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Article View: comp.sys.sgi.bugs
Article #94

Re: Unbelievable bug that didn't happen

#94
From: Andy Poling
Date: Tue, 26 Jan 1993 20:42
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In article <1jnlejINNp5m@fido.asd.sgi.com> pj@sgi.com writes:
>In article <1jneleINN2tb@jhunix2.hcf.jhu.edu>, andy@jhunix2.hcf.jhu.edu (Andy Poling) writes:
>|> While I was tracking this bug down, it happened -- I may have even made it
>|> happen - I dunno.  The problem is this: even though the mtab file had been
>|> scribbled in since I had last fixed it, the modification time of the file
>|> had not changed!!!
>
>Looks to me like your mtab and /etc/wtmp files are cohabitating.  That
>is, they are both using a particular block of the file system.
>
>I'd suggest you go into single user mode and fsck /.  Expect some
>things such as DUP blocks.

Paul takes the prize.  Each of the copies of the scribbled mtab that I had
saved for posterity showed up as BAD/DUP in phase 1 of the fsck.

Of course, how they got that way in the first place is a mystery since I
kept creating new mtab files which kept having this happen to them.

Thanks Paul!

-Andy

Andy Poling                              Internet: andy@jhunix.hcf.jhu.edu
UNIX Systems Programmer                  Bitnet: ANDY@JHUNIX
Homewood Academic Computing              Voice: (410)516-8096    
Johns Hopkins University                 UUCP: uunet!mimsy!aplcen!jhunix!andy
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From: andy@jhunix2.hcf.jhu.edu (Andy Poling)
Newsgroups: comp.sys.sgi.bugs
Subject: Re: Unbelievable bug that didn't happen
Followup-To: comp.sys.sgi.bugs
Date: 26 Jan 1993 15:42:58 -0500
Organization: Homewood Academic Computing, Johns Hopkins University, Baltimore, Md, USA
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Summary: we have a winner!
Keywords: oh boy...