path: root/qemu-img.texi
diff options
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 /qemu-img.texi
parenta58b8d5401b6064d52113f243456115d046bdd12 (diff)
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 'qemu-img.texi')
1 files changed, 2 insertions, 2 deletions
diff --git a/qemu-img.texi b/qemu-img.texi
index c1b1f2717e..1b90ddbcfc 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -77,9 +77,9 @@ it doesn't need to be specified separately in this case.
Commit the changes recorded in @var{filename} in its base image.
-@item convert [-c] [-f @var{fmt}] [-O @var{output_fmt}] [-o @var{options}] @var{filename} [@var{filename2} [...]] @var{output_filename}
+@item convert [-c] [-f @var{fmt}] [-O @var{output_fmt}] [-o @var{options}] [-s @var{snapshot_name}] @var{filename} [@var{filename2} [...]] @var{output_filename}
-Convert the disk image @var{filename} to disk image @var{output_filename}
+Convert the disk image @var{filename} or a snapshot @var{snapshot_name} to disk image @var{output_filename}
using format @var{output_fmt}. It can be optionally compressed (@code{-c}
option) or use any format specific options like encryption (@code{-o} option).