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Diffstat (limited to 'results/classifier/gemma3:12b/kvm/1201447')
| -rw-r--r-- | results/classifier/gemma3:12b/kvm/1201447 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/kvm/1201447 b/results/classifier/gemma3:12b/kvm/1201447 new file mode 100644 index 000000000..88d7acadf --- /dev/null +++ b/results/classifier/gemma3:12b/kvm/1201447 @@ -0,0 +1,18 @@ + +Blue screen when disk uses cache='writeback' + +I am running Windows 2008R2 as KVM guest on Ubuntu 12.04 hypervisor. Disk controller and network card are virtio devices with drivers from https://launchpad.net/kvm-guest-drivers-windows/+download (virtio-win-drivers-20120712-1.iso). +Everything worked fine until I changed disk controller cache from the default (writethrough) to writeback. This introduced occasional blue screens. I noticed that they are linked to high disk IO. For example restoring over 1GB of backup files will results in a blue screen on around 4 out of 5 attempts. Also Windows update crashes the system sometimes. When idle the system will run fine for hours or sometimes even days. +After removing cache='writeback' from the config everything came back to normal. + +qemu-kvm: + Installed: 1.0+noroms-0ubuntu14.8 + Candidate: 1.0+noroms-0ubuntu14.8 + Version table: + *** 1.0+noroms-0ubuntu14.8 0 + 500 http://archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages + 100 /var/lib/dpkg/status + 1.0+noroms-0ubuntu14.7 0 + 500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages + 1.0+noroms-0ubuntu13 0 + 500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages \ No newline at end of file |