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

[Stephen Ulmer]

That’s a cool one. :)

What if you use the "random date" file as a time reference to touch another file (like, 'touch -r file02 file03’)?

-- 
Stephen



> On Feb 3, 2017, at 7:46 AM, Andreas Mattsson <andreas.mattsson at maxiv.lu.se <mailto:andreas.mattsson at maxiv.lu.se>> wrote:
> 
> I’m having some really strange timestamp behaviour when doing file operations on NFS mounts shared via CES on spectrum scale 4.2.1.1
> 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?
>  
> Regards,
> Andreas Mattsson
> _____________________________________________
> <image001.png>
>  
> 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>
> www.maxiv.se <http://www.maxiv.se/>
>  
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