[LU-2366] Soft lockups under ptlrpc_check_set

• Type: Bug
• Resolution: Duplicate
• Priority: Major
• Affects Version/s: Lustre 2.4.0
• Labels: sequoia
• Environment: 2.3.56-2chaos (github.com/chaos/lustre)
• Severity: 3
• Assignee: Jinshan Xiong (Inactive)
• Reporter: Christopher Morrone (Inactive)

Description

In the fsync at after writing in a file-per-process ior, we're seeing many lustre clients on Sequoia getting stuck in soft lockups.

See attached console log for one of the nodes in file RB5-ID-J02.log.

This may be a similar problem to LU-2332, but under a user-space process, not under ptlrpcd.

Issue Links

• is related to: LU-2263 CPU Soft Lockups due to many threads spinning on import lock on Sequoia IO nodes