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Diffstat (limited to 'results/classifier/deepseek-2-tmp/reasoning/manual-review/819')
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diff --git a/results/classifier/deepseek-2-tmp/reasoning/manual-review/819 b/results/classifier/deepseek-2-tmp/reasoning/manual-review/819 new file mode 100644 index 000000000..9c09ba7c4 --- /dev/null +++ b/results/classifier/deepseek-2-tmp/reasoning/manual-review/819 @@ -0,0 +1,15 @@ +<think> +Okay, let me try to classify this bug report for QEMU. The user mentioned a problem during virtual disk live migration where VMs experience severe stuttering and CPU soft lockups. They included a link to a kernel bug report, which I can't access, but from the description, it seems related to high disk latency leading to system hangs. + +Looking at the symptoms: the syslog shows a soft lockup on CPU#1 for 22 seconds. Soft lockups typically happen when a CPU is stuck in a long loop without yielding, often due to I/O waits. The iotest output shows some requests taking an unusually long time (like 22.5 seconds), which could be causing the system to hang. + +Since this occurs during live migration, it's likely related to how data is being transferred or handled between storage systems. QEMU handles block I/O and storage migration, so any issues here might cause such lockups. + +Possible areas to look into: Maybe there's a bug in how QEMU handles certain disk operations during migration, leading to long waits that trigger the watchdog. Alternatively, it could be a problem with the underlying storage or network causing delays, but since it's specific to live migration and linked to a kernel issue, I'm leaning towards a QEMU-related bug. + +The classification options are: block I/O, device model, execution, guest agent, net I/O, or other. Since this is about disk operations during migration, which involves block I/O handling in QEMU, the most appropriate category would be 'block I/O'. +</think> + +**Classification: Block I/O** + +The bug report describes issues occurring during virtual disk live migration, where high disk latency leads to CPU soft lockups. This points to problems in how QEMU handles block I/O operations during storage transfers, making the 'block I/O' classification appropriate. \ No newline at end of file |