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To: bugs@freebsd.org
cc: bri@zellis.com
Subject: NFS hangs under 2.1.*
Date: Tue, 08 Oct 1996 09:25:08 +0000
From: Brian Ellis <bri@netpics.com>
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I've got a server that hangs several times a day and was wondering
if there are known NFS bugs in 2.1.*. It's a Pentium 133, 64Mb,
5Gb of scsi disks, adaptec 2940 scsi card, SMC EtherPower PCI card.
It runs news, several disk intensive cron jobs, SAMBA, httpd, and
is an NFS server for 7 clients.  The load average is typically 1.

Several times a day, I find it hung. Daemons are still accepting
connections, but won't respond after connect. NFS times out. If I
have a shell prompt, I can press return and be re-prompted, but typing
any command hangs the shell uninterruptably. There is no panic and
no crash dump.

I've replaced *all* of the hardware once (totally new box) and upgraded
from 2.1.0-RELEASE to 2.1.5-RELEASE with the same results.

I'm thinking it might be NFS related because the machine is crashing
more and more often as I add more NFS clients. Also, it's interesting
that a second, lightly loaded NFS server, crashes also (same symptoms)
but much less frequently. None of our non-NFS-server FreeBSD boxes
have ever crashed.

I'd hate to have to give up FreeBSD on our central server! Any ideas?

Thanx a lot for your time.

-Brian Ellis
Netpics, Inc.