinfo; | |
151 | ||
152 | /* seek interface, bus and unit */ | |
153 | ||
154 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
155 | if (dinfo->type == type && | |
156 | dinfo->bus == bus && | |
157 | dinfo->unit == unit) | |
158 | return dinfo; | |
159 | } | |
160 | ||
161 | return NULL; | |
162 | } | |
163 | ||
f1bd51ac MA |
164 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
165 | { | |
166 | return drive_get(type, | |
167 | drive_index_to_bus_id(type, index), | |
168 | drive_index_to_unit_id(type, index)); | |
169 | } | |
170 | ||
666daa68 MA |
171 | int drive_get_max_bus(BlockInterfaceType type) |
172 | { | |
173 | int max_bus; | |
174 | DriveInfo *dinfo; | |
175 | ||
176 | max_bus = -1; | |
177 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
178 | if(dinfo->type == type && | |
179 | dinfo->bus > max_bus) | |
180 | max_bus = dinfo->bus; | |
181 | } | |
182 | return max_bus; | |
183 | } | |
184 | ||
13839974 MA |
185 | /* Get a block device. This should only be used for single-drive devices |
186 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
187 | appropriate bus. */ | |
188 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
189 | { | |
190 | static int next_block_unit[IF_COUNT]; | |
191 | ||
192 | return drive_get(type, 0, next_block_unit[type]++); | |
193 | } | |
194 | ||
e4700e59 | 195 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
196 | { |
197 | DriveInfo *dinfo; | |
198 | ||
199 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
200 | if (dinfo->bdrv == bs) { |
201 | return dinfo; | |
202 | } | |
666daa68 | 203 | } |
e4700e59 | 204 | return NULL; |
666daa68 MA |
205 | } |
206 | ||
666daa68 MA |
207 | static void bdrv_format_print(void *opaque, const char *name) |
208 | { | |
807105a7 | 209 | error_printf(" %s", name); |
666daa68 MA |
210 | } |
211 | ||
84fb3925 | 212 | static void drive_uninit(DriveInfo *dinfo) |
666daa68 MA |
213 | { |
214 | qemu_opts_del(dinfo->opts); | |
215 | bdrv_delete(dinfo->bdrv); | |
7267c094 | 216 | g_free(dinfo->id); |
666daa68 | 217 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 218 | g_free(dinfo->serial); |
7267c094 | 219 | g_free(dinfo); |
666daa68 MA |
220 | } |
221 | ||
84fb3925 MT |
222 | void drive_put_ref(DriveInfo *dinfo) |
223 | { | |
224 | assert(dinfo->refcount); | |
225 | if (--dinfo->refcount == 0) { | |
226 | drive_uninit(dinfo); | |
227 | } | |
228 | } | |
229 | ||
230 | void drive_get_ref(DriveInfo *dinfo) | |
231 | { | |
232 | dinfo->refcount++; | |
233 | } | |
234 | ||
aa398a5c SH |
235 | typedef struct { |
236 | QEMUBH *bh; | |
237 | DriveInfo *dinfo; | |
238 | } DrivePutRefBH; | |
239 | ||
240 | static void drive_put_ref_bh(void *opaque) | |
241 | { | |
242 | DrivePutRefBH *s = opaque; | |
243 | ||
244 | drive_put_ref(s->dinfo); | |
245 | qemu_bh_delete(s->bh); | |
246 | g_free(s); | |
247 | } | |
248 | ||
249 | /* | |
250 | * Release a drive reference in a BH | |
251 | * | |
252 | * It is not possible to use drive_put_ref() from a callback function when the | |
253 | * callers still need the drive. In such cases we schedule a BH to release the | |
254 | * reference. | |
255 | */ | |
256 | static void drive_put_ref_bh_schedule(DriveInfo *dinfo) | |
257 | { | |
258 | DrivePutRefBH *s; | |
259 | ||
260 | s = g_new(DrivePutRefBH, 1); | |
261 | s->bh = qemu_bh_new(drive_put_ref_bh, s); | |
262 | s->dinfo = dinfo; | |
263 | qemu_bh_schedule(s->bh); | |
264 | } | |
265 | ||
1ceee0d5 | 266 | static int parse_block_error_action(const char *buf, bool is_read) |
666daa68 MA |
267 | { |
268 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 269 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 270 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 271 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 272 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 273 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 274 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 275 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 276 | } else { |
807105a7 MA |
277 | error_report("'%s' invalid %s error action", |
278 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
279 | return -1; |
280 | } | |
281 | } | |
282 | ||
c546194f | 283 | static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp) |
0563e191 ZYW |
284 | { |
285 | bool bps_flag; | |
286 | bool iops_flag; | |
287 | ||
288 | assert(io_limits); | |
289 | ||
290 | bps_flag = (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] != 0) | |
291 | && ((io_limits->bps[BLOCK_IO_LIMIT_READ] != 0) | |
292 | || (io_limits->bps[BLOCK_IO_LIMIT_WRITE] != 0)); | |
293 | iops_flag = (io_limits->iops[BLOCK_IO_LIMIT_TOTAL] != 0) | |
294 | && ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0) | |
295 | || (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0)); | |
296 | if (bps_flag || iops_flag) { | |
c546194f SH |
297 | error_setg(errp, "bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) " |
298 | "cannot be used at the same time"); | |
0563e191 ZYW |
299 | return false; |
300 | } | |
301 | ||
7d81c141 SH |
302 | if (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] < 0 || |
303 | io_limits->bps[BLOCK_IO_LIMIT_WRITE] < 0 || | |
304 | io_limits->bps[BLOCK_IO_LIMIT_READ] < 0 || | |
305 | io_limits->iops[BLOCK_IO_LIMIT_TOTAL] < 0 || | |
306 | io_limits->iops[BLOCK_IO_LIMIT_WRITE] < 0 || | |
307 | io_limits->iops[BLOCK_IO_LIMIT_READ] < 0) { | |
308 | error_setg(errp, "bps and iops values must be 0 or greater"); | |
309 | return false; | |
310 | } | |
311 | ||
0563e191 ZYW |
312 | return true; |
313 | } | |
314 | ||
57975222 KW |
315 | static DriveInfo *blockdev_init(QemuOpts *all_opts, |
316 | BlockInterfaceType block_default_type) | |
666daa68 MA |
317 | { |
318 | const char *buf; | |
319 | const char *file = NULL; | |
666daa68 MA |
320 | const char *serial; |
321 | const char *mediastr = ""; | |
322 | BlockInterfaceType type; | |
323 | enum { MEDIA_DISK, MEDIA_CDROM } media; | |
324 | int bus_id, unit_id; | |
325 | int cyls, heads, secs, translation; | |
666daa68 MA |
326 | int max_devs; |
327 | int index; | |
328 | int ro = 0; | |
329 | int bdrv_flags = 0; | |
330 | int on_read_error, on_write_error; | |
331 | const char *devaddr; | |
332 | DriveInfo *dinfo; | |
0563e191 | 333 | BlockIOLimit io_limits; |
666daa68 | 334 | int snapshot = 0; |
fb0490f6 | 335 | bool copy_on_read; |
666daa68 | 336 | int ret; |
c546194f | 337 | Error *error = NULL; |
0006383e KW |
338 | QemuOpts *opts; |
339 | QDict *bs_opts; | |
340 | const char *id; | |
74fe54f2 | 341 | bool has_driver_specific_opts; |
666daa68 | 342 | |
666daa68 | 343 | translation = BIOS_ATA_TRANSLATION_AUTO; |
666daa68 MA |
344 | media = MEDIA_DISK; |
345 | ||
0006383e KW |
346 | /* Check common options by copying from all_opts to opts, all other options |
347 | * are stored in bs_opts. */ | |
348 | id = qemu_opts_id(all_opts); | |
349 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); | |
350 | if (error_is_set(&error)) { | |
351 | qerror_report_err(error); | |
352 | error_free(error); | |
353 | return NULL; | |
354 | } | |
355 | ||
356 | bs_opts = qdict_new(); | |
357 | qemu_opts_to_qdict(all_opts, bs_opts); | |
358 | qemu_opts_absorb_qdict(opts, bs_opts, &error); | |
359 | if (error_is_set(&error)) { | |
360 | qerror_report_err(error); | |
361 | error_free(error); | |
362 | return NULL; | |
363 | } | |
364 | ||
365 | if (id) { | |
366 | qdict_del(bs_opts, "id"); | |
367 | } | |
368 | ||
74fe54f2 KW |
369 | has_driver_specific_opts = !!qdict_size(bs_opts); |
370 | ||
666daa68 MA |
371 | /* extract parameters */ |
372 | bus_id = qemu_opt_get_number(opts, "bus", 0); | |
373 | unit_id = qemu_opt_get_number(opts, "unit", -1); | |
374 | index = qemu_opt_get_number(opts, "index", -1); | |
375 | ||
376 | cyls = qemu_opt_get_number(opts, "cyls", 0); | |
377 | heads = qemu_opt_get_number(opts, "heads", 0); | |
378 | secs = qemu_opt_get_number(opts, "secs", 0); | |
379 | ||
380 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); | |
381 | ro = qemu_opt_get_bool(opts, "readonly", 0); | |
fb0490f6 | 382 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
383 | |
384 | file = qemu_opt_get(opts, "file"); | |
385 | serial = qemu_opt_get(opts, "serial"); | |
386 | ||
387 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { | |
1960966d MA |
388 | for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) |
389 | ; | |
390 | if (type == IF_COUNT) { | |
807105a7 | 391 | error_report("unsupported bus type '%s'", buf); |
666daa68 MA |
392 | return NULL; |
393 | } | |
2d3999fe | 394 | } else { |
2d0d2837 | 395 | type = block_default_type; |
666daa68 | 396 | } |
2d3999fe | 397 | |
1960966d | 398 | max_devs = if_max_devs[type]; |
666daa68 MA |
399 | |
400 | if (cyls || heads || secs) { | |
aaea3f36 | 401 | if (cyls < 1) { |
807105a7 | 402 | error_report("invalid physical cyls number"); |
666daa68 MA |
403 | return NULL; |
404 | } | |
aaea3f36 | 405 | if (heads < 1) { |
807105a7 | 406 | error_report("invalid physical heads number"); |
666daa68 MA |
407 | return NULL; |
408 | } | |
aaea3f36 | 409 | if (secs < 1) { |
807105a7 | 410 | error_report("invalid physical secs number"); |
666daa68 MA |
411 | return NULL; |
412 | } | |
413 | } | |
414 | ||
415 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { | |
416 | if (!cyls) { | |
e4080f9b | 417 | error_report("'%s' trans must be used with cyls, heads and secs", |
807105a7 | 418 | buf); |
666daa68 MA |
419 | return NULL; |
420 | } | |
421 | if (!strcmp(buf, "none")) | |
422 | translation = BIOS_ATA_TRANSLATION_NONE; | |
423 | else if (!strcmp(buf, "lba")) | |
424 | translation = BIOS_ATA_TRANSLATION_LBA; | |
425 | else if (!strcmp(buf, "auto")) | |
426 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
427 | else { | |
807105a7 | 428 | error_report("'%s' invalid translation type", buf); |
666daa68 MA |
429 | return NULL; |
430 | } | |
431 | } | |
432 | ||
433 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { | |
434 | if (!strcmp(buf, "disk")) { | |
435 | media = MEDIA_DISK; | |
436 | } else if (!strcmp(buf, "cdrom")) { | |
437 | if (cyls || secs || heads) { | |
e7ff8f0e | 438 | error_report("CHS can't be set with media=%s", buf); |
666daa68 MA |
439 | return NULL; |
440 | } | |
441 | media = MEDIA_CDROM; | |
442 | } else { | |
807105a7 | 443 | error_report("'%s' invalid media", buf); |
666daa68 MA |
444 | return NULL; |
445 | } | |
446 | } | |
447 | ||
a9384aff PB |
448 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
449 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
450 | error_report("invalid discard option"); | |
451 | return NULL; | |
452 | } | |
453 | } | |
454 | ||
1f212b9d | 455 | bdrv_flags |= BDRV_O_CACHE_WB; |
666daa68 | 456 | if ((buf = qemu_opt_get(opts, "cache")) != NULL) { |
c3993cdc SH |
457 | if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) { |
458 | error_report("invalid cache option"); | |
459 | return NULL; | |
666daa68 MA |
460 | } |
461 | } | |
462 | ||
463 | #ifdef CONFIG_LINUX_AIO | |
464 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
465 | if (!strcmp(buf, "native")) { | |
466 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
467 | } else if (!strcmp(buf, "threads")) { | |
468 | /* this is the default */ | |
469 | } else { | |
807105a7 | 470 | error_report("invalid aio option"); |
666daa68 MA |
471 | return NULL; |
472 | } | |
473 | } | |
474 | #endif | |
475 | ||
476 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
477 | if (is_help_option(buf)) { |
478 | error_printf("Supported formats:"); | |
479 | bdrv_iterate_format(bdrv_format_print, NULL); | |
480 | error_printf("\n"); | |
481 | return NULL; | |
666daa68 | 482 | } |
74fe54f2 KW |
483 | |
484 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); | |
666daa68 MA |
485 | } |
486 | ||
0563e191 ZYW |
487 | /* disk I/O throttling */ |
488 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = | |
57975222 | 489 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
0563e191 | 490 | io_limits.bps[BLOCK_IO_LIMIT_READ] = |
57975222 | 491 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
0563e191 | 492 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = |
57975222 | 493 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
0563e191 | 494 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = |
57975222 | 495 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
0563e191 | 496 | io_limits.iops[BLOCK_IO_LIMIT_READ] = |
57975222 | 497 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
0563e191 | 498 | io_limits.iops[BLOCK_IO_LIMIT_WRITE] = |
57975222 | 499 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 500 | |
c546194f SH |
501 | if (!do_check_io_limits(&io_limits, &error)) { |
502 | error_report("%s", error_get_pretty(error)); | |
503 | error_free(error); | |
0563e191 ZYW |
504 | return NULL; |
505 | } | |
506 | ||
0d92d17a JK |
507 | if (qemu_opt_get(opts, "boot") != NULL) { |
508 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
509 | "ignored. Future versions will reject this parameter. Please " | |
510 | "update your scripts.\n"); | |
511 | } | |
512 | ||
92aa5c6d | 513 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
514 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
515 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 516 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
517 | return NULL; |
518 | } | |
519 | ||
520 | on_write_error = parse_block_error_action(buf, 0); | |
521 | if (on_write_error < 0) { | |
522 | return NULL; | |
523 | } | |
524 | } | |
525 | ||
92aa5c6d | 526 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 527 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 528 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 529 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
530 | return NULL; |
531 | } | |
532 | ||
533 | on_read_error = parse_block_error_action(buf, 1); | |
534 | if (on_read_error < 0) { | |
535 | return NULL; | |
536 | } | |
537 | } | |
538 | ||
539 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
540 | if (type != IF_VIRTIO) { | |
807105a7 | 541 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
542 | return NULL; |
543 | } | |
544 | } | |
545 | ||
546 | /* compute bus and unit according index */ | |
547 | ||
548 | if (index != -1) { | |
549 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 550 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
551 | return NULL; |
552 | } | |
505a7fb1 MA |
553 | bus_id = drive_index_to_bus_id(type, index); |
554 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
555 | } |
556 | ||
557 | /* if user doesn't specify a unit_id, | |
558 | * try to find the first free | |
559 | */ | |
560 | ||
561 | if (unit_id == -1) { | |
562 | unit_id = 0; | |
563 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
564 | unit_id++; | |
565 | if (max_devs && unit_id >= max_devs) { | |
566 | unit_id -= max_devs; | |
567 | bus_id++; | |
568 | } | |
569 | } | |
570 | } | |
571 | ||
572 | /* check unit id */ | |
573 | ||
574 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
575 | error_report("unit %d too big (max is %d)", |
576 | unit_id, max_devs - 1); | |
666daa68 MA |
577 | return NULL; |
578 | } | |
579 | ||
580 | /* | |
4e5d9b57 | 581 | * catch multiple definitions |
666daa68 MA |
582 | */ |
583 | ||
584 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
585 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
586 | bus_id, unit_id, index); | |
666daa68 MA |
587 | return NULL; |
588 | } | |
589 | ||
590 | /* init */ | |
591 | ||
7267c094 | 592 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 593 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 594 | dinfo->id = g_strdup(buf); |
666daa68 MA |
595 | } else { |
596 | /* no id supplied -> create one */ | |
7267c094 | 597 | dinfo->id = g_malloc0(32); |
666daa68 MA |
598 | if (type == IF_IDE || type == IF_SCSI) |
599 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
600 | if (max_devs) | |
601 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
79d21d5b | 602 | if_name[type], bus_id, mediastr, unit_id); |
666daa68 MA |
603 | else |
604 | snprintf(dinfo->id, 32, "%s%s%i", | |
79d21d5b | 605 | if_name[type], mediastr, unit_id); |
666daa68 MA |
606 | } |
607 | dinfo->bdrv = bdrv_new(dinfo->id); | |
80dd1aae KS |
608 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
609 | dinfo->bdrv->read_only = ro; | |
666daa68 MA |
610 | dinfo->devaddr = devaddr; |
611 | dinfo->type = type; | |
612 | dinfo->bus = bus_id; | |
613 | dinfo->unit = unit_id; | |
317bb412 MA |
614 | dinfo->cyls = cyls; |
615 | dinfo->heads = heads; | |
616 | dinfo->secs = secs; | |
617 | dinfo->trans = translation; | |
0006383e | 618 | dinfo->opts = all_opts; |
84fb3925 | 619 | dinfo->refcount = 1; |
bb44619b KW |
620 | if (serial != NULL) { |
621 | dinfo->serial = g_strdup(serial); | |
622 | } | |
666daa68 MA |
623 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
624 | ||
abd7f68d MA |
625 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
626 | ||
0563e191 ZYW |
627 | /* disk I/O throttling */ |
628 | bdrv_set_io_limits(dinfo->bdrv, &io_limits); | |
629 | ||
666daa68 MA |
630 | switch(type) { |
631 | case IF_IDE: | |
632 | case IF_SCSI: | |
633 | case IF_XEN: | |
634 | case IF_NONE: | |
2b584959 | 635 | dinfo->media_cd = media == MEDIA_CDROM; |
666daa68 MA |
636 | break; |
637 | case IF_SD: | |
666daa68 | 638 | case IF_FLOPPY: |
666daa68 MA |
639 | case IF_PFLASH: |
640 | case IF_MTD: | |
641 | break; | |
642 | case IF_VIRTIO: | |
0006383e | 643 | { |
666daa68 | 644 | /* add virtio block device */ |
0006383e KW |
645 | QemuOpts *devopts; |
646 | devopts = qemu_opts_create_nofail(qemu_find_opts("device")); | |
eeb9c1b5 | 647 | if (arch_type == QEMU_ARCH_S390X) { |
0006383e | 648 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); |
eeb9c1b5 | 649 | } else { |
0006383e | 650 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); |
eeb9c1b5 | 651 | } |
0006383e | 652 | qemu_opt_set(devopts, "drive", dinfo->id); |
666daa68 | 653 | if (devaddr) |
0006383e | 654 | qemu_opt_set(devopts, "addr", devaddr); |
666daa68 | 655 | break; |
0006383e | 656 | } |
2292ddae | 657 | default: |
666daa68 MA |
658 | abort(); |
659 | } | |
dd5b0d71 | 660 | if (!file || !*file) { |
74fe54f2 | 661 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
662 | file = NULL; |
663 | } else { | |
664 | return dinfo; | |
665 | } | |
666daa68 MA |
666 | } |
667 | if (snapshot) { | |
668 | /* always use cache=unsafe with snapshot */ | |
669 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
670 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
671 | } | |
672 | ||
fb0490f6 SH |
673 | if (copy_on_read) { |
674 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
675 | } | |
676 | ||
ed9d4205 BC |
677 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
678 | bdrv_flags |= BDRV_O_INCOMING; | |
679 | } | |
680 | ||
666daa68 MA |
681 | if (media == MEDIA_CDROM) { |
682 | /* CDROM is fine for any interface, don't check. */ | |
683 | ro = 1; | |
684 | } else if (ro == 1) { | |
1e9eb78a JJ |
685 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && |
686 | type != IF_NONE && type != IF_PFLASH) { | |
807105a7 | 687 | error_report("readonly not supported by this bus type"); |
a9ae2bff | 688 | goto err; |
666daa68 MA |
689 | } |
690 | } | |
691 | ||
692 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
693 | ||
04d4abe9 SH |
694 | if (ro && copy_on_read) { |
695 | error_report("warning: disabling copy_on_read on readonly drive"); | |
696 | } | |
697 | ||
74fe54f2 KW |
698 | QINCREF(bs_opts); |
699 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, NULL); | |
0006383e | 700 | |
666daa68 | 701 | if (ret < 0) { |
02582abd SW |
702 | if (ret == -EMEDIUMTYPE) { |
703 | error_report("could not open disk image %s: not in %s format", | |
74fe54f2 | 704 | file ?: dinfo->id, qdict_get_str(bs_opts, "driver")); |
02582abd SW |
705 | } else { |
706 | error_report("could not open disk image %s: %s", | |
c2ad1b0c | 707 | file ?: dinfo->id, strerror(-ret)); |
02582abd | 708 | } |
a9ae2bff | 709 | goto err; |
666daa68 MA |
710 | } |
711 | ||
712 | if (bdrv_key_required(dinfo->bdrv)) | |
713 | autostart = 0; | |
0006383e | 714 | |
74fe54f2 | 715 | QDECREF(bs_opts); |
0006383e KW |
716 | qemu_opts_del(opts); |
717 | ||
666daa68 | 718 | return dinfo; |
a9ae2bff MA |
719 | |
720 | err: | |
0006383e KW |
721 | qemu_opts_del(opts); |
722 | QDECREF(bs_opts); | |
a9ae2bff | 723 | bdrv_delete(dinfo->bdrv); |
7267c094 | 724 | g_free(dinfo->id); |
a9ae2bff | 725 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 726 | g_free(dinfo); |
a9ae2bff | 727 | return NULL; |
666daa68 MA |
728 | } |
729 | ||
57975222 KW |
730 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
731 | { | |
732 | const char *value; | |
733 | ||
734 | value = qemu_opt_get(opts, from); | |
735 | if (value) { | |
736 | qemu_opt_set(opts, to, value); | |
737 | qemu_opt_unset(opts, from); | |
738 | } | |
739 | } | |
740 | ||
741 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) | |
742 | { | |
743 | /* Change legacy command line options into QMP ones */ | |
744 | qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); | |
745 | qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); | |
746 | qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); | |
747 | ||
748 | qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); | |
749 | qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); | |
750 | qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); | |
751 | ||
752 | return blockdev_init(all_opts, block_default_type); | |
753 | } | |
754 | ||
666daa68 MA |
755 | void do_commit(Monitor *mon, const QDict *qdict) |
756 | { | |
666daa68 | 757 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 758 | BlockDriverState *bs; |
e8877497 | 759 | int ret; |
666daa68 | 760 | |
6ab4b5ab | 761 | if (!strcmp(device, "all")) { |
e8877497 | 762 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
763 | } else { |
764 | bs = bdrv_find(device); | |
ac59eb95 | 765 | if (!bs) { |
58513bde | 766 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 767 | return; |
6ab4b5ab | 768 | } |
2d3735d3 | 769 | ret = bdrv_commit(bs); |
58513bde JC |
770 | } |
771 | if (ret < 0) { | |
772 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
773 | strerror(-ret)); | |
666daa68 MA |
774 | } |
775 | } | |
776 | ||
6cc2a415 PB |
777 | static void blockdev_do_action(int kind, void *data, Error **errp) |
778 | { | |
c8a83e85 KW |
779 | TransactionAction action; |
780 | TransactionActionList list; | |
6cc2a415 PB |
781 | |
782 | action.kind = kind; | |
783 | action.data = data; | |
784 | list.value = &action; | |
785 | list.next = NULL; | |
786 | qmp_transaction(&list, errp); | |
787 | } | |
788 | ||
6106e249 LC |
789 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
790 | bool has_format, const char *format, | |
6cc2a415 | 791 | bool has_mode, enum NewImageMode mode, |
6106e249 | 792 | Error **errp) |
f8882568 | 793 | { |
6cc2a415 PB |
794 | BlockdevSnapshot snapshot = { |
795 | .device = (char *) device, | |
796 | .snapshot_file = (char *) snapshot_file, | |
797 | .has_format = has_format, | |
798 | .format = (char *) format, | |
799 | .has_mode = has_mode, | |
800 | .mode = mode, | |
801 | }; | |
c8a83e85 KW |
802 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
803 | &snapshot, errp); | |
f8882568 JS |
804 | } |
805 | ||
8802d1fd JC |
806 | |
807 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 808 | |
ba5d6ab6 | 809 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
810 | |
811 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
812 | abort() will be called, clean() will always be called if it present. */ | |
813 | typedef struct BdrvActionOps { | |
814 | /* Size of state struct, in bytes. */ | |
815 | size_t instance_size; | |
816 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 817 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 818 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 819 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 820 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 821 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 822 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 823 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
824 | } BdrvActionOps; |
825 | ||
826 | /* | |
827 | * This structure must be arranged as first member in child type, assuming | |
828 | * that compiler will also arrange it to the same address with parent instance. | |
829 | * Later it will be used in free(). | |
830 | */ | |
ba5d6ab6 | 831 | struct BlkTransactionState { |
c8a83e85 | 832 | TransactionAction *action; |
ba0c86a3 | 833 | const BdrvActionOps *ops; |
ba5d6ab6 | 834 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
835 | }; |
836 | ||
837 | /* external snapshot private data */ | |
ba5d6ab6 SH |
838 | typedef struct ExternalSnapshotState { |
839 | BlkTransactionState common; | |
8802d1fd JC |
840 | BlockDriverState *old_bs; |
841 | BlockDriverState *new_bs; | |
ba5d6ab6 | 842 | } ExternalSnapshotState; |
8802d1fd | 843 | |
ba5d6ab6 | 844 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
845 | Error **errp) |
846 | { | |
9b9877ee WX |
847 | BlockDriver *drv; |
848 | int flags, ret; | |
849 | Error *local_err = NULL; | |
e2a31e87 WX |
850 | const char *device; |
851 | const char *new_image_file; | |
852 | const char *format = "qcow2"; | |
853 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
854 | ExternalSnapshotState *state = |
855 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 856 | TransactionAction *action = common->action; |
9b9877ee | 857 | |
e2a31e87 | 858 | /* get parameters */ |
c8a83e85 | 859 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 WX |
860 | |
861 | device = action->blockdev_snapshot_sync->device; | |
862 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; | |
863 | if (action->blockdev_snapshot_sync->has_format) { | |
864 | format = action->blockdev_snapshot_sync->format; | |
865 | } | |
866 | if (action->blockdev_snapshot_sync->has_mode) { | |
867 | mode = action->blockdev_snapshot_sync->mode; | |
868 | } | |
869 | ||
870 | /* start processing */ | |
9b9877ee WX |
871 | drv = bdrv_find_format(format); |
872 | if (!drv) { | |
873 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
874 | return; | |
875 | } | |
876 | ||
ba5d6ab6 SH |
877 | state->old_bs = bdrv_find(device); |
878 | if (!state->old_bs) { | |
9b9877ee WX |
879 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
880 | return; | |
881 | } | |
882 | ||
ba5d6ab6 | 883 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
884 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
885 | return; | |
886 | } | |
887 | ||
ba5d6ab6 | 888 | if (bdrv_in_use(state->old_bs)) { |
9b9877ee WX |
889 | error_set(errp, QERR_DEVICE_IN_USE, device); |
890 | return; | |
891 | } | |
892 | ||
ba5d6ab6 SH |
893 | if (!bdrv_is_read_only(state->old_bs)) { |
894 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
895 | error_set(errp, QERR_IO_ERROR); |
896 | return; | |
897 | } | |
898 | } | |
899 | ||
ba5d6ab6 | 900 | flags = state->old_bs->open_flags; |
9b9877ee | 901 | |
9b9877ee WX |
902 | /* create new image w/backing file */ |
903 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
904 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
905 | state->old_bs->filename, |
906 | state->old_bs->drv->format_name, | |
9b9877ee WX |
907 | NULL, -1, flags, &local_err, false); |
908 | if (error_is_set(&local_err)) { | |
909 | error_propagate(errp, local_err); | |
910 | return; | |
911 | } | |
912 | } | |
913 | ||
914 | /* We will manually add the backing_hd field to the bs later */ | |
ba5d6ab6 | 915 | state->new_bs = bdrv_new(""); |
9b9877ee WX |
916 | /* TODO Inherit bs->options or only take explicit options with an |
917 | * extended QMP command? */ | |
ba5d6ab6 | 918 | ret = bdrv_open(state->new_bs, new_image_file, NULL, |
9b9877ee WX |
919 | flags | BDRV_O_NO_BACKING, drv); |
920 | if (ret != 0) { | |
0eef407c | 921 | error_setg_file_open(errp, -ret, new_image_file); |
9b9877ee WX |
922 | } |
923 | } | |
924 | ||
ba5d6ab6 | 925 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 926 | { |
ba5d6ab6 SH |
927 | ExternalSnapshotState *state = |
928 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 929 | |
ba5d6ab6 SH |
930 | /* This removes our old bs and adds the new bs */ |
931 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
932 | /* We don't need (or want) to use the transactional |
933 | * bdrv_reopen_multiple() across all the entries at once, because we | |
934 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 935 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
936 | NULL); |
937 | } | |
938 | ||
ba5d6ab6 | 939 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 940 | { |
ba5d6ab6 SH |
941 | ExternalSnapshotState *state = |
942 | DO_UPCAST(ExternalSnapshotState, common, common); | |
943 | if (state->new_bs) { | |
944 | bdrv_delete(state->new_bs); | |
96b86bf7 WX |
945 | } |
946 | } | |
947 | ||
3037f364 SH |
948 | typedef struct DriveBackupState { |
949 | BlkTransactionState common; | |
950 | BlockDriverState *bs; | |
951 | BlockJob *job; | |
952 | } DriveBackupState; | |
953 | ||
954 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
955 | { | |
956 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
957 | DriveBackup *backup; | |
958 | Error *local_err = NULL; | |
959 | ||
960 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
961 | backup = common->action->drive_backup; | |
962 | ||
963 | qmp_drive_backup(backup->device, backup->target, | |
964 | backup->has_format, backup->format, | |
b53169ea | 965 | backup->sync, |
3037f364 SH |
966 | backup->has_mode, backup->mode, |
967 | backup->has_speed, backup->speed, | |
968 | backup->has_on_source_error, backup->on_source_error, | |
969 | backup->has_on_target_error, backup->on_target_error, | |
970 | &local_err); | |
971 | if (error_is_set(&local_err)) { | |
972 | error_propagate(errp, local_err); | |
973 | state->bs = NULL; | |
974 | state->job = NULL; | |
975 | return; | |
976 | } | |
977 | ||
978 | state->bs = bdrv_find(backup->device); | |
979 | state->job = state->bs->job; | |
980 | } | |
981 | ||
982 | static void drive_backup_abort(BlkTransactionState *common) | |
983 | { | |
984 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
985 | BlockDriverState *bs = state->bs; | |
986 | ||
987 | /* Only cancel if it's the job we started */ | |
988 | if (bs && bs->job && bs->job == state->job) { | |
989 | block_job_cancel_sync(bs->job); | |
990 | } | |
991 | } | |
992 | ||
78b18b78 SH |
993 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
994 | { | |
995 | error_setg(errp, "Transaction aborted using Abort action"); | |
996 | } | |
997 | ||
998 | static void abort_commit(BlkTransactionState *common) | |
999 | { | |
1000 | assert(false); /* this action never succeeds */ | |
1001 | } | |
1002 | ||
ba0c86a3 | 1003 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1004 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1005 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1006 | .prepare = external_snapshot_prepare, |
1007 | .commit = external_snapshot_commit, | |
1008 | .abort = external_snapshot_abort, | |
1009 | }, | |
3037f364 SH |
1010 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1011 | .instance_size = sizeof(DriveBackupState), | |
1012 | .prepare = drive_backup_prepare, | |
1013 | .abort = drive_backup_abort, | |
1014 | }, | |
78b18b78 SH |
1015 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1016 | .instance_size = sizeof(BlkTransactionState), | |
1017 | .prepare = abort_prepare, | |
1018 | .commit = abort_commit, | |
1019 | }, | |
ba0c86a3 WX |
1020 | }; |
1021 | ||
8802d1fd JC |
1022 | /* |
1023 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1024 | * then we do not pivot any of the devices in the group, and abandon the | |
1025 | * snapshots | |
1026 | */ | |
c8a83e85 | 1027 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1028 | { |
c8a83e85 | 1029 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1030 | BlkTransactionState *state, *next; |
43e17041 | 1031 | Error *local_err = NULL; |
8802d1fd | 1032 | |
ba5d6ab6 | 1033 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1034 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1035 | ||
1036 | /* drain all i/o before any snapshots */ | |
1037 | bdrv_drain_all(); | |
1038 | ||
1039 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1040 | while (NULL != dev_entry) { | |
c8a83e85 | 1041 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1042 | const BdrvActionOps *ops; |
52e7c241 | 1043 | |
8802d1fd JC |
1044 | dev_info = dev_entry->value; |
1045 | dev_entry = dev_entry->next; | |
1046 | ||
ba0c86a3 WX |
1047 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1048 | ||
1049 | ops = &actions[dev_info->kind]; | |
ba5d6ab6 SH |
1050 | state = g_malloc0(ops->instance_size); |
1051 | state->ops = ops; | |
1052 | state->action = dev_info; | |
1053 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1054 | |
ba5d6ab6 | 1055 | state->ops->prepare(state, &local_err); |
ba0c86a3 WX |
1056 | if (error_is_set(&local_err)) { |
1057 | error_propagate(errp, local_err); | |
1058 | goto delete_and_fail; | |
8802d1fd | 1059 | } |
8802d1fd JC |
1060 | } |
1061 | ||
ba5d6ab6 | 1062 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1063 | if (state->ops->commit) { |
1064 | state->ops->commit(state); | |
1065 | } | |
8802d1fd JC |
1066 | } |
1067 | ||
1068 | /* success */ | |
1069 | goto exit; | |
1070 | ||
1071 | delete_and_fail: | |
1072 | /* | |
1073 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1074 | * the original bs for all images | |
1075 | */ | |
ba5d6ab6 SH |
1076 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1077 | if (state->ops->abort) { | |
1078 | state->ops->abort(state); | |
ba0c86a3 | 1079 | } |
8802d1fd JC |
1080 | } |
1081 | exit: | |
ba5d6ab6 SH |
1082 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1083 | if (state->ops->clean) { | |
1084 | state->ops->clean(state); | |
ba0c86a3 | 1085 | } |
ba5d6ab6 | 1086 | g_free(state); |
8802d1fd | 1087 | } |
8802d1fd JC |
1088 | } |
1089 | ||
1090 | ||
92d48558 | 1091 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1092 | { |
2d3735d3 SH |
1093 | if (bdrv_in_use(bs)) { |
1094 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
1095 | return; | |
1096 | } | |
2c6942fa | 1097 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
1098 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
1099 | return; | |
ea8f942f | 1100 | } |
92d48558 | 1101 | |
025ccaa7 PB |
1102 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1103 | bdrv_dev_eject_request(bs, force); | |
1104 | if (!force) { | |
92d48558 LC |
1105 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
1106 | return; | |
025ccaa7 | 1107 | } |
666daa68 | 1108 | } |
92d48558 | 1109 | |
3b5276b5 | 1110 | bdrv_close(bs); |
666daa68 MA |
1111 | } |
1112 | ||
c245b6a3 | 1113 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1114 | { |
1115 | BlockDriverState *bs; | |
666daa68 | 1116 | |
c245b6a3 | 1117 | bs = bdrv_find(device); |
666daa68 | 1118 | if (!bs) { |
c245b6a3 LC |
1119 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1120 | return; | |
92d48558 LC |
1121 | } |
1122 | ||
c245b6a3 | 1123 | eject_device(bs, force, errp); |
666daa68 MA |
1124 | } |
1125 | ||
a4dea8a9 | 1126 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
1127 | { |
1128 | BlockDriverState *bs; | |
1129 | int err; | |
1130 | ||
a4dea8a9 | 1131 | bs = bdrv_find(device); |
666daa68 | 1132 | if (!bs) { |
a4dea8a9 LC |
1133 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1134 | return; | |
666daa68 MA |
1135 | } |
1136 | ||
a4dea8a9 | 1137 | err = bdrv_set_key(bs, password); |
666daa68 | 1138 | if (err == -EINVAL) { |
a4dea8a9 LC |
1139 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1140 | return; | |
666daa68 | 1141 | } else if (err < 0) { |
a4dea8a9 LC |
1142 | error_set(errp, QERR_INVALID_PASSWORD); |
1143 | return; | |
666daa68 | 1144 | } |
666daa68 MA |
1145 | } |
1146 | ||
333a96ec LC |
1147 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1148 | int bdrv_flags, BlockDriver *drv, | |
1149 | const char *password, Error **errp) | |
1150 | { | |
0eef407c LC |
1151 | int ret; |
1152 | ||
1153 | ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv); | |
1154 | if (ret < 0) { | |
1155 | error_setg_file_open(errp, -ret, filename); | |
333a96ec LC |
1156 | return; |
1157 | } | |
1158 | ||
1159 | if (bdrv_key_required(bs)) { | |
1160 | if (password) { | |
1161 | if (bdrv_set_key(bs, password) < 0) { | |
1162 | error_set(errp, QERR_INVALID_PASSWORD); | |
1163 | } | |
1164 | } else { | |
1165 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1166 | bdrv_get_encrypted_filename(bs)); | |
1167 | } | |
1168 | } else if (password) { | |
1169 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1170 | } | |
1171 | } | |
1172 | ||
1173 | void qmp_change_blockdev(const char *device, const char *filename, | |
1174 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
1175 | { |
1176 | BlockDriverState *bs; | |
1177 | BlockDriver *drv = NULL; | |
1178 | int bdrv_flags; | |
92d48558 | 1179 | Error *err = NULL; |
666daa68 MA |
1180 | |
1181 | bs = bdrv_find(device); | |
1182 | if (!bs) { | |
333a96ec LC |
1183 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1184 | return; | |
666daa68 | 1185 | } |
333a96ec LC |
1186 | |
1187 | if (format) { | |
b64ec4e4 | 1188 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1189 | if (!drv) { |
333a96ec LC |
1190 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1191 | return; | |
666daa68 MA |
1192 | } |
1193 | } | |
333a96ec | 1194 | |
92d48558 LC |
1195 | eject_device(bs, 0, &err); |
1196 | if (error_is_set(&err)) { | |
333a96ec LC |
1197 | error_propagate(errp, err); |
1198 | return; | |
666daa68 | 1199 | } |
333a96ec | 1200 | |
528f7663 | 1201 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1202 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1203 | |
1204 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1205 | } |
9063f814 | 1206 | |
727f005e | 1207 | /* throttling disk I/O limits */ |
80047da5 LC |
1208 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
1209 | int64_t bps_wr, int64_t iops, int64_t iops_rd, | |
1210 | int64_t iops_wr, Error **errp) | |
727f005e ZYW |
1211 | { |
1212 | BlockIOLimit io_limits; | |
727f005e ZYW |
1213 | BlockDriverState *bs; |
1214 | ||
80047da5 | 1215 | bs = bdrv_find(device); |
727f005e | 1216 | if (!bs) { |
80047da5 LC |
1217 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1218 | return; | |
727f005e ZYW |
1219 | } |
1220 | ||
80047da5 LC |
1221 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps; |
1222 | io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd; | |
1223 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr; | |
1224 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops; | |
1225 | io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd; | |
1226 | io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr; | |
727f005e | 1227 | |
c546194f | 1228 | if (!do_check_io_limits(&io_limits, errp)) { |
80047da5 | 1229 | return; |
727f005e ZYW |
1230 | } |
1231 | ||
1232 | bs->io_limits = io_limits; | |
727f005e ZYW |
1233 | |
1234 | if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) { | |
1235 | bdrv_io_limits_enable(bs); | |
1236 | } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) { | |
1237 | bdrv_io_limits_disable(bs); | |
1238 | } else { | |
1239 | if (bs->block_timer) { | |
1240 | qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock)); | |
1241 | } | |
1242 | } | |
727f005e ZYW |
1243 | } |
1244 | ||
9063f814 RH |
1245 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1246 | { | |
1247 | const char *id = qdict_get_str(qdict, "id"); | |
1248 | BlockDriverState *bs; | |
9063f814 RH |
1249 | |
1250 | bs = bdrv_find(id); | |
1251 | if (!bs) { | |
1252 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1253 | return -1; | |
1254 | } | |
8591675f MT |
1255 | if (bdrv_in_use(bs)) { |
1256 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1257 | return -1; | |
1258 | } | |
9063f814 RH |
1259 | |
1260 | /* quiesce block driver; prevent further io */ | |
922453bc | 1261 | bdrv_drain_all(); |
9063f814 RH |
1262 | bdrv_flush(bs); |
1263 | bdrv_close(bs); | |
1264 | ||
fa879d62 | 1265 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1266 | * then we need to make the drive anonymous until the device |
1267 | * can be removed. If this is a drive with no device backing | |
1268 | * then we can just get rid of the block driver state right here. | |
1269 | */ | |
fa879d62 | 1270 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1271 | bdrv_make_anon(bs); |
293c51a6 SH |
1272 | |
1273 | /* Further I/O must not pause the guest */ | |
1274 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1275 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 RH |
1276 | } else { |
1277 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1278 | } |
1279 | ||
9063f814 RH |
1280 | return 0; |
1281 | } | |
6d4a2b3a | 1282 | |
5e7caacb | 1283 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1284 | { |
6d4a2b3a | 1285 | BlockDriverState *bs; |
8732901e | 1286 | int ret; |
6d4a2b3a CH |
1287 | |
1288 | bs = bdrv_find(device); | |
1289 | if (!bs) { | |
5e7caacb LC |
1290 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1291 | return; | |
6d4a2b3a CH |
1292 | } |
1293 | ||
1294 | if (size < 0) { | |
939a1cc3 | 1295 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1296 | return; |
6d4a2b3a CH |
1297 | } |
1298 | ||
92b7a08d PL |
1299 | /* complete all in-flight operations before resizing the device */ |
1300 | bdrv_drain_all(); | |
1301 | ||
8732901e KW |
1302 | ret = bdrv_truncate(bs, size); |
1303 | switch (ret) { | |
939a1cc3 SH |
1304 | case 0: |
1305 | break; | |
1306 | case -ENOMEDIUM: | |
1307 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1308 | break; | |
1309 | case -ENOTSUP: | |
1310 | error_set(errp, QERR_UNSUPPORTED); | |
1311 | break; | |
1312 | case -EACCES: | |
1313 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1314 | break; | |
1315 | case -EBUSY: | |
1316 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1317 | break; | |
1318 | default: | |
8732901e | 1319 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1320 | break; |
6d4a2b3a | 1321 | } |
6d4a2b3a | 1322 | } |
12bd451f | 1323 | |
9abf2dba | 1324 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1325 | { |
1326 | BlockDriverState *bs = opaque; | |
1327 | QObject *obj; | |
1328 | ||
9abf2dba | 1329 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1330 | |
1331 | assert(bs->job); | |
1332 | obj = qobject_from_block_job(bs->job); | |
1333 | if (ret < 0) { | |
1334 | QDict *dict = qobject_to_qdict(obj); | |
1335 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1336 | } | |
1337 | ||
370521a1 SH |
1338 | if (block_job_is_cancelled(bs->job)) { |
1339 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1340 | } else { | |
1341 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1342 | } | |
12bd451f | 1343 | qobject_decref(obj); |
aa398a5c SH |
1344 | |
1345 | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); | |
12bd451f SH |
1346 | } |
1347 | ||
1348 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1349 | const char *base, bool has_speed, int64_t speed, |
1350 | bool has_on_error, BlockdevOnError on_error, | |
1351 | Error **errp) | |
12bd451f SH |
1352 | { |
1353 | BlockDriverState *bs; | |
c8c3080f | 1354 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1355 | Error *local_err = NULL; |
12bd451f | 1356 | |
1d809098 PB |
1357 | if (!has_on_error) { |
1358 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1359 | } | |
1360 | ||
12bd451f SH |
1361 | bs = bdrv_find(device); |
1362 | if (!bs) { | |
1363 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1364 | return; | |
1365 | } | |
1366 | ||
12bd451f | 1367 | if (base) { |
c8c3080f MT |
1368 | base_bs = bdrv_find_backing_image(bs, base); |
1369 | if (base_bs == NULL) { | |
1370 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1371 | return; | |
1372 | } | |
12bd451f SH |
1373 | } |
1374 | ||
c83c66c3 | 1375 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1376 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1377 | if (error_is_set(&local_err)) { |
1378 | error_propagate(errp, local_err); | |
1379 | return; | |
12bd451f SH |
1380 | } |
1381 | ||
aa398a5c SH |
1382 | /* Grab a reference so hotplug does not delete the BlockDriverState from |
1383 | * underneath us. | |
1384 | */ | |
1385 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1386 | ||
12bd451f SH |
1387 | trace_qmp_block_stream(bs, bs->job); |
1388 | } | |
2d47c6e9 | 1389 | |
ed61fc10 JC |
1390 | void qmp_block_commit(const char *device, |
1391 | bool has_base, const char *base, const char *top, | |
1392 | bool has_speed, int64_t speed, | |
1393 | Error **errp) | |
1394 | { | |
1395 | BlockDriverState *bs; | |
1396 | BlockDriverState *base_bs, *top_bs; | |
1397 | Error *local_err = NULL; | |
1398 | /* This will be part of the QMP command, if/when the | |
1399 | * BlockdevOnError change for blkmirror makes it in | |
1400 | */ | |
92aa5c6d | 1401 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1402 | |
1403 | /* drain all i/o before commits */ | |
1404 | bdrv_drain_all(); | |
1405 | ||
1406 | bs = bdrv_find(device); | |
1407 | if (!bs) { | |
1408 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1409 | return; | |
1410 | } | |
ed61fc10 JC |
1411 | |
1412 | /* default top_bs is the active layer */ | |
1413 | top_bs = bs; | |
1414 | ||
1415 | if (top) { | |
1416 | if (strcmp(bs->filename, top) != 0) { | |
1417 | top_bs = bdrv_find_backing_image(bs, top); | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | if (top_bs == NULL) { | |
1422 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1423 | return; | |
1424 | } | |
1425 | ||
d5208c45 JC |
1426 | if (has_base && base) { |
1427 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1428 | } else { | |
1429 | base_bs = bdrv_find_base(top_bs); | |
1430 | } | |
1431 | ||
1432 | if (base_bs == NULL) { | |
1433 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1434 | return; | |
1435 | } | |
1436 | ||
ed61fc10 JC |
1437 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1438 | &local_err); | |
1439 | if (local_err != NULL) { | |
1440 | error_propagate(errp, local_err); | |
1441 | return; | |
1442 | } | |
1443 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1444 | * underneath us. | |
1445 | */ | |
1446 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1447 | } | |
1448 | ||
99a9addf SH |
1449 | void qmp_drive_backup(const char *device, const char *target, |
1450 | bool has_format, const char *format, | |
b53169ea | 1451 | enum MirrorSyncMode sync, |
99a9addf SH |
1452 | bool has_mode, enum NewImageMode mode, |
1453 | bool has_speed, int64_t speed, | |
1454 | bool has_on_source_error, BlockdevOnError on_source_error, | |
1455 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1456 | Error **errp) | |
1457 | { | |
1458 | BlockDriverState *bs; | |
1459 | BlockDriverState *target_bs; | |
1460 | BlockDriver *drv = NULL; | |
1461 | Error *local_err = NULL; | |
1462 | int flags; | |
1463 | int64_t size; | |
1464 | int ret; | |
1465 | ||
b53169ea SH |
1466 | if (sync != MIRROR_SYNC_MODE_FULL) { |
1467 | error_setg(errp, "only sync mode 'full' is currently supported"); | |
1468 | return; | |
1469 | } | |
99a9addf SH |
1470 | if (!has_speed) { |
1471 | speed = 0; | |
1472 | } | |
1473 | if (!has_on_source_error) { | |
1474 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1475 | } | |
1476 | if (!has_on_target_error) { | |
1477 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1478 | } | |
1479 | if (!has_mode) { | |
1480 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1481 | } | |
1482 | ||
1483 | bs = bdrv_find(device); | |
1484 | if (!bs) { | |
1485 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1486 | return; | |
1487 | } | |
1488 | ||
1489 | if (!bdrv_is_inserted(bs)) { | |
1490 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1491 | return; | |
1492 | } | |
1493 | ||
1494 | if (!has_format) { | |
1495 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1496 | } | |
1497 | if (format) { | |
1498 | drv = bdrv_find_format(format); | |
1499 | if (!drv) { | |
1500 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1501 | return; | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | if (bdrv_in_use(bs)) { | |
1506 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1507 | return; | |
1508 | } | |
1509 | ||
1510 | flags = bs->open_flags | BDRV_O_RDWR; | |
1511 | ||
1512 | size = bdrv_getlength(bs); | |
1513 | if (size < 0) { | |
1514 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1515 | return; | |
1516 | } | |
1517 | ||
1518 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1519 | assert(format && drv); | |
1520 | bdrv_img_create(target, format, | |
1521 | NULL, NULL, NULL, size, flags, &local_err, false); | |
1522 | } | |
1523 | ||
1524 | if (error_is_set(&local_err)) { | |
1525 | error_propagate(errp, local_err); | |
1526 | return; | |
1527 | } | |
1528 | ||
1529 | target_bs = bdrv_new(""); | |
1530 | ret = bdrv_open(target_bs, target, NULL, flags, drv); | |
1531 | if (ret < 0) { | |
1532 | bdrv_delete(target_bs); | |
1533 | error_setg_file_open(errp, -ret, target); | |
1534 | return; | |
1535 | } | |
1536 | ||
1537 | backup_start(bs, target_bs, speed, on_source_error, on_target_error, | |
1538 | block_job_cb, bs, &local_err); | |
1539 | if (local_err != NULL) { | |
1540 | bdrv_delete(target_bs); | |
1541 | error_propagate(errp, local_err); | |
1542 | return; | |
1543 | } | |
1544 | ||
1545 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1546 | * underneath us. | |
1547 | */ | |
1548 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1549 | } | |
1550 | ||
08e4ed6c PB |
1551 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1552 | ||
d9b902db PB |
1553 | void qmp_drive_mirror(const char *device, const char *target, |
1554 | bool has_format, const char *format, | |
1555 | enum MirrorSyncMode sync, | |
1556 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1557 | bool has_speed, int64_t speed, |
eee13dfe | 1558 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1559 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1560 | bool has_on_source_error, BlockdevOnError on_source_error, |
1561 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1562 | Error **errp) | |
d9b902db | 1563 | { |
d9b902db PB |
1564 | BlockDriverState *bs; |
1565 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
1566 | BlockDriver *drv = NULL; |
1567 | Error *local_err = NULL; | |
1568 | int flags; | |
ac3c5d83 | 1569 | int64_t size; |
d9b902db PB |
1570 | int ret; |
1571 | ||
1572 | if (!has_speed) { | |
1573 | speed = 0; | |
1574 | } | |
b952b558 PB |
1575 | if (!has_on_source_error) { |
1576 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1577 | } | |
1578 | if (!has_on_target_error) { | |
1579 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1580 | } | |
d9b902db PB |
1581 | if (!has_mode) { |
1582 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1583 | } | |
eee13dfe PB |
1584 | if (!has_granularity) { |
1585 | granularity = 0; | |
1586 | } | |
08e4ed6c PB |
1587 | if (!has_buf_size) { |
1588 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1589 | } | |
1590 | ||
eee13dfe PB |
1591 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1592 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1593 | return; | |
1594 | } | |
1595 | if (granularity & (granularity - 1)) { | |
1596 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1597 | return; | |
1598 | } | |
d9b902db PB |
1599 | |
1600 | bs = bdrv_find(device); | |
1601 | if (!bs) { | |
1602 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1603 | return; | |
1604 | } | |
1605 | ||
1606 | if (!bdrv_is_inserted(bs)) { | |
1607 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1608 | return; | |
1609 | } | |
1610 | ||
1611 | if (!has_format) { | |
1612 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1613 | } | |
1614 | if (format) { | |
1615 | drv = bdrv_find_format(format); | |
1616 | if (!drv) { | |
1617 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1618 | return; | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | if (bdrv_in_use(bs)) { | |
1623 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1624 | return; | |
1625 | } | |
1626 | ||
1627 | flags = bs->open_flags | BDRV_O_RDWR; | |
1628 | source = bs->backing_hd; | |
1629 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
1630 | sync = MIRROR_SYNC_MODE_FULL; | |
1631 | } | |
1632 | ||
ac3c5d83 SH |
1633 | size = bdrv_getlength(bs); |
1634 | if (size < 0) { | |
1635 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1636 | return; | |
1637 | } | |
1638 | ||
d9b902db PB |
1639 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
1640 | /* create new image w/o backing file */ | |
1641 | assert(format && drv); | |
cf8f2426 | 1642 | bdrv_img_create(target, format, |
f382d43a | 1643 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
1644 | } else { |
1645 | switch (mode) { | |
1646 | case NEW_IMAGE_MODE_EXISTING: | |
1647 | ret = 0; | |
1648 | break; | |
1649 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
1650 | /* create new image with backing file */ | |
cf8f2426 LC |
1651 | bdrv_img_create(target, format, |
1652 | source->filename, | |
1653 | source->drv->format_name, | |
f382d43a | 1654 | NULL, size, flags, &local_err, false); |
d9b902db PB |
1655 | break; |
1656 | default: | |
1657 | abort(); | |
1658 | } | |
1659 | } | |
1660 | ||
cf8f2426 LC |
1661 | if (error_is_set(&local_err)) { |
1662 | error_propagate(errp, local_err); | |
d9b902db PB |
1663 | return; |
1664 | } | |
1665 | ||
b812f671 PB |
1666 | /* Mirroring takes care of copy-on-write using the source's backing |
1667 | * file. | |
1668 | */ | |
d9b902db | 1669 | target_bs = bdrv_new(""); |
de9c0cec | 1670 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv); |
d9b902db PB |
1671 | if (ret < 0) { |
1672 | bdrv_delete(target_bs); | |
0eef407c | 1673 | error_setg_file_open(errp, -ret, target); |
d9b902db PB |
1674 | return; |
1675 | } | |
1676 | ||
08e4ed6c | 1677 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 1678 | on_source_error, on_target_error, |
b952b558 | 1679 | block_job_cb, bs, &local_err); |
d9b902db PB |
1680 | if (local_err != NULL) { |
1681 | bdrv_delete(target_bs); | |
1682 | error_propagate(errp, local_err); | |
1683 | return; | |
1684 | } | |
1685 | ||
1686 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1687 | * underneath us. | |
1688 | */ | |
1689 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1690 | } | |
1691 | ||
2d47c6e9 SH |
1692 | static BlockJob *find_block_job(const char *device) |
1693 | { | |
1694 | BlockDriverState *bs; | |
1695 | ||
1696 | bs = bdrv_find(device); | |
1697 | if (!bs || !bs->job) { | |
1698 | return NULL; | |
1699 | } | |
1700 | return bs->job; | |
1701 | } | |
1702 | ||
882ec7ce | 1703 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
1704 | { |
1705 | BlockJob *job = find_block_job(device); | |
1706 | ||
1707 | if (!job) { | |
7ef15070 | 1708 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
1709 | return; |
1710 | } | |
1711 | ||
882ec7ce | 1712 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 1713 | } |
370521a1 | 1714 | |
6e37fb81 PB |
1715 | void qmp_block_job_cancel(const char *device, |
1716 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
1717 | { |
1718 | BlockJob *job = find_block_job(device); | |
1719 | ||
6e37fb81 PB |
1720 | if (!has_force) { |
1721 | force = false; | |
1722 | } | |
1723 | ||
370521a1 | 1724 | if (!job) { |
7ef15070 | 1725 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
1726 | return; |
1727 | } | |
6e37fb81 | 1728 | if (job->paused && !force) { |
8acc72a4 PB |
1729 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
1730 | return; | |
1731 | } | |
370521a1 SH |
1732 | |
1733 | trace_qmp_block_job_cancel(job); | |
1734 | block_job_cancel(job); | |
1735 | } | |
fb5458cd | 1736 | |
6e37fb81 PB |
1737 | void qmp_block_job_pause(const char *device, Error **errp) |
1738 | { | |
1739 | BlockJob *job = find_block_job(device); | |
1740 | ||
1741 | if (!job) { | |
1742 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1743 | return; | |
1744 | } | |
1745 | ||
1746 | trace_qmp_block_job_pause(job); | |
1747 | block_job_pause(job); | |
1748 | } | |
1749 | ||
1750 | void qmp_block_job_resume(const char *device, Error **errp) | |
1751 | { | |
1752 | BlockJob *job = find_block_job(device); | |
1753 | ||
1754 | if (!job) { | |
1755 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1756 | return; | |
1757 | } | |
1758 | ||
1759 | trace_qmp_block_job_resume(job); | |
1760 | block_job_resume(job); | |
1761 | } | |
1762 | ||
aeae883b PB |
1763 | void qmp_block_job_complete(const char *device, Error **errp) |
1764 | { | |
1765 | BlockJob *job = find_block_job(device); | |
1766 | ||
1767 | if (!job) { | |
1768 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1769 | return; | |
1770 | } | |
1771 | ||
1772 | trace_qmp_block_job_complete(job); | |
1773 | block_job_complete(job, errp); | |
1774 | } | |
1775 | ||
fb5458cd SH |
1776 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
1777 | { | |
1778 | BlockJobInfoList **prev = opaque; | |
1779 | BlockJob *job = bs->job; | |
1780 | ||
1781 | if (job) { | |
30e628b7 PB |
1782 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
1783 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
1784 | (*prev)->next = elem; |
1785 | *prev = elem; | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
1790 | { | |
1791 | /* Dummy is a fake list element for holding the head pointer */ | |
1792 | BlockJobInfoList dummy = {}; | |
1793 | BlockJobInfoList *prev = &dummy; | |
1794 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
1795 | return dummy.next; | |
1796 | } | |
4d454574 | 1797 | |
0006383e | 1798 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 1799 | .name = "drive", |
0006383e | 1800 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
1801 | .desc = { |
1802 | { | |
1803 | .name = "bus", | |
1804 | .type = QEMU_OPT_NUMBER, | |
1805 | .help = "bus number", | |
1806 | },{ | |
1807 | .name = "unit", | |
1808 | .type = QEMU_OPT_NUMBER, | |
1809 | .help = "unit number (i.e. lun for scsi)", | |
1810 | },{ | |
1811 | .name = "if", | |
1812 | .type = QEMU_OPT_STRING, | |
1813 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
1814 | },{ | |
1815 | .name = "index", | |
1816 | .type = QEMU_OPT_NUMBER, | |
1817 | .help = "index number", | |
1818 | },{ | |
1819 | .name = "cyls", | |
1820 | .type = QEMU_OPT_NUMBER, | |
1821 | .help = "number of cylinders (ide disk geometry)", | |
1822 | },{ | |
1823 | .name = "heads", | |
1824 | .type = QEMU_OPT_NUMBER, | |
1825 | .help = "number of heads (ide disk geometry)", | |
1826 | },{ | |
1827 | .name = "secs", | |
1828 | .type = QEMU_OPT_NUMBER, | |
1829 | .help = "number of sectors (ide disk geometry)", | |
1830 | },{ | |
1831 | .name = "trans", | |
1832 | .type = QEMU_OPT_STRING, | |
1833 | .help = "chs translation (auto, lba. none)", | |
1834 | },{ | |
1835 | .name = "media", | |
1836 | .type = QEMU_OPT_STRING, | |
1837 | .help = "media type (disk, cdrom)", | |
1838 | },{ | |
1839 | .name = "snapshot", | |
1840 | .type = QEMU_OPT_BOOL, | |
1841 | .help = "enable/disable snapshot mode", | |
1842 | },{ | |
1843 | .name = "file", | |
1844 | .type = QEMU_OPT_STRING, | |
1845 | .help = "disk image", | |
a9384aff PB |
1846 | },{ |
1847 | .name = "discard", | |
1848 | .type = QEMU_OPT_STRING, | |
1849 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 PB |
1850 | },{ |
1851 | .name = "cache", | |
1852 | .type = QEMU_OPT_STRING, | |
1853 | .help = "host cache usage (none, writeback, writethrough, " | |
1854 | "directsync, unsafe)", | |
1855 | },{ | |
1856 | .name = "aio", | |
1857 | .type = QEMU_OPT_STRING, | |
1858 | .help = "host AIO implementation (threads, native)", | |
1859 | },{ | |
1860 | .name = "format", | |
1861 | .type = QEMU_OPT_STRING, | |
1862 | .help = "disk format (raw, qcow2, ...)", | |
1863 | },{ | |
1864 | .name = "serial", | |
1865 | .type = QEMU_OPT_STRING, | |
1866 | .help = "disk serial number", | |
1867 | },{ | |
1868 | .name = "rerror", | |
1869 | .type = QEMU_OPT_STRING, | |
1870 | .help = "read error action", | |
1871 | },{ | |
1872 | .name = "werror", | |
1873 | .type = QEMU_OPT_STRING, | |
1874 | .help = "write error action", | |
1875 | },{ | |
1876 | .name = "addr", | |
1877 | .type = QEMU_OPT_STRING, | |
1878 | .help = "pci address (virtio only)", | |
1879 | },{ | |
1880 | .name = "readonly", | |
1881 | .type = QEMU_OPT_BOOL, | |
1882 | .help = "open drive file as read-only", | |
1883 | },{ | |
57975222 | 1884 | .name = "throttling.iops-total", |
4d454574 PB |
1885 | .type = QEMU_OPT_NUMBER, |
1886 | .help = "limit total I/O operations per second", | |
1887 | },{ | |
57975222 | 1888 | .name = "throttling.iops-read", |
4d454574 PB |
1889 | .type = QEMU_OPT_NUMBER, |
1890 | .help = "limit read operations per second", | |
1891 | },{ | |
57975222 | 1892 | .name = "throttling.iops-write", |
4d454574 PB |
1893 | .type = QEMU_OPT_NUMBER, |
1894 | .help = "limit write operations per second", | |
1895 | },{ | |
57975222 | 1896 | .name = "throttling.bps-total", |
4d454574 PB |
1897 | .type = QEMU_OPT_NUMBER, |
1898 | .help = "limit total bytes per second", | |
1899 | },{ | |
57975222 | 1900 | .name = "throttling.bps-read", |
4d454574 PB |
1901 | .type = QEMU_OPT_NUMBER, |
1902 | .help = "limit read bytes per second", | |
1903 | },{ | |
57975222 | 1904 | .name = "throttling.bps-write", |
4d454574 PB |
1905 | .type = QEMU_OPT_NUMBER, |
1906 | .help = "limit write bytes per second", | |
1907 | },{ | |
1908 | .name = "copy-on-read", | |
1909 | .type = QEMU_OPT_BOOL, | |
1910 | .help = "copy read data from backing file into image file", | |
1911 | },{ | |
1912 | .name = "boot", | |
1913 | .type = QEMU_OPT_BOOL, | |
1914 | .help = "(deprecated, ignored)", | |
1915 | }, | |
1916 | { /* end of list */ } | |
1917 | }, | |
1918 | }; | |
0006383e KW |
1919 | |
1920 | QemuOptsList qemu_drive_opts = { | |
1921 | .name = "drive", | |
1922 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
1923 | .desc = { | |
492fdc6f KW |
1924 | /* |
1925 | * no elements => accept any params | |
1926 | * validation will happen later | |
1927 | */ | |
0006383e KW |
1928 | { /* end of list */ } |
1929 | }, | |
1930 | }; |