Are you saying they can’t mount the filesystem, or they can’t write to a
mounted filesystem? Where does this system get its user information from, if
the latter?
--
____
|| \\UTGERS, |---------------------------*O*---------------------------
||_// the State | Ryan Novosielski - novos...@rutgers.edu
|| \\ University | Sr. Technologist - 973/972.0922 (2x0922) ~*~ RBHS Campus
|| \\ of NJ | Office of Advanced Research Computing - MSB C630, Newark
`'
> On Apr 19, 2017, at 12:09, Prentice Bisbal <pbis...@pppl.gov> wrote:
>
> Beowulfers,
>
> I've been trying to troubleshoot a problem for the past two weeks with no
> luck. We have a cluster here that runs only one application (although the
> details of that application change significantly from run-to-run.). Each node
> in the cluster has an NFS export, /local, that can be automounted by every
> other node in the cluster as /l/hostname.
>
> Starting about two weeks ago, when jobs would try to access /l/hostname, they
> would get permission denied messages. I tried analyzing this problem by
> turning on all NFS/RPC logging with rpcdebug and also using tcpdump while
> trying to manually mount one of the remote systems. Both approaches indicated
> state file handles were prevent the share from being mounted.
>
> Since it has been 6-8 weeks since there were any seemingly relevant system
> config changes, I suspect it's an application problem (naturally). On the
> other hand, the application developers/users insist that they haven't made
> any changes, to their code, either. To be honest, there's no significant
> evidence indicating either is at fault. Any suggestions on how to debug this
> and definitively find the root cause of these stale file handles?
>
> --
> Prentice
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