@@ -1562,27 +1562,27 @@ static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp)
{
BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
BlockdevBackup *backup;
- BlockDriverState *bs, *target;
+ BlockBackend *blk, *target;
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) {
+ blk = blk_by_name(backup->device);
+ if (!blk) {
error_set(errp, QERR_DEVICE_NOT_FOUND, backup->device);
return;
}
- target = bdrv_find(backup->target);
+ target = blk_by_name(backup->target);
if (!target) {
error_set(errp, QERR_DEVICE_NOT_FOUND, backup->target);
return;
}
/* 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 = blk_get_aio_context(blk);
+ if (state->aio_context != blk_get_aio_context(target)) {
state->aio_context = NULL;
error_setg(errp, "Backup between two IO threads is not implemented");
return;
@@ -1600,7 +1600,10 @@ static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp)
return;
}
- state->bs = bs;
+ /* qmp_blockdev_backup() would have failed otherwise */
+ assert(blk_bs(blk));
+
+ state->bs = blk_bs(blk);
state->job = state->bs->job;
}
When preparing a blockdev-backup transaction, the BlockBackend should be used because there may be no medium associated to the BB (which would make bdrv_find() fail, whereas blk_by_name() does not). This does not make a real difference because blockdev-backup will fail without a medium anyway; however, it will have an impact on the error returned ("device not found" vs. "no medium"). Signed-off-by: Max Reitz <mreitz@redhat.com> --- blockdev.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-)