2 ===================================================================
3 --- new.orig/blockdev.c 2013-12-06 10:04:18.000000000 +0100
4 +++ new/blockdev.c 2013-12-06 10:07:21.000000000 +0100
6 #include "qmp-commands.h"
8 #include "sysemu/arch_init.h"
11 static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
18 static void eject_device(BlockDriverState *bs, int force, Error **errp)
20 if (bdrv_in_use(bs)) {
21 @@ -1736,6 +1736,436 @@
22 bdrv_put_ref_bh_schedule(bs);
25 +/* PVE backup related function */
27 +static struct PVEBackupState {
43 +typedef struct PVEBackupDevInfo {
44 + BlockDriverState *bs;
51 +static void pvebackup_run_next_job(void);
53 +static int pvebackup_dump_cb(void *opaque, BlockDriverState *target,
54 + int64_t sector_num, int n_sectors,
57 + PVEBackupDevInfo *di = opaque;
59 + if (sector_num & 0x7f) {
60 + if (!backup_state.error) {
61 + error_setg(&backup_state.error,
62 + "got unaligned write inside backup dump "
63 + "callback (sector %ld)", sector_num);
65 + return -1; // not aligned to cluster size
68 + int64_t cluster_num = sector_num >> 7;
69 + int size = n_sectors * BDRV_SECTOR_SIZE;
73 + if (backup_state.vmaw) {
74 + size_t zero_bytes = 0;
75 + ret = vma_writer_write(backup_state.vmaw, di->dev_id, cluster_num,
77 + backup_state.zero_bytes += zero_bytes;
81 + backup_state.zero_bytes += size;
85 + backup_state.transferred += size;
90 +static void pvebackup_cleanup(void)
92 + if (backup_state.vmaw) {
93 + backup_state.end_time = time(NULL);
94 + Error *local_err = NULL;
95 + vma_writer_close(backup_state.vmaw, &local_err);
96 + error_propagate(&backup_state.error, local_err);
97 + backup_state.vmaw = NULL;
100 + if (backup_state.di_list) {
101 + GList *l = backup_state.di_list;
103 + PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
104 + l = g_list_next(l);
107 + g_list_free(backup_state.di_list);
108 + backup_state.di_list = NULL;
112 +static void pvebackup_complete_cb(void *opaque, int ret)
114 + PVEBackupDevInfo *di = opaque;
116 + assert(backup_state.vmaw);
118 + di->completed = true;
120 + if (ret < 0 && !backup_state.error) {
121 + error_setg(&backup_state.error, "job failed with err %d - %s",
122 + ret, strerror(-ret));
125 + BlockDriverState *bs = di->bs;
129 + vma_writer_close_stream(backup_state.vmaw, di->dev_id);
131 + block_job_cb(bs, ret);
133 + if (!backup_state.cancel) {
134 + pvebackup_run_next_job();
138 +static void pvebackup_cancel(void *opaque)
140 + backup_state.cancel = true;
142 + if (!backup_state.error) {
143 + error_setg(&backup_state.error, "backup cancelled");
146 + /* drain all i/o (awake jobs waiting for aio) */
149 + GList *l = backup_state.di_list;
151 + PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
152 + l = g_list_next(l);
153 + if (!di->completed && di->bs) {
154 + BlockJob *job = di->bs->job;
156 + if (!di->completed) {
157 + block_job_cancel_sync(job);
163 + pvebackup_cleanup();
166 +void qmp_backup_cancel(Error **errp)
168 + Coroutine *co = qemu_coroutine_create(pvebackup_cancel);
169 + qemu_coroutine_enter(co, NULL);
171 + while (backup_state.vmaw) {
176 +static void pvebackup_run_next_job(void)
178 + GList *l = backup_state.di_list;
180 + PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
181 + l = g_list_next(l);
182 + if (!di->completed && di->bs && di->bs->job) {
183 + BlockJob *job = di->bs->job;
184 + if (block_job_is_paused(job)) {
185 + bool cancel = backup_state.error || backup_state.cancel;
187 + block_job_cancel(job);
189 + block_job_resume(job);
196 + pvebackup_cleanup();
199 +char *qmp_backup(const char *backup_file, bool has_format,
200 + BackupFormat format,
201 + bool has_config_file, const char *config_file,
202 + bool has_devlist, const char *devlist,
203 + bool has_speed, int64_t speed, Error **errp)
205 + BlockDriverState *bs;
206 + Error *local_err = NULL;
208 + VmaWriter *vmaw = NULL;
209 + gchar **devs = NULL;
210 + GList *di_list = NULL;
213 + if (backup_state.di_list) {
214 + error_set(errp, ERROR_CLASS_GENERIC_ERROR,
215 + "previous backup not finished");
219 + /* Todo: try to auto-detect format based on file name */
220 + format = has_format ? format : BACKUP_FORMAT_VMA;
222 + if (format != BACKUP_FORMAT_VMA) {
223 + error_set(errp, ERROR_CLASS_GENERIC_ERROR, "unknown backup format");
228 + devs = g_strsplit_set(devlist, ",;:", -1);
232 + bs = bdrv_find(*d);
234 + if (bdrv_is_read_only(bs)) {
235 + error_set(errp, QERR_DEVICE_IS_READ_ONLY, *d);
238 + if (!bdrv_is_inserted(bs)) {
239 + error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, *d);
242 + PVEBackupDevInfo *di = g_new0(PVEBackupDevInfo, 1);
244 + di_list = g_list_append(di_list, di);
246 + error_set(errp, QERR_DEVICE_NOT_FOUND, *d);
255 + while ((bs = bdrv_next(bs))) {
257 + if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
261 + PVEBackupDevInfo *di = g_new0(PVEBackupDevInfo, 1);
263 + di_list = g_list_append(di_list, di);
268 + error_set(errp, ERROR_CLASS_GENERIC_ERROR, "empty device list");
276 + PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
277 + l = g_list_next(l);
278 + if (bdrv_in_use(di->bs)) {
279 + error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(di->bs));
283 + ssize_t size = bdrv_getlength(di->bs);
285 + error_setg_errno(errp, -di->size, "bdrv_getlength failed");
292 + uuid_generate(uuid);
294 + vmaw = vma_writer_create(backup_file, uuid, &local_err);
296 + if (error_is_set(&local_err)) {
297 + error_propagate(errp, local_err);
302 + /* register all devices for vma writer */
305 + PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
306 + l = g_list_next(l);
308 + const char *devname = bdrv_get_device_name(di->bs);
309 + di->dev_id = vma_writer_register_stream(vmaw, devname, di->size);
310 + if (di->dev_id <= 0) {
311 + error_set(errp, ERROR_CLASS_GENERIC_ERROR,
312 + "register_stream failed");
317 + /* add configuration file to archive */
318 + if (has_config_file) {
319 + char *cdata = NULL;
321 + GError *err = NULL;
322 + if (!g_file_get_contents(config_file, &cdata, &clen, &err)) {
323 + error_setg(errp, "unable to read file '%s'", config_file);
327 + const char *basename = g_path_get_basename(config_file);
328 + if (vma_writer_add_config(vmaw, basename, cdata, clen) != 0) {
329 + error_setg(errp, "unable to add config data to vma archive");
336 + /* initialize global backup_state now */
338 + backup_state.cancel = false;
340 + if (backup_state.error) {
341 + error_free(backup_state.error);
342 + backup_state.error = NULL;
345 + backup_state.speed = (has_speed && speed > 0) ? speed : 0;
347 + backup_state.start_time = time(NULL);
348 + backup_state.end_time = 0;
350 + if (backup_state.backup_file) {
351 + g_free(backup_state.backup_file);
353 + backup_state.backup_file = g_strdup(backup_file);
355 + backup_state.vmaw = vmaw;
357 + uuid_copy(backup_state.uuid, uuid);
358 + uuid_unparse_lower(uuid, backup_state.uuid_str);
360 + backup_state.di_list = di_list;
362 + backup_state.total = total;
363 + backup_state.transferred = 0;
364 + backup_state.zero_bytes = 0;
366 + /* start all jobs (paused state) */
369 + PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
370 + l = g_list_next(l);
372 + backup_start(di->bs, NULL, speed, MIRROR_SYNC_MODE_FULL,
373 + BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT,
374 + pvebackup_dump_cb, pvebackup_complete_cb, di,
376 + if (local_err != NULL) {
377 + error_setg(&backup_state.error, "backup_job_create failed");
378 + pvebackup_cancel(NULL);
382 + if (!backup_state.error) {
383 + pvebackup_run_next_job(); // run one job
386 + return g_strdup(backup_state.uuid_str);
393 + l = g_list_next(l);
395 + g_list_free(di_list);
403 + vma_writer_close(vmaw, &err);
404 + unlink(backup_file);
410 +BackupStatus *qmp_query_backup(Error **errp)
412 + BackupStatus *info = g_malloc0(sizeof(*info));
414 + if (!backup_state.start_time) {
415 + /* not started, return {} */
419 + info->has_status = true;
420 + info->has_start_time = true;
421 + info->start_time = backup_state.start_time;
423 + if (backup_state.backup_file) {
424 + info->has_backup_file = true;
425 + info->backup_file = g_strdup(backup_state.backup_file);
428 + info->has_uuid = true;
429 + info->uuid = g_strdup(backup_state.uuid_str);
431 + if (backup_state.end_time) {
432 + if (backup_state.error) {
433 + info->status = g_strdup("error");
434 + info->has_errmsg = true;
435 + info->errmsg = g_strdup(error_get_pretty(backup_state.error));
437 + info->status = g_strdup("done");
439 + info->has_end_time = true;
440 + info->end_time = backup_state.end_time;
442 + info->status = g_strdup("active");
445 + info->has_total = true;
446 + info->total = backup_state.total;
447 + info->has_zero_bytes = true;
448 + info->zero_bytes = backup_state.zero_bytes;
449 + info->has_transferred = true;
450 + info->transferred = backup_state.transferred;
455 void qmp_block_stream(const char *device, bool has_base,
456 const char *base, bool has_speed, int64_t speed,
457 bool has_on_error, BlockdevOnError on_error,
458 Index: new/hmp-commands.hx
459 ===================================================================
460 --- new.orig/hmp-commands.hx 2013-12-03 06:36:18.000000000 +0100
461 +++ new/hmp-commands.hx 2013-12-06 10:06:44.000000000 +0100
463 Copy data from a backing file into a block device.
468 + .args_type = "backupfile:s,speed:o?,devlist:s?",
469 + .params = "backupfile [speed [devlist]]",
470 + .help = "create a VM Backup.",
471 + .mhandler.cmd = hmp_backup,
481 + .name = "backup_cancel",
484 + .help = "cancel the current VM backup",
485 + .mhandler.cmd = hmp_backup_cancel,
490 +@findex backup_cancel
491 +Cancel the current VM backup.
496 .name = "block_job_set_speed",
497 .args_type = "device:B,speed:o",
498 @@ -1692,6 +1721,8 @@
501 show user network stack connection states
505 show migration status
506 @item info migrate_capabilities
508 ===================================================================
509 --- new.orig/hmp.c 2013-12-06 10:04:18.000000000 +0100
510 +++ new/hmp.c 2013-12-06 10:06:44.000000000 +0100
512 qapi_free_MouseInfoList(mice_list);
515 +void hmp_info_backup(Monitor *mon, const QDict *qdict)
517 + BackupStatus *info;
519 + info = qmp_query_backup(NULL);
520 + if (info->has_status) {
521 + if (info->has_errmsg) {
522 + monitor_printf(mon, "Backup status: %s - %s\n",
523 + info->status, info->errmsg);
525 + monitor_printf(mon, "Backup status: %s\n", info->status);
529 + if (info->has_backup_file) {
530 + monitor_printf(mon, "Start time: %s", ctime(&info->start_time));
531 + if (info->end_time) {
532 + monitor_printf(mon, "End time: %s", ctime(&info->end_time));
535 + int per = (info->has_total && info->total &&
536 + info->has_transferred && info->transferred) ?
537 + (info->transferred * 100)/info->total : 0;
538 + int zero_per = (info->has_total && info->total &&
539 + info->has_zero_bytes && info->zero_bytes) ?
540 + (info->zero_bytes * 100)/info->total : 0;
541 + monitor_printf(mon, "Backup file: %s\n", info->backup_file);
542 + monitor_printf(mon, "Backup uuid: %s\n", info->uuid);
543 + monitor_printf(mon, "Total size: %zd\n", info->total);
544 + monitor_printf(mon, "Transferred bytes: %zd (%d%%)\n",
545 + info->transferred, per);
546 + monitor_printf(mon, "Zero bytes: %zd (%d%%)\n",
547 + info->zero_bytes, zero_per);
550 + qapi_free_BackupStatus(info);
553 void hmp_info_migrate(Monitor *mon, const QDict *qdict)
556 @@ -1193,6 +1231,29 @@
558 hmp_handle_error(mon, &error);
561 +void hmp_backup_cancel(Monitor *mon, const QDict *qdict)
563 + Error *error = NULL;
565 + qmp_backup_cancel(&error);
567 + hmp_handle_error(mon, &error);
570 +void hmp_backup(Monitor *mon, const QDict *qdict)
572 + Error *error = NULL;
574 + const char *backup_file = qdict_get_str(qdict, "backupfile");
575 + const char *devlist = qdict_get_try_str(qdict, "devlist");
576 + int64_t speed = qdict_get_try_int(qdict, "speed", 0);
578 + qmp_backup(backup_file, true, BACKUP_FORMAT_VMA, false, NULL, !!devlist,
579 + devlist, qdict_haskey(qdict, "speed"), speed, &error);
581 + hmp_handle_error(mon, &error);
584 void hmp_block_job_set_speed(Monitor *mon, const QDict *qdict)
587 ===================================================================
588 --- new.orig/hmp.h 2013-12-03 06:36:18.000000000 +0100
589 +++ new/hmp.h 2013-12-06 10:04:22.000000000 +0100
591 void hmp_info_migrate(Monitor *mon, const QDict *qdict);
592 void hmp_info_migrate_capabilities(Monitor *mon, const QDict *qdict);
593 void hmp_info_migrate_cache_size(Monitor *mon, const QDict *qdict);
594 +void hmp_info_backup(Monitor *mon, const QDict *qdict);
595 void hmp_info_cpus(Monitor *mon, const QDict *qdict);
596 void hmp_info_block(Monitor *mon, const QDict *qdict);
597 void hmp_info_blockstats(Monitor *mon, const QDict *qdict);
599 void hmp_change(Monitor *mon, const QDict *qdict);
600 void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict);
601 void hmp_block_stream(Monitor *mon, const QDict *qdict);
602 +void hmp_backup(Monitor *mon, const QDict *qdict);
603 +void hmp_backup_cancel(Monitor *mon, const QDict *qdict);
604 void hmp_block_job_set_speed(Monitor *mon, const QDict *qdict);
605 void hmp_block_job_cancel(Monitor *mon, const QDict *qdict);
606 void hmp_block_job_pause(Monitor *mon, const QDict *qdict);
608 ===================================================================
609 --- new.orig/monitor.c 2013-12-03 06:36:18.000000000 +0100
610 +++ new/monitor.c 2013-12-06 10:04:22.000000000 +0100
611 @@ -2880,6 +2880,13 @@
618 + .help = "show backup status",
619 + .mhandler.cmd = hmp_info_backup,
625 Index: new/qapi-schema.json
626 ===================================================================
627 --- new.orig/qapi-schema.json 2013-12-06 10:04:18.000000000 +0100
628 +++ new/qapi-schema.json 2013-12-06 10:06:44.000000000 +0100
631 { 'command': 'query-events', 'returns': ['EventInfo'] }
635 +# Detailed backup status.
637 +# @status: #optional string describing the current backup status.
638 +# This can be 'active', 'done', 'error'. If this field is not
639 +# returned, no backup process has been initiated
641 +# @errmsg: #optional error message (only returned if status is 'error')
643 +# @total: #optional total amount of bytes involved in the backup process
645 +# @transferred: #optional amount of bytes already backed up.
647 +# @zero-bytes: #optional amount of 'zero' bytes detected.
649 +# @start-time: #optional time (epoch) when backup job started.
651 +# @end-time: #optional time (epoch) when backup job finished.
653 +# @backupfile: #optional backup file name
655 +# @uuid: #optional uuid for this backup job
658 +{ 'type': 'BackupStatus',
659 + 'data': {'*status': 'str', '*errmsg': 'str', '*total': 'int',
660 + '*transferred': 'int', '*zero-bytes': 'int',
661 + '*start-time': 'int', '*end-time': 'int',
662 + '*backup-file': 'str', '*uuid': 'str' } }
667 +# An enumeration of supported backup formats.
669 +# @vma: Proxmox vma backup format
671 +{ 'enum': 'BackupFormat',
672 + 'data': [ 'vma' ] }
677 +# Starts a VM backup.
679 +# @backup-file: the backup file name
681 +# @format: format of the backup file
683 +# @config-filename: #optional name of a configuration file to include into
684 +# the backup archive.
686 +# @speed: #optional the maximum speed, in bytes per second
688 +# @devlist: #optional list of block device names (separated by ',', ';'
689 +# or ':'). By default the backup includes all writable block devices.
691 +# Returns: the uuid of the backup job
694 +{ 'command': 'backup', 'data': { 'backup-file': 'str',
695 + '*format': 'BackupFormat',
696 + '*config-file': 'str',
697 + '*devlist': 'str', '*speed': 'int' },
703 +# Returns information about current/last backup task.
705 +# Returns: @BackupStatus
708 +{ 'command': 'query-backup', 'returns': 'BackupStatus' }
713 +# Cancel the current executing backup process.
715 +# Returns: nothing on success
717 +# Notes: This command succeeds even if there is no backup process running.
720 +{ 'command': 'backup-cancel' }
725 Index: new/qmp-commands.hx
726 ===================================================================
727 --- new.orig/qmp-commands.hx 2013-12-06 10:04:18.000000000 +0100
728 +++ new/qmp-commands.hx 2013-12-06 10:04:22.000000000 +0100
734 + .args_type = "backup-file:s,format:s?,config-file:F?,speed:o?,devlist:s?",
735 + .mhandler.cmd_new = qmp_marshal_input_backup,
739 + .name = "backup-cancel",
741 + .mhandler.cmd_new = qmp_marshal_input_backup_cancel,
745 + .name = "query-backup",
747 + .mhandler.cmd_new = qmp_marshal_input_query_backup,
751 .name = "block-job-set-speed",
752 .args_type = "device:B,speed:o",
753 .mhandler.cmd_new = qmp_marshal_input_block_job_set_speed,