On Thu, 30 Aug 2001, Miguel A.L. Paraz wrote:

> On Wed, Aug 29, 2001 at 08:36:23AM +0800, Ian C. Sison wrote:
> > Do you have any news from the XFS front about getting nfs stable over XFS
> > or any other *FS?  So far the only 'true' support nfs has is with ext2 and
> > recently reiserfs.
> >
> > NFS is very important when dealing with file servers, really IMHO, the
> > implementation of kernel-nfs in linux very problematic...
>
> what's the drawback of using userland NFS?

slowwwwwww  zzzzZZZZZ, but in my experience, a little more stable..

> and, one reason the Maildir format was created was to allow safe mail delivery
> over NFS.  anyone doing this?  what fs is most suitable, in your opinion, for
> Maildir which has lots of relatively small files?
>
> the idea is to build a HA mail system using redundant MTA boxes mounting a
> single HA RAID-enabled spool machine.  one could argue that multiple mailbox
> machines distributed by something like the perdition proxy would be better,
> though.  I think Linux NFS will be the one to make-or-break the former.

I would go and experiment with a GFS cluster running on a fibre channel
disk array.  This way you can have multiple servers running an MTA,
POP/IMAP, and still have reliability and fault tolerance offered by the
shared/replicated media...

As i said, there's so much _duplication_ of effort with journalling file
systems (xfs, jfs, ext3, reiser) when what is really needed is a good
distributed file system that is deployable and is ready for prime-time..


_
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