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
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