Re: Possible race in the filesystem code (softupdates) ?

From: Garance A Drosihn <drosih_at_rpi.edu>
Date: Sun, 4 Apr 2004 17:20:15 -0400
At 10:55 PM +0200 4/4/04, Martin Blapp wrote:
>Hi,
>
>During testing I found that the following procedure is pretty
>dangerous and leads sometimes to a panic():

For the times when it does not cause a panic, does it cause any
other problems?  Ie, would it be better to say "procedure is
pretty dangerous *because* it sometimes causes a panic"?  Or
is there some other problem in addition to the possible panic?

>I'm trying to reproduce it tomorrow for a useful dump. I had it
>happen twice but was not able to take any notices because it
>happenend on a productive server.  I can exclude any hardware
>problems. We use current from a week ago.

What kind of hardware are you doing this on?  Is it multi-CPU?
Does it have a lot of RAM?  (I am just curious...)

Once you have a dump, you might want to include
Kirk McKusick <mckusick_at_beastie.mckusick.com>
on a message with a pointer to the dump.  I don't know how
often he reads freebsd-current.

-- 
Garance Alistair Drosehn            =   gad_at_gilead.netel.rpi.edu
Senior Systems Programmer           or  gad_at_freebsd.org
Rensselaer Polytechnic Institute    or  drosih_at_rpi.edu
Received on Sun Apr 04 2004 - 12:20:21 UTC

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