Re: PG on NFS may be just a bad idea

Tom,

> Maybe we need to actively discourage people from running Postgres
> against NFS-mounted data directories.  Shane Kerr's paper cited above
> mentions some other rather scary properties, including O_EXCL file
> creation not really working properly.

Wouldn't you be describing a Linux-specific issue, though?  And possibly
kernel-specific?

It's hard to reconcile this with the real-world performance of
PostgreSQL on NFS, which is happening all over the place.  Most notably,
Joe Conway's 20,000 txn/sec.

I *do* think it's an accurate statement that if you're going to use
Postgres, or any other OLTP database, on NFS you'd better have access to
a NAS expert.  But to say that it's a bad idea even if you have expert
help is probably going to far.

--Josh Berkus