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qemu-img: Specify backing file for commit

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Introduce a new parameter for qemu-img commit which may be used to
explicitly specify the backing file into which an image should be
committed if the backing chain has more than a single layer.

[Applied Eric Blake's qemu-img.texi documentation rewording
--Stefan]

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1414159063-25977-12-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Max Reitz
2014-10-24 15:57:40 +02:00
committed by Stefan Hajnoczi
parent 687fa1d830
commit 1b22bffd82
3 changed files with 36 additions and 12 deletions
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4
qemu-img-cmds.hx
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@@ -22,9 +22,9 @@ STEXI
ETEXI
DEF("commit", img_commit,
"commit [-q] [-f fmt] [-t cache] [-d] [-p] filename")
"commit [-q] [-f fmt] [-t cache] [-b base] [-d] [-p] filename")
STEXI
@item commit [-q] [-f @var{fmt}] [-t @var{cache}] [-d] [-p] @var{filename}
@item commit [-q] [-f @var{fmt}] [-t @var{cache}] [-b @var{base}] [-d] [-p] @var{filename}
ETEXI
DEF("compare", img_compare,