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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. | |
8 | */ | |
9 | ||
9c17d615 | 10 | #include "sysemu/blockdev.h" |
2b584959 | 11 | #include "hw/block-common.h" |
737e150e | 12 | #include "block/blockjob.h" |
83c9089e | 13 | #include "monitor/monitor.h" |
7b1b5d19 | 14 | #include "qapi/qmp/qerror.h" |
1de7afc9 PB |
15 | #include "qemu/option.h" |
16 | #include "qemu/config-file.h" | |
7b1b5d19 | 17 | #include "qapi/qmp/types.h" |
9c17d615 | 18 | #include "sysemu/sysemu.h" |
737e150e | 19 | #include "block/block_int.h" |
a4dea8a9 | 20 | #include "qmp-commands.h" |
12bd451f | 21 | #include "trace.h" |
9c17d615 | 22 | #include "sysemu/arch_init.h" |
666daa68 | 23 | |
c9b62a7e | 24 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
0006383e | 25 | extern QemuOptsList qemu_common_drive_opts; |
666daa68 | 26 | |
1960966d MA |
27 | static const char *const if_name[IF_COUNT] = { |
28 | [IF_NONE] = "none", | |
29 | [IF_IDE] = "ide", | |
30 | [IF_SCSI] = "scsi", | |
31 | [IF_FLOPPY] = "floppy", | |
32 | [IF_PFLASH] = "pflash", | |
33 | [IF_MTD] = "mtd", | |
34 | [IF_SD] = "sd", | |
35 | [IF_VIRTIO] = "virtio", | |
36 | [IF_XEN] = "xen", | |
37 | }; | |
38 | ||
39 | static const int if_max_devs[IF_COUNT] = { | |
27d6bf40 MA |
40 | /* |
41 | * Do not change these numbers! They govern how drive option | |
42 | * index maps to unit and bus. That mapping is ABI. | |
43 | * | |
44 | * All controllers used to imlement if=T drives need to support | |
45 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
46 | * Otherwise, some index values map to "impossible" bus, unit | |
47 | * values. | |
48 | * | |
49 | * For instance, if you change [IF_SCSI] to 255, -drive | |
50 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
51 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
52 | * the drive can't be set up. Regression. | |
53 | */ | |
54 | [IF_IDE] = 2, | |
55 | [IF_SCSI] = 7, | |
1960966d MA |
56 | }; |
57 | ||
14bafc54 MA |
58 | /* |
59 | * We automatically delete the drive when a device using it gets | |
60 | * unplugged. Questionable feature, but we can't just drop it. | |
61 | * Device models call blockdev_mark_auto_del() to schedule the | |
62 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
63 | * when deletion is actually safe. | |
64 | */ | |
65 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
66 | { | |
67 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
68 | ||
12bde0ee PB |
69 | if (bs->job) { |
70 | block_job_cancel(bs->job); | |
71 | } | |
0fc0f1fa RH |
72 | if (dinfo) { |
73 | dinfo->auto_del = 1; | |
74 | } | |
14bafc54 MA |
75 | } |
76 | ||
77 | void blockdev_auto_del(BlockDriverState *bs) | |
78 | { | |
79 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
80 | ||
0fc0f1fa | 81 | if (dinfo && dinfo->auto_del) { |
84fb3925 | 82 | drive_put_ref(dinfo); |
14bafc54 MA |
83 | } |
84 | } | |
85 | ||
505a7fb1 MA |
86 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
87 | { | |
88 | int max_devs = if_max_devs[type]; | |
89 | return max_devs ? index / max_devs : 0; | |
90 | } | |
91 | ||
92 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
93 | { | |
94 | int max_devs = if_max_devs[type]; | |
95 | return max_devs ? index % max_devs : index; | |
96 | } | |
97 | ||
2292ddae MA |
98 | QemuOpts *drive_def(const char *optstr) |
99 | { | |
100 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
101 | } | |
102 | ||
103 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 104 | const char *optstr) |
666daa68 | 105 | { |
666daa68 | 106 | QemuOpts *opts; |
2292ddae | 107 | char buf[32]; |
666daa68 | 108 | |
2292ddae | 109 | opts = drive_def(optstr); |
666daa68 MA |
110 | if (!opts) { |
111 | return NULL; | |
112 | } | |
2292ddae MA |
113 | if (type != IF_DEFAULT) { |
114 | qemu_opt_set(opts, "if", if_name[type]); | |
115 | } | |
116 | if (index >= 0) { | |
117 | snprintf(buf, sizeof(buf), "%d", index); | |
118 | qemu_opt_set(opts, "index", buf); | |
119 | } | |
666daa68 MA |
120 | if (file) |
121 | qemu_opt_set(opts, "file", file); | |
122 | return opts; | |
123 | } | |
124 | ||
125 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
126 | { | |
127 | DriveInfo *dinfo; | |
128 | ||
129 | /* seek interface, bus and unit */ | |
130 | ||
131 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
132 | if (dinfo->type == type && | |
133 | dinfo->bus == bus && | |
134 | dinfo->unit == unit) | |
135 | return dinfo; | |
136 | } | |
137 | ||
138 | return NULL; | |
139 | } | |
140 | ||
f1bd51ac MA |
141 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
142 | { | |
143 | return drive_get(type, | |
144 | drive_index_to_bus_id(type, index), | |
145 | drive_index_to_unit_id(type, index)); | |
146 | } | |
147 | ||
666daa68 MA |
148 | int drive_get_max_bus(BlockInterfaceType type) |
149 | { | |
150 | int max_bus; | |
151 | DriveInfo *dinfo; | |
152 | ||
153 | max_bus = -1; | |
154 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
155 | if(dinfo->type == type && | |
156 | dinfo->bus > max_bus) | |
157 | max_bus = dinfo->bus; | |
158 | } | |
159 | return max_bus; | |
160 | } | |
161 | ||
13839974 MA |
162 | /* Get a block device. This should only be used for single-drive devices |
163 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
164 | appropriate bus. */ | |
165 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
166 | { | |
167 | static int next_block_unit[IF_COUNT]; | |
168 | ||
169 | return drive_get(type, 0, next_block_unit[type]++); | |
170 | } | |
171 | ||
e4700e59 | 172 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
173 | { |
174 | DriveInfo *dinfo; | |
175 | ||
176 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
177 | if (dinfo->bdrv == bs) { |
178 | return dinfo; | |
179 | } | |
666daa68 | 180 | } |
e4700e59 | 181 | return NULL; |
666daa68 MA |
182 | } |
183 | ||
666daa68 MA |
184 | static void bdrv_format_print(void *opaque, const char *name) |
185 | { | |
807105a7 | 186 | error_printf(" %s", name); |
666daa68 MA |
187 | } |
188 | ||
84fb3925 | 189 | static void drive_uninit(DriveInfo *dinfo) |
666daa68 MA |
190 | { |
191 | qemu_opts_del(dinfo->opts); | |
192 | bdrv_delete(dinfo->bdrv); | |
7267c094 | 193 | g_free(dinfo->id); |
666daa68 | 194 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 195 | g_free(dinfo->serial); |
7267c094 | 196 | g_free(dinfo); |
666daa68 MA |
197 | } |
198 | ||
84fb3925 MT |
199 | void drive_put_ref(DriveInfo *dinfo) |
200 | { | |
201 | assert(dinfo->refcount); | |
202 | if (--dinfo->refcount == 0) { | |
203 | drive_uninit(dinfo); | |
204 | } | |
205 | } | |
206 | ||
207 | void drive_get_ref(DriveInfo *dinfo) | |
208 | { | |
209 | dinfo->refcount++; | |
210 | } | |
211 | ||
aa398a5c SH |
212 | typedef struct { |
213 | QEMUBH *bh; | |
214 | DriveInfo *dinfo; | |
215 | } DrivePutRefBH; | |
216 | ||
217 | static void drive_put_ref_bh(void *opaque) | |
218 | { | |
219 | DrivePutRefBH *s = opaque; | |
220 | ||
221 | drive_put_ref(s->dinfo); | |
222 | qemu_bh_delete(s->bh); | |
223 | g_free(s); | |
224 | } | |
225 | ||
226 | /* | |
227 | * Release a drive reference in a BH | |
228 | * | |
229 | * It is not possible to use drive_put_ref() from a callback function when the | |
230 | * callers still need the drive. In such cases we schedule a BH to release the | |
231 | * reference. | |
232 | */ | |
233 | static void drive_put_ref_bh_schedule(DriveInfo *dinfo) | |
234 | { | |
235 | DrivePutRefBH *s; | |
236 | ||
237 | s = g_new(DrivePutRefBH, 1); | |
238 | s->bh = qemu_bh_new(drive_put_ref_bh, s); | |
239 | s->dinfo = dinfo; | |
240 | qemu_bh_schedule(s->bh); | |
241 | } | |
242 | ||
1ceee0d5 | 243 | static int parse_block_error_action(const char *buf, bool is_read) |
666daa68 MA |
244 | { |
245 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 246 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 247 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 248 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 249 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 250 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 251 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 252 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 253 | } else { |
807105a7 MA |
254 | error_report("'%s' invalid %s error action", |
255 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
256 | return -1; |
257 | } | |
258 | } | |
259 | ||
c546194f | 260 | static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp) |
0563e191 ZYW |
261 | { |
262 | bool bps_flag; | |
263 | bool iops_flag; | |
264 | ||
265 | assert(io_limits); | |
266 | ||
267 | bps_flag = (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] != 0) | |
268 | && ((io_limits->bps[BLOCK_IO_LIMIT_READ] != 0) | |
269 | || (io_limits->bps[BLOCK_IO_LIMIT_WRITE] != 0)); | |
270 | iops_flag = (io_limits->iops[BLOCK_IO_LIMIT_TOTAL] != 0) | |
271 | && ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0) | |
272 | || (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0)); | |
273 | if (bps_flag || iops_flag) { | |
c546194f SH |
274 | error_setg(errp, "bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) " |
275 | "cannot be used at the same time"); | |
0563e191 ZYW |
276 | return false; |
277 | } | |
278 | ||
7d81c141 SH |
279 | if (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] < 0 || |
280 | io_limits->bps[BLOCK_IO_LIMIT_WRITE] < 0 || | |
281 | io_limits->bps[BLOCK_IO_LIMIT_READ] < 0 || | |
282 | io_limits->iops[BLOCK_IO_LIMIT_TOTAL] < 0 || | |
283 | io_limits->iops[BLOCK_IO_LIMIT_WRITE] < 0 || | |
284 | io_limits->iops[BLOCK_IO_LIMIT_READ] < 0) { | |
285 | error_setg(errp, "bps and iops values must be 0 or greater"); | |
286 | return false; | |
287 | } | |
288 | ||
0563e191 ZYW |
289 | return true; |
290 | } | |
291 | ||
0006383e | 292 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
666daa68 MA |
293 | { |
294 | const char *buf; | |
295 | const char *file = NULL; | |
666daa68 MA |
296 | const char *serial; |
297 | const char *mediastr = ""; | |
298 | BlockInterfaceType type; | |
299 | enum { MEDIA_DISK, MEDIA_CDROM } media; | |
300 | int bus_id, unit_id; | |
301 | int cyls, heads, secs, translation; | |
302 | BlockDriver *drv = NULL; | |
303 | int max_devs; | |
304 | int index; | |
305 | int ro = 0; | |
306 | int bdrv_flags = 0; | |
307 | int on_read_error, on_write_error; | |
308 | const char *devaddr; | |
309 | DriveInfo *dinfo; | |
0563e191 | 310 | BlockIOLimit io_limits; |
666daa68 | 311 | int snapshot = 0; |
fb0490f6 | 312 | bool copy_on_read; |
666daa68 | 313 | int ret; |
c546194f | 314 | Error *error = NULL; |
0006383e KW |
315 | QemuOpts *opts; |
316 | QDict *bs_opts; | |
317 | const char *id; | |
666daa68 | 318 | |
666daa68 | 319 | translation = BIOS_ATA_TRANSLATION_AUTO; |
666daa68 MA |
320 | media = MEDIA_DISK; |
321 | ||
0006383e KW |
322 | /* Check common options by copying from all_opts to opts, all other options |
323 | * are stored in bs_opts. */ | |
324 | id = qemu_opts_id(all_opts); | |
325 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); | |
326 | if (error_is_set(&error)) { | |
327 | qerror_report_err(error); | |
328 | error_free(error); | |
329 | return NULL; | |
330 | } | |
331 | ||
332 | bs_opts = qdict_new(); | |
333 | qemu_opts_to_qdict(all_opts, bs_opts); | |
334 | qemu_opts_absorb_qdict(opts, bs_opts, &error); | |
335 | if (error_is_set(&error)) { | |
336 | qerror_report_err(error); | |
337 | error_free(error); | |
338 | return NULL; | |
339 | } | |
340 | ||
341 | if (id) { | |
342 | qdict_del(bs_opts, "id"); | |
343 | } | |
344 | ||
666daa68 MA |
345 | /* extract parameters */ |
346 | bus_id = qemu_opt_get_number(opts, "bus", 0); | |
347 | unit_id = qemu_opt_get_number(opts, "unit", -1); | |
348 | index = qemu_opt_get_number(opts, "index", -1); | |
349 | ||
350 | cyls = qemu_opt_get_number(opts, "cyls", 0); | |
351 | heads = qemu_opt_get_number(opts, "heads", 0); | |
352 | secs = qemu_opt_get_number(opts, "secs", 0); | |
353 | ||
354 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); | |
355 | ro = qemu_opt_get_bool(opts, "readonly", 0); | |
fb0490f6 | 356 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
357 | |
358 | file = qemu_opt_get(opts, "file"); | |
359 | serial = qemu_opt_get(opts, "serial"); | |
360 | ||
361 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { | |
1960966d MA |
362 | for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) |
363 | ; | |
364 | if (type == IF_COUNT) { | |
807105a7 | 365 | error_report("unsupported bus type '%s'", buf); |
666daa68 MA |
366 | return NULL; |
367 | } | |
2d3999fe | 368 | } else { |
2d0d2837 | 369 | type = block_default_type; |
666daa68 | 370 | } |
2d3999fe | 371 | |
1960966d | 372 | max_devs = if_max_devs[type]; |
666daa68 MA |
373 | |
374 | if (cyls || heads || secs) { | |
aaea3f36 | 375 | if (cyls < 1) { |
807105a7 | 376 | error_report("invalid physical cyls number"); |
666daa68 MA |
377 | return NULL; |
378 | } | |
aaea3f36 | 379 | if (heads < 1) { |
807105a7 | 380 | error_report("invalid physical heads number"); |
666daa68 MA |
381 | return NULL; |
382 | } | |
aaea3f36 | 383 | if (secs < 1) { |
807105a7 | 384 | error_report("invalid physical secs number"); |
666daa68 MA |
385 | return NULL; |
386 | } | |
387 | } | |
388 | ||
389 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { | |
390 | if (!cyls) { | |
e4080f9b | 391 | error_report("'%s' trans must be used with cyls, heads and secs", |
807105a7 | 392 | buf); |
666daa68 MA |
393 | return NULL; |
394 | } | |
395 | if (!strcmp(buf, "none")) | |
396 | translation = BIOS_ATA_TRANSLATION_NONE; | |
397 | else if (!strcmp(buf, "lba")) | |
398 | translation = BIOS_ATA_TRANSLATION_LBA; | |
399 | else if (!strcmp(buf, "auto")) | |
400 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
401 | else { | |
807105a7 | 402 | error_report("'%s' invalid translation type", buf); |
666daa68 MA |
403 | return NULL; |
404 | } | |
405 | } | |
406 | ||
407 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { | |
408 | if (!strcmp(buf, "disk")) { | |
409 | media = MEDIA_DISK; | |
410 | } else if (!strcmp(buf, "cdrom")) { | |
411 | if (cyls || secs || heads) { | |
e7ff8f0e | 412 | error_report("CHS can't be set with media=%s", buf); |
666daa68 MA |
413 | return NULL; |
414 | } | |
415 | media = MEDIA_CDROM; | |
416 | } else { | |
807105a7 | 417 | error_report("'%s' invalid media", buf); |
666daa68 MA |
418 | return NULL; |
419 | } | |
420 | } | |
421 | ||
a9384aff PB |
422 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
423 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
424 | error_report("invalid discard option"); | |
425 | return NULL; | |
426 | } | |
427 | } | |
428 | ||
1f212b9d | 429 | bdrv_flags |= BDRV_O_CACHE_WB; |
666daa68 | 430 | if ((buf = qemu_opt_get(opts, "cache")) != NULL) { |
c3993cdc SH |
431 | if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) { |
432 | error_report("invalid cache option"); | |
433 | return NULL; | |
666daa68 MA |
434 | } |
435 | } | |
436 | ||
437 | #ifdef CONFIG_LINUX_AIO | |
438 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
439 | if (!strcmp(buf, "native")) { | |
440 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
441 | } else if (!strcmp(buf, "threads")) { | |
442 | /* this is the default */ | |
443 | } else { | |
807105a7 | 444 | error_report("invalid aio option"); |
666daa68 MA |
445 | return NULL; |
446 | } | |
447 | } | |
448 | #endif | |
449 | ||
450 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
451 | if (is_help_option(buf)) { |
452 | error_printf("Supported formats:"); | |
453 | bdrv_iterate_format(bdrv_format_print, NULL); | |
454 | error_printf("\n"); | |
455 | return NULL; | |
666daa68 MA |
456 | } |
457 | drv = bdrv_find_whitelisted_format(buf); | |
458 | if (!drv) { | |
807105a7 | 459 | error_report("'%s' invalid format", buf); |
666daa68 MA |
460 | return NULL; |
461 | } | |
462 | } | |
463 | ||
0563e191 ZYW |
464 | /* disk I/O throttling */ |
465 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = | |
466 | qemu_opt_get_number(opts, "bps", 0); | |
467 | io_limits.bps[BLOCK_IO_LIMIT_READ] = | |
468 | qemu_opt_get_number(opts, "bps_rd", 0); | |
469 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = | |
470 | qemu_opt_get_number(opts, "bps_wr", 0); | |
471 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = | |
472 | qemu_opt_get_number(opts, "iops", 0); | |
473 | io_limits.iops[BLOCK_IO_LIMIT_READ] = | |
474 | qemu_opt_get_number(opts, "iops_rd", 0); | |
475 | io_limits.iops[BLOCK_IO_LIMIT_WRITE] = | |
476 | qemu_opt_get_number(opts, "iops_wr", 0); | |
477 | ||
c546194f SH |
478 | if (!do_check_io_limits(&io_limits, &error)) { |
479 | error_report("%s", error_get_pretty(error)); | |
480 | error_free(error); | |
0563e191 ZYW |
481 | return NULL; |
482 | } | |
483 | ||
0d92d17a JK |
484 | if (qemu_opt_get(opts, "boot") != NULL) { |
485 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
486 | "ignored. Future versions will reject this parameter. Please " | |
487 | "update your scripts.\n"); | |
488 | } | |
489 | ||
92aa5c6d | 490 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
491 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
492 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 493 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
494 | return NULL; |
495 | } | |
496 | ||
497 | on_write_error = parse_block_error_action(buf, 0); | |
498 | if (on_write_error < 0) { | |
499 | return NULL; | |
500 | } | |
501 | } | |
502 | ||
92aa5c6d | 503 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 504 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 505 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 506 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
507 | return NULL; |
508 | } | |
509 | ||
510 | on_read_error = parse_block_error_action(buf, 1); | |
511 | if (on_read_error < 0) { | |
512 | return NULL; | |
513 | } | |
514 | } | |
515 | ||
516 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
517 | if (type != IF_VIRTIO) { | |
807105a7 | 518 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
519 | return NULL; |
520 | } | |
521 | } | |
522 | ||
523 | /* compute bus and unit according index */ | |
524 | ||
525 | if (index != -1) { | |
526 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 527 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
528 | return NULL; |
529 | } | |
505a7fb1 MA |
530 | bus_id = drive_index_to_bus_id(type, index); |
531 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
532 | } |
533 | ||
534 | /* if user doesn't specify a unit_id, | |
535 | * try to find the first free | |
536 | */ | |
537 | ||
538 | if (unit_id == -1) { | |
539 | unit_id = 0; | |
540 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
541 | unit_id++; | |
542 | if (max_devs && unit_id >= max_devs) { | |
543 | unit_id -= max_devs; | |
544 | bus_id++; | |
545 | } | |
546 | } | |
547 | } | |
548 | ||
549 | /* check unit id */ | |
550 | ||
551 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
552 | error_report("unit %d too big (max is %d)", |
553 | unit_id, max_devs - 1); | |
666daa68 MA |
554 | return NULL; |
555 | } | |
556 | ||
557 | /* | |
4e5d9b57 | 558 | * catch multiple definitions |
666daa68 MA |
559 | */ |
560 | ||
561 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
562 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
563 | bus_id, unit_id, index); | |
666daa68 MA |
564 | return NULL; |
565 | } | |
566 | ||
567 | /* init */ | |
568 | ||
7267c094 | 569 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 570 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 571 | dinfo->id = g_strdup(buf); |
666daa68 MA |
572 | } else { |
573 | /* no id supplied -> create one */ | |
7267c094 | 574 | dinfo->id = g_malloc0(32); |
666daa68 MA |
575 | if (type == IF_IDE || type == IF_SCSI) |
576 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
577 | if (max_devs) | |
578 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
79d21d5b | 579 | if_name[type], bus_id, mediastr, unit_id); |
666daa68 MA |
580 | else |
581 | snprintf(dinfo->id, 32, "%s%s%i", | |
79d21d5b | 582 | if_name[type], mediastr, unit_id); |
666daa68 MA |
583 | } |
584 | dinfo->bdrv = bdrv_new(dinfo->id); | |
80dd1aae KS |
585 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
586 | dinfo->bdrv->read_only = ro; | |
666daa68 MA |
587 | dinfo->devaddr = devaddr; |
588 | dinfo->type = type; | |
589 | dinfo->bus = bus_id; | |
590 | dinfo->unit = unit_id; | |
317bb412 MA |
591 | dinfo->cyls = cyls; |
592 | dinfo->heads = heads; | |
593 | dinfo->secs = secs; | |
594 | dinfo->trans = translation; | |
0006383e | 595 | dinfo->opts = all_opts; |
84fb3925 | 596 | dinfo->refcount = 1; |
bb44619b KW |
597 | if (serial != NULL) { |
598 | dinfo->serial = g_strdup(serial); | |
599 | } | |
666daa68 MA |
600 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
601 | ||
abd7f68d MA |
602 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
603 | ||
0563e191 ZYW |
604 | /* disk I/O throttling */ |
605 | bdrv_set_io_limits(dinfo->bdrv, &io_limits); | |
606 | ||
666daa68 MA |
607 | switch(type) { |
608 | case IF_IDE: | |
609 | case IF_SCSI: | |
610 | case IF_XEN: | |
611 | case IF_NONE: | |
2b584959 | 612 | dinfo->media_cd = media == MEDIA_CDROM; |
666daa68 MA |
613 | break; |
614 | case IF_SD: | |
666daa68 | 615 | case IF_FLOPPY: |
666daa68 MA |
616 | case IF_PFLASH: |
617 | case IF_MTD: | |
618 | break; | |
619 | case IF_VIRTIO: | |
0006383e | 620 | { |
666daa68 | 621 | /* add virtio block device */ |
0006383e KW |
622 | QemuOpts *devopts; |
623 | devopts = qemu_opts_create_nofail(qemu_find_opts("device")); | |
eeb9c1b5 | 624 | if (arch_type == QEMU_ARCH_S390X) { |
0006383e | 625 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); |
eeb9c1b5 | 626 | } else { |
0006383e | 627 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); |
eeb9c1b5 | 628 | } |
0006383e | 629 | qemu_opt_set(devopts, "drive", dinfo->id); |
666daa68 | 630 | if (devaddr) |
0006383e | 631 | qemu_opt_set(devopts, "addr", devaddr); |
666daa68 | 632 | break; |
0006383e | 633 | } |
2292ddae | 634 | default: |
666daa68 MA |
635 | abort(); |
636 | } | |
dd5b0d71 | 637 | if (!file || !*file) { |
319ae529 | 638 | return dinfo; |
666daa68 MA |
639 | } |
640 | if (snapshot) { | |
641 | /* always use cache=unsafe with snapshot */ | |
642 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
643 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
644 | } | |
645 | ||
fb0490f6 SH |
646 | if (copy_on_read) { |
647 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
648 | } | |
649 | ||
ed9d4205 BC |
650 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
651 | bdrv_flags |= BDRV_O_INCOMING; | |
652 | } | |
653 | ||
666daa68 MA |
654 | if (media == MEDIA_CDROM) { |
655 | /* CDROM is fine for any interface, don't check. */ | |
656 | ro = 1; | |
657 | } else if (ro == 1) { | |
1e9eb78a JJ |
658 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && |
659 | type != IF_NONE && type != IF_PFLASH) { | |
807105a7 | 660 | error_report("readonly not supported by this bus type"); |
a9ae2bff | 661 | goto err; |
666daa68 MA |
662 | } |
663 | } | |
664 | ||
665 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
666 | ||
04d4abe9 SH |
667 | if (ro && copy_on_read) { |
668 | error_report("warning: disabling copy_on_read on readonly drive"); | |
669 | } | |
670 | ||
0006383e KW |
671 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv); |
672 | bs_opts = NULL; | |
673 | ||
666daa68 | 674 | if (ret < 0) { |
02582abd SW |
675 | if (ret == -EMEDIUMTYPE) { |
676 | error_report("could not open disk image %s: not in %s format", | |
677 | file, drv->format_name); | |
678 | } else { | |
679 | error_report("could not open disk image %s: %s", | |
680 | file, strerror(-ret)); | |
681 | } | |
a9ae2bff | 682 | goto err; |
666daa68 MA |
683 | } |
684 | ||
685 | if (bdrv_key_required(dinfo->bdrv)) | |
686 | autostart = 0; | |
0006383e KW |
687 | |
688 | qemu_opts_del(opts); | |
689 | ||
666daa68 | 690 | return dinfo; |
a9ae2bff MA |
691 | |
692 | err: | |
0006383e KW |
693 | qemu_opts_del(opts); |
694 | QDECREF(bs_opts); | |
a9ae2bff | 695 | bdrv_delete(dinfo->bdrv); |
7267c094 | 696 | g_free(dinfo->id); |
a9ae2bff | 697 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 698 | g_free(dinfo); |
a9ae2bff | 699 | return NULL; |
666daa68 MA |
700 | } |
701 | ||
702 | void do_commit(Monitor *mon, const QDict *qdict) | |
703 | { | |
666daa68 | 704 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 705 | BlockDriverState *bs; |
e8877497 | 706 | int ret; |
666daa68 | 707 | |
6ab4b5ab | 708 | if (!strcmp(device, "all")) { |
e8877497 | 709 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
710 | } else { |
711 | bs = bdrv_find(device); | |
ac59eb95 | 712 | if (!bs) { |
58513bde | 713 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 714 | return; |
6ab4b5ab | 715 | } |
2d3735d3 | 716 | ret = bdrv_commit(bs); |
58513bde JC |
717 | } |
718 | if (ret < 0) { | |
719 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
720 | strerror(-ret)); | |
666daa68 MA |
721 | } |
722 | } | |
723 | ||
6cc2a415 PB |
724 | static void blockdev_do_action(int kind, void *data, Error **errp) |
725 | { | |
726 | BlockdevAction action; | |
727 | BlockdevActionList list; | |
728 | ||
729 | action.kind = kind; | |
730 | action.data = data; | |
731 | list.value = &action; | |
732 | list.next = NULL; | |
733 | qmp_transaction(&list, errp); | |
734 | } | |
735 | ||
6106e249 LC |
736 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
737 | bool has_format, const char *format, | |
6cc2a415 | 738 | bool has_mode, enum NewImageMode mode, |
6106e249 | 739 | Error **errp) |
f8882568 | 740 | { |
6cc2a415 PB |
741 | BlockdevSnapshot snapshot = { |
742 | .device = (char *) device, | |
743 | .snapshot_file = (char *) snapshot_file, | |
744 | .has_format = has_format, | |
745 | .format = (char *) format, | |
746 | .has_mode = has_mode, | |
747 | .mode = mode, | |
748 | }; | |
749 | blockdev_do_action(BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, &snapshot, | |
750 | errp); | |
f8882568 JS |
751 | } |
752 | ||
8802d1fd JC |
753 | |
754 | /* New and old BlockDriverState structs for group snapshots */ | |
52e7c241 | 755 | typedef struct BlkTransactionStates { |
8802d1fd JC |
756 | BlockDriverState *old_bs; |
757 | BlockDriverState *new_bs; | |
52e7c241 PB |
758 | QSIMPLEQ_ENTRY(BlkTransactionStates) entry; |
759 | } BlkTransactionStates; | |
8802d1fd JC |
760 | |
761 | /* | |
762 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
763 | * then we do not pivot any of the devices in the group, and abandon the | |
764 | * snapshots | |
765 | */ | |
52e7c241 | 766 | void qmp_transaction(BlockdevActionList *dev_list, Error **errp) |
8802d1fd JC |
767 | { |
768 | int ret = 0; | |
52e7c241 PB |
769 | BlockdevActionList *dev_entry = dev_list; |
770 | BlkTransactionStates *states, *next; | |
43e17041 | 771 | Error *local_err = NULL; |
8802d1fd | 772 | |
52e7c241 | 773 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionStates) snap_bdrv_states; |
8802d1fd JC |
774 | QSIMPLEQ_INIT(&snap_bdrv_states); |
775 | ||
776 | /* drain all i/o before any snapshots */ | |
777 | bdrv_drain_all(); | |
778 | ||
779 | /* We don't do anything in this loop that commits us to the snapshot */ | |
780 | while (NULL != dev_entry) { | |
52e7c241 PB |
781 | BlockdevAction *dev_info = NULL; |
782 | BlockDriver *proto_drv; | |
783 | BlockDriver *drv; | |
784 | int flags; | |
bc8b094f PB |
785 | enum NewImageMode mode; |
786 | const char *new_image_file; | |
52e7c241 PB |
787 | const char *device; |
788 | const char *format = "qcow2"; | |
52e7c241 | 789 | |
8802d1fd JC |
790 | dev_info = dev_entry->value; |
791 | dev_entry = dev_entry->next; | |
792 | ||
52e7c241 | 793 | states = g_malloc0(sizeof(BlkTransactionStates)); |
8802d1fd JC |
794 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, states, entry); |
795 | ||
52e7c241 PB |
796 | switch (dev_info->kind) { |
797 | case BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: | |
798 | device = dev_info->blockdev_snapshot_sync->device; | |
bc8b094f PB |
799 | if (!dev_info->blockdev_snapshot_sync->has_mode) { |
800 | dev_info->blockdev_snapshot_sync->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
801 | } | |
802 | new_image_file = dev_info->blockdev_snapshot_sync->snapshot_file; | |
52e7c241 PB |
803 | if (dev_info->blockdev_snapshot_sync->has_format) { |
804 | format = dev_info->blockdev_snapshot_sync->format; | |
805 | } | |
bc8b094f | 806 | mode = dev_info->blockdev_snapshot_sync->mode; |
52e7c241 PB |
807 | break; |
808 | default: | |
809 | abort(); | |
810 | } | |
8802d1fd | 811 | |
52e7c241 PB |
812 | drv = bdrv_find_format(format); |
813 | if (!drv) { | |
814 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
815 | goto delete_and_fail; | |
816 | } | |
817 | ||
818 | states->old_bs = bdrv_find(device); | |
8802d1fd | 819 | if (!states->old_bs) { |
52e7c241 | 820 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
8802d1fd JC |
821 | goto delete_and_fail; |
822 | } | |
823 | ||
e86fe18a PB |
824 | if (!bdrv_is_inserted(states->old_bs)) { |
825 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
826 | goto delete_and_fail; | |
827 | } | |
828 | ||
8802d1fd | 829 | if (bdrv_in_use(states->old_bs)) { |
52e7c241 | 830 | error_set(errp, QERR_DEVICE_IN_USE, device); |
8802d1fd JC |
831 | goto delete_and_fail; |
832 | } | |
833 | ||
e86fe18a | 834 | if (!bdrv_is_read_only(states->old_bs)) { |
8802d1fd JC |
835 | if (bdrv_flush(states->old_bs)) { |
836 | error_set(errp, QERR_IO_ERROR); | |
837 | goto delete_and_fail; | |
838 | } | |
839 | } | |
840 | ||
8802d1fd JC |
841 | flags = states->old_bs->open_flags; |
842 | ||
52e7c241 | 843 | proto_drv = bdrv_find_protocol(new_image_file); |
8802d1fd JC |
844 | if (!proto_drv) { |
845 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
846 | goto delete_and_fail; | |
847 | } | |
848 | ||
849 | /* create new image w/backing file */ | |
bc8b094f | 850 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
43e17041 LC |
851 | bdrv_img_create(new_image_file, format, |
852 | states->old_bs->filename, | |
853 | states->old_bs->drv->format_name, | |
f382d43a | 854 | NULL, -1, flags, &local_err, false); |
43e17041 LC |
855 | if (error_is_set(&local_err)) { |
856 | error_propagate(errp, local_err); | |
bc8b094f PB |
857 | goto delete_and_fail; |
858 | } | |
8802d1fd JC |
859 | } |
860 | ||
861 | /* We will manually add the backing_hd field to the bs later */ | |
862 | states->new_bs = bdrv_new(""); | |
de9c0cec KW |
863 | /* TODO Inherit bs->options or only take explicit options with an |
864 | * extended QMP command? */ | |
865 | ret = bdrv_open(states->new_bs, new_image_file, NULL, | |
8802d1fd JC |
866 | flags | BDRV_O_NO_BACKING, drv); |
867 | if (ret != 0) { | |
52e7c241 | 868 | error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file); |
8802d1fd JC |
869 | goto delete_and_fail; |
870 | } | |
871 | } | |
872 | ||
873 | ||
874 | /* Now we are going to do the actual pivot. Everything up to this point | |
875 | * is reversible, but we are committed at this point */ | |
876 | QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { | |
877 | /* This removes our old bs from the bdrv_states, and adds the new bs */ | |
878 | bdrv_append(states->new_bs, states->old_bs); | |
870f5681 JC |
879 | /* We don't need (or want) to use the transactional |
880 | * bdrv_reopen_multiple() across all the entries at once, because we | |
881 | * don't want to abort all of them if one of them fails the reopen */ | |
882 | bdrv_reopen(states->new_bs, states->new_bs->open_flags & ~BDRV_O_RDWR, | |
883 | NULL); | |
8802d1fd JC |
884 | } |
885 | ||
886 | /* success */ | |
887 | goto exit; | |
888 | ||
889 | delete_and_fail: | |
890 | /* | |
891 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
892 | * the original bs for all images | |
893 | */ | |
894 | QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { | |
895 | if (states->new_bs) { | |
896 | bdrv_delete(states->new_bs); | |
897 | } | |
898 | } | |
899 | exit: | |
622d2419 | 900 | QSIMPLEQ_FOREACH_SAFE(states, &snap_bdrv_states, entry, next) { |
8802d1fd JC |
901 | g_free(states); |
902 | } | |
8802d1fd JC |
903 | } |
904 | ||
905 | ||
92d48558 | 906 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 907 | { |
2d3735d3 SH |
908 | if (bdrv_in_use(bs)) { |
909 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
910 | return; | |
911 | } | |
2c6942fa | 912 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
913 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
914 | return; | |
ea8f942f | 915 | } |
92d48558 | 916 | |
025ccaa7 PB |
917 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
918 | bdrv_dev_eject_request(bs, force); | |
919 | if (!force) { | |
92d48558 LC |
920 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
921 | return; | |
025ccaa7 | 922 | } |
666daa68 | 923 | } |
92d48558 | 924 | |
3b5276b5 | 925 | bdrv_close(bs); |
666daa68 MA |
926 | } |
927 | ||
c245b6a3 | 928 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
929 | { |
930 | BlockDriverState *bs; | |
666daa68 | 931 | |
c245b6a3 | 932 | bs = bdrv_find(device); |
666daa68 | 933 | if (!bs) { |
c245b6a3 LC |
934 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
935 | return; | |
92d48558 LC |
936 | } |
937 | ||
c245b6a3 | 938 | eject_device(bs, force, errp); |
666daa68 MA |
939 | } |
940 | ||
a4dea8a9 | 941 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
942 | { |
943 | BlockDriverState *bs; | |
944 | int err; | |
945 | ||
a4dea8a9 | 946 | bs = bdrv_find(device); |
666daa68 | 947 | if (!bs) { |
a4dea8a9 LC |
948 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
949 | return; | |
666daa68 MA |
950 | } |
951 | ||
a4dea8a9 | 952 | err = bdrv_set_key(bs, password); |
666daa68 | 953 | if (err == -EINVAL) { |
a4dea8a9 LC |
954 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
955 | return; | |
666daa68 | 956 | } else if (err < 0) { |
a4dea8a9 LC |
957 | error_set(errp, QERR_INVALID_PASSWORD); |
958 | return; | |
666daa68 | 959 | } |
666daa68 MA |
960 | } |
961 | ||
333a96ec LC |
962 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
963 | int bdrv_flags, BlockDriver *drv, | |
964 | const char *password, Error **errp) | |
965 | { | |
de9c0cec | 966 | if (bdrv_open(bs, filename, NULL, bdrv_flags, drv) < 0) { |
333a96ec LC |
967 | error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
968 | return; | |
969 | } | |
970 | ||
971 | if (bdrv_key_required(bs)) { | |
972 | if (password) { | |
973 | if (bdrv_set_key(bs, password) < 0) { | |
974 | error_set(errp, QERR_INVALID_PASSWORD); | |
975 | } | |
976 | } else { | |
977 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
978 | bdrv_get_encrypted_filename(bs)); | |
979 | } | |
980 | } else if (password) { | |
981 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
982 | } | |
983 | } | |
984 | ||
985 | void qmp_change_blockdev(const char *device, const char *filename, | |
986 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
987 | { |
988 | BlockDriverState *bs; | |
989 | BlockDriver *drv = NULL; | |
990 | int bdrv_flags; | |
92d48558 | 991 | Error *err = NULL; |
666daa68 MA |
992 | |
993 | bs = bdrv_find(device); | |
994 | if (!bs) { | |
333a96ec LC |
995 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
996 | return; | |
666daa68 | 997 | } |
333a96ec LC |
998 | |
999 | if (format) { | |
1000 | drv = bdrv_find_whitelisted_format(format); | |
666daa68 | 1001 | if (!drv) { |
333a96ec LC |
1002 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1003 | return; | |
666daa68 MA |
1004 | } |
1005 | } | |
333a96ec | 1006 | |
92d48558 LC |
1007 | eject_device(bs, 0, &err); |
1008 | if (error_is_set(&err)) { | |
333a96ec LC |
1009 | error_propagate(errp, err); |
1010 | return; | |
666daa68 | 1011 | } |
333a96ec | 1012 | |
528f7663 | 1013 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1014 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1015 | |
1016 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1017 | } |
9063f814 | 1018 | |
727f005e | 1019 | /* throttling disk I/O limits */ |
80047da5 LC |
1020 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
1021 | int64_t bps_wr, int64_t iops, int64_t iops_rd, | |
1022 | int64_t iops_wr, Error **errp) | |
727f005e ZYW |
1023 | { |
1024 | BlockIOLimit io_limits; | |
727f005e ZYW |
1025 | BlockDriverState *bs; |
1026 | ||
80047da5 | 1027 | bs = bdrv_find(device); |
727f005e | 1028 | if (!bs) { |
80047da5 LC |
1029 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1030 | return; | |
727f005e ZYW |
1031 | } |
1032 | ||
80047da5 LC |
1033 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps; |
1034 | io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd; | |
1035 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr; | |
1036 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops; | |
1037 | io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd; | |
1038 | io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr; | |
727f005e | 1039 | |
c546194f | 1040 | if (!do_check_io_limits(&io_limits, errp)) { |
80047da5 | 1041 | return; |
727f005e ZYW |
1042 | } |
1043 | ||
1044 | bs->io_limits = io_limits; | |
1045 | bs->slice_time = BLOCK_IO_SLICE_TIME; | |
1046 | ||
1047 | if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) { | |
1048 | bdrv_io_limits_enable(bs); | |
1049 | } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) { | |
1050 | bdrv_io_limits_disable(bs); | |
1051 | } else { | |
1052 | if (bs->block_timer) { | |
1053 | qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock)); | |
1054 | } | |
1055 | } | |
727f005e ZYW |
1056 | } |
1057 | ||
9063f814 RH |
1058 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1059 | { | |
1060 | const char *id = qdict_get_str(qdict, "id"); | |
1061 | BlockDriverState *bs; | |
9063f814 RH |
1062 | |
1063 | bs = bdrv_find(id); | |
1064 | if (!bs) { | |
1065 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1066 | return -1; | |
1067 | } | |
8591675f MT |
1068 | if (bdrv_in_use(bs)) { |
1069 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1070 | return -1; | |
1071 | } | |
9063f814 RH |
1072 | |
1073 | /* quiesce block driver; prevent further io */ | |
922453bc | 1074 | bdrv_drain_all(); |
9063f814 RH |
1075 | bdrv_flush(bs); |
1076 | bdrv_close(bs); | |
1077 | ||
fa879d62 | 1078 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1079 | * then we need to make the drive anonymous until the device |
1080 | * can be removed. If this is a drive with no device backing | |
1081 | * then we can just get rid of the block driver state right here. | |
1082 | */ | |
fa879d62 | 1083 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 RH |
1084 | bdrv_make_anon(bs); |
1085 | } else { | |
1086 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1087 | } |
1088 | ||
9063f814 RH |
1089 | return 0; |
1090 | } | |
6d4a2b3a | 1091 | |
5e7caacb | 1092 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1093 | { |
6d4a2b3a CH |
1094 | BlockDriverState *bs; |
1095 | ||
1096 | bs = bdrv_find(device); | |
1097 | if (!bs) { | |
5e7caacb LC |
1098 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1099 | return; | |
6d4a2b3a CH |
1100 | } |
1101 | ||
1102 | if (size < 0) { | |
939a1cc3 | 1103 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1104 | return; |
6d4a2b3a CH |
1105 | } |
1106 | ||
939a1cc3 SH |
1107 | switch (bdrv_truncate(bs, size)) { |
1108 | case 0: | |
1109 | break; | |
1110 | case -ENOMEDIUM: | |
1111 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1112 | break; | |
1113 | case -ENOTSUP: | |
1114 | error_set(errp, QERR_UNSUPPORTED); | |
1115 | break; | |
1116 | case -EACCES: | |
1117 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1118 | break; | |
1119 | case -EBUSY: | |
1120 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1121 | break; | |
1122 | default: | |
5e7caacb | 1123 | error_set(errp, QERR_UNDEFINED_ERROR); |
939a1cc3 | 1124 | break; |
6d4a2b3a | 1125 | } |
6d4a2b3a | 1126 | } |
12bd451f | 1127 | |
9abf2dba | 1128 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1129 | { |
1130 | BlockDriverState *bs = opaque; | |
1131 | QObject *obj; | |
1132 | ||
9abf2dba | 1133 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1134 | |
1135 | assert(bs->job); | |
1136 | obj = qobject_from_block_job(bs->job); | |
1137 | if (ret < 0) { | |
1138 | QDict *dict = qobject_to_qdict(obj); | |
1139 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1140 | } | |
1141 | ||
370521a1 SH |
1142 | if (block_job_is_cancelled(bs->job)) { |
1143 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1144 | } else { | |
1145 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1146 | } | |
12bd451f | 1147 | qobject_decref(obj); |
aa398a5c SH |
1148 | |
1149 | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); | |
12bd451f SH |
1150 | } |
1151 | ||
1152 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1153 | const char *base, bool has_speed, int64_t speed, |
1154 | bool has_on_error, BlockdevOnError on_error, | |
1155 | Error **errp) | |
12bd451f SH |
1156 | { |
1157 | BlockDriverState *bs; | |
c8c3080f | 1158 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1159 | Error *local_err = NULL; |
12bd451f | 1160 | |
1d809098 PB |
1161 | if (!has_on_error) { |
1162 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1163 | } | |
1164 | ||
12bd451f SH |
1165 | bs = bdrv_find(device); |
1166 | if (!bs) { | |
1167 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1168 | return; | |
1169 | } | |
1170 | ||
12bd451f | 1171 | if (base) { |
c8c3080f MT |
1172 | base_bs = bdrv_find_backing_image(bs, base); |
1173 | if (base_bs == NULL) { | |
1174 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1175 | return; | |
1176 | } | |
12bd451f SH |
1177 | } |
1178 | ||
c83c66c3 | 1179 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1180 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1181 | if (error_is_set(&local_err)) { |
1182 | error_propagate(errp, local_err); | |
1183 | return; | |
12bd451f SH |
1184 | } |
1185 | ||
aa398a5c SH |
1186 | /* Grab a reference so hotplug does not delete the BlockDriverState from |
1187 | * underneath us. | |
1188 | */ | |
1189 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1190 | ||
12bd451f SH |
1191 | trace_qmp_block_stream(bs, bs->job); |
1192 | } | |
2d47c6e9 | 1193 | |
ed61fc10 JC |
1194 | void qmp_block_commit(const char *device, |
1195 | bool has_base, const char *base, const char *top, | |
1196 | bool has_speed, int64_t speed, | |
1197 | Error **errp) | |
1198 | { | |
1199 | BlockDriverState *bs; | |
1200 | BlockDriverState *base_bs, *top_bs; | |
1201 | Error *local_err = NULL; | |
1202 | /* This will be part of the QMP command, if/when the | |
1203 | * BlockdevOnError change for blkmirror makes it in | |
1204 | */ | |
92aa5c6d | 1205 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1206 | |
1207 | /* drain all i/o before commits */ | |
1208 | bdrv_drain_all(); | |
1209 | ||
1210 | bs = bdrv_find(device); | |
1211 | if (!bs) { | |
1212 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1213 | return; | |
1214 | } | |
ed61fc10 JC |
1215 | |
1216 | /* default top_bs is the active layer */ | |
1217 | top_bs = bs; | |
1218 | ||
1219 | if (top) { | |
1220 | if (strcmp(bs->filename, top) != 0) { | |
1221 | top_bs = bdrv_find_backing_image(bs, top); | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | if (top_bs == NULL) { | |
1226 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1227 | return; | |
1228 | } | |
1229 | ||
d5208c45 JC |
1230 | if (has_base && base) { |
1231 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1232 | } else { | |
1233 | base_bs = bdrv_find_base(top_bs); | |
1234 | } | |
1235 | ||
1236 | if (base_bs == NULL) { | |
1237 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1238 | return; | |
1239 | } | |
1240 | ||
ed61fc10 JC |
1241 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1242 | &local_err); | |
1243 | if (local_err != NULL) { | |
1244 | error_propagate(errp, local_err); | |
1245 | return; | |
1246 | } | |
1247 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1248 | * underneath us. | |
1249 | */ | |
1250 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1251 | } | |
1252 | ||
08e4ed6c PB |
1253 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1254 | ||
d9b902db PB |
1255 | void qmp_drive_mirror(const char *device, const char *target, |
1256 | bool has_format, const char *format, | |
1257 | enum MirrorSyncMode sync, | |
1258 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1259 | bool has_speed, int64_t speed, |
eee13dfe | 1260 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1261 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1262 | bool has_on_source_error, BlockdevOnError on_source_error, |
1263 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1264 | Error **errp) | |
d9b902db | 1265 | { |
d9b902db PB |
1266 | BlockDriverState *bs; |
1267 | BlockDriverState *source, *target_bs; | |
1268 | BlockDriver *proto_drv; | |
1269 | BlockDriver *drv = NULL; | |
1270 | Error *local_err = NULL; | |
1271 | int flags; | |
1272 | uint64_t size; | |
1273 | int ret; | |
1274 | ||
1275 | if (!has_speed) { | |
1276 | speed = 0; | |
1277 | } | |
b952b558 PB |
1278 | if (!has_on_source_error) { |
1279 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1280 | } | |
1281 | if (!has_on_target_error) { | |
1282 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1283 | } | |
d9b902db PB |
1284 | if (!has_mode) { |
1285 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1286 | } | |
eee13dfe PB |
1287 | if (!has_granularity) { |
1288 | granularity = 0; | |
1289 | } | |
08e4ed6c PB |
1290 | if (!has_buf_size) { |
1291 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1292 | } | |
1293 | ||
eee13dfe PB |
1294 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1295 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1296 | return; | |
1297 | } | |
1298 | if (granularity & (granularity - 1)) { | |
1299 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1300 | return; | |
1301 | } | |
d9b902db PB |
1302 | |
1303 | bs = bdrv_find(device); | |
1304 | if (!bs) { | |
1305 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1306 | return; | |
1307 | } | |
1308 | ||
1309 | if (!bdrv_is_inserted(bs)) { | |
1310 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1311 | return; | |
1312 | } | |
1313 | ||
1314 | if (!has_format) { | |
1315 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1316 | } | |
1317 | if (format) { | |
1318 | drv = bdrv_find_format(format); | |
1319 | if (!drv) { | |
1320 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1321 | return; | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | if (bdrv_in_use(bs)) { | |
1326 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1327 | return; | |
1328 | } | |
1329 | ||
1330 | flags = bs->open_flags | BDRV_O_RDWR; | |
1331 | source = bs->backing_hd; | |
1332 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
1333 | sync = MIRROR_SYNC_MODE_FULL; | |
1334 | } | |
1335 | ||
1336 | proto_drv = bdrv_find_protocol(target); | |
1337 | if (!proto_drv) { | |
1338 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1339 | return; | |
1340 | } | |
1341 | ||
86899072 VI |
1342 | bdrv_get_geometry(bs, &size); |
1343 | size *= 512; | |
d9b902db PB |
1344 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
1345 | /* create new image w/o backing file */ | |
1346 | assert(format && drv); | |
cf8f2426 | 1347 | bdrv_img_create(target, format, |
f382d43a | 1348 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
1349 | } else { |
1350 | switch (mode) { | |
1351 | case NEW_IMAGE_MODE_EXISTING: | |
1352 | ret = 0; | |
1353 | break; | |
1354 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
1355 | /* create new image with backing file */ | |
cf8f2426 LC |
1356 | bdrv_img_create(target, format, |
1357 | source->filename, | |
1358 | source->drv->format_name, | |
f382d43a | 1359 | NULL, size, flags, &local_err, false); |
d9b902db PB |
1360 | break; |
1361 | default: | |
1362 | abort(); | |
1363 | } | |
1364 | } | |
1365 | ||
cf8f2426 LC |
1366 | if (error_is_set(&local_err)) { |
1367 | error_propagate(errp, local_err); | |
d9b902db PB |
1368 | return; |
1369 | } | |
1370 | ||
b812f671 PB |
1371 | /* Mirroring takes care of copy-on-write using the source's backing |
1372 | * file. | |
1373 | */ | |
d9b902db | 1374 | target_bs = bdrv_new(""); |
de9c0cec | 1375 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv); |
d9b902db PB |
1376 | |
1377 | if (ret < 0) { | |
1378 | bdrv_delete(target_bs); | |
1379 | error_set(errp, QERR_OPEN_FILE_FAILED, target); | |
1380 | return; | |
1381 | } | |
1382 | ||
08e4ed6c | 1383 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 1384 | on_source_error, on_target_error, |
b952b558 | 1385 | block_job_cb, bs, &local_err); |
d9b902db PB |
1386 | if (local_err != NULL) { |
1387 | bdrv_delete(target_bs); | |
1388 | error_propagate(errp, local_err); | |
1389 | return; | |
1390 | } | |
1391 | ||
1392 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1393 | * underneath us. | |
1394 | */ | |
1395 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1396 | } | |
1397 | ||
2d47c6e9 SH |
1398 | static BlockJob *find_block_job(const char *device) |
1399 | { | |
1400 | BlockDriverState *bs; | |
1401 | ||
1402 | bs = bdrv_find(device); | |
1403 | if (!bs || !bs->job) { | |
1404 | return NULL; | |
1405 | } | |
1406 | return bs->job; | |
1407 | } | |
1408 | ||
882ec7ce | 1409 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
1410 | { |
1411 | BlockJob *job = find_block_job(device); | |
1412 | ||
1413 | if (!job) { | |
7ef15070 | 1414 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
1415 | return; |
1416 | } | |
1417 | ||
882ec7ce | 1418 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 1419 | } |
370521a1 | 1420 | |
6e37fb81 PB |
1421 | void qmp_block_job_cancel(const char *device, |
1422 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
1423 | { |
1424 | BlockJob *job = find_block_job(device); | |
1425 | ||
6e37fb81 PB |
1426 | if (!has_force) { |
1427 | force = false; | |
1428 | } | |
1429 | ||
370521a1 | 1430 | if (!job) { |
7ef15070 | 1431 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
1432 | return; |
1433 | } | |
6e37fb81 | 1434 | if (job->paused && !force) { |
8acc72a4 PB |
1435 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
1436 | return; | |
1437 | } | |
370521a1 SH |
1438 | |
1439 | trace_qmp_block_job_cancel(job); | |
1440 | block_job_cancel(job); | |
1441 | } | |
fb5458cd | 1442 | |
6e37fb81 PB |
1443 | void qmp_block_job_pause(const char *device, Error **errp) |
1444 | { | |
1445 | BlockJob *job = find_block_job(device); | |
1446 | ||
1447 | if (!job) { | |
1448 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1449 | return; | |
1450 | } | |
1451 | ||
1452 | trace_qmp_block_job_pause(job); | |
1453 | block_job_pause(job); | |
1454 | } | |
1455 | ||
1456 | void qmp_block_job_resume(const char *device, Error **errp) | |
1457 | { | |
1458 | BlockJob *job = find_block_job(device); | |
1459 | ||
1460 | if (!job) { | |
1461 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1462 | return; | |
1463 | } | |
1464 | ||
1465 | trace_qmp_block_job_resume(job); | |
1466 | block_job_resume(job); | |
1467 | } | |
1468 | ||
aeae883b PB |
1469 | void qmp_block_job_complete(const char *device, Error **errp) |
1470 | { | |
1471 | BlockJob *job = find_block_job(device); | |
1472 | ||
1473 | if (!job) { | |
1474 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1475 | return; | |
1476 | } | |
1477 | ||
1478 | trace_qmp_block_job_complete(job); | |
1479 | block_job_complete(job, errp); | |
1480 | } | |
1481 | ||
fb5458cd SH |
1482 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
1483 | { | |
1484 | BlockJobInfoList **prev = opaque; | |
1485 | BlockJob *job = bs->job; | |
1486 | ||
1487 | if (job) { | |
30e628b7 PB |
1488 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
1489 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
1490 | (*prev)->next = elem; |
1491 | *prev = elem; | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
1496 | { | |
1497 | /* Dummy is a fake list element for holding the head pointer */ | |
1498 | BlockJobInfoList dummy = {}; | |
1499 | BlockJobInfoList *prev = &dummy; | |
1500 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
1501 | return dummy.next; | |
1502 | } | |
4d454574 | 1503 | |
0006383e | 1504 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 1505 | .name = "drive", |
0006383e | 1506 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
1507 | .desc = { |
1508 | { | |
1509 | .name = "bus", | |
1510 | .type = QEMU_OPT_NUMBER, | |
1511 | .help = "bus number", | |
1512 | },{ | |
1513 | .name = "unit", | |
1514 | .type = QEMU_OPT_NUMBER, | |
1515 | .help = "unit number (i.e. lun for scsi)", | |
1516 | },{ | |
1517 | .name = "if", | |
1518 | .type = QEMU_OPT_STRING, | |
1519 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
1520 | },{ | |
1521 | .name = "index", | |
1522 | .type = QEMU_OPT_NUMBER, | |
1523 | .help = "index number", | |
1524 | },{ | |
1525 | .name = "cyls", | |
1526 | .type = QEMU_OPT_NUMBER, | |
1527 | .help = "number of cylinders (ide disk geometry)", | |
1528 | },{ | |
1529 | .name = "heads", | |
1530 | .type = QEMU_OPT_NUMBER, | |
1531 | .help = "number of heads (ide disk geometry)", | |
1532 | },{ | |
1533 | .name = "secs", | |
1534 | .type = QEMU_OPT_NUMBER, | |
1535 | .help = "number of sectors (ide disk geometry)", | |
1536 | },{ | |
1537 | .name = "trans", | |
1538 | .type = QEMU_OPT_STRING, | |
1539 | .help = "chs translation (auto, lba. none)", | |
1540 | },{ | |
1541 | .name = "media", | |
1542 | .type = QEMU_OPT_STRING, | |
1543 | .help = "media type (disk, cdrom)", | |
1544 | },{ | |
1545 | .name = "snapshot", | |
1546 | .type = QEMU_OPT_BOOL, | |
1547 | .help = "enable/disable snapshot mode", | |
1548 | },{ | |
1549 | .name = "file", | |
1550 | .type = QEMU_OPT_STRING, | |
1551 | .help = "disk image", | |
a9384aff PB |
1552 | },{ |
1553 | .name = "discard", | |
1554 | .type = QEMU_OPT_STRING, | |
1555 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 PB |
1556 | },{ |
1557 | .name = "cache", | |
1558 | .type = QEMU_OPT_STRING, | |
1559 | .help = "host cache usage (none, writeback, writethrough, " | |
1560 | "directsync, unsafe)", | |
1561 | },{ | |
1562 | .name = "aio", | |
1563 | .type = QEMU_OPT_STRING, | |
1564 | .help = "host AIO implementation (threads, native)", | |
1565 | },{ | |
1566 | .name = "format", | |
1567 | .type = QEMU_OPT_STRING, | |
1568 | .help = "disk format (raw, qcow2, ...)", | |
1569 | },{ | |
1570 | .name = "serial", | |
1571 | .type = QEMU_OPT_STRING, | |
1572 | .help = "disk serial number", | |
1573 | },{ | |
1574 | .name = "rerror", | |
1575 | .type = QEMU_OPT_STRING, | |
1576 | .help = "read error action", | |
1577 | },{ | |
1578 | .name = "werror", | |
1579 | .type = QEMU_OPT_STRING, | |
1580 | .help = "write error action", | |
1581 | },{ | |
1582 | .name = "addr", | |
1583 | .type = QEMU_OPT_STRING, | |
1584 | .help = "pci address (virtio only)", | |
1585 | },{ | |
1586 | .name = "readonly", | |
1587 | .type = QEMU_OPT_BOOL, | |
1588 | .help = "open drive file as read-only", | |
1589 | },{ | |
1590 | .name = "iops", | |
1591 | .type = QEMU_OPT_NUMBER, | |
1592 | .help = "limit total I/O operations per second", | |
1593 | },{ | |
1594 | .name = "iops_rd", | |
1595 | .type = QEMU_OPT_NUMBER, | |
1596 | .help = "limit read operations per second", | |
1597 | },{ | |
1598 | .name = "iops_wr", | |
1599 | .type = QEMU_OPT_NUMBER, | |
1600 | .help = "limit write operations per second", | |
1601 | },{ | |
1602 | .name = "bps", | |
1603 | .type = QEMU_OPT_NUMBER, | |
1604 | .help = "limit total bytes per second", | |
1605 | },{ | |
1606 | .name = "bps_rd", | |
1607 | .type = QEMU_OPT_NUMBER, | |
1608 | .help = "limit read bytes per second", | |
1609 | },{ | |
1610 | .name = "bps_wr", | |
1611 | .type = QEMU_OPT_NUMBER, | |
1612 | .help = "limit write bytes per second", | |
1613 | },{ | |
1614 | .name = "copy-on-read", | |
1615 | .type = QEMU_OPT_BOOL, | |
1616 | .help = "copy read data from backing file into image file", | |
1617 | },{ | |
1618 | .name = "boot", | |
1619 | .type = QEMU_OPT_BOOL, | |
1620 | .help = "(deprecated, ignored)", | |
1621 | }, | |
1622 | { /* end of list */ } | |
1623 | }, | |
1624 | }; | |
0006383e KW |
1625 | |
1626 | QemuOptsList qemu_drive_opts = { | |
1627 | .name = "drive", | |
1628 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
1629 | .desc = { | |
1630 | /* | |
1631 | * no elements => accept any params | |
1632 | * validation will happen later | |
1633 | */ | |
1634 | { /* end of list */ } | |
1635 | }, | |
1636 | }; |