#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "block/blockjob.h"
+#include "block/throttle-groups.h"
#include "monitor/monitor.h"
+#include "qemu/error-report.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qapi/qmp/types.h"
#include "qapi-visit.h"
+#include "qapi/qmp/qerror.h"
#include "qapi/qmp-output-visitor.h"
#include "qapi/util.h"
#include "sysemu/sysemu.h"
QemuOpts *drive_def(const char *optstr)
{
- return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0);
+ return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false);
}
QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
const char *optstr)
{
QemuOpts *opts;
- char buf[32];
opts = drive_def(optstr);
if (!opts) {
return NULL;
}
if (type != IF_DEFAULT) {
- qemu_opt_set(opts, "if", if_name[type]);
+ qemu_opt_set(opts, "if", if_name[type], &error_abort);
}
if (index >= 0) {
- snprintf(buf, sizeof(buf), "%d", index);
- qemu_opt_set(opts, "index", buf);
+ qemu_opt_set_number(opts, "index", index, &error_abort);
}
if (file)
- qemu_opt_set(opts, "file", file);
+ qemu_opt_set(opts, "file", file, &error_abort);
return opts;
}
ThrottleConfig cfg;
int snapshot = 0;
bool copy_on_read;
- int ret;
Error *error = NULL;
QemuOpts *opts;
const char *id;
bool has_driver_specific_opts;
BlockdevDetectZeroesOptions detect_zeroes;
- BlockDriver *drv = NULL;
+ const char *throttling_group;
/* Check common options by copying from bs_opts to opts, all other options
* stay in bs_opts for processing by bdrv_open(). */
}
}
- if (qemu_opt_get_bool(opts, "cache.writeback", true)) {
+ if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true)) {
bdrv_flags |= BDRV_O_CACHE_WB;
}
- if (qemu_opt_get_bool(opts, "cache.direct", false)) {
+ if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_DIRECT, false)) {
bdrv_flags |= BDRV_O_NOCACHE;
}
- if (qemu_opt_get_bool(opts, "cache.no-flush", false)) {
+ if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, false)) {
bdrv_flags |= BDRV_O_NO_FLUSH;
}
goto early_err;
}
- drv = bdrv_find_format(buf);
- if (!drv) {
- error_setg(errp, "'%s' invalid format", buf);
+ if (qdict_haskey(bs_opts, "driver")) {
+ error_setg(errp, "Cannot specify both 'driver' and 'format'");
goto early_err;
}
+ qdict_put(bs_opts, "driver", qstring_from_str(buf));
}
/* disk I/O throttling */
cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0);
+ throttling_group = qemu_opt_get(opts, "throttling.group");
+
if (!check_throttle_config(&cfg, &error)) {
error_propagate(errp, error);
goto early_err;
}
/* init */
- blk = blk_new_with_bs(qemu_opts_id(opts), errp);
- if (!blk) {
- goto early_err;
- }
- bs = blk_bs(blk);
- bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
- bs->read_only = ro;
- bs->detect_zeroes = detect_zeroes;
+ if ((!file || !*file) && !has_driver_specific_opts) {
+ blk = blk_new_with_bs(qemu_opts_id(opts), errp);
+ if (!blk) {
+ goto early_err;
+ }
- bdrv_set_on_error(bs, on_read_error, on_write_error);
+ bs = blk_bs(blk);
+ bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
+ bs->read_only = ro;
- /* disk I/O throttling */
- if (throttle_enabled(&cfg)) {
- bdrv_io_limits_enable(bs);
- bdrv_set_io_limits(bs, &cfg);
- }
-
- if (!file || !*file) {
- if (has_driver_specific_opts) {
+ QDECREF(bs_opts);
+ } else {
+ if (file && !*file) {
file = NULL;
- } else {
- QDECREF(bs_opts);
- qemu_opts_del(opts);
- return blk;
}
- }
- if (snapshot) {
- /* always use cache=unsafe with snapshot */
- bdrv_flags &= ~BDRV_O_CACHE_MASK;
- bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH);
- }
- if (copy_on_read) {
- bdrv_flags |= BDRV_O_COPY_ON_READ;
- }
+ if (snapshot) {
+ /* always use cache=unsafe with snapshot */
+ bdrv_flags &= ~BDRV_O_CACHE_MASK;
+ bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH);
+ }
+
+ if (copy_on_read) {
+ bdrv_flags |= BDRV_O_COPY_ON_READ;
+ }
- if (runstate_check(RUN_STATE_INMIGRATE)) {
- bdrv_flags |= BDRV_O_INCOMING;
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ bdrv_flags |= BDRV_O_INCOMING;
+ }
+
+ bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
+
+ blk = blk_new_open(qemu_opts_id(opts), file, NULL, bs_opts, bdrv_flags,
+ errp);
+ if (!blk) {
+ goto err_no_bs_opts;
+ }
+ bs = blk_bs(blk);
}
- bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
+ bs->detect_zeroes = detect_zeroes;
- QINCREF(bs_opts);
- ret = bdrv_open(&bs, file, NULL, bs_opts, bdrv_flags, drv, &error);
- assert(bs == blk_bs(blk));
+ bdrv_set_on_error(bs, on_read_error, on_write_error);
- if (ret < 0) {
- error_setg(errp, "could not open disk image %s: %s",
- file ?: blk_name(blk), error_get_pretty(error));
- error_free(error);
- goto err;
+ /* disk I/O throttling */
+ if (throttle_enabled(&cfg)) {
+ if (!throttling_group) {
+ throttling_group = blk_name(blk);
+ }
+ bdrv_io_limits_enable(bs, throttling_group);
+ bdrv_set_io_limits(bs, &cfg);
}
if (bdrv_key_required(bs)) {
autostart = 0;
}
- QDECREF(bs_opts);
+err_no_bs_opts:
qemu_opts_del(opts);
-
return blk;
-err:
- blk_unref(blk);
early_err:
qemu_opts_del(opts);
err_no_opts:
/* rename all items in opts */
while ((value = qemu_opt_get(opts, from))) {
- qemu_opt_set(opts, to, value);
+ qemu_opt_set(opts, to, value, &error_abort);
qemu_opt_unset(opts, from);
}
}
{ "iops_size", "throttling.iops-size" },
+ { "group", "throttling.group" },
+
{ "readonly", "read-only" },
};
qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to,
&local_err);
if (local_err) {
- error_report("%s", error_get_pretty(local_err));
- error_free(local_err);
+ error_report_err(local_err);
return NULL;
}
}
}
/* Specific options take precedence */
- if (!qemu_opt_get(all_opts, "cache.writeback")) {
- qemu_opt_set_bool(all_opts, "cache.writeback",
- !!(flags & BDRV_O_CACHE_WB));
+ if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) {
+ qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB,
+ !!(flags & BDRV_O_CACHE_WB), &error_abort);
}
- if (!qemu_opt_get(all_opts, "cache.direct")) {
- qemu_opt_set_bool(all_opts, "cache.direct",
- !!(flags & BDRV_O_NOCACHE));
+ if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) {
+ qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT,
+ !!(flags & BDRV_O_NOCACHE), &error_abort);
}
- if (!qemu_opt_get(all_opts, "cache.no-flush")) {
- qemu_opt_set_bool(all_opts, "cache.no-flush",
- !!(flags & BDRV_O_NO_FLUSH));
+ if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) {
+ qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH,
+ !!(flags & BDRV_O_NO_FLUSH), &error_abort);
}
qemu_opt_unset(all_opts, "cache");
}
&error_abort);
qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err);
if (local_err) {
- error_report("%s", error_get_pretty(local_err));
- error_free(local_err);
+ error_report_err(local_err);
goto fail;
}
devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
&error_abort);
if (arch_type == QEMU_ARCH_S390X) {
- qemu_opt_set(devopts, "driver", "virtio-blk-s390");
+ qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort);
} else {
- qemu_opt_set(devopts, "driver", "virtio-blk-pci");
+ qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort);
}
- qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"));
+ qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"),
+ &error_abort);
if (devaddr) {
- qemu_opt_set(devopts, "addr", devaddr);
+ qemu_opt_set(devopts, "addr", devaddr, &error_abort);
}
}
bs_opts = NULL;
if (!blk) {
if (local_err) {
- error_report("%s", error_get_pretty(local_err));
- error_free(local_err);
+ error_report_err(local_err);
}
goto fail;
} else {
return dinfo;
}
-void do_commit(Monitor *mon, const QDict *qdict)
+void hmp_commit(Monitor *mon, const QDict *qdict)
{
const char *device = qdict_get_str(qdict, "device");
- BlockDriverState *bs;
+ BlockBackend *blk;
int ret;
if (!strcmp(device, "all")) {
ret = bdrv_commit_all();
} else {
- bs = bdrv_find(device);
- if (!bs) {
+ blk = blk_by_name(device);
+ if (!blk) {
monitor_printf(mon, "Device '%s' not found\n", device);
return;
}
- ret = bdrv_commit(bs);
+ ret = bdrv_commit(blk_bs(blk));
}
if (ret < 0) {
monitor_printf(mon, "'commit' error for '%s': %s\n", device,
const char *name,
Error **errp)
{
- BlockDriverState *bs = bdrv_find(device);
+ BlockDriverState *bs;
+ BlockBackend *blk;
+ AioContext *aio_context;
QEMUSnapshotInfo sn;
Error *local_err = NULL;
SnapshotInfo *info = NULL;
int ret;
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return NULL;
}
+ bs = blk_bs(blk);
if (!has_id) {
id = NULL;
return NULL;
}
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) {
+ goto out_aio_context;
+ }
+
ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err);
if (local_err) {
error_propagate(errp, local_err);
- return NULL;
+ goto out_aio_context;
}
if (!ret) {
error_setg(errp,
"Snapshot with id '%s' and name '%s' does not exist on "
"device '%s'",
STR_OR_NULL(id), STR_OR_NULL(name), device);
- return NULL;
+ goto out_aio_context;
}
bdrv_snapshot_delete(bs, id, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
- return NULL;
+ goto out_aio_context;
}
+ aio_context_release(aio_context);
+
info = g_new0(SnapshotInfo, 1);
info->id = g_strdup(sn.id_str);
info->name = g_strdup(sn.name);
info->vm_clock_sec = sn.vm_clock_nsec / 1000000000;
return info;
+
+out_aio_context:
+ aio_context_release(aio_context);
+ return NULL;
+}
+
+/**
+ * block_dirty_bitmap_lookup:
+ * Return a dirty bitmap (if present), after validating
+ * the node reference and bitmap names.
+ *
+ * @node: The name of the BDS node to search for bitmaps
+ * @name: The name of the bitmap to search for
+ * @pbs: Output pointer for BDS lookup, if desired. Can be NULL.
+ * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL.
+ * @errp: Output pointer for error information. Can be NULL.
+ *
+ * @return: A bitmap object on success, or NULL on failure.
+ */
+static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node,
+ const char *name,
+ BlockDriverState **pbs,
+ AioContext **paio,
+ Error **errp)
+{
+ BlockDriverState *bs;
+ BdrvDirtyBitmap *bitmap;
+ AioContext *aio_context;
+
+ if (!node) {
+ error_setg(errp, "Node cannot be NULL");
+ return NULL;
+ }
+ if (!name) {
+ error_setg(errp, "Bitmap name cannot be NULL");
+ return NULL;
+ }
+ bs = bdrv_lookup_bs(node, node, NULL);
+ if (!bs) {
+ error_setg(errp, "Node '%s' not found", node);
+ return NULL;
+ }
+
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
+ bitmap = bdrv_find_dirty_bitmap(bs, name);
+ if (!bitmap) {
+ error_setg(errp, "Dirty bitmap '%s' not found", name);
+ goto fail;
+ }
+
+ if (pbs) {
+ *pbs = bs;
+ }
+ if (paio) {
+ *paio = aio_context;
+ } else {
+ aio_context_release(aio_context);
+ }
+
+ return bitmap;
+
+ fail:
+ aio_context_release(aio_context);
+ return NULL;
}
-/* New and old BlockDriverState structs for group snapshots */
+/* New and old BlockDriverState structs for atomic group operations */
typedef struct BlkTransactionState BlkTransactionState;
typedef struct InternalSnapshotState {
BlkTransactionState common;
BlockDriverState *bs;
+ AioContext *aio_context;
QEMUSnapshotInfo sn;
} InternalSnapshotState;
Error *local_err = NULL;
const char *device;
const char *name;
+ BlockBackend *blk;
BlockDriverState *bs;
QEMUSnapshotInfo old_sn, *sn;
bool ret;
name = internal->name;
/* 2. check for validation */
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
+ bs = blk_bs(blk);
+
+ /* AioContext is released in .clean() */
+ state->aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(state->aio_context);
if (!bdrv_is_inserted(bs)) {
- error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
+ error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
+ return;
+ }
+
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) {
return;
}
if (bdrv_is_read_only(bs)) {
- error_set(errp, QERR_DEVICE_IS_READ_ONLY, device);
+ error_setg(errp, "Device '%s' is read only", device);
return;
}
if (!bdrv_can_snapshot(bs)) {
- error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED,
- bs->drv->format_name, device, "internal snapshot");
+ error_setg(errp, "Block format '%s' used by device '%s' "
+ "does not support internal snapshots",
+ bs->drv->format_name, device);
return;
}
}
}
+static void internal_snapshot_clean(BlkTransactionState *common)
+{
+ InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState,
+ common, common);
+
+ if (state->aio_context) {
+ aio_context_release(state->aio_context);
+ }
+}
+
/* external snapshot private data */
typedef struct ExternalSnapshotState {
BlkTransactionState common;
BlockDriverState *old_bs;
BlockDriverState *new_bs;
+ AioContext *aio_context;
} ExternalSnapshotState;
static void external_snapshot_prepare(BlkTransactionState *common,
/* start processing */
drv = bdrv_find_format(format);
if (!drv) {
- error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
+ error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
return;
}
return;
}
+ /* Acquire AioContext now so any threads operating on old_bs stop */
+ state->aio_context = bdrv_get_aio_context(state->old_bs);
+ aio_context_acquire(state->aio_context);
+
if (!bdrv_is_inserted(state->old_bs)) {
- error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
+ error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
return;
}
if (!bdrv_is_read_only(state->old_bs)) {
if (bdrv_flush(state->old_bs)) {
- error_set(errp, QERR_IO_ERROR);
+ error_setg(errp, QERR_IO_ERROR);
return;
}
}
if (!bdrv_is_first_non_filter(state->old_bs)) {
- error_set(errp, QERR_FEATURE_DISABLED, "snapshot");
+ error_setg(errp, QERR_FEATURE_DISABLED, "snapshot");
return;
}
ExternalSnapshotState *state =
DO_UPCAST(ExternalSnapshotState, common, common);
+ bdrv_set_aio_context(state->new_bs, state->aio_context);
+
/* This removes our old bs and adds the new bs */
bdrv_append(state->new_bs, state->old_bs);
/* We don't need (or want) to use the transactional
* don't want to abort all of them if one of them fails the reopen */
bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR,
NULL);
+
+ aio_context_release(state->aio_context);
}
static void external_snapshot_abort(BlkTransactionState *common)
if (state->new_bs) {
bdrv_unref(state->new_bs);
}
+ if (state->aio_context) {
+ aio_context_release(state->aio_context);
+ }
}
typedef struct DriveBackupState {
BlkTransactionState common;
BlockDriverState *bs;
+ AioContext *aio_context;
BlockJob *job;
} DriveBackupState;
static void drive_backup_prepare(BlkTransactionState *common, Error **errp)
{
DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
+ BlockDriverState *bs;
+ BlockBackend *blk;
DriveBackup *backup;
Error *local_err = NULL;
assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP);
backup = common->action->drive_backup;
+ blk = blk_by_name(backup->device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", backup->device);
+ return;
+ }
+ bs = blk_bs(blk);
+
+ /* AioContext is released in .clean() */
+ state->aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(state->aio_context);
+
qmp_drive_backup(backup->device, backup->target,
backup->has_format, backup->format,
backup->sync,
backup->has_mode, backup->mode,
backup->has_speed, backup->speed,
+ backup->has_bitmap, backup->bitmap,
backup->has_on_source_error, backup->on_source_error,
backup->has_on_target_error, backup->on_target_error,
&local_err);
if (local_err) {
error_propagate(errp, local_err);
- state->bs = NULL;
- state->job = NULL;
return;
}
- state->bs = bdrv_find(backup->device);
+ state->bs = bs;
state->job = state->bs->job;
}
}
}
+static void drive_backup_clean(BlkTransactionState *common)
+{
+ DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
+
+ if (state->aio_context) {
+ aio_context_release(state->aio_context);
+ }
+}
+
+typedef struct BlockdevBackupState {
+ BlkTransactionState common;
+ BlockDriverState *bs;
+ BlockJob *job;
+ AioContext *aio_context;
+} BlockdevBackupState;
+
+static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp)
+{
+ BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
+ BlockdevBackup *backup;
+ BlockDriverState *bs, *target;
+ BlockBackend *blk;
+ Error *local_err = NULL;
+
+ assert(common->action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP);
+ backup = common->action->blockdev_backup;
+
+ blk = blk_by_name(backup->device);
+ if (!blk) {
+ error_setg(errp, "Device '%s' not found", backup->device);
+ return;
+ }
+ bs = blk_bs(blk);
+
+ blk = blk_by_name(backup->target);
+ if (!blk) {
+ error_setg(errp, "Device '%s' not found", backup->target);
+ return;
+ }
+ target = blk_bs(blk);
+
+ /* AioContext is released in .clean() */
+ state->aio_context = bdrv_get_aio_context(bs);
+ if (state->aio_context != bdrv_get_aio_context(target)) {
+ state->aio_context = NULL;
+ error_setg(errp, "Backup between two IO threads is not implemented");
+ return;
+ }
+ aio_context_acquire(state->aio_context);
+
+ qmp_blockdev_backup(backup->device, backup->target,
+ backup->sync,
+ backup->has_speed, backup->speed,
+ backup->has_on_source_error, backup->on_source_error,
+ backup->has_on_target_error, backup->on_target_error,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ state->bs = bs;
+ state->job = state->bs->job;
+}
+
+static void blockdev_backup_abort(BlkTransactionState *common)
+{
+ BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
+ BlockDriverState *bs = state->bs;
+
+ /* Only cancel if it's the job we started */
+ if (bs && bs->job && bs->job == state->job) {
+ block_job_cancel_sync(bs->job);
+ }
+}
+
+static void blockdev_backup_clean(BlkTransactionState *common)
+{
+ BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
+
+ if (state->aio_context) {
+ aio_context_release(state->aio_context);
+ }
+}
+
static void abort_prepare(BlkTransactionState *common, Error **errp)
{
error_setg(errp, "Transaction aborted using Abort action");
.instance_size = sizeof(DriveBackupState),
.prepare = drive_backup_prepare,
.abort = drive_backup_abort,
+ .clean = drive_backup_clean,
+ },
+ [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = {
+ .instance_size = sizeof(BlockdevBackupState),
+ .prepare = blockdev_backup_prepare,
+ .abort = blockdev_backup_abort,
+ .clean = blockdev_backup_clean,
},
[TRANSACTION_ACTION_KIND_ABORT] = {
.instance_size = sizeof(BlkTransactionState),
.instance_size = sizeof(InternalSnapshotState),
.prepare = internal_snapshot_prepare,
.abort = internal_snapshot_abort,
+ .clean = internal_snapshot_clean,
},
};
/*
- * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail
- * then we do not pivot any of the devices in the group, and abandon the
- * snapshots
+ * 'Atomic' group operations. The operations are performed as a set, and if
+ * any fail then we roll back all operations in the group.
*/
void qmp_transaction(TransactionActionList *dev_list, Error **errp)
{
QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states;
QSIMPLEQ_INIT(&snap_bdrv_states);
- /* drain all i/o before any snapshots */
+ /* drain all i/o before any operations */
bdrv_drain_all();
- /* We don't do anything in this loop that commits us to the snapshot */
+ /* We don't do anything in this loop that commits us to the operations */
while (NULL != dev_entry) {
TransactionAction *dev_info = NULL;
const BdrvActionOps *ops;
goto exit;
delete_and_fail:
- /*
- * failure, and it is all-or-none; abandon each new bs, and keep using
- * the original bs for all images
- */
+ /* failure, and it is all-or-none; roll back all operations */
QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) {
if (state->ops->abort) {
state->ops->abort(state);
static void eject_device(BlockBackend *blk, int force, Error **errp)
{
BlockDriverState *bs = blk_bs(blk);
+ AioContext *aio_context;
+
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) {
- return;
+ goto out;
}
if (!blk_dev_has_removable_media(blk)) {
error_setg(errp, "Device '%s' is not removable",
bdrv_get_device_name(bs));
- return;
+ goto out;
}
if (blk_dev_is_medium_locked(blk) && !blk_dev_is_tray_open(blk)) {
if (!force) {
error_setg(errp, "Device '%s' is locked",
bdrv_get_device_name(bs));
- return;
+ goto out;
}
}
bdrv_close(bs);
+
+out:
+ aio_context_release(aio_context);
}
void qmp_eject(const char *device, bool has_force, bool force, Error **errp)
blk = blk_by_name(device);
if (!blk) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
{
Error *local_err = NULL;
BlockDriverState *bs;
- int err;
+ AioContext *aio_context;
bs = bdrv_lookup_bs(has_device ? device : NULL,
has_node_name ? node_name : NULL,
return;
}
- err = bdrv_set_key(bs, password);
- if (err == -EINVAL) {
- error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
- return;
- } else if (err < 0) {
- error_set(errp, QERR_INVALID_PASSWORD);
- return;
- }
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
+ bdrv_add_key(bs, password, errp);
+
+ aio_context_release(aio_context);
}
+/* Assumes AioContext is held */
static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
int bdrv_flags, BlockDriver *drv,
const char *password, Error **errp)
return;
}
- if (bdrv_key_required(bs)) {
- if (password) {
- if (bdrv_set_key(bs, password) < 0) {
- error_set(errp, QERR_INVALID_PASSWORD);
- }
- } else {
- error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs),
- bdrv_get_encrypted_filename(bs));
- }
- } else if (password) {
- error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
- }
+ bdrv_add_key(bs, password, errp);
}
void qmp_change_blockdev(const char *device, const char *filename,
{
BlockBackend *blk;
BlockDriverState *bs;
+ AioContext *aio_context;
BlockDriver *drv = NULL;
int bdrv_flags;
Error *err = NULL;
blk = blk_by_name(device);
if (!blk) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
bs = blk_bs(blk);
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
if (format) {
drv = bdrv_find_whitelisted_format(format, bs->read_only);
if (!drv) {
- error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
- return;
+ error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
+ goto out;
}
}
eject_device(blk, 0, &err);
if (err) {
error_propagate(errp, err);
- return;
+ goto out;
}
bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR;
bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0;
qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp);
+
+out:
+ aio_context_release(aio_context);
}
/* throttling disk I/O limits */
bool has_iops_wr_max,
int64_t iops_wr_max,
bool has_iops_size,
- int64_t iops_size, Error **errp)
+ int64_t iops_size,
+ bool has_group,
+ const char *group, Error **errp)
{
ThrottleConfig cfg;
BlockDriverState *bs;
+ BlockBackend *blk;
AioContext *aio_context;
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
+ bs = blk_bs(blk);
memset(&cfg, 0, sizeof(cfg));
cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps;
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
- if (!bs->io_limits_enabled && throttle_enabled(&cfg)) {
- bdrv_io_limits_enable(bs);
- } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) {
+ if (throttle_enabled(&cfg)) {
+ /* Enable I/O limits if they're not enabled yet, otherwise
+ * just update the throttling group. */
+ if (!bs->io_limits_enabled) {
+ bdrv_io_limits_enable(bs, has_group ? group : device);
+ } else if (has_group) {
+ bdrv_io_limits_update_group(bs, group);
+ }
+ /* Set the new throttling configuration */
+ bdrv_set_io_limits(bs, &cfg);
+ } else if (bs->io_limits_enabled) {
+ /* If all throttling settings are set to 0, disable I/O limits */
bdrv_io_limits_disable(bs);
}
- if (bs->io_limits_enabled) {
- bdrv_set_io_limits(bs, &cfg);
+ aio_context_release(aio_context);
+}
+
+void qmp_block_dirty_bitmap_add(const char *node, const char *name,
+ bool has_granularity, uint32_t granularity,
+ Error **errp)
+{
+ AioContext *aio_context;
+ BlockDriverState *bs;
+
+ if (!name || name[0] == '\0') {
+ error_setg(errp, "Bitmap name cannot be empty");
+ return;
+ }
+
+ bs = bdrv_lookup_bs(node, node, errp);
+ if (!bs) {
+ return;
+ }
+
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
+ if (has_granularity) {
+ if (granularity < 512 || !is_power_of_2(granularity)) {
+ error_setg(errp, "Granularity must be power of 2 "
+ "and at least 512");
+ goto out;
+ }
+ } else {
+ /* Default to cluster size, if available: */
+ granularity = bdrv_get_default_bitmap_granularity(bs);
}
+ bdrv_create_dirty_bitmap(bs, granularity, name, errp);
+
+ out:
+ aio_context_release(aio_context);
+}
+
+void qmp_block_dirty_bitmap_remove(const char *node, const char *name,
+ Error **errp)
+{
+ AioContext *aio_context;
+ BlockDriverState *bs;
+ BdrvDirtyBitmap *bitmap;
+
+ bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp);
+ if (!bitmap || !bs) {
+ return;
+ }
+
+ if (bdrv_dirty_bitmap_frozen(bitmap)) {
+ error_setg(errp,
+ "Bitmap '%s' is currently frozen and cannot be removed",
+ name);
+ goto out;
+ }
+ bdrv_dirty_bitmap_make_anon(bitmap);
+ bdrv_release_dirty_bitmap(bs, bitmap);
+
+ out:
+ aio_context_release(aio_context);
+}
+
+/**
+ * Completely clear a bitmap, for the purposes of synchronizing a bitmap
+ * immediately after a full backup operation.
+ */
+void qmp_block_dirty_bitmap_clear(const char *node, const char *name,
+ Error **errp)
+{
+ AioContext *aio_context;
+ BdrvDirtyBitmap *bitmap;
+ BlockDriverState *bs;
+
+ bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp);
+ if (!bitmap || !bs) {
+ return;
+ }
+
+ if (bdrv_dirty_bitmap_frozen(bitmap)) {
+ error_setg(errp,
+ "Bitmap '%s' is currently frozen and cannot be modified",
+ name);
+ goto out;
+ } else if (!bdrv_dirty_bitmap_enabled(bitmap)) {
+ error_setg(errp,
+ "Bitmap '%s' is currently disabled and cannot be cleared",
+ name);
+ goto out;
+ }
+
+ bdrv_clear_dirty_bitmap(bitmap);
+
+ out:
aio_context_release(aio_context);
}
-int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
+void hmp_drive_del(Monitor *mon, const QDict *qdict)
{
const char *id = qdict_get_str(qdict, "id");
BlockBackend *blk;
blk = blk_by_name(id);
if (!blk) {
error_report("Device '%s' not found", id);
- return -1;
+ return;
}
bs = blk_bs(blk);
if (!blk_legacy_dinfo(blk)) {
error_report("Deleting device added with blockdev-add"
" is not supported");
- return -1;
+ return;
}
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) {
- error_report("%s", error_get_pretty(local_err));
- error_free(local_err);
+ error_report_err(local_err);
aio_context_release(aio_context);
- return -1;
+ return;
}
- /* quiesce block driver; prevent further io */
- bdrv_drain_all();
- bdrv_flush(bs);
bdrv_close(bs);
/* if we have a device attached to this BlockDriverState
* then we can just get rid of the block driver state right here.
*/
if (blk_get_attached_dev(blk)) {
- blk_hide_on_behalf_of_do_drive_del(blk);
+ blk_hide_on_behalf_of_hmp_drive_del(blk);
/* Further I/O must not pause the guest */
bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT,
BLOCKDEV_ON_ERROR_REPORT);
}
aio_context_release(aio_context);
- return 0;
}
void qmp_block_resize(bool has_device, const char *device,
aio_context_acquire(aio_context);
if (!bdrv_is_first_non_filter(bs)) {
- error_set(errp, QERR_FEATURE_DISABLED, "resize");
+ error_setg(errp, QERR_FEATURE_DISABLED, "resize");
goto out;
}
if (size < 0) {
- error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size");
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size");
goto out;
}
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) {
- error_set(errp, QERR_DEVICE_IN_USE, device);
+ error_setg(errp, QERR_DEVICE_IN_USE, device);
goto out;
}
case 0:
break;
case -ENOMEDIUM:
- error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
+ error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
break;
case -ENOTSUP:
- error_set(errp, QERR_UNSUPPORTED);
+ error_setg(errp, QERR_UNSUPPORTED);
break;
case -EACCES:
- error_set(errp, QERR_DEVICE_IS_READ_ONLY, device);
+ error_setg(errp, "Device '%s' is read only", device);
break;
case -EBUSY:
- error_set(errp, QERR_DEVICE_IN_USE, device);
+ error_setg(errp, QERR_DEVICE_IN_USE, device);
break;
default:
error_setg_errno(errp, -ret, "Could not resize");
bool has_on_error, BlockdevOnError on_error,
Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs;
BlockDriverState *base_bs = NULL;
AioContext *aio_context;
on_error = BLOCKDEV_ON_ERROR_REPORT;
}
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
if (has_base) {
base_bs = bdrv_find_backing_image(bs, base);
if (base_bs == NULL) {
- error_set(errp, QERR_BASE_NOT_FOUND, base);
+ error_setg(errp, QERR_BASE_NOT_FOUND, base);
goto out;
}
assert(bdrv_get_aio_context(base_bs) == aio_context);
bool has_speed, int64_t speed,
Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs;
BlockDriverState *base_bs, *top_bs;
AioContext *aio_context;
* live commit feature versions; for this to work, we must make sure to
* perform the device lookup before any generic errors that may occur in a
* scenario in which all optional arguments are omitted. */
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
- /* drain all i/o before commits */
- bdrv_drain_all();
-
- if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT, errp)) {
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) {
goto out;
}
}
if (base_bs == NULL) {
- error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL");
+ error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL");
goto out;
}
assert(bdrv_get_aio_context(base_bs) == aio_context);
+ if (bdrv_op_is_blocked(base_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) {
+ goto out;
+ }
+
/* Do not allow attempts to commit an image into itself */
if (top_bs == base_bs) {
error_setg(errp, "cannot commit an image into itself");
enum MirrorSyncMode sync,
bool has_mode, enum NewImageMode mode,
bool has_speed, int64_t speed,
+ bool has_bitmap, const char *bitmap,
bool has_on_source_error, BlockdevOnError on_source_error,
bool has_on_target_error, BlockdevOnError on_target_error,
Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs;
BlockDriverState *target_bs;
BlockDriverState *source = NULL;
+ BdrvDirtyBitmap *bmap = NULL;
AioContext *aio_context;
BlockDriver *drv = NULL;
Error *local_err = NULL;
mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
}
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
+ /* Although backup_run has this check too, we need to use bs->drv below, so
+ * do an early check redundantly. */
if (!bdrv_is_inserted(bs)) {
- error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
+ error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
goto out;
}
if (format) {
drv = bdrv_find_format(format);
if (!drv) {
- error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
+ error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
goto out;
}
}
+ /* Early check to avoid creating target */
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) {
goto out;
}
bdrv_set_aio_context(target_bs, aio_context);
- backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error,
+ if (has_bitmap) {
+ bmap = bdrv_find_dirty_bitmap(bs, bitmap);
+ if (!bmap) {
+ error_setg(errp, "Bitmap '%s' could not be found", bitmap);
+ goto out;
+ }
+ }
+
+ backup_start(bs, target_bs, speed, sync, bmap,
+ on_source_error, on_target_error,
block_job_cb, bs, &local_err);
if (local_err != NULL) {
bdrv_unref(target_bs);
BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp)
{
- return bdrv_named_nodes_list();
+ return bdrv_named_nodes_list(errp);
}
-#define DEFAULT_MIRROR_BUF_SIZE (10 << 20)
+void qmp_blockdev_backup(const char *device, const char *target,
+ enum MirrorSyncMode sync,
+ bool has_speed, int64_t speed,
+ bool has_on_source_error,
+ BlockdevOnError on_source_error,
+ bool has_on_target_error,
+ BlockdevOnError on_target_error,
+ Error **errp)
+{
+ BlockBackend *blk;
+ BlockDriverState *bs;
+ BlockDriverState *target_bs;
+ Error *local_err = NULL;
+ AioContext *aio_context;
+
+ if (!has_speed) {
+ speed = 0;
+ }
+ if (!has_on_source_error) {
+ on_source_error = BLOCKDEV_ON_ERROR_REPORT;
+ }
+ if (!has_on_target_error) {
+ on_target_error = BLOCKDEV_ON_ERROR_REPORT;
+ }
+
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_setg(errp, "Device '%s' not found", device);
+ return;
+ }
+ bs = blk_bs(blk);
+
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
+ blk = blk_by_name(target);
+ if (!blk) {
+ error_setg(errp, "Device '%s' not found", target);
+ goto out;
+ }
+ target_bs = blk_bs(blk);
+
+ bdrv_ref(target_bs);
+ bdrv_set_aio_context(target_bs, aio_context);
+ backup_start(bs, target_bs, speed, sync, NULL, on_source_error,
+ on_target_error, block_job_cb, bs, &local_err);
+ if (local_err != NULL) {
+ bdrv_unref(target_bs);
+ error_propagate(errp, local_err);
+ }
+out:
+ aio_context_release(aio_context);
+}
void qmp_drive_mirror(const char *device, const char *target,
bool has_format, const char *format,
bool has_buf_size, int64_t buf_size,
bool has_on_source_error, BlockdevOnError on_source_error,
bool has_on_target_error, BlockdevOnError on_target_error,
+ bool has_unmap, bool unmap,
Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs;
BlockDriverState *source, *target_bs;
AioContext *aio_context;
granularity = 0;
}
if (!has_buf_size) {
- buf_size = DEFAULT_MIRROR_BUF_SIZE;
+ buf_size = 0;
+ }
+ if (!has_unmap) {
+ unmap = true;
}
if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) {
- error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity",
- "a value in range [512B, 64MB]");
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity",
+ "a value in range [512B, 64MB]");
return;
}
if (granularity & (granularity - 1)) {
- error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", "power of 2");
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity",
+ "power of 2");
return;
}
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
if (!bdrv_is_inserted(bs)) {
- error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
+ error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
goto out;
}
if (format) {
drv = bdrv_find_format(format);
if (!drv) {
- error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
+ error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
goto out;
}
}
has_replaces ? replaces : NULL,
speed, granularity, buf_size, sync,
on_source_error, on_target_error,
+ unmap,
block_job_cb, bs, &local_err);
if (local_err != NULL) {
bdrv_unref(target_bs);
}
/* Get the block job for a given device name and acquire its AioContext */
-static BlockJob *find_block_job(const char *device, AioContext **aio_context)
+static BlockJob *find_block_job(const char *device, AioContext **aio_context,
+ Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs;
- bs = bdrv_find(device);
- if (!bs) {
+ blk = blk_by_name(device);
+ if (!blk) {
goto notfound;
}
+ bs = blk_bs(blk);
*aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(*aio_context);
return bs->job;
notfound:
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE,
+ "No active block job on device '%s'", device);
*aio_context = NULL;
return NULL;
}
void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp)
{
AioContext *aio_context;
- BlockJob *job = find_block_job(device, &aio_context);
+ BlockJob *job = find_block_job(device, &aio_context, errp);
if (!job) {
- error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
return;
}
bool has_force, bool force, Error **errp)
{
AioContext *aio_context;
- BlockJob *job = find_block_job(device, &aio_context);
+ BlockJob *job = find_block_job(device, &aio_context, errp);
if (!job) {
- error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
return;
}
force = false;
}
- if (job->paused && !force) {
+ if (job->user_paused && !force) {
error_setg(errp, "The block job for device '%s' is currently paused",
device);
goto out;
void qmp_block_job_pause(const char *device, Error **errp)
{
AioContext *aio_context;
- BlockJob *job = find_block_job(device, &aio_context);
+ BlockJob *job = find_block_job(device, &aio_context, errp);
- if (!job) {
- error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
+ if (!job || job->user_paused) {
return;
}
+ job->user_paused = true;
trace_qmp_block_job_pause(job);
block_job_pause(job);
aio_context_release(aio_context);
void qmp_block_job_resume(const char *device, Error **errp)
{
AioContext *aio_context;
- BlockJob *job = find_block_job(device, &aio_context);
+ BlockJob *job = find_block_job(device, &aio_context, errp);
- if (!job) {
- error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
+ if (!job || !job->user_paused) {
return;
}
+ job->user_paused = false;
trace_qmp_block_job_resume(job);
block_job_resume(job);
aio_context_release(aio_context);
void qmp_block_job_complete(const char *device, Error **errp)
{
AioContext *aio_context;
- BlockJob *job = find_block_job(device, &aio_context);
+ BlockJob *job = find_block_job(device, &aio_context, errp);
if (!job) {
- error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
return;
}
const char *backing_file,
Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs = NULL;
+ AioContext *aio_context;
BlockDriverState *image_bs = NULL;
Error *local_err = NULL;
bool ro;
int open_flags;
int ret;
- /* find the top layer BDS of the chain */
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
return;
}
+ bs = blk_bs(blk);
+
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
- return;
+ goto out;
}
if (!image_bs) {
error_setg(errp, "image file not found");
- return;
+ goto out;
}
if (bdrv_find_base(image_bs) == image_bs) {
error_setg(errp, "not allowing backing file change on an image "
"without a backing file");
- return;
+ goto out;
}
/* even though we are not necessarily operating on bs, we need it to
* determine if block ops are currently prohibited on the chain */
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) {
- return;
+ goto out;
}
/* final sanity check */
if (!bdrv_chain_contains(bs, image_bs)) {
error_setg(errp, "'%s' and image file are not in the same chain",
device);
- return;
+ goto out;
}
/* if not r/w, reopen to make r/w */
bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err);
if (local_err) {
error_propagate(errp, local_err);
- return;
+ goto out;
}
}
error_propagate(errp, local_err); /* will preserve prior errp */
}
}
+
+out:
+ aio_context_release(aio_context);
}
void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
.type = QEMU_OPT_STRING,
.help = "discard operation (ignore/off, unmap/on)",
},{
- .name = "cache.writeback",
+ .name = BDRV_OPT_CACHE_WB,
.type = QEMU_OPT_BOOL,
.help = "enables writeback mode for any caches",
},{
- .name = "cache.direct",
+ .name = BDRV_OPT_CACHE_DIRECT,
.type = QEMU_OPT_BOOL,
.help = "enables use of O_DIRECT (bypass the host page cache)",
},{
- .name = "cache.no-flush",
+ .name = BDRV_OPT_CACHE_NO_FLUSH,
.type = QEMU_OPT_BOOL,
.help = "ignore any flush requests for the device",
},{
.type = QEMU_OPT_NUMBER,
.help = "when limiting by iops max size of an I/O in bytes",
},{
+ .name = "throttling.group",
+ .type = QEMU_OPT_STRING,
+ .help = "name of the block throttling group",
+ },{
.name = "copy-on-read",
.type = QEMU_OPT_BOOL,
.help = "copy read data from backing file into image file",
projects / sdk / emulator / qemu.git / blobdiff