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[Qemu-devel] [PATCH v8 12/12] block: Allow backup on referenced named Bl
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [PATCH v8 12/12] block: Allow backup on referenced named BlockDriverState |
Date: |
Fri, 13 Dec 2013 15:35:20 +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 e5e7b0b..2496e7d 100644
--- a/block.c
+++ b/block.c
@@ -980,6 +980,8 @@ 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),
--
1.8.5.1
- [Qemu-devel] [PATCH v8 00/12] Drop in_use from BlockDriverState and enable point-in-time snapshot exporting over NBD, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 01/12] blkdebug: Use QLIST_FOREACH_SAFE to resume IO, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 04/12] block: Replace in_use with operation blocker, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 05/12] block: Move op_blocker check from block_job_create to its caller, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 02/12] qapi: Add BlockOperationType enum, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 06/12] block: Add bdrv_set_backing_hd(), Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 08/12] block: Parse "backing" option to reference existing BDS, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 12/12] block: Allow backup on referenced named BlockDriverState,
Fam Zheng <=
- [Qemu-devel] [PATCH v8 03/12] block: Introduce op_blockers to BlockDriverState, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 10/12] stream: Use bdrv_drop_intermediate and drop close_unused_images, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 11/12] qmp: Add command 'blockdev-backup', Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 09/12] block: Support dropping active in bdrv_drop_intermediate, Fam Zheng, 2013/12/13
- [Qemu-devel] [PATCH v8 07/12] block: Add backing_blocker in BlockDriverState, Fam Zheng, 2013/12/13