From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56670) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eMrno-00026c-N6 for qemu-devel@nongnu.org; Thu, 07 Dec 2017 03:45:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eMrnj-0001sK-31 for qemu-devel@nongnu.org; Thu, 07 Dec 2017 03:45:08 -0500 From: Fam Zheng Date: Thu, 7 Dec 2017 16:44:53 +0800 Message-Id: <20171207084453.23773-1-famz@redhat.com> Subject: [Qemu-devel] [PATCH] qemu-img: Document --force-share / -U List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Max Reitz , qemu-block@nongnu.org Signed-off-by: Fam Zheng --- qemu-img.texi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/qemu-img.texi b/qemu-img.texi index fdcf120f36..3aa63aad55 100644 --- a/qemu-img.texi +++ b/qemu-img.texi @@ -57,6 +57,14 @@ 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, qemu-img will open the image with shared permissions, which makes +it less likely to conflict with a running guest's permissions due to image +locking. 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 result because of concurrent metadata changes, etc.. + @item fmt is the disk image format. It is guessed automatically in most cases. See below for a description of the supported disk formats. -- 2.14.3