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To: Heikki Suonsivu <hsu@clinet.fi>
cc: FreeBSD-gnats@freefall.freebsd.org, freebsd-bugs@freefall.freebsd.org
Subject: Re: kern/1698: sup from around 21:51 GMT 28th very unstable 
 (mmap, maybe?)
In-reply-to: Your message of "Tue, 22 Oct 1996 08:16:04 +0300."
             <199610220516.IAA00811@katiska.clinet.fi> 
Date: Tue, 22 Oct 1996 14:43:23 +0800
From: Peter Wemm <peter@spinner.DIALix.COM>
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Heikki Suonsivu wrote:
> 
> Heikki Suonsivu writes:
>  > FreeBSD-gnats@freefall.freebsd.org writes:
>  >  > Thank you very much for your problem report.
>  >  > It has the internal identification `kern/1698'.
>  >  > The individual assigned to look at your
>  >  > bug is: freebsd-bugs. 
>  >  > 
>  >  > >Category:       kern
>  >  > >Responsible:    freebsd-bugs
>  >  > >Synopsis:       sup from around 21:51 GMT 28th very unstable (mmap, ma
    ybe?)
>  >  > >Arrival-Date:   Mon Sep 30 21:10:01 PDT 1996
>  > 
>  > Crashes without mmap also; apparently the problem has to be somewhere else
    .
> 
> sup from 20th october still bad, panic within 24 hours (news+nfs),
> filesystems get badly corrupted (lots of dup/bad inodes, zero-length director
    y,
> usually sequential inodes get killed).

Are you using a 4K blocksize on your news file system by any chance?  I've 
been having corruption problems like this for 12 months now, and changing 
to 8K blocks seems to have cured it..  (at least, the machine has been up 
for 7 days now, previous record was 3 and a half days).  The disk 
overheads are a killer though... :-(

>  > Heikki Suonsivu, T{ysikuu 10 C 83/02210 Espoo/FINLAND, hsu@clinet.fi
>  > mobile +358-40-5519679 work +358-0-43542270 fax -4555276 home -8031121

Cheers,
-Peter