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authoredison <edison@cloud.com>2010-09-21 19:58:41 -0700
committerKevin Wolf <kwolf@redhat.com>2010-10-22 14:49:35 +0200
commit51ef67270b1d10e1fcf3de7368dccad1ba0bf9d1 (patch)
treea06b3ce03bae7ed77a1e1e9bebc6ead157c7a4e5 /block/qcow2.c
parenta58b8d5401b6064d52113f243456115d046bdd12 (diff)
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Copy snapshots out of QCOW2 disk
In order to backup snapshots, created from QCOW2 iamge, we want to copy snapshots out of QCOW2 disk to a seperate storage. The following patch adds a new option in "qemu-img": qemu-img convert -f qcow2 -O qcow2 -s snapshot_name src_img bck_img. Right now, it only supports to copy the full snapshot, delta snapshot is on the way. Changes from V1: all the comments from Kevin are addressed: Add read-only checking Fix coding style Change the name from bdrv_snapshot_load to bdrv_snapshot_load_tmp Signed-off-by: Disheng Su <edison@cloud.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/qcow2.c')
-rw-r--r--block/qcow2.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c
index 45ed073..b816d87 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1286,6 +1286,7 @@ static BlockDriver bdrv_qcow2 = {
.bdrv_snapshot_goto = qcow2_snapshot_goto,
.bdrv_snapshot_delete = qcow2_snapshot_delete,
.bdrv_snapshot_list = qcow2_snapshot_list,
+ .bdrv_snapshot_load_tmp = qcow2_snapshot_load_tmp,
.bdrv_get_info = qcow_get_info,
.bdrv_save_vmstate = qcow_save_vmstate,