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authorChristian Krinitsin <mail@krinitsin.com>2025-06-30 12:34:26 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-30 12:35:44 +0000
commit25f8033d556aa17afaea4a5196ea7a69fe248320 (patch)
tree0f056db167683be54ea1e5e72d29d6069af55e7d /results/classifier/deepseek-2-tmp/output/hypervisor/1201447
parent8e6da29e4ee5fc14bc1cc816a24f21271f14090d (diff)
downloademulator-bug-study-25f8033d556aa17afaea4a5196ea7a69fe248320.tar.gz
emulator-bug-study-25f8033d556aa17afaea4a5196ea7a69fe248320.zip
add new temporary deepseek-r1:14b results
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+
+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
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