Commit a7e326df authored by Fam Zheng's avatar Fam Zheng Committed by Kevin Wolf

qemu-img: Document --force-share / -U

Signed-off-by: 's avatarFam Zheng <>
Reviewed-by: 's avatarStefan Hajnoczi <>
Reviewed-by: 's avatarKashyap Chamarthy <>
Signed-off-by: 's avatarKevin Wolf <>
parent c150eb92
......@@ -86,6 +86,14 @@ exclusive with the @var{-O} parameters. It is currently required to also use
the @var{-n} parameter to skip image creation. This restriction may be relaxed
in a future release.
@item --force-share (-U)
If specified, @code{qemu-img} will open the image in shared mode, allowing
other QEMU processes to open it in write mode. For example, this can be used to
get the image information (with 'info' subcommand) when the image is used by a
running guest. Note that this could produce inconsistent results because of
concurrent metadata changes, etc. This option is only allowed when opening
images in read-only mode.
@item --backing-chain
will enumerate information about backing files in a disk image chain. Refer
below for further description.
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