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Diffstat (limited to 'results/classifier/deepseek-r1:14b/output/files/520')
| -rw-r--r-- | results/classifier/deepseek-r1:14b/output/files/520 | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:14b/output/files/520 b/results/classifier/deepseek-r1:14b/output/files/520 new file mode 100644 index 000000000..df05dffe8 --- /dev/null +++ b/results/classifier/deepseek-r1:14b/output/files/520 @@ -0,0 +1,34 @@ + +qemu-ga fsfreeze crashes the kernel +Description of problem: +Hello, + +Still required your attention, duplicate from: +https://bugs.launchpad.net/bugs/1807073 +https://bugs.launchpad.net/bugs/1813045 + +We use mainly Cloudlinux, Debian and Centos. +We experienced many crashes on our qemu instances based on Cloudlinux during a snapshot. +The issue is not related to CloudLinux directly, but to Qemu agent, which does not freeze the file system(s) correctly. What is actually happening: + +When VM backup is invoked, Qemu agent freezes the file systems, so no single change will be made during the backup. But Qemu agent does not respect the loop* devices in freezing order (we have checked its sources), which leads to the next situation: +1) freeze loopback fs + ---> send async reqs to loopback thread +2) freeze main fs +3) loopback thread wakes up and trying to write data to the main fs, which is still frozen, and this finally leads to the hung task and kernel crash. + +Moreover, a lot of Proxmox users are complaining about the issue as well: +https://forum.proxmox.com/threads/error-vm-100-qmp-command-guest-fsfreeze-thaw-failed-got-timeout.68082/ +https://forum.proxmox.com/threads/problem-with-fsfreeze-freeze-and-qemu-guest-agent.65707/ +Steps to reproduce: +1. Manually start backup for the VM with qemu-agent enabled. +2. The backup process stuck at "INFO: issuing guest-agent 'fs-freeze' command" +3. The VM become unavailable, you can only unlock it and force reset. +Additional information: +/var/log/messages logs: +Aug 6 21:54:00 cpanel qemu-ga: info: guest-ping called +Aug 6 21:54:01 cpanel qemu-ga: info: guest-fsfreeze called +Aug 6 21:54:01 cpanel qemu-ga: info: executing fsfreeze hook with arg 'freeze' + + +after this the VM becomes completely unavailable. |