From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57034) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WBPgz-0007oU-FJ for qemu-devel@nongnu.org; Thu, 06 Feb 2014 09:12:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WBPgs-0007JK-6F for qemu-devel@nongnu.org; Thu, 06 Feb 2014 09:12:37 -0500 Received: from mx.beyond.pl ([92.43.117.49]:54315) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WBPgs-0007J5-0W for qemu-devel@nongnu.org; Thu, 06 Feb 2014 09:12:30 -0500 Received: from localhost (localhost [127.0.0.1]) by mx.beyond.pl (Postfix) with ESMTP id 90EF92037 for ; Thu, 6 Feb 2014 15:12:27 +0100 (CET) Received: from mx.beyond.pl ([127.0.0.1]) by localhost (mw.beyond.pl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id AMbR9PBSG86b for ; Thu, 6 Feb 2014 15:12:27 +0100 (CET) Received: from [10.113.190.133] (ip-91-102-114-166.beyond.pl [91.102.114.166]) (Authenticated sender: m.gibula@beyond.pl) by mx.beyond.pl (Postfix) with ESMTPSA id 1A959200C for ; Thu, 6 Feb 2014 15:12:27 +0100 (CET) Message-ID: <52F39847.7050402@beyond.pl> Date: Thu, 06 Feb 2014 15:12:23 +0100 From: =?UTF-8?B?TWFyY2luIEdpYnXFgmE=?= MIME-Version: 1.0 References: <80ddf64b-2a0a-40c6-ae63-a5ce3f68991f@mailpro> <52F37BBF.7060203@profihost.ag> <52F3961C.3000807@profihost.ag> In-Reply-To: <52F3961C.3000807@profihost.ag> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [pve-devel] QEMU LIve Migration - swap_free: Bad swap file entry List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org On 06.02.2014 15:03, Stefan Priebe - Profihost AG wrote: > some more things which happen during migration: > > php5.2[20258]: segfault at a0 ip 0000000000740656 sp 00007fff53b694a0 > error 4 in php-cgi[400000+6d7000] > > php5.2[20249]: segfault at c ip 00007f1fb8ecb2b8 sp 00007fff642d9c20 > error 4 in ZendOptimizer.so[7f1fb8e71000+147000] > > cron[3154]: segfault at 7f0008a70ed4 ip 00007fc890b9d440 sp > 00007fff08a6f9b0 error 4 in libc-2.13.so[7fc890b67000+182000] Hi, I've seen memory corruptions after live (and offline) migrations as well. But in our enviroment its mostly (but not only) seen as timer corruption - guest hangs or have insane date in future. But I've seen segfaults and oopses as well. Sadly it's very hard for me to reproduce it reliably but it occures on all types of linux guests - all versions of ubuntu, centos, debian, etc, so it doesn't seem to be connected to a specific guest kernel version. I've never seen windows crashing though. There was another guy here on qemu-devel who had similar issue and fixed it by running guest with no-kvmclock. I've tested qemu 1.4 - 1.6 and kernels 3.4 - 3.10. -- mg