From owner-freebsd-hackers@FreeBSD.ORG Sat Jan 23 09:19:07 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3085E106568B for ; Sat, 23 Jan 2010 09:19:07 +0000 (UTC) (envelope-from list@sheringeorge.co.cc) Received: from mail-pw0-f44.google.com (mail-pw0-f44.google.com [209.85.160.44]) by mx1.freebsd.org (Postfix) with ESMTP id 169038FC08 for ; Sat, 23 Jan 2010 09:19:06 +0000 (UTC) Received: by pwi15 with SMTP id 15so1419098pwi.3 for ; Sat, 23 Jan 2010 01:19:06 -0800 (PST) MIME-Version: 1.0 Received: by 10.141.106.10 with SMTP id i10mr2817692rvm.188.1264238346584; Sat, 23 Jan 2010 01:19:06 -0800 (PST) Date: Sat, 23 Jan 2010 14:49:06 +0530 Message-ID: <7f14551c1001230119r65464667t6d6b604118101419@mail.gmail.com> From: Sherin George To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Strange network issue in freebsd 8 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Jan 2010 09:19:07 -0000 Hello, 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. /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: root@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