blob: 0bfe38027bde9fed6c33e4cfc5d81b5d859e836b [file] [log] [blame]
Markus Armbruster666daa62010-06-02 18:48:27 +02001/*
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.
Markus Armbruster3618a092013-03-14 13:59:53 +01008 *
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.
Markus Armbruster666daa62010-06-02 18:48:27 +020031 */
32
Paolo Bonzini9c17d612012-12-17 18:20:04 +010033#include "sysemu/blockdev.h"
Paolo Bonzini0d09e412013-02-05 17:06:20 +010034#include "hw/block/block.h"
Paolo Bonzini737e1502012-12-17 18:19:44 +010035#include "block/blockjob.h"
Paolo Bonzini83c90892012-12-17 18:19:49 +010036#include "monitor/monitor.h"
Paolo Bonzini7b1b5d12012-12-17 18:19:43 +010037#include "qapi/qmp/qerror.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010038#include "qemu/option.h"
39#include "qemu/config-file.h"
Paolo Bonzini7b1b5d12012-12-17 18:19:43 +010040#include "qapi/qmp/types.h"
Kevin Wolfd26c9a12013-09-23 15:26:03 +020041#include "qapi-visit.h"
42#include "qapi/qmp-output-visitor.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010043#include "sysemu/sysemu.h"
Paolo Bonzini737e1502012-12-17 18:19:44 +010044#include "block/block_int.h"
Luiz Capitulinoa4dea8a2011-11-23 13:28:21 -020045#include "qmp-commands.h"
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +000046#include "trace.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010047#include "sysemu/arch_init.h"
Markus Armbruster666daa62010-06-02 18:48:27 +020048
Markus Armbrusterc9b62a72010-06-02 18:55:22 +020049static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
Markus Armbruster666daa62010-06-02 18:48:27 +020050
Markus Armbruster19609662011-01-28 11:21:39 +010051static const char *const if_name[IF_COUNT] = {
52 [IF_NONE] = "none",
53 [IF_IDE] = "ide",
54 [IF_SCSI] = "scsi",
55 [IF_FLOPPY] = "floppy",
56 [IF_PFLASH] = "pflash",
57 [IF_MTD] = "mtd",
58 [IF_SD] = "sd",
59 [IF_VIRTIO] = "virtio",
60 [IF_XEN] = "xen",
61};
62
63static const int if_max_devs[IF_COUNT] = {
Markus Armbruster27d6bf42011-01-28 11:21:40 +010064 /*
65 * Do not change these numbers! They govern how drive option
66 * index maps to unit and bus. That mapping is ABI.
67 *
68 * All controllers used to imlement if=T drives need to support
69 * if_max_devs[T] units, for any T with if_max_devs[T] != 0.
70 * Otherwise, some index values map to "impossible" bus, unit
71 * values.
72 *
73 * For instance, if you change [IF_SCSI] to 255, -drive
74 * if=scsi,index=12 no longer means bus=1,unit=5, but
75 * bus=0,unit=12. With an lsi53c895a controller (7 units max),
76 * the drive can't be set up. Regression.
77 */
78 [IF_IDE] = 2,
79 [IF_SCSI] = 7,
Markus Armbruster19609662011-01-28 11:21:39 +010080};
81
Markus Armbruster14bafc52010-06-25 08:09:10 +020082/*
83 * We automatically delete the drive when a device using it gets
84 * unplugged. Questionable feature, but we can't just drop it.
85 * Device models call blockdev_mark_auto_del() to schedule the
86 * automatic deletion, and generic qdev code calls blockdev_auto_del()
87 * when deletion is actually safe.
88 */
89void blockdev_mark_auto_del(BlockDriverState *bs)
90{
91 DriveInfo *dinfo = drive_get_by_blockdev(bs);
92
Kevin Wolf2d246f02013-09-18 15:14:47 +020093 if (dinfo && !dinfo->enable_auto_del) {
94 return;
95 }
96
Paolo Bonzini12bde0e2012-03-30 13:17:10 +020097 if (bs->job) {
98 block_job_cancel(bs->job);
99 }
Ryan Harper0fc0f1f2010-12-08 10:05:00 -0600100 if (dinfo) {
101 dinfo->auto_del = 1;
102 }
Markus Armbruster14bafc52010-06-25 08:09:10 +0200103}
104
105void blockdev_auto_del(BlockDriverState *bs)
106{
107 DriveInfo *dinfo = drive_get_by_blockdev(bs);
108
Ryan Harper0fc0f1f2010-12-08 10:05:00 -0600109 if (dinfo && dinfo->auto_del) {
Marcelo Tosatti84fb3922011-01-26 12:12:32 -0200110 drive_put_ref(dinfo);
Markus Armbruster14bafc52010-06-25 08:09:10 +0200111 }
112}
113
Markus Armbruster505a7fb2011-01-28 11:21:43 +0100114static int drive_index_to_bus_id(BlockInterfaceType type, int index)
115{
116 int max_devs = if_max_devs[type];
117 return max_devs ? index / max_devs : 0;
118}
119
120static int drive_index_to_unit_id(BlockInterfaceType type, int index)
121{
122 int max_devs = if_max_devs[type];
123 return max_devs ? index % max_devs : index;
124}
125
Markus Armbruster2292dda2011-01-28 11:21:41 +0100126QemuOpts *drive_def(const char *optstr)
127{
128 return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0);
129}
130
131QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
Markus Armbruster5645b0f2011-01-31 11:50:09 +0100132 const char *optstr)
Markus Armbruster666daa62010-06-02 18:48:27 +0200133{
Markus Armbruster666daa62010-06-02 18:48:27 +0200134 QemuOpts *opts;
Markus Armbruster2292dda2011-01-28 11:21:41 +0100135 char buf[32];
Markus Armbruster666daa62010-06-02 18:48:27 +0200136
Markus Armbruster2292dda2011-01-28 11:21:41 +0100137 opts = drive_def(optstr);
Markus Armbruster666daa62010-06-02 18:48:27 +0200138 if (!opts) {
139 return NULL;
140 }
Markus Armbruster2292dda2011-01-28 11:21:41 +0100141 if (type != IF_DEFAULT) {
142 qemu_opt_set(opts, "if", if_name[type]);
143 }
144 if (index >= 0) {
145 snprintf(buf, sizeof(buf), "%d", index);
146 qemu_opt_set(opts, "index", buf);
147 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200148 if (file)
149 qemu_opt_set(opts, "file", file);
150 return opts;
151}
152
153DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
154{
155 DriveInfo *dinfo;
156
157 /* seek interface, bus and unit */
158
159 QTAILQ_FOREACH(dinfo, &drives, next) {
160 if (dinfo->type == type &&
161 dinfo->bus == bus &&
162 dinfo->unit == unit)
163 return dinfo;
164 }
165
166 return NULL;
167}
168
Markus Armbrusterf1bd51a2011-01-28 11:21:44 +0100169DriveInfo *drive_get_by_index(BlockInterfaceType type, int index)
170{
171 return drive_get(type,
172 drive_index_to_bus_id(type, index),
173 drive_index_to_unit_id(type, index));
174}
175
Markus Armbruster666daa62010-06-02 18:48:27 +0200176int drive_get_max_bus(BlockInterfaceType type)
177{
178 int max_bus;
179 DriveInfo *dinfo;
180
181 max_bus = -1;
182 QTAILQ_FOREACH(dinfo, &drives, next) {
183 if(dinfo->type == type &&
184 dinfo->bus > max_bus)
185 max_bus = dinfo->bus;
186 }
187 return max_bus;
188}
189
Markus Armbruster13839972011-01-28 11:21:37 +0100190/* Get a block device. This should only be used for single-drive devices
191 (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the
192 appropriate bus. */
193DriveInfo *drive_get_next(BlockInterfaceType type)
194{
195 static int next_block_unit[IF_COUNT];
196
197 return drive_get(type, 0, next_block_unit[type]++);
198}
199
Markus Armbrustere4700e52010-06-24 17:25:32 +0200200DriveInfo *drive_get_by_blockdev(BlockDriverState *bs)
Markus Armbruster666daa62010-06-02 18:48:27 +0200201{
202 DriveInfo *dinfo;
203
204 QTAILQ_FOREACH(dinfo, &drives, next) {
Markus Armbrustere4700e52010-06-24 17:25:32 +0200205 if (dinfo->bdrv == bs) {
206 return dinfo;
207 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200208 }
Markus Armbrustere4700e52010-06-24 17:25:32 +0200209 return NULL;
Markus Armbruster666daa62010-06-02 18:48:27 +0200210}
211
Markus Armbruster666daa62010-06-02 18:48:27 +0200212static void bdrv_format_print(void *opaque, const char *name)
213{
Markus Armbruster807105a2011-01-17 19:31:27 +0100214 error_printf(" %s", name);
Markus Armbruster666daa62010-06-02 18:48:27 +0200215}
216
Marcelo Tosatti84fb3922011-01-26 12:12:32 -0200217static void drive_uninit(DriveInfo *dinfo)
Markus Armbruster666daa62010-06-02 18:48:27 +0200218{
Kevin Wolff298d072013-09-10 12:01:20 +0200219 if (dinfo->opts) {
220 qemu_opts_del(dinfo->opts);
221 }
222
Fam Zheng4f6fd342013-08-23 09:14:47 +0800223 bdrv_unref(dinfo->bdrv);
Anthony Liguori7267c092011-08-20 22:09:37 -0500224 g_free(dinfo->id);
Markus Armbruster666daa62010-06-02 18:48:27 +0200225 QTAILQ_REMOVE(&drives, dinfo, next);
Kevin Wolfbb446192013-03-15 10:35:06 +0100226 g_free(dinfo->serial);
Anthony Liguori7267c092011-08-20 22:09:37 -0500227 g_free(dinfo);
Markus Armbruster666daa62010-06-02 18:48:27 +0200228}
229
Marcelo Tosatti84fb3922011-01-26 12:12:32 -0200230void drive_put_ref(DriveInfo *dinfo)
231{
232 assert(dinfo->refcount);
233 if (--dinfo->refcount == 0) {
234 drive_uninit(dinfo);
235 }
236}
237
238void drive_get_ref(DriveInfo *dinfo)
239{
240 dinfo->refcount++;
241}
242
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000243typedef struct {
244 QEMUBH *bh;
Fam Zhengfa510eb2013-08-23 09:14:51 +0800245 BlockDriverState *bs;
246} BDRVPutRefBH;
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000247
Fam Zhengfa510eb2013-08-23 09:14:51 +0800248static void bdrv_put_ref_bh(void *opaque)
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000249{
Fam Zhengfa510eb2013-08-23 09:14:51 +0800250 BDRVPutRefBH *s = opaque;
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000251
Fam Zhengfa510eb2013-08-23 09:14:51 +0800252 bdrv_unref(s->bs);
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000253 qemu_bh_delete(s->bh);
254 g_free(s);
255}
256
257/*
Fam Zhengfa510eb2013-08-23 09:14:51 +0800258 * Release a BDS reference in a BH
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000259 *
Fam Zhengfa510eb2013-08-23 09:14:51 +0800260 * It is not safe to use bdrv_unref() from a callback function when the callers
261 * still need the BlockDriverState. In such cases we schedule a BH to release
262 * the reference.
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000263 */
Fam Zhengfa510eb2013-08-23 09:14:51 +0800264static void bdrv_put_ref_bh_schedule(BlockDriverState *bs)
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000265{
Fam Zhengfa510eb2013-08-23 09:14:51 +0800266 BDRVPutRefBH *s;
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000267
Fam Zhengfa510eb2013-08-23 09:14:51 +0800268 s = g_new(BDRVPutRefBH, 1);
269 s->bh = qemu_bh_new(bdrv_put_ref_bh, s);
270 s->bs = bs;
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000271 qemu_bh_schedule(s->bh);
272}
273
Kevin Wolfb6810722013-09-20 11:33:11 +0200274static int parse_block_error_action(const char *buf, bool is_read, Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +0200275{
276 if (!strcmp(buf, "ignore")) {
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200277 return BLOCKDEV_ON_ERROR_IGNORE;
Markus Armbruster666daa62010-06-02 18:48:27 +0200278 } else if (!is_read && !strcmp(buf, "enospc")) {
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200279 return BLOCKDEV_ON_ERROR_ENOSPC;
Markus Armbruster666daa62010-06-02 18:48:27 +0200280 } else if (!strcmp(buf, "stop")) {
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200281 return BLOCKDEV_ON_ERROR_STOP;
Markus Armbruster666daa62010-06-02 18:48:27 +0200282 } else if (!strcmp(buf, "report")) {
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200283 return BLOCKDEV_ON_ERROR_REPORT;
Markus Armbruster666daa62010-06-02 18:48:27 +0200284 } else {
Kevin Wolfb6810722013-09-20 11:33:11 +0200285 error_setg(errp, "'%s' invalid %s error action",
286 buf, is_read ? "read" : "write");
Markus Armbruster666daa62010-06-02 18:48:27 +0200287 return -1;
288 }
289}
290
Benoît Canetcc0681c2013-09-02 14:14:39 +0200291static bool check_throttle_config(ThrottleConfig *cfg, Error **errp)
Zhi Yong Wu0563e192011-11-03 16:57:25 +0800292{
Benoît Canetcc0681c2013-09-02 14:14:39 +0200293 if (throttle_conflicting(cfg)) {
294 error_setg(errp, "bps/iops/max total values and read/write values"
295 " cannot be used at the same time");
Zhi Yong Wu0563e192011-11-03 16:57:25 +0800296 return false;
297 }
298
Benoît Canetcc0681c2013-09-02 14:14:39 +0200299 if (!throttle_is_valid(cfg)) {
300 error_setg(errp, "bps/iops/maxs values must be 0 or greater");
Stefan Hajnoczi7d81c142013-02-13 16:53:43 +0100301 return false;
302 }
303
Zhi Yong Wu0563e192011-11-03 16:57:25 +0800304 return true;
305}
306
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200307typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType;
308
Kevin Wolff298d072013-09-10 12:01:20 +0200309/* Takes the ownership of bs_opts */
Max Reitzd095b462013-12-20 19:28:14 +0100310static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
Kevin Wolfb6810722013-09-20 11:33:11 +0200311 BlockInterfaceType type,
312 Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +0200313{
314 const char *buf;
Markus Armbruster666daa62010-06-02 18:48:27 +0200315 const char *serial;
Markus Armbruster666daa62010-06-02 18:48:27 +0200316 int ro = 0;
317 int bdrv_flags = 0;
318 int on_read_error, on_write_error;
Markus Armbruster666daa62010-06-02 18:48:27 +0200319 DriveInfo *dinfo;
Benoît Canetcc0681c2013-09-02 14:14:39 +0200320 ThrottleConfig cfg;
Markus Armbruster666daa62010-06-02 18:48:27 +0200321 int snapshot = 0;
Stefan Hajnoczifb0490f2011-11-17 13:40:32 +0000322 bool copy_on_read;
Markus Armbruster666daa62010-06-02 18:48:27 +0200323 int ret;
Stefan Hajnoczic5461942013-02-13 16:53:42 +0100324 Error *error = NULL;
Kevin Wolf00063832013-03-15 10:35:07 +0100325 QemuOpts *opts;
Kevin Wolf00063832013-03-15 10:35:07 +0100326 const char *id;
Kevin Wolf74fe54f2013-07-09 11:09:02 +0200327 bool has_driver_specific_opts;
Mike Qiu6db5f5d2013-08-08 10:45:16 -0400328 BlockDriver *drv = NULL;
Markus Armbruster666daa62010-06-02 18:48:27 +0200329
Kevin Wolff298d072013-09-10 12:01:20 +0200330 /* Check common options by copying from bs_opts to opts, all other options
331 * stay in bs_opts for processing by bdrv_open(). */
332 id = qdict_get_try_str(bs_opts, "id");
Kevin Wolf00063832013-03-15 10:35:07 +0100333 opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error);
334 if (error_is_set(&error)) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200335 error_propagate(errp, error);
Kevin Wolf00063832013-03-15 10:35:07 +0100336 return NULL;
337 }
338
Kevin Wolf00063832013-03-15 10:35:07 +0100339 qemu_opts_absorb_qdict(opts, bs_opts, &error);
340 if (error_is_set(&error)) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200341 error_propagate(errp, error);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100342 goto early_err;
Kevin Wolf00063832013-03-15 10:35:07 +0100343 }
344
345 if (id) {
346 qdict_del(bs_opts, "id");
347 }
348
Kevin Wolf74fe54f2013-07-09 11:09:02 +0200349 has_driver_specific_opts = !!qdict_size(bs_opts);
350
Markus Armbruster666daa62010-06-02 18:48:27 +0200351 /* extract parameters */
Markus Armbruster666daa62010-06-02 18:48:27 +0200352 snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
Kevin Wolf0f227a92013-07-19 20:07:29 +0200353 ro = qemu_opt_get_bool(opts, "read-only", 0);
Stefan Hajnoczifb0490f2011-11-17 13:40:32 +0000354 copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false);
Markus Armbruster666daa62010-06-02 18:48:27 +0200355
Markus Armbruster666daa62010-06-02 18:48:27 +0200356 serial = qemu_opt_get(opts, "serial");
357
Paolo Bonzinia9384af2013-02-08 14:06:12 +0100358 if ((buf = qemu_opt_get(opts, "discard")) != NULL) {
359 if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200360 error_setg(errp, "invalid discard option");
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100361 goto early_err;
Paolo Bonzinia9384af2013-02-08 14:06:12 +0100362 }
363 }
364
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200365 if (qemu_opt_get_bool(opts, "cache.writeback", true)) {
366 bdrv_flags |= BDRV_O_CACHE_WB;
367 }
368 if (qemu_opt_get_bool(opts, "cache.direct", false)) {
369 bdrv_flags |= BDRV_O_NOCACHE;
370 }
Paolo Bonzini1df6fa42013-09-19 18:48:53 +0200371 if (qemu_opt_get_bool(opts, "cache.no-flush", false)) {
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200372 bdrv_flags |= BDRV_O_NO_FLUSH;
Markus Armbruster666daa62010-06-02 18:48:27 +0200373 }
374
375#ifdef CONFIG_LINUX_AIO
376 if ((buf = qemu_opt_get(opts, "aio")) != NULL) {
377 if (!strcmp(buf, "native")) {
378 bdrv_flags |= BDRV_O_NATIVE_AIO;
379 } else if (!strcmp(buf, "threads")) {
380 /* this is the default */
381 } else {
Kevin Wolfb6810722013-09-20 11:33:11 +0200382 error_setg(errp, "invalid aio option");
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100383 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200384 }
385 }
386#endif
387
388 if ((buf = qemu_opt_get(opts, "format")) != NULL) {
Peter Maydellc8057f92012-08-02 13:45:54 +0100389 if (is_help_option(buf)) {
390 error_printf("Supported formats:");
391 bdrv_iterate_format(bdrv_format_print, NULL);
392 error_printf("\n");
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100393 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200394 }
Kevin Wolf74fe54f2013-07-09 11:09:02 +0200395
Kevin Wolf8f94a6e2013-10-10 11:45:55 +0200396 drv = bdrv_find_format(buf);
Mike Qiu6db5f5d2013-08-08 10:45:16 -0400397 if (!drv) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200398 error_setg(errp, "'%s' invalid format", buf);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100399 goto early_err;
Mike Qiu6db5f5d2013-08-08 10:45:16 -0400400 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200401 }
402
Zhi Yong Wu0563e192011-11-03 16:57:25 +0800403 /* disk I/O throttling */
Benoît Canetcc0681c2013-09-02 14:14:39 +0200404 memset(&cfg, 0, sizeof(cfg));
405 cfg.buckets[THROTTLE_BPS_TOTAL].avg =
Kevin Wolf57975222013-07-17 14:41:54 +0200406 qemu_opt_get_number(opts, "throttling.bps-total", 0);
Benoît Canetcc0681c2013-09-02 14:14:39 +0200407 cfg.buckets[THROTTLE_BPS_READ].avg =
Kevin Wolf57975222013-07-17 14:41:54 +0200408 qemu_opt_get_number(opts, "throttling.bps-read", 0);
Benoît Canetcc0681c2013-09-02 14:14:39 +0200409 cfg.buckets[THROTTLE_BPS_WRITE].avg =
Kevin Wolf57975222013-07-17 14:41:54 +0200410 qemu_opt_get_number(opts, "throttling.bps-write", 0);
Benoît Canetcc0681c2013-09-02 14:14:39 +0200411 cfg.buckets[THROTTLE_OPS_TOTAL].avg =
Kevin Wolf57975222013-07-17 14:41:54 +0200412 qemu_opt_get_number(opts, "throttling.iops-total", 0);
Benoît Canetcc0681c2013-09-02 14:14:39 +0200413 cfg.buckets[THROTTLE_OPS_READ].avg =
Kevin Wolf57975222013-07-17 14:41:54 +0200414 qemu_opt_get_number(opts, "throttling.iops-read", 0);
Benoît Canetcc0681c2013-09-02 14:14:39 +0200415 cfg.buckets[THROTTLE_OPS_WRITE].avg =
Kevin Wolf57975222013-07-17 14:41:54 +0200416 qemu_opt_get_number(opts, "throttling.iops-write", 0);
Zhi Yong Wu0563e192011-11-03 16:57:25 +0800417
Benoît Canet3e9fab62013-09-02 14:14:40 +0200418 cfg.buckets[THROTTLE_BPS_TOTAL].max =
419 qemu_opt_get_number(opts, "throttling.bps-total-max", 0);
420 cfg.buckets[THROTTLE_BPS_READ].max =
421 qemu_opt_get_number(opts, "throttling.bps-read-max", 0);
422 cfg.buckets[THROTTLE_BPS_WRITE].max =
423 qemu_opt_get_number(opts, "throttling.bps-write-max", 0);
424 cfg.buckets[THROTTLE_OPS_TOTAL].max =
425 qemu_opt_get_number(opts, "throttling.iops-total-max", 0);
426 cfg.buckets[THROTTLE_OPS_READ].max =
427 qemu_opt_get_number(opts, "throttling.iops-read-max", 0);
428 cfg.buckets[THROTTLE_OPS_WRITE].max =
429 qemu_opt_get_number(opts, "throttling.iops-write-max", 0);
Benoît Canetcc0681c2013-09-02 14:14:39 +0200430
Benoît Canet2024c1d2013-09-02 14:14:41 +0200431 cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0);
Benoît Canetcc0681c2013-09-02 14:14:39 +0200432
433 if (!check_throttle_config(&cfg, &error)) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200434 error_propagate(errp, error);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100435 goto early_err;
Zhi Yong Wu0563e192011-11-03 16:57:25 +0800436 }
437
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200438 on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
Markus Armbruster666daa62010-06-02 18:48:27 +0200439 if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
440 if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200441 error_setg(errp, "werror is not supported by this bus type");
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100442 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200443 }
444
Kevin Wolfb6810722013-09-20 11:33:11 +0200445 on_write_error = parse_block_error_action(buf, 0, &error);
446 if (error_is_set(&error)) {
447 error_propagate(errp, error);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100448 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200449 }
450 }
451
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200452 on_read_error = BLOCKDEV_ON_ERROR_REPORT;
Markus Armbruster666daa62010-06-02 18:48:27 +0200453 if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
Kevin Wolf5dba48a2010-10-25 14:52:21 +0200454 if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) {
Markus Armbruster807105a2011-01-17 19:31:27 +0100455 error_report("rerror is not supported by this bus type");
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100456 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200457 }
458
Kevin Wolfb6810722013-09-20 11:33:11 +0200459 on_read_error = parse_block_error_action(buf, 1, &error);
460 if (error_is_set(&error)) {
461 error_propagate(errp, error);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100462 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200463 }
464 }
465
Kevin Wolf326642b2013-07-11 12:52:34 +0200466 /* init */
467 dinfo = g_malloc0(sizeof(*dinfo));
468 dinfo->id = g_strdup(qemu_opts_id(opts));
Markus Armbruster666daa62010-06-02 18:48:27 +0200469 dinfo->bdrv = bdrv_new(dinfo->id);
Kevin Shanahan80dd1aa2012-09-21 08:50:22 +0930470 dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
471 dinfo->bdrv->read_only = ro;
Markus Armbruster666daa62010-06-02 18:48:27 +0200472 dinfo->type = type;
Marcelo Tosatti84fb3922011-01-26 12:12:32 -0200473 dinfo->refcount = 1;
Kevin Wolfbb446192013-03-15 10:35:06 +0100474 if (serial != NULL) {
475 dinfo->serial = g_strdup(serial);
476 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200477 QTAILQ_INSERT_TAIL(&drives, dinfo, next);
478
Markus Armbrusterabd7f682010-06-02 18:55:17 +0200479 bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error);
480
Zhi Yong Wu0563e192011-11-03 16:57:25 +0800481 /* disk I/O throttling */
Benoît Canetcc0681c2013-09-02 14:14:39 +0200482 if (throttle_enabled(&cfg)) {
483 bdrv_io_limits_enable(dinfo->bdrv);
484 bdrv_set_io_limits(dinfo->bdrv, &cfg);
485 }
Zhi Yong Wu0563e192011-11-03 16:57:25 +0800486
Markus Armbrusterdd5b0d72010-05-11 15:36:46 +0200487 if (!file || !*file) {
Kevin Wolf74fe54f2013-07-09 11:09:02 +0200488 if (has_driver_specific_opts) {
Kevin Wolfc2ad1b02013-03-18 16:40:51 +0100489 file = NULL;
490 } else {
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100491 QDECREF(bs_opts);
492 qemu_opts_del(opts);
Kevin Wolfc2ad1b02013-03-18 16:40:51 +0100493 return dinfo;
494 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200495 }
496 if (snapshot) {
497 /* always use cache=unsafe with snapshot */
498 bdrv_flags &= ~BDRV_O_CACHE_MASK;
499 bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH);
500 }
501
Stefan Hajnoczifb0490f2011-11-17 13:40:32 +0000502 if (copy_on_read) {
503 bdrv_flags |= BDRV_O_COPY_ON_READ;
504 }
505
Benoît Caneted9d4202012-03-23 08:36:50 +0100506 if (runstate_check(RUN_STATE_INMIGRATE)) {
507 bdrv_flags |= BDRV_O_INCOMING;
508 }
509
Markus Armbruster666daa62010-06-02 18:48:27 +0200510 bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
511
Kevin Wolf74fe54f2013-07-09 11:09:02 +0200512 QINCREF(bs_opts);
Max Reitz34b5d2c2013-09-05 14:45:29 +0200513 ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv, &error);
Kevin Wolf00063832013-03-15 10:35:07 +0100514
Markus Armbruster666daa62010-06-02 18:48:27 +0200515 if (ret < 0) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200516 error_setg(errp, "could not open disk image %s: %s",
517 file ?: dinfo->id, error_get_pretty(error));
518 error_free(error);
Markus Armbrustera9ae2bf2011-02-08 15:12:39 +0100519 goto err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200520 }
521
522 if (bdrv_key_required(dinfo->bdrv))
523 autostart = 0;
Kevin Wolf00063832013-03-15 10:35:07 +0100524
Kevin Wolf74fe54f2013-07-09 11:09:02 +0200525 QDECREF(bs_opts);
Kevin Wolf00063832013-03-15 10:35:07 +0100526 qemu_opts_del(opts);
527
Markus Armbruster666daa62010-06-02 18:48:27 +0200528 return dinfo;
Markus Armbrustera9ae2bf2011-02-08 15:12:39 +0100529
530err:
Fam Zheng4f6fd342013-08-23 09:14:47 +0800531 bdrv_unref(dinfo->bdrv);
Anthony Liguori7267c092011-08-20 22:09:37 -0500532 g_free(dinfo->id);
Markus Armbrustera9ae2bf2011-02-08 15:12:39 +0100533 QTAILQ_REMOVE(&drives, dinfo, next);
Anthony Liguori7267c092011-08-20 22:09:37 -0500534 g_free(dinfo);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100535early_err:
536 QDECREF(bs_opts);
537 qemu_opts_del(opts);
Markus Armbrustera9ae2bf2011-02-08 15:12:39 +0100538 return NULL;
Markus Armbruster666daa62010-06-02 18:48:27 +0200539}
540
Kevin Wolf57975222013-07-17 14:41:54 +0200541static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to)
542{
543 const char *value;
544
545 value = qemu_opt_get(opts, from);
546 if (value) {
547 qemu_opt_set(opts, to, value);
548 qemu_opt_unset(opts, from);
549 }
550}
551
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200552QemuOptsList qemu_legacy_drive_opts = {
553 .name = "drive",
554 .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head),
555 .desc = {
556 {
Kevin Wolf87a899c2013-09-10 15:48:13 +0200557 .name = "bus",
558 .type = QEMU_OPT_NUMBER,
559 .help = "bus number",
560 },{
561 .name = "unit",
562 .type = QEMU_OPT_NUMBER,
563 .help = "unit number (i.e. lun for scsi)",
564 },{
565 .name = "index",
566 .type = QEMU_OPT_NUMBER,
567 .help = "index number",
568 },{
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200569 .name = "media",
570 .type = QEMU_OPT_STRING,
571 .help = "media type (disk, cdrom)",
Kevin Wolf593d4642013-08-28 17:24:51 +0200572 },{
573 .name = "if",
574 .type = QEMU_OPT_STRING,
575 .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
Kevin Wolfb41a7332013-09-09 16:49:49 +0200576 },{
577 .name = "cyls",
578 .type = QEMU_OPT_NUMBER,
579 .help = "number of cylinders (ide disk geometry)",
580 },{
581 .name = "heads",
582 .type = QEMU_OPT_NUMBER,
583 .help = "number of heads (ide disk geometry)",
584 },{
585 .name = "secs",
586 .type = QEMU_OPT_NUMBER,
587 .help = "number of sectors (ide disk geometry)",
588 },{
589 .name = "trans",
590 .type = QEMU_OPT_STRING,
591 .help = "chs translation (auto, lba, none)",
Kevin Wolf26929292013-09-09 17:01:03 +0200592 },{
593 .name = "boot",
594 .type = QEMU_OPT_BOOL,
595 .help = "(deprecated, ignored)",
Kevin Wolf394c7d42013-09-13 14:09:17 +0200596 },{
597 .name = "addr",
598 .type = QEMU_OPT_STRING,
599 .help = "pci address (virtio only)",
Max Reitzd095b462013-12-20 19:28:14 +0100600 },{
601 .name = "file",
602 .type = QEMU_OPT_STRING,
603 .help = "file name",
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200604 },
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200605
606 /* Options that are passed on, but have special semantics with -drive */
607 {
608 .name = "read-only",
609 .type = QEMU_OPT_BOOL,
610 .help = "open drive file as read-only",
611 },{
612 .name = "copy-on-read",
613 .type = QEMU_OPT_BOOL,
614 .help = "copy read data from backing file into image file",
615 },
616
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200617 { /* end of list */ }
618 },
619};
620
Kevin Wolf57975222013-07-17 14:41:54 +0200621DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
622{
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200623 const char *value;
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200624 DriveInfo *dinfo = NULL;
Kevin Wolff298d072013-09-10 12:01:20 +0200625 QDict *bs_opts;
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200626 QemuOpts *legacy_opts;
627 DriveMediaType media = MEDIA_DISK;
Kevin Wolf593d4642013-08-28 17:24:51 +0200628 BlockInterfaceType type;
Kevin Wolfb41a7332013-09-09 16:49:49 +0200629 int cyls, heads, secs, translation;
Kevin Wolf87a899c2013-09-10 15:48:13 +0200630 int max_devs, bus_id, unit_id, index;
Kevin Wolf394c7d42013-09-13 14:09:17 +0200631 const char *devaddr;
Fam Zhenga7fdbcf2013-10-15 17:45:50 +0800632 bool read_only = false;
633 bool copy_on_read;
Max Reitzd095b462013-12-20 19:28:14 +0100634 const char *filename;
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200635 Error *local_err = NULL;
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200636
Kevin Wolf57975222013-07-17 14:41:54 +0200637 /* Change legacy command line options into QMP ones */
638 qemu_opt_rename(all_opts, "iops", "throttling.iops-total");
639 qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read");
640 qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write");
641
642 qemu_opt_rename(all_opts, "bps", "throttling.bps-total");
643 qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read");
644 qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write");
645
Benoît Canet3e9fab62013-09-02 14:14:40 +0200646 qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max");
647 qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max");
648 qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max");
649
650 qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max");
651 qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max");
652 qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max");
653
Benoît Canet2024c1d2013-09-02 14:14:41 +0200654 qemu_opt_rename(all_opts,
655 "iops_size", "throttling.iops-size");
656
Kevin Wolf0f227a92013-07-19 20:07:29 +0200657 qemu_opt_rename(all_opts, "readonly", "read-only");
658
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200659 value = qemu_opt_get(all_opts, "cache");
660 if (value) {
661 int flags = 0;
662
663 if (bdrv_parse_cache_flags(value, &flags) != 0) {
664 error_report("invalid cache option");
665 return NULL;
666 }
667
668 /* Specific options take precedence */
669 if (!qemu_opt_get(all_opts, "cache.writeback")) {
670 qemu_opt_set_bool(all_opts, "cache.writeback",
671 !!(flags & BDRV_O_CACHE_WB));
672 }
673 if (!qemu_opt_get(all_opts, "cache.direct")) {
674 qemu_opt_set_bool(all_opts, "cache.direct",
675 !!(flags & BDRV_O_NOCACHE));
676 }
677 if (!qemu_opt_get(all_opts, "cache.no-flush")) {
678 qemu_opt_set_bool(all_opts, "cache.no-flush",
679 !!(flags & BDRV_O_NO_FLUSH));
680 }
681 qemu_opt_unset(all_opts, "cache");
682 }
683
Kevin Wolff298d072013-09-10 12:01:20 +0200684 /* Get a QDict for processing the options */
685 bs_opts = qdict_new();
686 qemu_opts_to_qdict(all_opts, bs_opts);
687
Peter Crosthwaite87ea75d2014-01-01 18:49:17 -0800688 legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0,
689 &error_abort);
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200690 qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err);
691 if (error_is_set(&local_err)) {
692 qerror_report_err(local_err);
693 error_free(local_err);
694 goto fail;
695 }
696
Kevin Wolf26929292013-09-09 17:01:03 +0200697 /* Deprecated option boot=[on|off] */
698 if (qemu_opt_get(legacy_opts, "boot") != NULL) {
699 fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be "
700 "ignored. Future versions will reject this parameter. Please "
701 "update your scripts.\n");
702 }
703
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200704 /* Media type */
705 value = qemu_opt_get(legacy_opts, "media");
706 if (value) {
707 if (!strcmp(value, "disk")) {
708 media = MEDIA_DISK;
709 } else if (!strcmp(value, "cdrom")) {
710 media = MEDIA_CDROM;
Fam Zhenga7fdbcf2013-10-15 17:45:50 +0800711 read_only = true;
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200712 } else {
713 error_report("'%s' invalid media", value);
714 goto fail;
715 }
716 }
717
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200718 /* copy-on-read is disabled with a warning for read-only devices */
Fam Zhenga7fdbcf2013-10-15 17:45:50 +0800719 read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false);
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200720 copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false);
721
722 if (read_only && copy_on_read) {
723 error_report("warning: disabling copy-on-read on read-only drive");
724 copy_on_read = false;
725 }
726
727 qdict_put(bs_opts, "read-only",
728 qstring_from_str(read_only ? "on" : "off"));
729 qdict_put(bs_opts, "copy-on-read",
730 qstring_from_str(copy_on_read ? "on" :"off"));
731
Kevin Wolf593d4642013-08-28 17:24:51 +0200732 /* Controller type */
733 value = qemu_opt_get(legacy_opts, "if");
734 if (value) {
735 for (type = 0;
736 type < IF_COUNT && strcmp(value, if_name[type]);
737 type++) {
738 }
739 if (type == IF_COUNT) {
740 error_report("unsupported bus type '%s'", value);
741 goto fail;
742 }
743 } else {
744 type = block_default_type;
745 }
746
Kevin Wolfb41a7332013-09-09 16:49:49 +0200747 /* Geometry */
748 cyls = qemu_opt_get_number(legacy_opts, "cyls", 0);
749 heads = qemu_opt_get_number(legacy_opts, "heads", 0);
750 secs = qemu_opt_get_number(legacy_opts, "secs", 0);
751
752 if (cyls || heads || secs) {
753 if (cyls < 1) {
754 error_report("invalid physical cyls number");
755 goto fail;
756 }
757 if (heads < 1) {
758 error_report("invalid physical heads number");
759 goto fail;
760 }
761 if (secs < 1) {
762 error_report("invalid physical secs number");
763 goto fail;
764 }
765 }
766
767 translation = BIOS_ATA_TRANSLATION_AUTO;
768 value = qemu_opt_get(legacy_opts, "trans");
769 if (value != NULL) {
770 if (!cyls) {
771 error_report("'%s' trans must be used with cyls, heads and secs",
772 value);
773 goto fail;
774 }
775 if (!strcmp(value, "none")) {
776 translation = BIOS_ATA_TRANSLATION_NONE;
777 } else if (!strcmp(value, "lba")) {
778 translation = BIOS_ATA_TRANSLATION_LBA;
779 } else if (!strcmp(value, "auto")) {
780 translation = BIOS_ATA_TRANSLATION_AUTO;
781 } else {
782 error_report("'%s' invalid translation type", value);
783 goto fail;
784 }
785 }
786
787 if (media == MEDIA_CDROM) {
788 if (cyls || secs || heads) {
789 error_report("CHS can't be set with media=cdrom");
790 goto fail;
791 }
792 }
793
Kevin Wolf87a899c2013-09-10 15:48:13 +0200794 /* Device address specified by bus/unit or index.
795 * If none was specified, try to find the first free one. */
796 bus_id = qemu_opt_get_number(legacy_opts, "bus", 0);
797 unit_id = qemu_opt_get_number(legacy_opts, "unit", -1);
798 index = qemu_opt_get_number(legacy_opts, "index", -1);
799
800 max_devs = if_max_devs[type];
801
802 if (index != -1) {
803 if (bus_id != 0 || unit_id != -1) {
804 error_report("index cannot be used with bus and unit");
805 goto fail;
806 }
807 bus_id = drive_index_to_bus_id(type, index);
808 unit_id = drive_index_to_unit_id(type, index);
809 }
810
811 if (unit_id == -1) {
812 unit_id = 0;
813 while (drive_get(type, bus_id, unit_id) != NULL) {
814 unit_id++;
815 if (max_devs && unit_id >= max_devs) {
816 unit_id -= max_devs;
817 bus_id++;
818 }
819 }
820 }
821
822 if (max_devs && unit_id >= max_devs) {
823 error_report("unit %d too big (max is %d)", unit_id, max_devs - 1);
824 goto fail;
825 }
826
827 if (drive_get(type, bus_id, unit_id) != NULL) {
828 error_report("drive with bus=%d, unit=%d (index=%d) exists",
829 bus_id, unit_id, index);
830 goto fail;
831 }
832
833 /* no id supplied -> create one */
834 if (qemu_opts_id(all_opts) == NULL) {
835 char *new_id;
836 const char *mediastr = "";
837 if (type == IF_IDE || type == IF_SCSI) {
838 mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
839 }
840 if (max_devs) {
841 new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id,
842 mediastr, unit_id);
843 } else {
844 new_id = g_strdup_printf("%s%s%i", if_name[type],
845 mediastr, unit_id);
846 }
847 qdict_put(bs_opts, "id", qstring_from_str(new_id));
848 g_free(new_id);
849 }
850
Kevin Wolf394c7d42013-09-13 14:09:17 +0200851 /* Add virtio block device */
852 devaddr = qemu_opt_get(legacy_opts, "addr");
853 if (devaddr && type != IF_VIRTIO) {
854 error_report("addr is not supported by this bus type");
855 goto fail;
856 }
857
858 if (type == IF_VIRTIO) {
859 QemuOpts *devopts;
Peter Crosthwaite87ea75d2014-01-01 18:49:17 -0800860 devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
861 &error_abort);
Kevin Wolf394c7d42013-09-13 14:09:17 +0200862 if (arch_type == QEMU_ARCH_S390X) {
863 qemu_opt_set(devopts, "driver", "virtio-blk-s390");
864 } else {
865 qemu_opt_set(devopts, "driver", "virtio-blk-pci");
866 }
867 qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"));
868 if (devaddr) {
869 qemu_opt_set(devopts, "addr", devaddr);
870 }
871 }
872
Max Reitzd095b462013-12-20 19:28:14 +0100873 filename = qemu_opt_get(legacy_opts, "file");
874
Kevin Wolf2d246f02013-09-18 15:14:47 +0200875 /* Actual block device init: Functionality shared with blockdev-add */
Max Reitzd095b462013-12-20 19:28:14 +0100876 dinfo = blockdev_init(filename, bs_opts, type, &local_err);
Kevin Wolf2d246f02013-09-18 15:14:47 +0200877 if (dinfo == NULL) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200878 if (error_is_set(&local_err)) {
879 qerror_report_err(local_err);
880 error_free(local_err);
881 }
Kevin Wolf2d246f02013-09-18 15:14:47 +0200882 goto fail;
Kevin Wolfb6810722013-09-20 11:33:11 +0200883 } else {
884 assert(!error_is_set(&local_err));
Kevin Wolf2d246f02013-09-18 15:14:47 +0200885 }
886
887 /* Set legacy DriveInfo fields */
888 dinfo->enable_auto_del = true;
Kevin Wolff298d072013-09-10 12:01:20 +0200889 dinfo->opts = all_opts;
Kevin Wolf2d246f02013-09-18 15:14:47 +0200890
Kevin Wolfb41a7332013-09-09 16:49:49 +0200891 dinfo->cyls = cyls;
892 dinfo->heads = heads;
893 dinfo->secs = secs;
894 dinfo->trans = translation;
895
Kevin Wolf87a899c2013-09-10 15:48:13 +0200896 dinfo->bus = bus_id;
897 dinfo->unit = unit_id;
Kevin Wolf394c7d42013-09-13 14:09:17 +0200898 dinfo->devaddr = devaddr;
Kevin Wolf87a899c2013-09-10 15:48:13 +0200899
Kevin Wolfe34ef042013-09-19 14:24:10 +0200900 switch(type) {
901 case IF_IDE:
902 case IF_SCSI:
903 case IF_XEN:
904 case IF_NONE:
905 dinfo->media_cd = media == MEDIA_CDROM;
906 break;
907 default:
908 break;
909 }
910
Kevin Wolf2d246f02013-09-18 15:14:47 +0200911fail:
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200912 qemu_opts_del(legacy_opts);
Kevin Wolf2d246f02013-09-18 15:14:47 +0200913 return dinfo;
Kevin Wolf57975222013-07-17 14:41:54 +0200914}
915
Markus Armbruster666daa62010-06-02 18:48:27 +0200916void do_commit(Monitor *mon, const QDict *qdict)
917{
Markus Armbruster666daa62010-06-02 18:48:27 +0200918 const char *device = qdict_get_str(qdict, "device");
Markus Armbruster6ab4b5a2010-06-02 18:55:18 +0200919 BlockDriverState *bs;
Stefan Hajnoczie8877492012-03-05 18:10:11 +0000920 int ret;
Markus Armbruster666daa62010-06-02 18:48:27 +0200921
Markus Armbruster6ab4b5a2010-06-02 18:55:18 +0200922 if (!strcmp(device, "all")) {
Stefan Hajnoczie8877492012-03-05 18:10:11 +0000923 ret = bdrv_commit_all();
Markus Armbruster6ab4b5a2010-06-02 18:55:18 +0200924 } else {
925 bs = bdrv_find(device);
Markus Armbrusterac59eb92010-06-02 18:55:19 +0200926 if (!bs) {
Jeff Cody58513bd2013-01-18 12:45:35 -0500927 monitor_printf(mon, "Device '%s' not found\n", device);
Markus Armbrusterac59eb92010-06-02 18:55:19 +0200928 return;
Markus Armbruster6ab4b5a2010-06-02 18:55:18 +0200929 }
Stefan Hajnoczi2d3735d2012-01-18 14:40:41 +0000930 ret = bdrv_commit(bs);
Jeff Cody58513bd2013-01-18 12:45:35 -0500931 }
932 if (ret < 0) {
933 monitor_printf(mon, "'commit' error for '%s': %s\n", device,
934 strerror(-ret));
Markus Armbruster666daa62010-06-02 18:48:27 +0200935 }
936}
937
Paolo Bonzini6cc2a412012-03-06 18:55:59 +0100938static void blockdev_do_action(int kind, void *data, Error **errp)
939{
Kevin Wolfc8a83e82013-05-13 10:43:43 +0200940 TransactionAction action;
941 TransactionActionList list;
Paolo Bonzini6cc2a412012-03-06 18:55:59 +0100942
943 action.kind = kind;
944 action.data = data;
945 list.value = &action;
946 list.next = NULL;
947 qmp_transaction(&list, errp);
948}
949
Luiz Capitulino6106e242011-11-25 16:15:19 -0200950void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file,
951 bool has_format, const char *format,
Paolo Bonzini6cc2a412012-03-06 18:55:59 +0100952 bool has_mode, enum NewImageMode mode,
Luiz Capitulino6106e242011-11-25 16:15:19 -0200953 Error **errp)
Jes Sorensenf8882562010-12-16 13:52:16 +0100954{
Paolo Bonzini6cc2a412012-03-06 18:55:59 +0100955 BlockdevSnapshot snapshot = {
956 .device = (char *) device,
957 .snapshot_file = (char *) snapshot_file,
958 .has_format = has_format,
959 .format = (char *) format,
960 .has_mode = has_mode,
961 .mode = mode,
962 };
Kevin Wolfc8a83e82013-05-13 10:43:43 +0200963 blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC,
964 &snapshot, errp);
Jes Sorensenf8882562010-12-16 13:52:16 +0100965}
966
Wenchao Xiaf323bc92013-09-11 14:04:35 +0800967void qmp_blockdev_snapshot_internal_sync(const char *device,
968 const char *name,
969 Error **errp)
970{
971 BlockdevSnapshotInternal snapshot = {
972 .device = (char *) device,
973 .name = (char *) name
974 };
975
976 blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC,
977 &snapshot, errp);
978}
979
Wenchao Xia44e3e052013-09-11 14:04:36 +0800980SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device,
981 bool has_id,
982 const char *id,
983 bool has_name,
984 const char *name,
985 Error **errp)
986{
987 BlockDriverState *bs = bdrv_find(device);
988 QEMUSnapshotInfo sn;
989 Error *local_err = NULL;
990 SnapshotInfo *info = NULL;
991 int ret;
992
993 if (!bs) {
994 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
995 return NULL;
996 }
997
998 if (!has_id) {
999 id = NULL;
1000 }
1001
1002 if (!has_name) {
1003 name = NULL;
1004 }
1005
1006 if (!id && !name) {
1007 error_setg(errp, "Name or id must be provided");
1008 return NULL;
1009 }
1010
1011 ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err);
1012 if (error_is_set(&local_err)) {
1013 error_propagate(errp, local_err);
1014 return NULL;
1015 }
1016 if (!ret) {
1017 error_setg(errp,
1018 "Snapshot with id '%s' and name '%s' does not exist on "
1019 "device '%s'",
1020 STR_OR_NULL(id), STR_OR_NULL(name), device);
1021 return NULL;
1022 }
1023
1024 bdrv_snapshot_delete(bs, id, name, &local_err);
1025 if (error_is_set(&local_err)) {
1026 error_propagate(errp, local_err);
1027 return NULL;
1028 }
1029
1030 info = g_malloc0(sizeof(SnapshotInfo));
1031 info->id = g_strdup(sn.id_str);
1032 info->name = g_strdup(sn.name);
1033 info->date_nsec = sn.date_nsec;
1034 info->date_sec = sn.date_sec;
1035 info->vm_state_size = sn.vm_state_size;
1036 info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000;
1037 info->vm_clock_sec = sn.vm_clock_nsec / 1000000000;
1038
1039 return info;
1040}
Jeff Cody8802d1f2012-02-28 15:54:06 -05001041
1042/* New and old BlockDriverState structs for group snapshots */
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001043
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001044typedef struct BlkTransactionState BlkTransactionState;
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001045
1046/* Only prepare() may fail. In a single transaction, only one of commit() or
1047 abort() will be called, clean() will always be called if it present. */
1048typedef struct BdrvActionOps {
1049 /* Size of state struct, in bytes. */
1050 size_t instance_size;
1051 /* Prepare the work, must NOT be NULL. */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001052 void (*prepare)(BlkTransactionState *common, Error **errp);
Stefan Hajnoczif9ea81e2013-06-24 17:13:16 +02001053 /* Commit the changes, can be NULL. */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001054 void (*commit)(BlkTransactionState *common);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001055 /* Abort the changes on fail, can be NULL. */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001056 void (*abort)(BlkTransactionState *common);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001057 /* Clean up resource in the end, can be NULL. */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001058 void (*clean)(BlkTransactionState *common);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001059} BdrvActionOps;
1060
1061/*
1062 * This structure must be arranged as first member in child type, assuming
1063 * that compiler will also arrange it to the same address with parent instance.
1064 * Later it will be used in free().
1065 */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001066struct BlkTransactionState {
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001067 TransactionAction *action;
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001068 const BdrvActionOps *ops;
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001069 QSIMPLEQ_ENTRY(BlkTransactionState) entry;
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001070};
1071
Wenchao Xiabbe86012013-09-11 14:04:34 +08001072/* internal snapshot private data */
1073typedef struct InternalSnapshotState {
1074 BlkTransactionState common;
1075 BlockDriverState *bs;
1076 QEMUSnapshotInfo sn;
1077} InternalSnapshotState;
1078
1079static void internal_snapshot_prepare(BlkTransactionState *common,
1080 Error **errp)
1081{
1082 const char *device;
1083 const char *name;
1084 BlockDriverState *bs;
1085 QEMUSnapshotInfo old_sn, *sn;
1086 bool ret;
1087 qemu_timeval tv;
1088 BlockdevSnapshotInternal *internal;
1089 InternalSnapshotState *state;
1090 int ret1;
1091
1092 g_assert(common->action->kind ==
1093 TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC);
1094 internal = common->action->blockdev_snapshot_internal_sync;
1095 state = DO_UPCAST(InternalSnapshotState, common, common);
1096
1097 /* 1. parse input */
1098 device = internal->device;
1099 name = internal->name;
1100
1101 /* 2. check for validation */
1102 bs = bdrv_find(device);
1103 if (!bs) {
1104 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1105 return;
1106 }
1107
1108 if (!bdrv_is_inserted(bs)) {
1109 error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
1110 return;
1111 }
1112
1113 if (bdrv_is_read_only(bs)) {
1114 error_set(errp, QERR_DEVICE_IS_READ_ONLY, device);
1115 return;
1116 }
1117
1118 if (!bdrv_can_snapshot(bs)) {
1119 error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED,
1120 bs->drv->format_name, device, "internal snapshot");
1121 return;
1122 }
1123
1124 if (!strlen(name)) {
1125 error_setg(errp, "Name is empty");
1126 return;
1127 }
1128
1129 /* check whether a snapshot with name exist */
1130 ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, errp);
1131 if (error_is_set(errp)) {
1132 return;
1133 } else if (ret) {
1134 error_setg(errp,
1135 "Snapshot with name '%s' already exists on device '%s'",
1136 name, device);
1137 return;
1138 }
1139
1140 /* 3. take the snapshot */
1141 sn = &state->sn;
1142 pstrcpy(sn->name, sizeof(sn->name), name);
1143 qemu_gettimeofday(&tv);
1144 sn->date_sec = tv.tv_sec;
1145 sn->date_nsec = tv.tv_usec * 1000;
1146 sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
1147
1148 ret1 = bdrv_snapshot_create(bs, sn);
1149 if (ret1 < 0) {
1150 error_setg_errno(errp, -ret1,
1151 "Failed to create snapshot '%s' on device '%s'",
1152 name, device);
1153 return;
1154 }
1155
1156 /* 4. succeed, mark a snapshot is created */
1157 state->bs = bs;
1158}
1159
1160static void internal_snapshot_abort(BlkTransactionState *common)
1161{
1162 InternalSnapshotState *state =
1163 DO_UPCAST(InternalSnapshotState, common, common);
1164 BlockDriverState *bs = state->bs;
1165 QEMUSnapshotInfo *sn = &state->sn;
1166 Error *local_error = NULL;
1167
1168 if (!bs) {
1169 return;
1170 }
1171
1172 if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) {
1173 error_report("Failed to delete snapshot with id '%s' and name '%s' on "
1174 "device '%s' in abort: %s",
1175 sn->id_str,
1176 sn->name,
1177 bdrv_get_device_name(bs),
1178 error_get_pretty(local_error));
1179 error_free(local_error);
1180 }
1181}
1182
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001183/* external snapshot private data */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001184typedef struct ExternalSnapshotState {
1185 BlkTransactionState common;
Jeff Cody8802d1f2012-02-28 15:54:06 -05001186 BlockDriverState *old_bs;
1187 BlockDriverState *new_bs;
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001188} ExternalSnapshotState;
Jeff Cody8802d1f2012-02-28 15:54:06 -05001189
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001190static void external_snapshot_prepare(BlkTransactionState *common,
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001191 Error **errp)
1192{
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001193 BlockDriver *drv;
1194 int flags, ret;
1195 Error *local_err = NULL;
Wenchao Xiae2a31e82013-05-08 18:25:13 +08001196 const char *device;
1197 const char *new_image_file;
1198 const char *format = "qcow2";
1199 enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001200 ExternalSnapshotState *state =
1201 DO_UPCAST(ExternalSnapshotState, common, common);
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001202 TransactionAction *action = common->action;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001203
Wenchao Xiae2a31e82013-05-08 18:25:13 +08001204 /* get parameters */
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001205 g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC);
Wenchao Xiae2a31e82013-05-08 18:25:13 +08001206
1207 device = action->blockdev_snapshot_sync->device;
1208 new_image_file = action->blockdev_snapshot_sync->snapshot_file;
1209 if (action->blockdev_snapshot_sync->has_format) {
1210 format = action->blockdev_snapshot_sync->format;
1211 }
1212 if (action->blockdev_snapshot_sync->has_mode) {
1213 mode = action->blockdev_snapshot_sync->mode;
1214 }
1215
1216 /* start processing */
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001217 drv = bdrv_find_format(format);
1218 if (!drv) {
1219 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
1220 return;
1221 }
1222
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001223 state->old_bs = bdrv_find(device);
1224 if (!state->old_bs) {
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001225 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1226 return;
1227 }
1228
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001229 if (!bdrv_is_inserted(state->old_bs)) {
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001230 error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
1231 return;
1232 }
1233
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001234 if (bdrv_in_use(state->old_bs)) {
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001235 error_set(errp, QERR_DEVICE_IN_USE, device);
1236 return;
1237 }
1238
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001239 if (!bdrv_is_read_only(state->old_bs)) {
1240 if (bdrv_flush(state->old_bs)) {
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001241 error_set(errp, QERR_IO_ERROR);
1242 return;
1243 }
1244 }
1245
Benoît Canetf6186f42013-10-02 14:33:48 +02001246 if (bdrv_check_ext_snapshot(state->old_bs) != EXT_SNAPSHOT_ALLOWED) {
1247 error_set(errp, QERR_FEATURE_DISABLED, "snapshot");
1248 return;
1249 }
1250
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001251 flags = state->old_bs->open_flags;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001252
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001253 /* create new image w/backing file */
1254 if (mode != NEW_IMAGE_MODE_EXISTING) {
1255 bdrv_img_create(new_image_file, format,
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001256 state->old_bs->filename,
1257 state->old_bs->drv->format_name,
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001258 NULL, -1, flags, &local_err, false);
1259 if (error_is_set(&local_err)) {
1260 error_propagate(errp, local_err);
1261 return;
1262 }
1263 }
1264
1265 /* We will manually add the backing_hd field to the bs later */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001266 state->new_bs = bdrv_new("");
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001267 /* TODO Inherit bs->options or only take explicit options with an
1268 * extended QMP command? */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001269 ret = bdrv_open(state->new_bs, new_image_file, NULL,
Max Reitz34b5d2c2013-09-05 14:45:29 +02001270 flags | BDRV_O_NO_BACKING, drv, &local_err);
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001271 if (ret != 0) {
Max Reitz34b5d2c2013-09-05 14:45:29 +02001272 error_propagate(errp, local_err);
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001273 }
1274}
1275
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001276static void external_snapshot_commit(BlkTransactionState *common)
Wenchao Xia3b0047e2013-05-08 18:25:14 +08001277{
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001278 ExternalSnapshotState *state =
1279 DO_UPCAST(ExternalSnapshotState, common, common);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001280
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001281 /* This removes our old bs and adds the new bs */
1282 bdrv_append(state->new_bs, state->old_bs);
Wenchao Xia3b0047e2013-05-08 18:25:14 +08001283 /* We don't need (or want) to use the transactional
1284 * bdrv_reopen_multiple() across all the entries at once, because we
1285 * don't want to abort all of them if one of them fails the reopen */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001286 bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR,
Wenchao Xia3b0047e2013-05-08 18:25:14 +08001287 NULL);
1288}
1289
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001290static void external_snapshot_abort(BlkTransactionState *common)
Wenchao Xia96b86bf2013-05-08 18:25:15 +08001291{
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001292 ExternalSnapshotState *state =
1293 DO_UPCAST(ExternalSnapshotState, common, common);
1294 if (state->new_bs) {
Fam Zheng4f6fd342013-08-23 09:14:47 +08001295 bdrv_unref(state->new_bs);
Wenchao Xia96b86bf2013-05-08 18:25:15 +08001296 }
1297}
1298
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001299typedef struct DriveBackupState {
1300 BlkTransactionState common;
1301 BlockDriverState *bs;
1302 BlockJob *job;
1303} DriveBackupState;
1304
1305static void drive_backup_prepare(BlkTransactionState *common, Error **errp)
1306{
1307 DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
1308 DriveBackup *backup;
1309 Error *local_err = NULL;
1310
1311 assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP);
1312 backup = common->action->drive_backup;
1313
1314 qmp_drive_backup(backup->device, backup->target,
1315 backup->has_format, backup->format,
Stefan Hajnoczib53169e2013-06-26 14:11:57 +02001316 backup->sync,
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001317 backup->has_mode, backup->mode,
1318 backup->has_speed, backup->speed,
1319 backup->has_on_source_error, backup->on_source_error,
1320 backup->has_on_target_error, backup->on_target_error,
1321 &local_err);
1322 if (error_is_set(&local_err)) {
1323 error_propagate(errp, local_err);
1324 state->bs = NULL;
1325 state->job = NULL;
1326 return;
1327 }
1328
1329 state->bs = bdrv_find(backup->device);
1330 state->job = state->bs->job;
1331}
1332
1333static void drive_backup_abort(BlkTransactionState *common)
1334{
1335 DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
1336 BlockDriverState *bs = state->bs;
1337
1338 /* Only cancel if it's the job we started */
1339 if (bs && bs->job && bs->job == state->job) {
1340 block_job_cancel_sync(bs->job);
1341 }
1342}
1343
Stefan Hajnoczi78b18b72013-06-24 17:13:18 +02001344static void abort_prepare(BlkTransactionState *common, Error **errp)
1345{
1346 error_setg(errp, "Transaction aborted using Abort action");
1347}
1348
1349static void abort_commit(BlkTransactionState *common)
1350{
Stefan Weildfc6f862013-07-25 18:21:28 +02001351 g_assert_not_reached(); /* this action never succeeds */
Stefan Hajnoczi78b18b72013-06-24 17:13:18 +02001352}
1353
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001354static const BdrvActionOps actions[] = {
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001355 [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = {
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001356 .instance_size = sizeof(ExternalSnapshotState),
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001357 .prepare = external_snapshot_prepare,
1358 .commit = external_snapshot_commit,
1359 .abort = external_snapshot_abort,
1360 },
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001361 [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = {
1362 .instance_size = sizeof(DriveBackupState),
1363 .prepare = drive_backup_prepare,
1364 .abort = drive_backup_abort,
1365 },
Stefan Hajnoczi78b18b72013-06-24 17:13:18 +02001366 [TRANSACTION_ACTION_KIND_ABORT] = {
1367 .instance_size = sizeof(BlkTransactionState),
1368 .prepare = abort_prepare,
1369 .commit = abort_commit,
1370 },
Wenchao Xiabbe86012013-09-11 14:04:34 +08001371 [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = {
1372 .instance_size = sizeof(InternalSnapshotState),
1373 .prepare = internal_snapshot_prepare,
1374 .abort = internal_snapshot_abort,
1375 },
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001376};
1377
Jeff Cody8802d1f2012-02-28 15:54:06 -05001378/*
1379 * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail
1380 * then we do not pivot any of the devices in the group, and abandon the
1381 * snapshots
1382 */
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001383void qmp_transaction(TransactionActionList *dev_list, Error **errp)
Jeff Cody8802d1f2012-02-28 15:54:06 -05001384{
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001385 TransactionActionList *dev_entry = dev_list;
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001386 BlkTransactionState *state, *next;
Luiz Capitulino43e17042012-11-30 10:52:07 -02001387 Error *local_err = NULL;
Jeff Cody8802d1f2012-02-28 15:54:06 -05001388
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001389 QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states;
Jeff Cody8802d1f2012-02-28 15:54:06 -05001390 QSIMPLEQ_INIT(&snap_bdrv_states);
1391
1392 /* drain all i/o before any snapshots */
1393 bdrv_drain_all();
1394
1395 /* We don't do anything in this loop that commits us to the snapshot */
1396 while (NULL != dev_entry) {
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001397 TransactionAction *dev_info = NULL;
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001398 const BdrvActionOps *ops;
Paolo Bonzini52e7c242012-03-06 18:55:57 +01001399
Jeff Cody8802d1f2012-02-28 15:54:06 -05001400 dev_info = dev_entry->value;
1401 dev_entry = dev_entry->next;
1402
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001403 assert(dev_info->kind < ARRAY_SIZE(actions));
1404
1405 ops = &actions[dev_info->kind];
Max Reitzaa3fe712013-09-12 14:57:27 +02001406 assert(ops->instance_size > 0);
1407
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001408 state = g_malloc0(ops->instance_size);
1409 state->ops = ops;
1410 state->action = dev_info;
1411 QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry);
Jeff Cody8802d1f2012-02-28 15:54:06 -05001412
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001413 state->ops->prepare(state, &local_err);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001414 if (error_is_set(&local_err)) {
1415 error_propagate(errp, local_err);
1416 goto delete_and_fail;
Paolo Bonzini52e7c242012-03-06 18:55:57 +01001417 }
Jeff Cody8802d1f2012-02-28 15:54:06 -05001418 }
1419
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001420 QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) {
Stefan Hajnoczif9ea81e2013-06-24 17:13:16 +02001421 if (state->ops->commit) {
1422 state->ops->commit(state);
1423 }
Jeff Cody8802d1f2012-02-28 15:54:06 -05001424 }
1425
1426 /* success */
1427 goto exit;
1428
1429delete_and_fail:
1430 /*
1431 * failure, and it is all-or-none; abandon each new bs, and keep using
1432 * the original bs for all images
1433 */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001434 QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) {
1435 if (state->ops->abort) {
1436 state->ops->abort(state);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001437 }
Jeff Cody8802d1f2012-02-28 15:54:06 -05001438 }
1439exit:
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001440 QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) {
1441 if (state->ops->clean) {
1442 state->ops->clean(state);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001443 }
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001444 g_free(state);
Jeff Cody8802d1f2012-02-28 15:54:06 -05001445 }
Jeff Cody8802d1f2012-02-28 15:54:06 -05001446}
1447
1448
Luiz Capitulino92d48552011-12-07 15:47:23 -02001449static void eject_device(BlockDriverState *bs, int force, Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +02001450{
Stefan Hajnoczi2d3735d2012-01-18 14:40:41 +00001451 if (bdrv_in_use(bs)) {
1452 error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs));
1453 return;
1454 }
Markus Armbruster2c6942f2011-09-06 18:58:51 +02001455 if (!bdrv_dev_has_removable_media(bs)) {
Luiz Capitulino92d48552011-12-07 15:47:23 -02001456 error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs));
1457 return;
Markus Armbrusterea8f9422011-07-20 18:23:35 +02001458 }
Luiz Capitulino92d48552011-12-07 15:47:23 -02001459
Paolo Bonzini025ccaa2011-11-07 17:50:13 +01001460 if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) {
1461 bdrv_dev_eject_request(bs, force);
1462 if (!force) {
Luiz Capitulino92d48552011-12-07 15:47:23 -02001463 error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs));
1464 return;
Paolo Bonzini025ccaa2011-11-07 17:50:13 +01001465 }
Markus Armbruster666daa62010-06-02 18:48:27 +02001466 }
Luiz Capitulino92d48552011-12-07 15:47:23 -02001467
Eduardo Habkost3b5276b2010-06-01 19:12:19 -03001468 bdrv_close(bs);
Markus Armbruster666daa62010-06-02 18:48:27 +02001469}
1470
Luiz Capitulinoc245b6a2011-12-07 16:02:36 -02001471void qmp_eject(const char *device, bool has_force, bool force, Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +02001472{
1473 BlockDriverState *bs;
Markus Armbruster666daa62010-06-02 18:48:27 +02001474
Luiz Capitulinoc245b6a2011-12-07 16:02:36 -02001475 bs = bdrv_find(device);
Markus Armbruster666daa62010-06-02 18:48:27 +02001476 if (!bs) {
Luiz Capitulinoc245b6a2011-12-07 16:02:36 -02001477 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1478 return;
Markus Armbruster666daa62010-06-02 18:48:27 +02001479 }
Luiz Capitulino92d48552011-12-07 15:47:23 -02001480
Luiz Capitulinoc245b6a2011-12-07 16:02:36 -02001481 eject_device(bs, force, errp);
Markus Armbruster666daa62010-06-02 18:48:27 +02001482}
1483
Luiz Capitulinoa4dea8a2011-11-23 13:28:21 -02001484void qmp_block_passwd(const char *device, const char *password, Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +02001485{
1486 BlockDriverState *bs;
1487 int err;
1488
Luiz Capitulinoa4dea8a2011-11-23 13:28:21 -02001489 bs = bdrv_find(device);
Markus Armbruster666daa62010-06-02 18:48:27 +02001490 if (!bs) {
Luiz Capitulinoa4dea8a2011-11-23 13:28:21 -02001491 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1492 return;
Markus Armbruster666daa62010-06-02 18:48:27 +02001493 }
1494
Luiz Capitulinoa4dea8a2011-11-23 13:28:21 -02001495 err = bdrv_set_key(bs, password);
Markus Armbruster666daa62010-06-02 18:48:27 +02001496 if (err == -EINVAL) {
Luiz Capitulinoa4dea8a2011-11-23 13:28:21 -02001497 error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
1498 return;
Markus Armbruster666daa62010-06-02 18:48:27 +02001499 } else if (err < 0) {
Luiz Capitulinoa4dea8a2011-11-23 13:28:21 -02001500 error_set(errp, QERR_INVALID_PASSWORD);
1501 return;
Markus Armbruster666daa62010-06-02 18:48:27 +02001502 }
Markus Armbruster666daa62010-06-02 18:48:27 +02001503}
1504
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001505static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
1506 int bdrv_flags, BlockDriver *drv,
1507 const char *password, Error **errp)
1508{
Max Reitz34b5d2c2013-09-05 14:45:29 +02001509 Error *local_err = NULL;
Luiz Capitulino0eef4072013-06-07 14:33:48 -04001510 int ret;
1511
Max Reitz34b5d2c2013-09-05 14:45:29 +02001512 ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv, &local_err);
Luiz Capitulino0eef4072013-06-07 14:33:48 -04001513 if (ret < 0) {
Max Reitz34b5d2c2013-09-05 14:45:29 +02001514 error_propagate(errp, local_err);
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001515 return;
1516 }
1517
1518 if (bdrv_key_required(bs)) {
1519 if (password) {
1520 if (bdrv_set_key(bs, password) < 0) {
1521 error_set(errp, QERR_INVALID_PASSWORD);
1522 }
1523 } else {
1524 error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs),
1525 bdrv_get_encrypted_filename(bs));
1526 }
1527 } else if (password) {
1528 error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
1529 }
1530}
1531
1532void qmp_change_blockdev(const char *device, const char *filename,
Marc-André Lureau314f7ea2013-12-01 22:23:37 +01001533 const char *format, Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +02001534{
1535 BlockDriverState *bs;
1536 BlockDriver *drv = NULL;
1537 int bdrv_flags;
Luiz Capitulino92d48552011-12-07 15:47:23 -02001538 Error *err = NULL;
Markus Armbruster666daa62010-06-02 18:48:27 +02001539
1540 bs = bdrv_find(device);
1541 if (!bs) {
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001542 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1543 return;
Markus Armbruster666daa62010-06-02 18:48:27 +02001544 }
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001545
1546 if (format) {
Fam Zhengb64ec4e2013-05-29 19:35:40 +08001547 drv = bdrv_find_whitelisted_format(format, bs->read_only);
Markus Armbruster666daa62010-06-02 18:48:27 +02001548 if (!drv) {
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001549 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
1550 return;
Markus Armbruster666daa62010-06-02 18:48:27 +02001551 }
1552 }
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001553
Luiz Capitulino92d48552011-12-07 15:47:23 -02001554 eject_device(bs, 0, &err);
1555 if (error_is_set(&err)) {
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001556 error_propagate(errp, err);
1557 return;
Markus Armbruster666daa62010-06-02 18:48:27 +02001558 }
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001559
Markus Armbruster528f7662010-06-25 15:26:48 +02001560 bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR;
Blue Swirl199630b2010-07-25 20:49:34 +00001561 bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0;
Luiz Capitulino333a96e2011-12-08 11:13:50 -02001562
1563 qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp);
Markus Armbruster666daa62010-06-02 18:48:27 +02001564}
Ryan Harper9063f812010-11-12 11:07:13 -06001565
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001566/* throttling disk I/O limits */
Luiz Capitulino80047da2011-12-14 16:49:14 -02001567void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
Benoît Canet3e9fab62013-09-02 14:14:40 +02001568 int64_t bps_wr,
1569 int64_t iops,
1570 int64_t iops_rd,
1571 int64_t iops_wr,
1572 bool has_bps_max,
1573 int64_t bps_max,
1574 bool has_bps_rd_max,
1575 int64_t bps_rd_max,
1576 bool has_bps_wr_max,
1577 int64_t bps_wr_max,
1578 bool has_iops_max,
1579 int64_t iops_max,
1580 bool has_iops_rd_max,
1581 int64_t iops_rd_max,
1582 bool has_iops_wr_max,
Benoît Canet2024c1d2013-09-02 14:14:41 +02001583 int64_t iops_wr_max,
1584 bool has_iops_size,
1585 int64_t iops_size, Error **errp)
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001586{
Benoît Canetcc0681c2013-09-02 14:14:39 +02001587 ThrottleConfig cfg;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001588 BlockDriverState *bs;
1589
Luiz Capitulino80047da2011-12-14 16:49:14 -02001590 bs = bdrv_find(device);
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001591 if (!bs) {
Luiz Capitulino80047da2011-12-14 16:49:14 -02001592 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1593 return;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001594 }
1595
Benoît Canetcc0681c2013-09-02 14:14:39 +02001596 memset(&cfg, 0, sizeof(cfg));
1597 cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps;
1598 cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd;
1599 cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001600
Benoît Canetcc0681c2013-09-02 14:14:39 +02001601 cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops;
1602 cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd;
1603 cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr;
1604
Benoît Canet3e9fab62013-09-02 14:14:40 +02001605 if (has_bps_max) {
1606 cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max;
1607 }
1608 if (has_bps_rd_max) {
1609 cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max;
1610 }
1611 if (has_bps_wr_max) {
1612 cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max;
1613 }
1614 if (has_iops_max) {
1615 cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max;
1616 }
1617 if (has_iops_rd_max) {
1618 cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max;
1619 }
1620 if (has_iops_wr_max) {
1621 cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max;
1622 }
Benoît Canetcc0681c2013-09-02 14:14:39 +02001623
Benoît Canet2024c1d2013-09-02 14:14:41 +02001624 if (has_iops_size) {
1625 cfg.op_size = iops_size;
1626 }
Benoît Canetcc0681c2013-09-02 14:14:39 +02001627
1628 if (!check_throttle_config(&cfg, errp)) {
Luiz Capitulino80047da2011-12-14 16:49:14 -02001629 return;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001630 }
1631
Benoît Canetcc0681c2013-09-02 14:14:39 +02001632 if (!bs->io_limits_enabled && throttle_enabled(&cfg)) {
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001633 bdrv_io_limits_enable(bs);
Benoît Canetcc0681c2013-09-02 14:14:39 +02001634 } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) {
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001635 bdrv_io_limits_disable(bs);
Benoît Canetcc0681c2013-09-02 14:14:39 +02001636 }
1637
1638 if (bs->io_limits_enabled) {
1639 bdrv_set_io_limits(bs, &cfg);
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001640 }
Zhi Yong Wu727f0052011-11-08 13:00:31 +08001641}
1642
Ryan Harper9063f812010-11-12 11:07:13 -06001643int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
1644{
1645 const char *id = qdict_get_str(qdict, "id");
1646 BlockDriverState *bs;
Ryan Harper9063f812010-11-12 11:07:13 -06001647
1648 bs = bdrv_find(id);
1649 if (!bs) {
1650 qerror_report(QERR_DEVICE_NOT_FOUND, id);
1651 return -1;
1652 }
Marcelo Tosatti85916752011-01-26 12:12:35 -02001653 if (bdrv_in_use(bs)) {
1654 qerror_report(QERR_DEVICE_IN_USE, id);
1655 return -1;
1656 }
Ryan Harper9063f812010-11-12 11:07:13 -06001657
1658 /* quiesce block driver; prevent further io */
Stefan Hajnoczi922453b2011-11-30 12:23:43 +00001659 bdrv_drain_all();
Ryan Harper9063f812010-11-12 11:07:13 -06001660 bdrv_flush(bs);
1661 bdrv_close(bs);
1662
Markus Armbrusterfa879d62011-08-03 15:07:40 +02001663 /* if we have a device attached to this BlockDriverState
Ryan Harperd22b2f42011-03-29 20:51:47 -05001664 * then we need to make the drive anonymous until the device
1665 * can be removed. If this is a drive with no device backing
1666 * then we can just get rid of the block driver state right here.
1667 */
Markus Armbrusterfa879d62011-08-03 15:07:40 +02001668 if (bdrv_get_attached_dev(bs)) {
Ryan Harperd22b2f42011-03-29 20:51:47 -05001669 bdrv_make_anon(bs);
Stefan Hajnoczi293c51a2013-06-05 10:33:14 +02001670
1671 /* Further I/O must not pause the guest */
1672 bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT,
1673 BLOCKDEV_ON_ERROR_REPORT);
Ryan Harperd22b2f42011-03-29 20:51:47 -05001674 } else {
1675 drive_uninit(drive_get_by_blockdev(bs));
Ryan Harper9063f812010-11-12 11:07:13 -06001676 }
1677
Ryan Harper9063f812010-11-12 11:07:13 -06001678 return 0;
1679}
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01001680
Luiz Capitulino5e7caac2011-11-25 14:57:10 -02001681void qmp_block_resize(const char *device, int64_t size, Error **errp)
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01001682{
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01001683 BlockDriverState *bs;
Kevin Wolf87329012013-05-02 15:32:55 +02001684 int ret;
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01001685
1686 bs = bdrv_find(device);
1687 if (!bs) {
Luiz Capitulino5e7caac2011-11-25 14:57:10 -02001688 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1689 return;
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01001690 }
1691
1692 if (size < 0) {
Stefan Hajnoczi939a1cc2012-01-04 22:23:34 +00001693 error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size");
Luiz Capitulino5e7caac2011-11-25 14:57:10 -02001694 return;
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01001695 }
1696
Peter Lieven92b7a082013-03-11 11:04:24 +01001697 /* complete all in-flight operations before resizing the device */
1698 bdrv_drain_all();
1699
Kevin Wolf87329012013-05-02 15:32:55 +02001700 ret = bdrv_truncate(bs, size);
1701 switch (ret) {
Stefan Hajnoczi939a1cc2012-01-04 22:23:34 +00001702 case 0:
1703 break;
1704 case -ENOMEDIUM:
1705 error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
1706 break;
1707 case -ENOTSUP:
1708 error_set(errp, QERR_UNSUPPORTED);
1709 break;
1710 case -EACCES:
1711 error_set(errp, QERR_DEVICE_IS_READ_ONLY, device);
1712 break;
1713 case -EBUSY:
1714 error_set(errp, QERR_DEVICE_IN_USE, device);
1715 break;
1716 default:
Kevin Wolf87329012013-05-02 15:32:55 +02001717 error_setg_errno(errp, -ret, "Could not resize");
Stefan Hajnoczi939a1cc2012-01-04 22:23:34 +00001718 break;
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01001719 }
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01001720}
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001721
Jeff Cody9abf2db2012-09-27 13:29:14 -04001722static void block_job_cb(void *opaque, int ret)
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001723{
1724 BlockDriverState *bs = opaque;
1725 QObject *obj;
1726
Jeff Cody9abf2db2012-09-27 13:29:14 -04001727 trace_block_job_cb(bs, bs->job, ret);
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001728
1729 assert(bs->job);
1730 obj = qobject_from_block_job(bs->job);
1731 if (ret < 0) {
1732 QDict *dict = qobject_to_qdict(obj);
1733 qdict_put(dict, "error", qstring_from_str(strerror(-ret)));
1734 }
1735
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00001736 if (block_job_is_cancelled(bs->job)) {
1737 monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj);
1738 } else {
1739 monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj);
1740 }
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001741 qobject_decref(obj);
Stefan Hajnocziaa398a52012-01-18 14:40:50 +00001742
Fam Zhengfa510eb2013-08-23 09:14:51 +08001743 bdrv_put_ref_bh_schedule(bs);
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001744}
1745
1746void qmp_block_stream(const char *device, bool has_base,
Paolo Bonzini1d809092012-09-28 17:22:59 +02001747 const char *base, bool has_speed, int64_t speed,
1748 bool has_on_error, BlockdevOnError on_error,
1749 Error **errp)
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001750{
1751 BlockDriverState *bs;
Marcelo Tosattic8c30802012-01-18 14:40:53 +00001752 BlockDriverState *base_bs = NULL;
Stefan Hajnoczifd7f8c62012-04-25 16:51:00 +01001753 Error *local_err = NULL;
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001754
Paolo Bonzini1d809092012-09-28 17:22:59 +02001755 if (!has_on_error) {
1756 on_error = BLOCKDEV_ON_ERROR_REPORT;
1757 }
1758
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001759 bs = bdrv_find(device);
1760 if (!bs) {
1761 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1762 return;
1763 }
1764
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001765 if (base) {
Marcelo Tosattic8c30802012-01-18 14:40:53 +00001766 base_bs = bdrv_find_backing_image(bs, base);
1767 if (base_bs == NULL) {
1768 error_set(errp, QERR_BASE_NOT_FOUND, base);
1769 return;
1770 }
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001771 }
1772
Stefan Hajnoczic83c66c2012-04-25 16:51:03 +01001773 stream_start(bs, base_bs, base, has_speed ? speed : 0,
Paolo Bonzini1d809092012-09-28 17:22:59 +02001774 on_error, block_job_cb, bs, &local_err);
Stefan Hajnoczifd7f8c62012-04-25 16:51:00 +01001775 if (error_is_set(&local_err)) {
1776 error_propagate(errp, local_err);
1777 return;
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00001778 }
1779
1780 trace_qmp_block_stream(bs, bs->job);
1781}
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00001782
Jeff Codyed61fc12012-09-27 13:29:16 -04001783void qmp_block_commit(const char *device,
1784 bool has_base, const char *base, const char *top,
1785 bool has_speed, int64_t speed,
1786 Error **errp)
1787{
1788 BlockDriverState *bs;
1789 BlockDriverState *base_bs, *top_bs;
1790 Error *local_err = NULL;
1791 /* This will be part of the QMP command, if/when the
1792 * BlockdevOnError change for blkmirror makes it in
1793 */
Paolo Bonzini92aa5c62012-09-28 17:22:55 +02001794 BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT;
Jeff Codyed61fc12012-09-27 13:29:16 -04001795
1796 /* drain all i/o before commits */
1797 bdrv_drain_all();
1798
1799 bs = bdrv_find(device);
1800 if (!bs) {
1801 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1802 return;
1803 }
Jeff Codyed61fc12012-09-27 13:29:16 -04001804
1805 /* default top_bs is the active layer */
1806 top_bs = bs;
1807
1808 if (top) {
1809 if (strcmp(bs->filename, top) != 0) {
1810 top_bs = bdrv_find_backing_image(bs, top);
1811 }
1812 }
1813
1814 if (top_bs == NULL) {
1815 error_setg(errp, "Top image file %s not found", top ? top : "NULL");
1816 return;
1817 }
1818
Jeff Codyd5208c42012-10-16 15:49:10 -04001819 if (has_base && base) {
1820 base_bs = bdrv_find_backing_image(top_bs, base);
1821 } else {
1822 base_bs = bdrv_find_base(top_bs);
1823 }
1824
1825 if (base_bs == NULL) {
1826 error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL");
1827 return;
1828 }
1829
Fam Zheng20a63d22013-12-16 14:45:31 +08001830 if (top_bs == bs) {
1831 commit_active_start(bs, base_bs, speed, on_error, block_job_cb,
1832 bs, &local_err);
1833 } else {
1834 commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs,
1835 &local_err);
1836 }
Jeff Codyed61fc12012-09-27 13:29:16 -04001837 if (local_err != NULL) {
1838 error_propagate(errp, local_err);
1839 return;
1840 }
Jeff Codyed61fc12012-09-27 13:29:16 -04001841}
1842
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001843void qmp_drive_backup(const char *device, const char *target,
1844 bool has_format, const char *format,
Stefan Hajnoczib53169e2013-06-26 14:11:57 +02001845 enum MirrorSyncMode sync,
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001846 bool has_mode, enum NewImageMode mode,
1847 bool has_speed, int64_t speed,
1848 bool has_on_source_error, BlockdevOnError on_source_error,
1849 bool has_on_target_error, BlockdevOnError on_target_error,
1850 Error **errp)
1851{
1852 BlockDriverState *bs;
1853 BlockDriverState *target_bs;
Ian Mainfc5d3f82013-07-26 11:39:04 -07001854 BlockDriverState *source = NULL;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001855 BlockDriver *drv = NULL;
1856 Error *local_err = NULL;
1857 int flags;
1858 int64_t size;
1859 int ret;
1860
1861 if (!has_speed) {
1862 speed = 0;
1863 }
1864 if (!has_on_source_error) {
1865 on_source_error = BLOCKDEV_ON_ERROR_REPORT;
1866 }
1867 if (!has_on_target_error) {
1868 on_target_error = BLOCKDEV_ON_ERROR_REPORT;
1869 }
1870 if (!has_mode) {
1871 mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
1872 }
1873
1874 bs = bdrv_find(device);
1875 if (!bs) {
1876 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
1877 return;
1878 }
1879
1880 if (!bdrv_is_inserted(bs)) {
1881 error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
1882 return;
1883 }
1884
1885 if (!has_format) {
1886 format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
1887 }
1888 if (format) {
1889 drv = bdrv_find_format(format);
1890 if (!drv) {
1891 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
1892 return;
1893 }
1894 }
1895
1896 if (bdrv_in_use(bs)) {
1897 error_set(errp, QERR_DEVICE_IN_USE, device);
1898 return;
1899 }
1900
1901 flags = bs->open_flags | BDRV_O_RDWR;
1902
Ian Mainfc5d3f82013-07-26 11:39:04 -07001903 /* See if we have a backing HD we can use to create our new image
1904 * on top of. */
1905 if (sync == MIRROR_SYNC_MODE_TOP) {
1906 source = bs->backing_hd;
1907 if (!source) {
1908 sync = MIRROR_SYNC_MODE_FULL;
1909 }
1910 }
1911 if (sync == MIRROR_SYNC_MODE_NONE) {
1912 source = bs;
1913 }
1914
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001915 size = bdrv_getlength(bs);
1916 if (size < 0) {
1917 error_setg_errno(errp, -size, "bdrv_getlength failed");
1918 return;
1919 }
1920
1921 if (mode != NEW_IMAGE_MODE_EXISTING) {
1922 assert(format && drv);
Ian Mainfc5d3f82013-07-26 11:39:04 -07001923 if (source) {
1924 bdrv_img_create(target, format, source->filename,
1925 source->drv->format_name, NULL,
1926 size, flags, &local_err, false);
1927 } else {
1928 bdrv_img_create(target, format, NULL, NULL, NULL,
1929 size, flags, &local_err, false);
1930 }
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001931 }
1932
1933 if (error_is_set(&local_err)) {
1934 error_propagate(errp, local_err);
1935 return;
1936 }
1937
1938 target_bs = bdrv_new("");
Max Reitz34b5d2c2013-09-05 14:45:29 +02001939 ret = bdrv_open(target_bs, target, NULL, flags, drv, &local_err);
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001940 if (ret < 0) {
Fam Zheng4f6fd342013-08-23 09:14:47 +08001941 bdrv_unref(target_bs);
Max Reitz34b5d2c2013-09-05 14:45:29 +02001942 error_propagate(errp, local_err);
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001943 return;
1944 }
1945
Ian Mainfc5d3f82013-07-26 11:39:04 -07001946 backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error,
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001947 block_job_cb, bs, &local_err);
1948 if (local_err != NULL) {
Fam Zheng4f6fd342013-08-23 09:14:47 +08001949 bdrv_unref(target_bs);
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001950 error_propagate(errp, local_err);
1951 return;
1952 }
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02001953}
1954
Benoît Canetc13163f2014-01-23 21:31:34 +01001955BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp)
1956{
1957 return bdrv_named_nodes_list();
1958}
1959
Paolo Bonzini08e4ed62013-01-22 09:03:13 +01001960#define DEFAULT_MIRROR_BUF_SIZE (10 << 20)
1961
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02001962void qmp_drive_mirror(const char *device, const char *target,
1963 bool has_format, const char *format,
1964 enum MirrorSyncMode sync,
1965 bool has_mode, enum NewImageMode mode,
Paolo Bonzinib952b552012-10-18 16:49:28 +02001966 bool has_speed, int64_t speed,
Paolo Bonzinieee13df2013-01-21 17:09:46 +01001967 bool has_granularity, uint32_t granularity,
Paolo Bonzini08e4ed62013-01-22 09:03:13 +01001968 bool has_buf_size, int64_t buf_size,
Paolo Bonzinib952b552012-10-18 16:49:28 +02001969 bool has_on_source_error, BlockdevOnError on_source_error,
1970 bool has_on_target_error, BlockdevOnError on_target_error,
1971 Error **errp)
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02001972{
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02001973 BlockDriverState *bs;
1974 BlockDriverState *source, *target_bs;
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02001975 BlockDriver *drv = NULL;
1976 Error *local_err = NULL;
1977 int flags;
Stefan Hajnocziac3c5d82013-06-24 17:13:13 +02001978 int64_t size;
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02001979 int ret;
1980
1981 if (!has_speed) {
1982 speed = 0;
1983 }
Paolo Bonzinib952b552012-10-18 16:49:28 +02001984 if (!has_on_source_error) {
1985 on_source_error = BLOCKDEV_ON_ERROR_REPORT;
1986 }
1987 if (!has_on_target_error) {
1988 on_target_error = BLOCKDEV_ON_ERROR_REPORT;
1989 }
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02001990 if (!has_mode) {
1991 mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
1992 }
Paolo Bonzinieee13df2013-01-21 17:09:46 +01001993 if (!has_granularity) {
1994 granularity = 0;
1995 }
Paolo Bonzini08e4ed62013-01-22 09:03:13 +01001996 if (!has_buf_size) {
1997 buf_size = DEFAULT_MIRROR_BUF_SIZE;
1998 }
1999
Paolo Bonzinieee13df2013-01-21 17:09:46 +01002000 if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) {
2001 error_set(errp, QERR_INVALID_PARAMETER, device);
2002 return;
2003 }
2004 if (granularity & (granularity - 1)) {
2005 error_set(errp, QERR_INVALID_PARAMETER, device);
2006 return;
2007 }
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002008
2009 bs = bdrv_find(device);
2010 if (!bs) {
2011 error_set(errp, QERR_DEVICE_NOT_FOUND, device);
2012 return;
2013 }
2014
2015 if (!bdrv_is_inserted(bs)) {
2016 error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
2017 return;
2018 }
2019
2020 if (!has_format) {
2021 format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
2022 }
2023 if (format) {
2024 drv = bdrv_find_format(format);
2025 if (!drv) {
2026 error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
2027 return;
2028 }
2029 }
2030
2031 if (bdrv_in_use(bs)) {
2032 error_set(errp, QERR_DEVICE_IN_USE, device);
2033 return;
2034 }
2035
2036 flags = bs->open_flags | BDRV_O_RDWR;
2037 source = bs->backing_hd;
2038 if (!source && sync == MIRROR_SYNC_MODE_TOP) {
2039 sync = MIRROR_SYNC_MODE_FULL;
2040 }
Max Reitz117e0c82013-11-25 20:28:55 +01002041 if (sync == MIRROR_SYNC_MODE_NONE) {
2042 source = bs;
2043 }
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002044
Stefan Hajnocziac3c5d82013-06-24 17:13:13 +02002045 size = bdrv_getlength(bs);
2046 if (size < 0) {
2047 error_setg_errno(errp, -size, "bdrv_getlength failed");
2048 return;
2049 }
2050
Max Reitz14526862013-11-06 19:50:44 +01002051 if ((sync == MIRROR_SYNC_MODE_FULL || !source)
2052 && mode != NEW_IMAGE_MODE_EXISTING)
2053 {
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002054 /* create new image w/o backing file */
2055 assert(format && drv);
Luiz Capitulinocf8f2422012-11-30 10:52:08 -02002056 bdrv_img_create(target, format,
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002057 NULL, NULL, NULL, size, flags, &local_err, false);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002058 } else {
2059 switch (mode) {
2060 case NEW_IMAGE_MODE_EXISTING:
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002061 break;
2062 case NEW_IMAGE_MODE_ABSOLUTE_PATHS:
2063 /* create new image with backing file */
Luiz Capitulinocf8f2422012-11-30 10:52:08 -02002064 bdrv_img_create(target, format,
2065 source->filename,
2066 source->drv->format_name,
Miroslav Rezaninaf382d432013-02-13 09:09:40 +01002067 NULL, size, flags, &local_err, false);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002068 break;
2069 default:
2070 abort();
2071 }
2072 }
2073
Luiz Capitulinocf8f2422012-11-30 10:52:08 -02002074 if (error_is_set(&local_err)) {
2075 error_propagate(errp, local_err);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002076 return;
2077 }
2078
Paolo Bonzinib812f672013-01-21 17:09:43 +01002079 /* Mirroring takes care of copy-on-write using the source's backing
2080 * file.
2081 */
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002082 target_bs = bdrv_new("");
Max Reitz34b5d2c2013-09-05 14:45:29 +02002083 ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv,
2084 &local_err);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002085 if (ret < 0) {
Fam Zheng4f6fd342013-08-23 09:14:47 +08002086 bdrv_unref(target_bs);
Max Reitz34b5d2c2013-09-05 14:45:29 +02002087 error_propagate(errp, local_err);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002088 return;
2089 }
2090
Paolo Bonzini08e4ed62013-01-22 09:03:13 +01002091 mirror_start(bs, target_bs, speed, granularity, buf_size, sync,
Paolo Bonzinieee13df2013-01-21 17:09:46 +01002092 on_source_error, on_target_error,
Paolo Bonzinib952b552012-10-18 16:49:28 +02002093 block_job_cb, bs, &local_err);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002094 if (local_err != NULL) {
Fam Zheng4f6fd342013-08-23 09:14:47 +08002095 bdrv_unref(target_bs);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002096 error_propagate(errp, local_err);
2097 return;
2098 }
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02002099}
2100
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00002101static BlockJob *find_block_job(const char *device)
2102{
2103 BlockDriverState *bs;
2104
2105 bs = bdrv_find(device);
2106 if (!bs || !bs->job) {
2107 return NULL;
2108 }
2109 return bs->job;
2110}
2111
Stefan Hajnoczi882ec7c2012-04-25 16:51:02 +01002112void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp)
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00002113{
2114 BlockJob *job = find_block_job(device);
2115
2116 if (!job) {
Paolo Bonzini7ef15072012-09-28 17:22:44 +02002117 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00002118 return;
2119 }
2120
Stefan Hajnoczi882ec7c2012-04-25 16:51:02 +01002121 block_job_set_speed(job, speed, errp);
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00002122}
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00002123
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02002124void qmp_block_job_cancel(const char *device,
2125 bool has_force, bool force, Error **errp)
2126{
2127 BlockJob *job = find_block_job(device);
2128
2129 if (!has_force) {
2130 force = false;
2131 }
2132
2133 if (!job) {
2134 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
2135 return;
2136 }
2137 if (job->paused && !force) {
2138 error_set(errp, QERR_BLOCK_JOB_PAUSED, device);
2139 return;
2140 }
2141
2142 trace_qmp_block_job_cancel(job);
2143 block_job_cancel(job);
2144}
2145
2146void qmp_block_job_pause(const char *device, Error **errp)
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00002147{
2148 BlockJob *job = find_block_job(device);
2149
2150 if (!job) {
Paolo Bonzini7ef15072012-09-28 17:22:44 +02002151 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00002152 return;
2153 }
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02002154
2155 trace_qmp_block_job_pause(job);
2156 block_job_pause(job);
2157}
2158
2159void qmp_block_job_resume(const char *device, Error **errp)
2160{
2161 BlockJob *job = find_block_job(device);
2162
2163 if (!job) {
2164 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
Paolo Bonzini8acc72a2012-09-28 17:22:50 +02002165 return;
2166 }
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00002167
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02002168 trace_qmp_block_job_resume(job);
2169 block_job_resume(job);
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00002170}
Stefan Hajnoczifb5458c2012-01-18 14:40:49 +00002171
Paolo Bonziniaeae8832012-10-18 16:49:21 +02002172void qmp_block_job_complete(const char *device, Error **errp)
2173{
2174 BlockJob *job = find_block_job(device);
2175
2176 if (!job) {
2177 error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
2178 return;
2179 }
2180
2181 trace_qmp_block_job_complete(job);
2182 block_job_complete(job, errp);
2183}
2184
Kevin Wolfd26c9a12013-09-23 15:26:03 +02002185void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
2186{
2187 QmpOutputVisitor *ov = qmp_output_visitor_new();
2188 QObject *obj;
2189 QDict *qdict;
Kevin Wolfd26c9a12013-09-23 15:26:03 +02002190 Error *local_err = NULL;
2191
2192 /* Require an ID in the top level */
2193 if (!options->has_id) {
2194 error_setg(errp, "Block device needs an ID");
2195 goto fail;
2196 }
2197
2198 /* TODO Sort it out in raw-posix and drive_init: Reject aio=native with
2199 * cache.direct=false instead of silently switching to aio=threads, except
2200 * if called from drive_init.
2201 *
2202 * For now, simply forbidding the combination for all drivers will do. */
2203 if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) {
2204 bool direct = options->cache->has_direct && options->cache->direct;
2205 if (!options->has_cache && !direct) {
2206 error_setg(errp, "aio=native requires cache.direct=true");
2207 goto fail;
2208 }
2209 }
2210
2211 visit_type_BlockdevOptions(qmp_output_get_visitor(ov),
2212 &options, NULL, &local_err);
2213 if (error_is_set(&local_err)) {
2214 error_propagate(errp, local_err);
2215 goto fail;
2216 }
2217
2218 obj = qmp_output_get_qobject(ov);
2219 qdict = qobject_to_qdict(obj);
2220
2221 qdict_flatten(qdict);
2222
Max Reitzd095b462013-12-20 19:28:14 +01002223 blockdev_init(NULL, qdict, IF_NONE, &local_err);
Kevin Wolfb6810722013-09-20 11:33:11 +02002224 if (error_is_set(&local_err)) {
2225 error_propagate(errp, local_err);
Kevin Wolfd26c9a12013-09-23 15:26:03 +02002226 goto fail;
2227 }
2228
2229fail:
2230 qmp_output_visitor_cleanup(ov);
2231}
2232
Stefan Hajnoczifb5458c2012-01-18 14:40:49 +00002233static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs)
2234{
2235 BlockJobInfoList **prev = opaque;
2236 BlockJob *job = bs->job;
2237
2238 if (job) {
Paolo Bonzini30e628b2012-09-28 17:22:48 +02002239 BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1);
2240 elem->value = block_job_query(bs->job);
Stefan Hajnoczifb5458c2012-01-18 14:40:49 +00002241 (*prev)->next = elem;
2242 *prev = elem;
2243 }
2244}
2245
2246BlockJobInfoList *qmp_query_block_jobs(Error **errp)
2247{
2248 /* Dummy is a fake list element for holding the head pointer */
2249 BlockJobInfoList dummy = {};
2250 BlockJobInfoList *prev = &dummy;
2251 bdrv_iterate(do_qmp_query_block_jobs_one, &prev);
2252 return dummy.next;
2253}
Paolo Bonzini4d454572012-11-26 16:03:42 +01002254
Kevin Wolf00063832013-03-15 10:35:07 +01002255QemuOptsList qemu_common_drive_opts = {
Paolo Bonzini4d454572012-11-26 16:03:42 +01002256 .name = "drive",
Kevin Wolf00063832013-03-15 10:35:07 +01002257 .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head),
Paolo Bonzini4d454572012-11-26 16:03:42 +01002258 .desc = {
2259 {
Paolo Bonzini4d454572012-11-26 16:03:42 +01002260 .name = "snapshot",
2261 .type = QEMU_OPT_BOOL,
2262 .help = "enable/disable snapshot mode",
2263 },{
Paolo Bonzinia9384af2013-02-08 14:06:12 +01002264 .name = "discard",
2265 .type = QEMU_OPT_STRING,
2266 .help = "discard operation (ignore/off, unmap/on)",
2267 },{
Kevin Wolf29c4e2b2013-07-18 16:31:25 +02002268 .name = "cache.writeback",
2269 .type = QEMU_OPT_BOOL,
2270 .help = "enables writeback mode for any caches",
2271 },{
2272 .name = "cache.direct",
2273 .type = QEMU_OPT_BOOL,
2274 .help = "enables use of O_DIRECT (bypass the host page cache)",
2275 },{
2276 .name = "cache.no-flush",
2277 .type = QEMU_OPT_BOOL,
2278 .help = "ignore any flush requests for the device",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002279 },{
2280 .name = "aio",
2281 .type = QEMU_OPT_STRING,
2282 .help = "host AIO implementation (threads, native)",
2283 },{
2284 .name = "format",
2285 .type = QEMU_OPT_STRING,
2286 .help = "disk format (raw, qcow2, ...)",
2287 },{
2288 .name = "serial",
2289 .type = QEMU_OPT_STRING,
2290 .help = "disk serial number",
2291 },{
2292 .name = "rerror",
2293 .type = QEMU_OPT_STRING,
2294 .help = "read error action",
2295 },{
2296 .name = "werror",
2297 .type = QEMU_OPT_STRING,
2298 .help = "write error action",
2299 },{
Kevin Wolf0f227a92013-07-19 20:07:29 +02002300 .name = "read-only",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002301 .type = QEMU_OPT_BOOL,
2302 .help = "open drive file as read-only",
2303 },{
Kevin Wolf57975222013-07-17 14:41:54 +02002304 .name = "throttling.iops-total",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002305 .type = QEMU_OPT_NUMBER,
2306 .help = "limit total I/O operations per second",
2307 },{
Kevin Wolf57975222013-07-17 14:41:54 +02002308 .name = "throttling.iops-read",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002309 .type = QEMU_OPT_NUMBER,
2310 .help = "limit read operations per second",
2311 },{
Kevin Wolf57975222013-07-17 14:41:54 +02002312 .name = "throttling.iops-write",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002313 .type = QEMU_OPT_NUMBER,
2314 .help = "limit write operations per second",
2315 },{
Kevin Wolf57975222013-07-17 14:41:54 +02002316 .name = "throttling.bps-total",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002317 .type = QEMU_OPT_NUMBER,
2318 .help = "limit total bytes per second",
2319 },{
Kevin Wolf57975222013-07-17 14:41:54 +02002320 .name = "throttling.bps-read",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002321 .type = QEMU_OPT_NUMBER,
2322 .help = "limit read bytes per second",
2323 },{
Kevin Wolf57975222013-07-17 14:41:54 +02002324 .name = "throttling.bps-write",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002325 .type = QEMU_OPT_NUMBER,
2326 .help = "limit write bytes per second",
2327 },{
Benoît Canet3e9fab62013-09-02 14:14:40 +02002328 .name = "throttling.iops-total-max",
2329 .type = QEMU_OPT_NUMBER,
2330 .help = "I/O operations burst",
2331 },{
2332 .name = "throttling.iops-read-max",
2333 .type = QEMU_OPT_NUMBER,
2334 .help = "I/O operations read burst",
2335 },{
2336 .name = "throttling.iops-write-max",
2337 .type = QEMU_OPT_NUMBER,
2338 .help = "I/O operations write burst",
2339 },{
2340 .name = "throttling.bps-total-max",
2341 .type = QEMU_OPT_NUMBER,
2342 .help = "total bytes burst",
2343 },{
2344 .name = "throttling.bps-read-max",
2345 .type = QEMU_OPT_NUMBER,
2346 .help = "total bytes read burst",
2347 },{
2348 .name = "throttling.bps-write-max",
2349 .type = QEMU_OPT_NUMBER,
2350 .help = "total bytes write burst",
2351 },{
Benoît Canet2024c1d2013-09-02 14:14:41 +02002352 .name = "throttling.iops-size",
2353 .type = QEMU_OPT_NUMBER,
2354 .help = "when limiting by iops max size of an I/O in bytes",
2355 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01002356 .name = "copy-on-read",
2357 .type = QEMU_OPT_BOOL,
2358 .help = "copy read data from backing file into image file",
Paolo Bonzini4d454572012-11-26 16:03:42 +01002359 },
2360 { /* end of list */ }
2361 },
2362};
Kevin Wolf00063832013-03-15 10:35:07 +01002363
2364QemuOptsList qemu_drive_opts = {
2365 .name = "drive",
2366 .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
2367 .desc = {
Kevin Wolf492fdc62013-06-19 13:44:17 +02002368 /*
2369 * no elements => accept any params
2370 * validation will happen later
2371 */
Kevin Wolf00063832013-03-15 10:35:07 +01002372 { /* end of list */ }
2373 },
2374};