From: Marc Schmitt <mschmitt@inf.ethz.ch>
Subject: Re: nfs_statfs: statfs error = 116
Date: 18 Sep 2003 21:26:23 +0200
Sender: nfs-admin@lists.sourceforge.net
Message-ID: <1063913183.1553.25.camel@localhost>
References: <3F698142.6070404@inf.ethz.ch>  <3F69B7FB.1050505@RedHat.com>
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Cc: nfs@lists.sourceforge.net
To: Steve Dickson <SteveD@redhat.com>
In-Reply-To: <3F69B7FB.1050505@RedHat.com>
Errors-To: nfs-admin@lists.sourceforge.net

On Thu, 2003-09-18 at 15:49, Steve Dickson wrote:
> Marc Schmitt wrote:
> 
> >
> > My questions are:
> >
> > - Is this a race? 
> 
> It sounds to me like it could be be a server issue under
> a very heavy load...  How many nfsd are you running? Try
> increasing the number to see if that helps....

Thanks, I'm trying that and changed the number of nfsd from 32 to 64 on
the production system.

> > - How can I provide more debugging infos if needed? 
> 
> ethereal traces have more information and are
> generally more useful... imo...

I'll try to get a test setup running with the same software versions,
create a couple hundres of exports and bomb it from one of the our
clusters with bonnie++s. Like that I'll hopefully be able to reproduce
this re-exporting issue.

A user has found a bug that appears when checking out a big subversion
repository on the same server over NFS, it will always timeout upon this
huge amount of file manipulations and the checkout fails. He then
reproduced the issue with a small script that basicly loops over those
four commands:

rename ("old/bla", "new/bla")
stat("new,bla",..)
chmod("new/bla")
rename ("new/bla", "old/bla")

Before 1000 iterations the script returns: Error setting new/bla to
read-only! We'll try to narrow this down on the test cluster, too. One
particularity has been found already: the bug only appears if
the renaming takes place over directory boundries.

Regards,
    Marc


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