[Bug 404394] Re: kvm-84: virtio on qcow2 broken (regression)

[nentis]

Do not deploy this updated version.

I installed kvm_84+dfsg-0ubuntu12.4_amd64.deb and it has made the
problem worse.  Now RAW disk images are having disk I/O errors and I'm
still getting I/O errors in qcow2 images.

root at kvm-host:~# file /kvm/guest/disk0.raw
/kvm/guest/disk0.raw: x86 boot sector; partition 1: ID=0x83, active, starthead 1, startsector 63, 19502847 sectors; partition 2: ID=0x5, starthead 254, startsector 19502910, 963900 sectors


>From guest dmesg:

[  415.850777] end_request: I/O error, dev vda, sector 16466887
[  415.850789] Buffer I/O error on device vda1, logical block 2058353
[  415.851459] lost page write due to I/O error on vda1
[  415.851463] Buffer I/O error on device vda1, logical block 2058354
[  415.852167] lost page write due to I/O error on vda1

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kvm-84: virtio on qcow2 broken (regression)
https://bugs.launchpad.net/bugs/404394
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