From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55999) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WBhbt-0001GM-0g for qemu-devel@nongnu.org; Fri, 07 Feb 2014 04:20:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WBhbo-0008Dc-MJ for qemu-devel@nongnu.org; Fri, 07 Feb 2014 04:20:32 -0500 Received: from mail-ph.de-nserver.de ([85.158.179.214]:39837) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WBhbo-0008DX-Ac for qemu-devel@nongnu.org; Fri, 07 Feb 2014 04:20:28 -0500 Message-ID: <52F4A554.1080400@profihost.ag> Date: Fri, 07 Feb 2014 10:20:20 +0100 From: Stefan Priebe - Profihost AG MIME-Version: 1.0 References: <50562927-0498-460b-8f29-98722e332149@mailpro> <52F496B4.5030505@profihost.ag> <20140207091513.GC2374@work-vm> In-Reply-To: <20140207091513.GC2374@work-vm> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit 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: "Dr. David Alan Gilbert" Cc: qemu-devel , Alexandre DERUMIER Am 07.02.2014 10:15, schrieb Dr. David Alan Gilbert: > * Stefan Priebe - Profihost AG (s.priebe@profihost.ag) wrote: >> Am 07.02.2014 09:15, schrieb Alexandre DERUMIER: >>> >>> do you use xbzrle for live migration ? >> >> no - i'm really stucked right now with this. Biggest problem i can't >> reproduce with test machines ;-( > > Only being able to test on your production VMs isn't fun; > is it possible or you to run an extra program on these VMs - e.g. > if we came up with a simple (userland) memory test? You mean to reproduce? I already tried https://code.google.com/p/stressapptest/ while migrating on a test VM but this works fine. I also tried running mysql bench while migrating on a test vm and this works too ;-( Stefan > Dave > >> >> Stefan >> >> >>> >>> ----- Mail original ----- >>> >>> De: "Stefan Priebe" >>> À: "Dr. David Alan Gilbert" >>> Cc: "Alexandre DERUMIER" , "qemu-devel" >>> Envoyé: Jeudi 6 Février 2014 21:00:27 >>> Objet: Re: [Qemu-devel] [pve-devel] QEMU LIve Migration - swap_free: Bad swap file entry >>> >>> Hi, >>> Am 06.02.2014 20:51, schrieb Dr. David Alan Gilbert: >>>> * Stefan Priebe - Profihost AG (s.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] >>>> >>>> OK, so lets just assume some part of memory (or CPU state, or memory >>>> loaded off disk...) >>>> >>>> You said before that it was happening on a 32GB image - is it *only* >>>> happening on a 32GB or bigger VM, or is it just more likely? >>> >>> Not image, memory. I've only seen this with vms having more than 16GB or >>> 32GB memory. But maybe this also indicates that just the migration takes >>> longer. >>> >>>> I think you also said you were using 1.7; have you tried an older >>>> version - i.e. is this a regression in 1.7 or don't we know? >>> Don't know. Sadly i cannot reproduce this with test VMs only with >>> production ones. >>> >>> Stefan >>> >>>> Dave >>>> -- >>>> Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK >>>> >> > -- > Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK >