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[Qemu-devel] [PATCH v6 10/10] block: Allow backup on referenced named Bl
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [PATCH v6 10/10] block: Allow backup on referenced named BlockDriverState |
Date: |
Thu, 28 Nov 2013 16:39:42 +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 25ef5c8..68bf72c 100644
--- a/block.c
+++ b/block.c
@@ -1036,6 +1036,8 @@ int bdrv_open_backing_file(BlockDriverState *bs, const
char *backing_bs,
/* 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),
--
1.8.4.2
- [Qemu-devel] [PATCH v6 00/10] Drop in_use from BlockDriverState and enable point-in-time snapshot exporting over NBD, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 01/10] qapi: Add BlockOperationType enum, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 02/10] block: Introduce op_blockers to BlockDriverState, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 03/10] block: Parse "backing" option to reference existing BDS, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 04/10] block: support dropping active in bdrv_drop_intermediate, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 05/10] stream: Use bdrv_drop_intermediate and drop close_unused_images, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 06/10] block: Replace in_use with operation blocker, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 07/10] block: Pass error in bdrv_snapshot_create, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 08/10] block: Add checks of blocker in block operations, Fam Zheng, 2013/11/28
- [Qemu-devel] [PATCH v6 10/10] block: Allow backup on referenced named BlockDriverState,
Fam Zheng <=
- [Qemu-devel] [PATCH v6 09/10] qmp: add command 'blockdev-backup', Fam Zheng, 2013/11/28