On Sat, 23 Jan 2010, Sherin George wrote:
i am facing some sort of strange network issue in a freebsd server
occasionally.
OS: FreeBSD 8.0-RELEASE - amd64
The servers loses network connection once in a few days. I logged into
console and verified that network is up. I even restarted network service
using following command.
I'd suggest sending this e-mail to freebsd-net; there have been significant
link layer changes in 8.0, and it's possible this is a side effect (and bug)
from that. The appropriate people will pick it up on that list.
Also, I notice you're running 8.0-RELEASE, rather than the latest patch level
(which included some important security impovements and stability
improvements); you may want to slide forward using freebsd-update or a manual
rebuild. You will need to reboot to pick up some of the improvements.
Robert N M Watson
Computer Laboratory
University of Cambridge
/etc/rc.d/netif restart
Still, it didn't fix.
I checked /var/log/messages, but I am not getting any clue.
==============
Jan 19 12:10:20 myserver kernel: GEOM_MIRROR: Device gm0: rebuilding
provider ad0 finished.
Jan 19 20:20:23 myserver nfsd[732]: select failed: Interrupted system call
Jan 19 20:21:07 myserver nfsd[732]: select failed: Interrupted system call
Jan 23 02:14:33 myserver login: ROOT LOGIN (root) ON ttyv0
Jan 23 02:19:51 myserver kernel: ifa_del_loopback_route: deletion failed
Jan 23 02:19:57 myserver kernel: em0: link state changed to DOWN
Jan 23 02:20:02 myserver kernel: em0: link state changed to UP
Jan 23 02:29:58 myserver reboot: rebooted by root
Jan 23 02:29:58 myserver syslogd: exiting on signal 15
Jan 23 02:31:31 myserver syslogd: kernel boot file is /boot/kernel/kernel
Jan 23 02:31:31 myserver kernel: Copyright (c) 1992-2009 The FreeBSD
Project.
Jan 23 02:31:31 myserver kernel: Copyright (c) 1979, 1980, 1983, 1986, 1988,
1989, 1991, 1992, 1993, 1994
Jan 23 02:31:31 myserver kernel: The Regents of the University of
California. All rights reserved.
Jan 23 02:31:31 myserver kernel: FreeBSD is a registered trademark of The
FreeBSD Foundation.
Jan 23 02:31:31 myserver kernel: FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:02:08
UTC 2009
Jan 23 02:31:31 myserver kernel: r...@mason.cse.buffalo.edu:
/usr/obj/usr/src/sys/GENERIC
Jan 23 02:31:31 myserver kernel: Timecounter "i8254" frequency 1193182 Hz
quality 0
==============
Network, TCP stack all were up. It was pinging gateway even. But, traceroute
was not going beyond gateway.
I believe the issue is not related to anything outside server since a reboot
always fixes the issue.
I will be grateful for any advise that can help me in troubleshooting this
problem.
--
Best Regards,
Sherin
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