https://bugzilla.kernel.org/show_bug.cgi?id=205833 Bug ID: 205833 Summary: fsfreeze blocks close(fd) on xfs sometimes Product: File System Version: 2.5 Kernel Version: 4.15.0-55-generic #60-Ubuntu Hardware: Intel OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: XFS Assignee: filesystem_xfs@xxxxxxxxxxxxxxxxxxxxxx Reporter: kernel.org@xxxxxxxxx Regression: No Dear all I noticed the bug while setting up a backup with fsfreeze and restic. How I reproduce it: 1. Write multiple MB to a file (eg. 100MB) while after one or two MB freeze the filesystem from the sidecar pod 2. From the sidecar pod, issue multiple `strace tail /generated/data/0.txt` 3. After a couple of tries strace shows that the `read(...)` works but `close(...)` hangs 4. From now on all `read(...)` operations are blocked until the freeze is lifted System: Ubuntu 18.04.3 LTS CPU: Intel(R) Xeon(R) CPU X5650 @ 2.67GHz Storage: /dev/mapper/mpathXX on /var/lib/kubelet/plugins/hpe.com/... type xfs (rw,noatime,attr2,inode64,noquota) I used this tool to generate the file. The number of concurrent files does not appear to matter that much. I was able to trigger the bug, tested with 2, 4 and 32 parallel files: https://gitlab.com/dns2utf8/multi_file_writer Cheers, Stefan PS: I opened a bug at the tool vendor too: https://github.com/vmware-tanzu/velero/issues/2113 -- You are receiving this mail because: You are watching the assignee of the bug.
