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Re: Random chmod errors

From: Paul Eggert
Subject: Re: Random chmod errors
Date: Thu, 09 Jun 2005 10:17:15 -0700
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.4 (gnu/linux)

Peter Kratzer <address@hidden> writes:

> We have also contacted the StorageTek support. They don't have a clue
> either. They suggested a network trace on the storage device. The problem
> there is the trace stopa a file size of 1 GB. And that's nothing for lots
> of users using the same machines and often producing hundreds of gigabytes
> of hardware simulation data. As long as I cannot predicably reproduce the
> problem I am lost there.

Going back and reading the original symptoms, I am suspicious that
somehow the NFS idempotency cache is getting in your way.  This is
what comes into play when a packet is lost (are you running NFS or
UDP or TCP, by the way?) and the client retries.

However, this is just a suspicion.

In any event, I doubt whether it's a bug in coreutils; more likely
it's a bug in the NFS client code on the Linux side, or in the NFS
server code on the StorageTek side.  If you have some non-Linux
clients (e.g., FreeBSD, or the reference platform Solaris) you can
test part of this theory by running the same version of coreutils on
both and seeing whether the problem occurs on them.

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