From owner-freebsd-questions@FreeBSD.ORG Thu Aug 9 15:30:39 2012 Return-Path: Delivered-To: freebsd-questions@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1D276106564A for ; Thu, 9 Aug 2012 15:30:39 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3cd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id 6FE488FC0C for ; Thu, 9 Aug 2012 15:30:38 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [IPv6:2001:8b0:151:1:fa1e:dfff:feda:c0bb]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.5/8.14.5) with ESMTP id q79FUSKk090243 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Thu, 9 Aug 2012 16:30:29 +0100 (BST) (envelope-from matthew@FreeBSD.org) X-DKIM: OpenDKIM Filter v2.5.2 smtp.infracaninophile.co.uk q79FUSKk090243 Authentication-Results: smtp.infracaninophile.co.uk/q79FUSKk090243; dkim=none (no signature); dkim-adsp=none Message-ID: <5023D78D.6070404@FreeBSD.org> Date: Thu, 09 Aug 2012 16:30:21 +0100 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 To: dude golden References: <1340356289.73682.YahooMailNeo@web160602.mail.bf1.yahoo.com> <4FE448AF.5070906@FreeBSD.org> <1344523551.88887.YahooMailNeo@web160604.mail.bf1.yahoo.com> <1344523941.96245.YahooMailNeo@web160604.mail.bf1.yahoo.com> In-Reply-To: <1344523941.96245.YahooMailNeo@web160604.mail.bf1.yahoo.com> X-Enigmail-Version: 1.4.3 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig9DE1341A574121C7113C9E71" X-Virus-Scanned: clamav-milter 0.97.5 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on lucid-nonsense.infracaninophile.co.uk Cc: "freebsd-questions@FreeBSD.org" Subject: Re: kernel panic X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Aug 2012 15:30:39 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig9DE1341A574121C7113C9E71 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 09/08/2012 15:52, dude golden wrote: > hope my email find you well,first of all thank you very much for your > grate response always in answering my emails, now i am using freeBSD > 8.3 in a Intel corI5 server with 12 G of RAM and 500 G HDD sata .we > have a voip soft switch application installed on it and do > telecommunication business, yesterday night we experience a strange > kernel panic and our server hanged, just contact collocation as asked > for physical reboot, > in attached, you can find screen shot of rebooting the server . i > really thank full if you take a look and advise me any update. The freebsd-questions@ probably won't have seen the screen shot, but it showed me that the problem was in ffs_blkfree, ie. that the system panicked because of filesystem corruption. Unfortunately you haven't enabled a dump device, so no more detailed debugging info will be available. There's not a huge amount that can be determined just from the panic screen unfortunately. However, in terms of general advice: * You need to ensure that there is no lingering filesystem corruption which could trigger a repeat. Reboot the system into single user mode, and then run: fsck -fy /dev/ad7s4a etc. for all the devices listed in /etc/fstab or elsewhere that have active filesystems on them. Run fsck like that repeatedly for each partition until it says 'filesystem clean.' * Enable system dumps, so if this happens again, there is more to go on. Just add: dumpdev=3D"AUTO" to /etc/rc.conf and reboot. * The problem could well be due to disk malfunction, or maybe something as trivial as a loose or kinked data cable leading to the drive, or overheating. Powering the machine down, opening the case and checking for any obvious problems would be a good idea. Also, check the system logs to see if there are any kernel messages indicating non-fatal trouble. Install the sysutils/smartmontools port and use that to get a health report on the drive: smartctl -A /dev/ad7 * It seems you don't have any sort of hard drive resilience set up. If this server is important for your business, then using mirrored hard drives is just plain common sense. If there's room in the chassis, simply adding another drive identical to the one you have and setting up gmirror RAID should be fairly simple and will offer adequate levels of protection against such failures. --=20 Dr Matthew J Seaman MA, D.Phil. PGP: http://www.infracaninophile.co.uk/pgpkey --------------enig9DE1341A574121C7113C9E71 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlAj15QACgkQ8Mjk52CukIyvVQCggWJEyPT32cqC8XxRksJW9N+f 7f8An2mit/QwP+DpI0d4rpf/uJ2T2p9L =BmWg -----END PGP SIGNATURE----- --------------enig9DE1341A574121C7113C9E71--