4.10-PRERELEASE panic in FFS

[Kris Kennaway]

On Sun, May 02, 2004 at 12:28:21PM +0100, Scott Mitchell wrote:
> Hi all,
> 
> My -STABLE machine blew up last night, about 3 hours into compiling
> OpenOffice.  I wasn't awake at the time, so I don't know exactly what
> happened other than that I came in this morning to find a rebooted machine
> and a crash dump.  It happened around 2am - there might have been a mail
> synchronisation going on at the same time, but nothing much else.
> 
> >From the comments in ffs_alloc.c it seems that there were no free blocks
> anywhere in a particular cylinder group, although there presumably should
> have been.  I don't know enough about FFS to know if this is really a bug,
> or a sign of some corruption in my filesystem that I should attend to.
> 
> The same machine locked up a couple of times last weekend - one when
> compiling some part of KDE, then when encoding some MP3s.  No panic for
> either of these, just a hard lock.  We were having a micro-heatwave here
> that weekend so I figured it was a cooling problem I should look at before
> the summer really got going.

This really should make you suspicious.  I've often had filesystem
panics that were caused by overheated disks.

Kris
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