From owner-freebsd-current Wed Sep 6 14:08:56 1995 Return-Path: current-owner Received: (from majordom@localhost) by freefall.freebsd.org (8.6.11/8.6.6) id OAA23387 for current-outgoing; Wed, 6 Sep 1995 14:08:56 -0700 Received: from mpp.minn.net (mpp.Minn.Net [204.157.201.242]) by freefall.freebsd.org (8.6.11/8.6.6) with ESMTP id OAA23379 for ; Wed, 6 Sep 1995 14:08:53 -0700 Received: (from mpp@localhost) by mpp.minn.net (8.6.11/8.6.9) id QAA00250 for freebsd-current@freebsd.org; Wed, 6 Sep 1995 16:08:58 -0500 From: Mike Pritchard Message-Id: <199509062108.QAA00250@mpp.minn.net> Subject: Re: Superblocks getting trashed with -current To: freebsd-current@freebsd.org Date: Wed, 6 Sep 1995 16:08:58 -0500 (CDT) In-Reply-To: <199509050140.UAA00234@mpp.minn.net> from "Mike Pritchard" at Sep 4, 95 08:40:06 pm X-Mailer: ELM [version 2.4 PL24 ME7a] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1161 Sender: current-owner@freebsd.org Precedence: bulk I just had my root file system superblock trashed again. I haven't had any msdos stuff mounted for several days now, either. I needed to reboot so I could run dos for a minute, so I shutdown to single user mode, unmounted everything, then ran fsck to verify that all of my superblocks were still good. Everything was fine, so I rebooted and started dos for about 5 minutes, then I tried to reboot FreeBSD. My root superblock was trashed again at this point. No, it wasn't DOS, since the other times it happened, DOS never entered the picture. A quick look showed that most of the superblock was zeroed out (maybe the first 1024 bytes). I've got to go install some hardware for a customer right now, but I'll verify exactly how much data was munged when I get home later, and see if I can figure out what the few non-zero bytes might have been. BTW, fsck core dumped on me with this superblock - floating point exception. Probably doing some divide by zero with the bad data. I had to use the "-b" option to tell it where to find a good superblock. -- Mike Pritchard mpp@mpp.minn.net "Go that way. Really fast. If something gets in your way, turn"