[LU-9066] ior ERROR: read() failed, Input/output error; client was evicted after OST failover

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Affects Version/s: Lustre 2.9.0, Lustre 2.10.0
• Severity: 3
• Assignee: nasf (Inactive)
• Reporter: nasf (Inactive)

Description

During the OST failover, it was reported:

2016-12-05 02:42:07 [115035.688184] LustreError: 138-a: fs1-OST0001: A client on nid 172.18.1.103@o2ib was evicted due to a lock completion callback time out: rc -19

On the client side, IOR got I/O failure:

bluepill-client03: IOR-3.0.1: MPI Coordinated Test of Parallel I/O
bluepill-client03: 
bluepill-client03: Began: Sun Dec  4 18:28:38 2016
bluepill-client03: Command line used: /usr/local/bin/IOR -o /mnt/fs1//ha.sh-111769/bluepill-client03-ior/f.ior -f /test-tools/grev/Cray/2016_snx2k_fvt.ior.shared_file.p
...
bluepill-client03: 	clients            = 88 (8 per node)
...
bluepill-client03: Commencing read performance test: Mon Dec  5 02:34:58 2016
bluepill-client03: ior ERROR: read() failed, errno 5, Input/output error (aiori-POSIX.c:250)

Issue Links

• duplicates: LU-8860 lock callback errors after client umount
• is related to: LU-8359 Wrong evict during failover
• is related to: LU-8860 lock callback errors after client umount