[LU-12691] obd_max_recoverable_clients is not atomic

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.13.0, Lustre 2.12.4
• Affects Version/s: Lustre 2.10.8
• Severity: 3
• Assignee: Tatsushi Takamura
• Reporter: Tatsushi Takamura

Description

Originally obd_max_recoverable_clients is not increased at the same moment.
But because of LU-3540, it will be increased by multiple processes.
This causes LBUG.

The type of obd_max_recoverable_clients should be atomic_t and be handled by atomic operations.

Issue Links

• duplicates: LU-11001 insanity test_2: :check_for_recovery_ready()) ASSERTION( clnts <= obd->obd_max_recoverable_clients )