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From: Sylvain Bauza <sylvain.bauza@digimind.com>
To: kvm@vger.kernel.org
Subject: Win2003 disk corruption with kvm-1.0. and virtio
Date: Tue, 12 Feb 2013 15:30:37 +0100	[thread overview]
Message-ID: <511A520D.4@digimind.com> (raw)

Hi,

We currently run Openstack Essex hosts with KVM-1.0 (Ubuntu 12.04) 
instances with qcow2,virtio,cache=none

For Linux VMs, no trouble at all but we do observe filesystem corruption 
and inconsistency (missing DLLs, CHKDSK asked by EventViewer, failure at 
reboot) with some of our Windows 2003 SP2 64b images.

At first boot, stress tests (CrystalDiskMark 3.0.2 and intensive CHKDSK) 
don't show up problems. It is only appearing 6 or 12h later.

Do you have any idea on how to prevent it ? Is cache=writethrough an 
acceptable solution ? We don't want to leave qcow2 image format as it 
does allow to do live snapshots et al.

Thanks for your inputs,
-Sylvain Bauza

             reply	other threads:[~2013-02-12 14:30 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-12 14:30 Sylvain Bauza [this message]
2013-02-13  7:21 ` Win2003 disk corruption with kvm-1.0. and virtio Philipp Hahn
2013-02-13  9:56   ` Sylvain Bauza
2013-02-13 16:03     ` weber
2013-02-14  5:27       ` Michael Tokarev
2013-02-14  8:23   ` Sylvain Bauza
2013-02-13  9:03 ` Stefan Hajnoczi
2013-02-13  9:53   ` Sylvain Bauza
2013-02-14  8:15     ` Stefan Hajnoczi
2013-02-14 10:11       ` Sylvain Bauza
2013-03-12 15:48         ` Sylvain Bauza
2013-03-12 21:10           ` Jorge Armando Medina
2013-02-14  8:17 ` Stefan Hajnoczi

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