Subject: Re: NetBSD-1.5 and NFS - any suggestions?
To: Frank van der Linden <firstname.lastname@example.org>
From: Artem Belevich <email@example.com>
Date: 01/25/2002 15:15:14
On Fri, Jan 25, 2002 at 11:50:20PM +0100, Frank van der Linden <firstname.lastname@example.org> wrote:
> [Your Reply-to is set to email@example.com, which doesn't work,
> since a DNS lookup for an MX record on it fails. Anyway, you may
> have seen this message as sent to netbsd-users, but here it is
Argh! My fault. I've added reply-to manually and made a mistake.
> On Fri, Jan 25, 2002 at 12:40:55PM -0800, Artem Belevich wrote:
> > The problem is that under heavy NFS load (mostly as NFS client with
> > NetAPP filer as a server) the boxes lock up for up to several
> > minutes.
> Check either /var/log/messages for complaints from the drivers,
> or the output for nfsstat -c for 'errors' or 'retries'. If
Client side shows only a few NFS retries and that number does not
increase during pauses. I wrote a script that dumps nfsstat output
after each pause. Most of the time error count stays constant.
Here's what nfsstat gives me now:
[ irrelevant stats skipped ]
TimedOut Invalid X Replies Retries Requests
0 0 64 76 805254
[irrelevant server stats skipped]
Server Ret-Failed looks weird, though. Sometimes it stays constant
during pauses, sometimes it jumps about 10K or so. What exactly
"Ret-Failed" stands for anyway? Could that counter jump because nfsd
was stuck along with other processes and therefore couldn't reply in
> this somehow shows that packets are getting dumped by something
> in this setup (could be any piece of networking hardware in your
> path), try one of: 1) reduce the read/write size for the NFS
> mount (try 16k or 8k),
Didn't help. That was the first thing I tried.
> use TCP. See mount_nfs(8) for details.
Unfortunately, this is not an option.
#mount -o tcp server:/some/exported/path /mnt
server:/some/exported/path: nfsd: RPCPROG_NFS: RPC: Program not registered