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[Qemu-devel] [PATCH v20 12/15] block: Allow backup on referenced named B
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [PATCH v20 12/15] block: Allow backup on referenced named BlockDriverState |
Date: |
Tue, 20 May 2014 14:04:37 +0800 |
Drive backup is a read only operation on source bs. We want to allow
this specific case to enable image-fleecing. Note that when
image-fleecing job starts, the job still add its blocker to source bs,
and any other operation on it will be blocked by that.
Signed-off-by: Fam Zheng <address@hidden>
---
block.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/block.c b/block.c
index e0d7984..2aebf45 100644
--- a/block.c
+++ b/block.c
@@ -1120,6 +1120,8 @@ void bdrv_set_backing_hd(BlockDriverState *bs,
BlockDriverState *backing_hd)
/* Otherwise we won't be able to commit due to check in bdrv_commit */
bdrv_op_unblock(bs->backing_hd, BLOCK_OP_TYPE_COMMIT,
bs->backing_blocker);
+ bdrv_op_unblock(bs->backing_hd, BLOCK_OP_TYPE_BACKUP_SOURCE,
+ bs->backing_blocker);
out:
bdrv_refresh_limits(bs);
}
--
1.9.2
- Re: [Qemu-devel] [PATCH v20 06/15] block: Add backing_blocker in BlockDriverState, (continued)
Re: [Qemu-devel] [PATCH v20 06/15] block: Add backing_blocker in BlockDriverState, Stefan Hajnoczi, 2014/05/21
[Qemu-devel] [PATCH v20 08/15] block: Support dropping active in bdrv_drop_intermediate, Fam Zheng, 2014/05/20
[Qemu-devel] [PATCH v20 09/15] stream: Use bdrv_drop_intermediate and drop close_unused_images, Fam Zheng, 2014/05/20
[Qemu-devel] [PATCH v20 10/15] commit: Use bdrv_drop_intermediate, Fam Zheng, 2014/05/20
[Qemu-devel] [PATCH v20 11/15] qmp: Add command 'blockdev-backup', Fam Zheng, 2014/05/20
[Qemu-devel] [PATCH v20 12/15] block: Allow backup on referenced named BlockDriverState,
Fam Zheng <=
[Qemu-devel] [PATCH v20 13/15] block: Add blockdev-backup to transaction, Fam Zheng, 2014/05/20
[Qemu-devel] [PATCH v20 14/15] qemu-iotests: Test blockdev-backup in 055, Fam Zheng, 2014/05/20
[Qemu-devel] [PATCH v20 15/15] qemu-iotests: Image fleecing test case 089, Fam Zheng, 2014/05/20