From owner-freebsd-questions@FreeBSD.ORG Tue Jun 5 18:40:05 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0433F16A46F for ; Tue, 5 Jun 2007 18:40:05 +0000 (UTC) (envelope-from kris@obsecurity.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.freebsd.org (Postfix) with ESMTP id E66A613C48C for ; Tue, 5 Jun 2007 18:40:04 +0000 (UTC) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196]) by elvis.mu.org (Postfix) with ESMTP id 8381C1A4D84; Tue, 5 Jun 2007 11:41:22 -0700 (PDT) Received: from rot13.obsecurity.org (rot13.obsecurity.org [192.168.1.5]) by obsecurity.dyndns.org (Postfix) with ESMTP id 3A9CB511D0; Tue, 5 Jun 2007 14:40:04 -0400 (EDT) Received: by rot13.obsecurity.org (Postfix, from userid 1001) id 2C59AC207; Tue, 5 Jun 2007 14:40:04 -0400 (EDT) Date: Tue, 5 Jun 2007 14:40:04 -0400 From: Kris Kennaway To: Nicole Harrington Message-ID: <20070605184004.GA45595@rot13.obsecurity.org> References: <661463.95597.qm@web34503.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <661463.95597.qm@web34503.mail.mud.yahoo.com> User-Agent: Mutt/1.4.2.2i Cc: freebsd-questions@freebsd.org Subject: Re: How to solve mysterious system lockups? 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: Tue, 05 Jun 2007 18:40:05 -0000 On Mon, Jun 04, 2007 at 04:40:56PM -0700, Nicole Harrington wrote: > Hello > I have several systems that are used as squid > caching servers. I have some systems that use SCSI > disks and some that use SATA disks. They are > identical in everyway except for the sata vs SCSI > drives. > > At random times, the sata based systems seem to be > freezing. You can ping them and they respond, but you > cannot log in. Nor are any logs processed during that > time. > > I figure it mist be something to do with the disks, > but I am not sure how to solve it. There seems to be > little rhyme or reason. It does not happen necessarily > during busy times. It can happen in the middle of the > night. > > Any pointers in how to track down the cause would be > much appreciated. See the email I sent yesterday to a similar question. Kris