From owner-freebsd-hackers Mon Nov 4 05:50:38 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id FAA17045 for hackers-outgoing; Mon, 4 Nov 1996 05:50:38 -0800 (PST) Received: from dg-rtp.dg.com (dg-rtp.rtp.dg.com [128.222.1.2]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id FAA17036 for ; Mon, 4 Nov 1996 05:50:33 -0800 (PST) Received: by dg-rtp.dg.com (5.4R3.10/dg-rtp-v02) id AA14387; Mon, 4 Nov 1996 08:50:02 -0500 Received: from ponds by dg-rtp.dg.com.rtp.dg.com; Mon, 4 Nov 1996 08:50 EST Received: from lakes.water.net (lakes [10.0.0.3]) by ponds.water.net (8.7.5/8.7.3) with ESMTP id IAA16931; Mon, 4 Nov 1996 08:37:50 -0500 (EST) Received: (from rivers@localhost) by lakes.water.net (8.7.5/8.6.9) id IAA02674; Mon, 4 Nov 1996 08:38:44 -0500 (EST) Date: Mon, 4 Nov 1996 08:38:44 -0500 (EST) From: Thomas David Rivers Message-Id: <199611041338.IAA02674@lakes.water.net> To: joerg_wunsch@uriah.heep.sax.de, ponds!freefall.cdrom.com!freebsd-hackers Subject: Re: More info on the daily panics... Content-Type: text Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > As Thomas David Rivers wrote: > > > I got another panic today: > > > > ffs_valloc: dup alloc > > Interesting. Remember one of my mails from yesterday: i've got the > same problem when using MFS. Maybe an incident... > > For me, it happened after a previous attempt to dd(1) into a particular > file in MFS suddenly aborted with ``dd: filename: Bad address''. > Trying to dd to the same file again triggered the dup alloc. > Well - it is interesting... Let me tell you about a "theory" of mine - the theory of "bug time." I know this sounds silly, but I have a great deal of empirical evidence that suggests that bugs lie dormant in code; perhaps for dozens of years... then, suddenly; they'll begin manifesting themselves. When you begin investigating the problem - the answer it usually readily found; the developer frequently lameting "This never could have worked!" I think there could be sound psychological reasons for this - such as people not reporting problems, etc.... but I don't have any physical reasons to bring logic to my observations :-) Anyway, following the theory of "bug time" - you should see a few more reports like mine begin to trickle in :-) :-) - Dave Rivers -