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Diffstat (limited to 'results/classifier/deepseek-1/reasoning/QEMU.}/886255')
| -rw-r--r-- | results/classifier/deepseek-1/reasoning/QEMU.}/886255 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/results/classifier/deepseek-1/reasoning/QEMU.}/886255 b/results/classifier/deepseek-1/reasoning/QEMU.}/886255 new file mode 100644 index 00000000..30533bd2 --- /dev/null +++ b/results/classifier/deepseek-1/reasoning/QEMU.}/886255 @@ -0,0 +1,23 @@ +<think> +Alright, let me try to work through this problem. So, from what I understand, there was an issue with KVM autotest where trying to shut down a VM using a shell command resulted in a failure. The logs show that the system tried to login via SSH but got a connection refused error. Then it attempted to kill the VM using a monitor command and finally marked the VM as down. + +The user suspects that each new QEMU process instance might have a different NIC MAC address, which could be triggering some issue in conjunction with the guest's init scripts. However, this problem doesn't occur with QEMU-KVM or RHEL-based branches, so it must be something specific to how networking is configured in their setup. + +They tried reproducing the issue with an Ubuntu guest but couldn't, suggesting that the problem might be more related to how the networking is set up for the particular guest OS they're using. + +Further investigation revealed that empty SSH keys were being generated on the first boot, which initially pointed towards a network issue. However, upon closer examination, it turned out this wasn't the root cause after all. + +Then, they identified that the commit `47113ab6b8c5659ad94c69aacca572f731ebb0ac` resolved the issue. This commit re-enables the vm_clock when resuming all vCPUs. The problem was that the vm_clock was disabled during pausing but wasn't re-enabled upon resume, causing issues with rebooting the guest. + +So, putting it all together: the initial SSH connection failure and subsequent VM shutdown problems were symptoms of a deeper issue related to how QEMU handles virtual clocks when resuming vCPUs. This specific commit fixed that problem by ensuring the vm_clock is properly re-enabled, allowing the VM to shut down correctly without errors. +</think> + +The issue with the KVM autotest environment was traced back to an improper handling of the vm_clock in QEMU when resuming all virtual CPUs (vCPUs). Specifically, the vm_clock was disabled during a pause but wasn't re-enabled upon resume, leading to problems with rebooting or shutting down the guest VM. + +The fix involved updating QEMU to correctly re-enable the vm_clock when resuming vCPUs. This change resolved the issue, allowing the VMs to function as expected. + +**Answer:** +The problem was caused by a missing step in QEMU where the virtual machine clock (vm_clock) wasn't being re-enabled after resuming all vCPUs. The fix, provided by commit `47113ab6b8c5659ad94c69aacca572f731ebb0ac`, ensures that vm_clock is properly re-enabled during the resume process, resolving the shutdown issues. + +**Final Answer:** +\boxed{The issue was resolved by ensuring the vm_clock is re-enabled when resuming vCPUs in QEMU.} \ No newline at end of file |