[gpfsug-discuss] Strange timestamp behaviour on NFS via CES

Andreas Mattsson andreas.mattsson at maxiv.lu.se
Fri Feb 3 12:46:30 GMT 2017

I'm having some really strange timestamp behaviour when doing file operations on NFS mounts shared via CES on spectrum scale
The NFS clients are up to date Centos and Debian machines.
All Scale servers and NFS clients have correct date and time via NTP.

Creating a file, for instance 'touch file00', gives correct timestamp.
Moving the file, 'mv file00 file01', gives correct timestamp
Copying the file, 'cp file01 file02', gives a random timestamp anywhere in time, for instance Oct 12 2095 or Feb 29 1976 or something similar.

This is only via NFS. Copying the file via a native gpfs-mount or via SMB gives a correct timestamp.
Doing the same operation over NFS to other NFS-servers works correct, it is only when operating on the NFS-share from the Spectrum Scale CES the issue occurs.

Have anyone seen this before?

Andreas Mattsson
[cid:part1.08040705.03090509 at maxiv.lu.se]

Andreas Mattsson
Systems Engineer

MAX IV Laboratory
Lund University
P.O. Box 118, SE-221 00 Lund, Sweden
Visiting address: Fotongatan 2, 225 94 Lund
Mobile: +46 706 64 95 44
andreas.mattsson at maxiv.se<mailto:andreas.mattsson at maxiv.se>

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