From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58281) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZjUDA-0007iL-LF for qemu-devel@nongnu.org; Tue, 06 Oct 2015 11:31:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZjUD6-0005xG-Sb for qemu-devel@nongnu.org; Tue, 06 Oct 2015 11:31:28 -0400 Date: Tue, 6 Oct 2015 17:31:17 +0200 From: Kevin Wolf Message-ID: <20151006153117.GE24770@noname.str.redhat.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Qemu-devel] [PATCH v6 2/4] block: support passing 'backing': '' to 'blockdev-add' List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alberto Garcia Cc: Stefan Hajnoczi , qemu-devel@nongnu.org, qemu-block@nongnu.org, Max Reitz Am 22.09.2015 um 15:28 hat Alberto Garcia geschrieben: > Passing an empty string allows opening an image but not its backing > file. This was already described in the API documentation, only the > implementation was missing. > > This is useful for creating snapshots using images opened with > blockdev-add, since they are not supposed to have a backing image > before the operation. > > Signed-off-by: Alberto Garcia > Reviewed-by: Max Reitz > Reviewed-by: Eric Blake Reviewed-by: Kevin Wolf