From owner-freebsd-questions@FreeBSD.ORG Fri Jan 23 01:14:15 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D15CD16A4CF for ; Fri, 23 Jan 2004 01:14:14 -0800 (PST) Received: from smtp.infracaninophile.co.uk (happy-idiot-talk.infracaninophile.co.uk [81.2.69.218]) by mx1.FreeBSD.org (Postfix) with ESMTP id 974D143D5D for ; Fri, 23 Jan 2004 01:13:44 -0800 (PST) (envelope-from m.seaman@infracaninophile.co.uk) Received: from happy-idiot-talk.infracaninophile.co.uk (localhost.infracaninophile.co.uk [IPv6:::1])i0N9Dbse047153 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 23 Jan 2004 09:13:37 GMT (envelope-from matthew@happy-idiot-talk.infracaninophile.co.uk) Received: (from matthew@localhost)id i0N9DbGb047152; Fri, 23 Jan 2004 09:13:37 GMT (envelope-from matthew) Date: Fri, 23 Jan 2004 09:13:37 +0000 From: Matthew Seaman To: Heinrich Rebehn Message-ID: <20040123091337.GA46755@happy-idiot-talk.infracaninophile.co.uk> Mail-Followup-To: Matthew Seaman , Heinrich Rebehn , freebsd-questions@freebsd.org References: <4010DF2B.1070804@ant.uni-bremen.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="8t9RHnE3ZwKMSgU+" Content-Disposition: inline In-Reply-To: <4010DF2B.1070804@ant.uni-bremen.de> User-Agent: Mutt/1.5.5.1i X-Spam-Status: No, hits=-4.9 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=2.62 X-Spam-Checker-Version: SpamAssassin 2.62 (2004-01-11) on happy-idiot-talk.infracaninophile.co.uk cc: freebsd-questions@freebsd.org Subject: Re: How dangerous is 5.2 for production use X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Jan 2004 09:14:15 -0000 --8t9RHnE3ZwKMSgU+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 23, 2004 at 09:45:31AM +0100, Heinrich Rebehn wrote: > I am considering switching our "production" server from 4.9 to 5.2.=20 > "production" means that it serves some 20 people at our university=20 > institute. > Unfortunately the machine crashes occasionally which would be tolerable= =20 > if it was up again immediately. However the fsck of our 300+500 GB RAIDs= =20 > takes almost an hour and that's why i want to switch to 5.x because it=20 > fscks in the background. > The machine is an ASUS A7V333 with AMD XP 1800+ and 512 MB RAM, 3ware=20 > 7500 RAID. > It provides the 'usual' services: > - NFS > - Samba > - IMAP > - SMTP > - LPD printing > - Mailman > - HTTP > - Postgres > - LDAP User, mail aliases, automount info > - IMP Webmail >=20 > So, no fancy hard- or software, i guess. > Would it be very hazardous to sitch to 5.2 already now? I think that you would probably not have any worse trouble with 5.2 as you do with 4.9. However, I'm wondering why your server "crashes occasionally". The spec. you show should be quite capable of handling e-mail, including webmail, for 20 people. Unless they are sending round enormous multimedia files or something. Serving out 800Gb of files via NFS and Samba, or running Postgresql databases of that sort of size is going to stress the system though. If you are crashing because your system is running out of resources under load, then upgrading to 5.2 probably won't help you very much. Better to slap in another half Gig of RAM, if you can afford it, and take a good hard look at tuning(7). > Another thing: Is there any point in converting the filesystems to UFS2= =20 > (in a later step)? Certainly. You will find it better suited to the large filesystems you have than UFS1. I also have a vague feeling that background fsck is a UFS2 feature, but I can't find documentation to either confirm or deny that. --=20 Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way PGP: http://www.infracaninophile.co.uk/pgpkey Marlow Tel: +44 1628 476614 Bucks., SL7 1TH UK --8t9RHnE3ZwKMSgU+ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAEOXBdtESqEQa7a0RAmlDAKCJ5wlQ9mVP3p90RpL/ygnOCZdnVACfffsG N10w+I0+cTOJhrNHfBc00RQ= =FexU -----END PGP SIGNATURE----- --8t9RHnE3ZwKMSgU+--