From owner-freebsd-current@FreeBSD.ORG Fri May 9 15:37:01 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9990F37B401 for ; Fri, 9 May 2003 15:37:01 -0700 (PDT) Received: from dsl-mail.kamp.net (mail.kamp-dsl.de [195.62.99.42]) by mx1.FreeBSD.org (Postfix) with SMTP id 211E443F3F for ; Fri, 9 May 2003 15:37:00 -0700 (PDT) (envelope-from me@farid-hajji.de) Received: (qmail 10460 invoked by uid 505); 9 May 2003 22:36:59 -0000 Received: from me@farid-hajji.de by dsl-mail by uid 502 with qmail-scanner-1.14 (spamassassin: 2.43. Clear:. Processed in 0.168141 secs); 09 May 2003 22:36:59 -0000 Received: from unknown (HELO reverse-213-146-115-183.dialin.kamp-dsl.de) (213.146.115.183) by dsl-mail.kamp.net with SMTP; 9 May 2003 22:36:58 -0000 From: Farid Hajji To: kientzle@acm.org Date: Sat, 10 May 2003 00:37:30 +0200 User-Agent: KMail/1.5.1 References: <200305092054.32885.me@farid-hajji.de> <3EBC010C.8070409@acm.org> In-Reply-To: <3EBC010C.8070409@acm.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200305100037.30834.me@farid-hajji.de> cc: freebsd-current@freebsd.org Subject: Re: Lockups with dump(8) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: me@farid-hajji.de List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 May 2003 22:37:01 -0000 > > ad0: READ command timeout tag=0 serv=0 - resetting > > ata0: resetting devices .. > I had a similar problem with a -STABLE system > that I tracked down to two problems: > * Long 40-wire disk drive cable. > Shorter or 80-wire cable is more reliable Using only short 80-wire cables in all configs so far. > * Mis-jumpered hard disk. I had the > drive jumpered as "master _with_ slave", > even though there was no slave on that > cable. Different hard disks handle this > in different ways. Nope, the drives are jumpered master (without slave). I'm puzzled, because everything else works without any problems. dump(8) with snapshots seems to be an excellent torture test. > Once I fixed the jumpering and swapped in > a better hard disk cable, the problems went > away. I suspect a hardware error too. The kernel doesn't hang since ping works; switching consoles is not possible, perhaps because that may require a disk access, therefore blocking. Hmmm... I'll try again with other cables. > Tim Kientzle Many thanks, -Farid. -- Farid Hajji -- Unix Systems and Network Management. http://www.farid-hajji.net/address.html Quoth the Raven, "Nevermore." --Edgar Allan Poe.