From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nolan Subject: Re: I/O errors after migration - why? Date: Sat, 28 Mar 2009 01:08:07 +0000 (UTC) Message-ID: References: <49CD0014.5020503@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from main.gmane.org ([80.91.229.2]:33265 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753075AbZC1BKH (ORCPT ); Fri, 27 Mar 2009 21:10:07 -0400 Received: from root by ciao.gmane.org with local (Exim 4.43) id 1LnN3i-0001N6-Q6 for kvm@vger.kernel.org; Sat, 28 Mar 2009 01:10:03 +0000 Received: from c-71-202-202-194.hsd1.ca.comcast.net ([71.202.202.194]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 28 Mar 2009 01:10:02 +0000 Received: from nolan by c-71-202-202-194.hsd1.ca.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 28 Mar 2009 01:10:02 +0000 Sender: kvm-owner@vger.kernel.org List-ID: Tomasz Chmielewski wpkg.org> writes: > I'm trying to perform live migration by following the instructions on > http://www.linux-kvm.org/page/Migration. > Unfortunately, it doesn't work very well - guest is migrated, but looses > access to its disk. The LSI logic scsi device model doesn't implement device state save/restore. Any suspend/resume, snapshot or migration will fail. I sent a patch that partially addresses this (but is buggy in the presence of in-flight IO): http://lists.gnu.org/archive/html/qemu-devel/2009-01/msg00744.html