[LU-19124] sanity test_27P: timeout on Ubuntu 22.04 clients

• Type: Bug
• Resolution: Unresolved
• Priority: Major
• Labels: always_except
• Severity: 3
• Assignee: Jian Yu
• Reporter: Maloo

Description

This issue was created by maloo for Andreas Dilger <[e-mail]>

This issue relates to the following test suite run: https://testing.whamcloud.com/test_sets/0edeb1e8-95fe-4dc3-a922-61d31e36b0ef

test_27P failed with the following error:

Timeout occurred after 120 minutes, last suite running was sanity

Test session details:
clients: https://build.whamcloud.com/job/lustre-reviews/114502 - 5.15.0-142-generic
servers: https://build.whamcloud.com/job/lustre-reviews/114502 - 4.18.0-553.53.1.el8_lustre.x86_64

This is only failing since 2025-06-21 and only on Ubuntu 22.04 (5.15.0-142-generic) clients, but it is now failing 100% on that configuration on both master and b_es7_0.
Prior testing for Ubuntu 22.04 was running kernel 5.15.0-94-generic and was passing.

INFO: task lfs:104656 blocked for more than 120 seconds.
      5.15.0-142-generic #152-Ubuntu
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
 task:lfs             state:D stack:    0 pid:104656 ppid:104477 flags:0x00004002
 Call Trace:
  <TASK>
  __schedule+0x24e/0x590
  schedule+0x69/0x110
  rwsem_down_write_slowpath+0x230/0x3e0
  down_write+0x47/0x60
  vfs_unlink+0x50/0x290
  do_unlinkat+0x19e/0x2c0
  __x64_sys_unlinkat+0x3a/0x70

VVVVVVV DO NOT REMOVE LINES BELOW, Added by Maloo for auto-association VVVVVVV
sanity test_27P - Timeout occurred after 120 minutes, last suite running was sanity