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) {
+ blk = blk_by_name(device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return NULL;
}
+ bs = blk_bs(blk);
if (!has_id) {
id = NULL;
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 atomic group operations */
typedef struct BlkTransactionState BlkTransactionState;
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) {
+ blk = blk_by_name(device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return;
}
+ bs = blk_bs(blk);
/* AioContext is released in .clean() */
state->aio_context = bdrv_get_aio_context(bs);
}
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;
}
{
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;
- bs = bdrv_find(backup->device);
- if (!bs) {
+ blk = blk_by_name(backup->device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, backup->device);
return;
}
+ bs = blk_bs(blk);
/* AioContext is released in .clean() */
state->aio_context = bdrv_get_aio_context(bs);
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);
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;
- bs = bdrv_find(backup->device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, backup->device);
+ blk = blk_by_name(backup->device);
+ if (!blk) {
+ error_setg(errp, "Device '%s' not found", backup->device);
return;
}
+ bs = blk_bs(blk);
- target = bdrv_find(backup->target);
- if (!target) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, backup->target);
+ 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);
{
ThrottleConfig cfg;
BlockDriverState *bs;
+ BlockBackend *blk;
AioContext *aio_context;
- bs = bdrv_find(device);
- if (!bs) {
+ blk = blk_by_name(device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return;
}
+ bs = blk_bs(blk);
memset(&cfg, 0, sizeof(cfg));
cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps;
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 hmp_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
{
const char *id = qdict_get_str(qdict, "id");
error_set(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);
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) {
+ blk = blk_by_name(device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(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) {
+ blk = blk_by_name(device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
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) {
+ blk = blk_by_name(device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
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);
}
void qmp_blockdev_backup(const char *device, const char *target,
BlockdevOnError on_target_error,
Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs;
BlockDriverState *target_bs;
Error *local_err = NULL;
on_target_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_setg(errp, "Device '%s' not found", device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
- target_bs = bdrv_find(target);
- if (!target_bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, target);
+ 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, on_source_error, on_target_error,
- block_job_cb, bs, &local_err);
+ 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);
bool has_on_target_error, BlockdevOnError on_target_error,
Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs;
BlockDriverState *source, *target_bs;
AioContext *aio_context;
return;
}
- bs = bdrv_find(device);
- if (!bs) {
+ blk = blk_by_name(device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(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);
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;
AioContext *aio_context;
BlockJob *job = find_block_job(device, &aio_context, errp);
- if (!job) {
+ 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);
AioContext *aio_context;
BlockJob *job = find_block_job(device, &aio_context, errp);
- if (!job) {
+ 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);
const char *backing_file,
Error **errp)
{
+ BlockBackend *blk;
BlockDriverState *bs = NULL;
AioContext *aio_context;
BlockDriverState *image_bs = NULL;
int open_flags;
int ret;
- /* find the top layer BDS of the chain */
- bs = bdrv_find(device);
- if (!bs) {
+ blk = blk_by_name(device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return;
}
+ bs = blk_bs(blk);
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
projects / qemu.git / blobdiff