From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:36133) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R8Dn1-0003wl-2c for qemu-devel@nongnu.org; Mon, 26 Sep 2011 12:12:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R8Dmu-00051n-Ph for qemu-devel@nongnu.org; Mon, 26 Sep 2011 12:12:19 -0400 Received: from goliath.siemens.de ([192.35.17.28]:20861) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R8Dmu-00051Q-Fw for qemu-devel@nongnu.org; Mon, 26 Sep 2011 12:12:12 -0400 Message-ID: <4E80A459.3030607@siemens.com> Date: Mon, 26 Sep 2011 18:12:09 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <4E802979.9060707@siemens.com> <4E802EB5.3000800@redhat.com> <4E804496.6040305@siemens.com> <4E804AB0.9040307@redhat.com> <4E805360.20609@siemens.com> <4E809603.4000100@siemens.com> <4E8098BB.4060103@redhat.com> In-Reply-To: <4E8098BB.4060103@redhat.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] scsi: lsi problems since "unit attention on reset" List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: qemu-devel On 2011-09-26 17:22, Paolo Bonzini wrote: > On 09/26/2011 05:10 PM, Jan Kiszka wrote: >> And you were right: it turned out to be a driver issue. The bug sneaked >> in while adapting the original driver to some specific differences >> between QEMU and real HW (here: lacking compat bit support). > > Cool, then we can leave in the patch I think. I originally did it in > hope of detecting possible bugs with (upcoming) migration support, which > will use unit attention to make the guest requeue all requests on the > destination. It looks like my goal has been attained. At least for this user. > > Out of curiosity, have you ever looked into (or are you interested into) > using multiple LUNs per target with the LSI driver? It crashes > miserably for me with a page fault in the Linux ISR, and that's when I > started using another device. :) "Unfortunately", I haven't been confronted with such a requirement so far. :) Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux