[LU-14397] A race between lock enqueue and idle import

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.15.0
• Affects Version/s: Lustre 2.14.0
• Labels: patch
• Severity: 3
• Assignee: Alexander Boyko
• Reporter: Alexander Boyko

Description

There is a window after ptlrpc_check_import_is_idle() and setting LUSTRE_IMP_CONNECTING for lock enqueue. The lock get granted on OST and is returned to the client. Server's lock is destroyed on OST_DISCONNECT.

Issue Links

• is related to: LU-17846 sanity test_812c: mdt_handler.c:196:mdt_lock_handle_assert()) ASSERTION( !lustre_handle_is_used(&lh->mlh_rreg_lh) ) failed