From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49583) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aiZYR-0006OC-Vv for qemu-devel@nongnu.org; Tue, 22 Mar 2016 23:33:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aiZYQ-0003Ze-TV for qemu-devel@nongnu.org; Tue, 22 Mar 2016 23:33:55 -0400 From: Jeff Cody Date: Tue, 22 Mar 2016 23:33:39 -0400 Message-Id: In-Reply-To: References: In-Reply-To: References: Subject: [Qemu-devel] [PATCH for-2.6 2/7] vpc: use current_size field for XenServer VHD images List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, grantwwu@gmail.com, qemu-devel@nongnu.org, stefanha@redhat.com, sbaugh@catern.com From: Stefan Hajnoczi The vpc driver has two methods of determining virtual disk size. The correct one to use depends on the software that generated the image file. Add the XenServer creator_app signature so that image size is correctly detected for those images. Reported-by: Grant Wu Reported-by: Spencer Baugh Signed-off-by: Stefan Hajnoczi Signed-off-by: Jeff Cody --- block/vpc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/block/vpc.c b/block/vpc.c index bc3d1c6..8b8b9a7 100644 --- a/block/vpc.c +++ b/block/vpc.c @@ -298,6 +298,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags, * 'qem2' : current_size QEMU (uses current_size) * 'win ' : current_size Hyper-V * 'd2v ' : current_size Disk2vhd + * 'tap\0' : current_size XenServer * * The user can override the table values via drive options, however * even with an override we will still use current_size for images @@ -305,7 +306,8 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags, */ use_chs = (!!strncmp(footer->creator_app, "win ", 4) && !!strncmp(footer->creator_app, "qem2", 4) && - !!strncmp(footer->creator_app, "d2v ", 4)) || s->force_use_chs; + !!strncmp(footer->creator_app, "d2v ", 4) && + !!memcmp(footer->creator_app, "tap", 4)) || s->force_use_chs; if (!use_chs || bs->total_sectors == VHD_MAX_GEOMETRY || s->force_use_sz) { bs->total_sectors = be64_to_cpu(footer->current_size) / -- 1.9.3