From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53966) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aquQg-00041n-CH for qemu-devel@nongnu.org; Thu, 14 Apr 2016 23:28:23 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aquQf-000329-Ek for qemu-devel@nongnu.org; Thu, 14 Apr 2016 23:28:22 -0400 From: Fam Zheng Date: Fri, 15 Apr 2016 11:27:53 +0800 Message-Id: <1460690887-32751-4-git-send-email-famz@redhat.com> In-Reply-To: <1460690887-32751-1-git-send-email-famz@redhat.com> References: <1460690887-32751-1-git-send-email-famz@redhat.com> Subject: [Qemu-devel] [PATCH for-2.7 v2 03/17] blockdev: Add and parse "lock-image" option for block devices List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Max Reitz , Jeff Cody , Markus Armbruster , Eric Blake , John Snow , qemu-block@nongnu.org, berrange@redhat.com, pbonzini@redhat.com, den@openvz.org Honor the locking switch specified in CLI or QMP, and set the open flags for the image accordingly. Signed-off-by: Fam Zheng --- blockdev.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/blockdev.c b/blockdev.c index f1f520a..93bd43e 100644 --- a/blockdev.c +++ b/blockdev.c @@ -382,6 +382,10 @@ static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, return; } } + + if (!qemu_opt_get_bool(opts, "lock-image", false)) { + *bdrv_flags |= BDRV_O_NO_LOCK; + } } /* disk I/O throttling */ @@ -4249,6 +4253,10 @@ QemuOptsList qemu_common_drive_opts = { .type = QEMU_OPT_BOOL, .help = "whether to account for failed I/O operations " "in the statistics", + },{ + .name = "lock-image", + .type = QEMU_OPT_BOOL, + .help = "whether to lock the image (default: on)", }, { /* end of list */ } }, -- 2.8.0