[LU-8914] write call hung in wait_on_page_bit

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Minor
• Labels: llnl
• Environment: lustre-2.5.5-10chaos.4; rhel 7.3
• Severity: 3
• Assignee: Zhenyu Xu
• Reporter: Olaf Faaland

Description

write system call hangs with identical stack to LU-4540.

Comments in that ticket ascribe the error to LU-3321 commits, however our patch stack does not have most of the LU-3321 commits. The only one I found is:

LU-4786 osc: to not pick busy pages for ELC

so it's unclear to me whether the problem we are seeing is due to the same root cause.