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[Qemu-devel] [PATCH v12 11/11] block: Allow backup on referenced named B
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [PATCH v12 11/11] block: Allow backup on referenced named BlockDriverState |
Date: |
Mon, 27 Jan 2014 11:48:17 +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 e51ead3..1e50f1e 100644
--- a/block.c
+++ b/block.c
@@ -1102,6 +1102,8 @@ 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);
pstrcpy(bs->backing_file, sizeof(bs->backing_file),
bs->backing_hd->file->filename);
pstrcpy(bs->backing_format, sizeof(bs->backing_format),
--
1.8.5.3
- [Qemu-devel] [PATCH v12 02/11] block: Introduce op_blockers to BlockDriverState, (continued)
- [Qemu-devel] [PATCH v12 02/11] block: Introduce op_blockers to BlockDriverState, Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 03/11] block: Replace in_use with operation blocker, Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 04/11] block: Move op_blocker check from block_job_create to its caller, Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 05/11] block: Add bdrv_set_backing_hd(), Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 06/11] block: Add backing_blocker in BlockDriverState, Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 07/11] block: Parse "backing" option to reference existing BDS, Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 08/11] block: Support dropping active in bdrv_drop_intermediate, Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 09/11] stream: Use bdrv_drop_intermediate and drop close_unused_images, Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 10/11] qmp: Add command 'blockdev-backup', Fam Zheng, 2014/01/26
- [Qemu-devel] [PATCH v12 11/11] block: Allow backup on referenced named BlockDriverState,
Fam Zheng <=
- Re: [Qemu-devel] [PATCH v12 00/11] Drop in_use from BlockDriverState and enable point-in-time snapshot exporting over NBD, Stefan Hajnoczi, 2014/01/28
- Re: [Qemu-devel] [PATCH v12 00/11] Drop in_use from BlockDriverState and enable point-in-time snapshot exporting over NBD, Fam Zheng, 2014/01/28
- Re: [Qemu-devel] [PATCH v12 00/11] Drop in_use from BlockDriverState and enable point-in-time snapshot exporting over NBD, Stefan Hajnoczi, 2014/01/28