From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54943) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VnmH1-0004ja-VU for qemu-devel@nongnu.org; Tue, 03 Dec 2013 04:28:13 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VnmGw-0003Hl-0t for qemu-devel@nongnu.org; Tue, 03 Dec 2013 04:28:07 -0500 Received: from mx1.redhat.com ([209.132.183.28]:19705) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VnmGv-0003Hf-Ot for qemu-devel@nongnu.org; Tue, 03 Dec 2013 04:28:01 -0500 Date: Tue, 3 Dec 2013 10:28:01 +0100 From: Kevin Wolf Message-ID: <20131203092801.GC9956@dhcp-200-207.str.redhat.com> References: <1385430206-26900-1-git-send-email-famz@redhat.com> <1385430206-26900-4-git-send-email-famz@redhat.com> <529D74AC.5060008@linux.vnet.ibm.com> <529D948B.3030605@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <529D948B.3030605@redhat.com> Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [PATCH v4 3/6] qemu-iotests: Add _default_cache_mode and _supported_cache_modes List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Fam Zheng Cc: Wenchao Xia , stefanha@redhat.com, qemu-devel@nongnu.org Am 03.12.2013 um 09:21 hat Fam Zheng geschrieben: > On 2013=E5=B9=B412=E6=9C=8803=E6=97=A5 14:05, Wenchao Xia wrote: >=20 > >=20 > > Why forbid mode =3D writeback? > >=20 >=20 > These test cases used to run with only possibly "writethrough", or "non= e". > And they don't work with writeback, at least in my case. So I didn't ad= d > other modes here. I suspect that the tests allowing writethrough might also work with directsync. Did you give that one a try? 026 has different output for wt and wb modes, this is why writeback fails. It should probably check against 026.out.nocache (which would have to be renamed as 026.out.wb) instead of 026.out. That's something for a separate series, though. Kevin