AIX client is unable to lock a file that was previously locked by the same client
- ONTAP 9
- AIX 6.1 TL8
- AIX 6.1 TL9
- AIX 7.1 TL0
AIX clients report lock errors when attempting to lock a file. The file was previously locked by the same client/process without error.
If the client is running Oracle, the following errors might be reported:
Errors in file /mnt/oracle/udump/ora_20054240.trc:
ORA-01157: cannot identify/lock data file 201 - see DBWR trace file
ORA-01110: data file 201: '/mnt/oracle/tmp/XBR_TEMP01.dbf'
ORA-00210: cannot open the specified control file
ORA-00202: control file: '/mnt/oracle/control/control01.ctl'
ORA-27086: unable to lock file - already in use IBM AIX RISC System/6000 Error: 13: Permission denied Additional information: 8 Additional information: 57147422
A packet trace will show that the storage system is responding to NLM LOCK calls (
nlm.procedure_v4 == 2) with the error
NLM_DENIED (nlm.stat == 1). The issue will occur following a storage system failover, upgrade, node reboot, or any similar behavior that results in a NFS server state change.