path: root/qemu-img.texi
diff options
authorKevin Wolf <kwolf@redhat.com>2012-05-11 16:07:02 +0200
committerKevin Wolf <kwolf@redhat.com>2012-06-15 14:03:42 +0200
commit4534ff5426afeeae5238ba10a696cafa9a0168ee (patch)
tree41cfe59d3c5b41f0e5d6c396a1c9563a2c21deab /qemu-img.texi
parentdfc65f1f780622d852ca8b9fb1421735ee56c48b (diff)
qemu-img check -r for repairing images
The QED block driver already provides the functionality to not only detect inconsistencies in images, but also fix them. However, this functionality cannot be manually invoked with qemu-img, but the check happens only automatically during bdrv_open(). This adds a -r switch to qemu-img check that allows manual invocation of an image repair. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-img.texi')
1 files changed, 6 insertions, 1 deletions
diff --git a/qemu-img.texi b/qemu-img.texi
index 6fc3c28e0d..5a7b2bb1f2 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -70,10 +70,15 @@ lists all snapshots in the given image
Command description:
@table @option
-@item check [-f @var{fmt}] @var{filename}
+@item check [-f @var{fmt}] [-r [leaks | all]] @var{filename}
Perform a consistency check on the disk image @var{filename}.
+If @code{-r} is specified, qemu-img tries to repair any inconsistencies found
+during the check. @code{-r leaks} repairs only cluster leaks, whereas
+@code{-r all} fixes all kinds of errors, with a higher risk of choosing the
+wrong fix or hiding corruption that has already occured.
Only the formats @code{qcow2}, @code{qed} and @code{vdi} support
consistency checks.