From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1O93Zm-0005Y6-4v for qemu-devel@nongnu.org; Mon, 03 May 2010 17:53:18 -0400 Received: from [140.186.70.92] (port=50117 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O93Zg-0005Uo-Qz for qemu-devel@nongnu.org; Mon, 03 May 2010 17:53:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1O93Zd-0001CV-Ao for qemu-devel@nongnu.org; Mon, 03 May 2010 17:53:12 -0400 Received: from zion.dlh.net ([91.198.192.1]:44379 helo=mail.dlh.net) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1O93Zd-0001CD-4n for qemu-devel@nongnu.org; Mon, 03 May 2010 17:53:09 -0400 Message-ID: <4BDF3F94.1080608@dlh.net> Date: Mon, 03 May 2010 23:26:44 +0200 From: Peter Lieven MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Qemu-KVM 0.12.3 and Multipath -> Assertion List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: kvm@vger.kernel.org, qemu-devel@nongnu.org Hi Qemu/KVM Devel Team, i'm using qemu-kvm 0.12.3 with latest Kernel 2.6.33.3. As backend we use open-iSCSI with dm-multipath. Multipath is configured to queue i/o if no path is available. If we create a failure on all paths, qemu starts to consume 100% CPU due to i/o waits which is ok so far. 1 odd thing: The Monitor Interface is not responding any more ... What es a really blocker is that KVM crashes with: kvm: /usr/src/qemu-kvm-0.12.3/hw/ide/internal.h:507: bmdma_active_if: Assertion `bmdma->unit != (uint8_t)-1' failed. after the multipath has reestablisched at least one path. Any ideas? I remember this was working with earlier kernel/kvm/qemu versions. Thanks, Peter