From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40082) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fYv7U-0001G3-Q1 for qemu-devel@nongnu.org; Fri, 29 Jun 2018 11:15:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fYv7R-0006Ay-IO for qemu-devel@nongnu.org; Fri, 29 Jun 2018 11:15:32 -0400 From: Vladimir Sementsov-Ogievskiy Date: Fri, 29 Jun 2018 18:15:22 +0300 Message-Id: <20180629151524.138542-2-vsementsov@virtuozzo.com> In-Reply-To: <20180629151524.138542-1-vsementsov@virtuozzo.com> References: <20180629151524.138542-1-vsementsov@virtuozzo.com> Subject: [Qemu-devel] [PATCH v2 1/3] blockdev-backup: enable non-root nodes for backup source List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, qemu-block@nongnu.org Cc: eblake@redhat.com, armbru@redhat.com, kwolf@redhat.com, mreitz@redhat.com, jsnow@redhat.com, famz@redhat.com, vsementsov@virtuozzo.com, den@openvz.org This is needed to implement image-fleecing scheme, when we create a temporary node, mark our active node to be backing for the temp, and start backup(sync=none) from active node to the temp node. Temp node then represents a kind of snapshot and may be used for external backup through NBD. Signed-off-by: Vladimir Sementsov-Ogievskiy --- blockdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/blockdev.c b/blockdev.c index 58d7570932..72f5347df5 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1859,7 +1859,7 @@ static void blockdev_backup_prepare(BlkActionState *common, Error **errp) assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); backup = common->action->u.blockdev_backup.data; - bs = qmp_get_root_bs(backup->device, errp); + bs = bdrv_lookup_bs(backup->device, backup->device, errp); if (!bs) { return; } @@ -3517,7 +3517,7 @@ BlockJob *do_blockdev_backup(BlockdevBackup *backup, JobTxn *txn, backup->compress = false; } - bs = qmp_get_root_bs(backup->device, errp); + bs = bdrv_lookup_bs(backup->device, backup->device, errp); if (!bs) { return NULL; } -- 2.11.1