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authorStefan Hajnoczi <stefanha@linux.vnet.ibm.com>2010-04-24 09:12:12 +0100
committerKevin Wolf <kwolf@redhat.com>2010-05-03 10:07:32 +0200
commitae6b0ed6d4d4a41e77584f44d2888303645fa845 (patch)
treeb3a9d851a0a738db40e4e91137cf5a0c91bdff78 /qemu-img.texi
parent51762288b41f59d027073c404a29256fc4d4540e (diff)
downloadqemu-arm-ae6b0ed6d4d4a41e77584f44d2888303645fa845.tar.gz
qemu-img: Add 'resize' command to grow/shrink disk images
This patch adds a 'resize' command to grow/shrink disk images. This allows changing the size of disk images without copying to a new image file. Currently only raw files support resize. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-img.texi')
-rw-r--r--qemu-img.texi12
1 files changed, 12 insertions, 0 deletions
diff --git a/qemu-img.texi b/qemu-img.texi
index ac978542c2..c1b1f2717e 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -106,6 +106,18 @@ they are displayed too.
@item snapshot [-l | -a @var{snapshot} | -c @var{snapshot} | -d @var{snapshot} ] @var{filename}
List, apply, create or delete snapshots in image @var{filename}.
+
+@item resize @var{filename} [+ | -]@var{size}
+
+Change the disk image as if it had been created with @var{size}.
+
+Before using this command to shrink a disk image, you MUST use file system and
+partitioning tools inside the VM to reduce allocated file systems and partition
+sizes accordingly. Failure to do so will result in data loss!
+
+After using this command to grow a disk image, you must use file system and
+partitioning tools inside the VM to actually begin using the new space on the
+device.
@end table
Supported image file formats: