Re: [NFS] Help: 2.2.18 NFS is corrupting our files

Re: [NFS] Help: 2.2.18 NFS is corrupting our files

[Trond Myklebust]

>>>>> " " == Patrick J LoPresti <patl@curl.com> writes:

     > This developer is now regularly seeing two problems which began
     > with the 2.2.18 upgrade.  First, remote clients occasionally
     > get "stale NFS file handle" errors for no apparent reason.
     > Second, some of the files are being corrupted.

What filesystem are you exporting?

Cheers,
  Trond
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Re: [NFS] Help: 2.2.18 NFS is corrupting our files

[Patrick J. LoPresti]

Trond Myklebust <trond.myklebust@fys.uio.no> writes:

> What filesystem are you exporting?

Just ext2; all of our file systems are ext2.

The disks here are a mixture of IDE, SCSI (aic7xxx and sym53c8xx), and
Mylex DAC960 RAID.  In this case, the machine running 2.2.18 has
aic7xxx SCSI.  I suspect I could reproduce the problem on other
configurations; let me know if that would be useful.

 - Pat
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Re: [NFS] Help: 2.2.18 NFS is corrupting our files

[Neil Brown]

On  January 22, patl@curl.com wrote:
> We have a LAN with about 40 Linux systems on it.  We use the Berkeley
> "customs" suite to perform parallelized builds of our product.  So we
> hammer NFS pretty hard; 30-40 machines can be simultaneously reading
> and writing a single build tree through NFS.
> 
> We upgraded one of our developers to 2.2.18.  We also upgraded all of
> our systems to the latest nfs-utils (0.2.1) and mount (2.10m) packages
> from <http://nfs.sourceforge.net/>.
> 
> As a result, we now have a large number of 2.2.17 NFS clients reading
> and writing to a 2.2.18 NFS server.  The server (the developer's
> desktop system) is SMP, and all of our systems have ECC memory.
> 
> This developer is now regularly seeing two problems which began with
> the 2.2.18 upgrade.  First, remote clients occasionally get "stale NFS
> file handle" errors for no apparent reason.  Second, some of the files
> are being corrupted.

Could you retry after applying patches from
    http://www.cse.unsw.edu.au/~neilb/patches/knfsd-2.2/

particularly patch-B-sema.

Thanks,

NeilBrown
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