diskio / filesystem related deadlock on SMP 6.0-STABLE machine.

[Kris Kennaway]

On Thu, Jan 26, 2006 at 10:54:04PM +0200, Niki Denev wrote:
> Kris Kennaway wrote:
> > On Thu, Jan 26, 2006 at 05:07:56PM +0200, Niki Denev wrote:
> >> On Thursday 26 January 2006 10:40, Niki Denev wrote:
> >> [...]
> >>
> >> After i disabled option QUOTA in both my default kernel config
> >> and the one i compiled with the debugging options i was unable
> >> to reproduce the deadlock again. (i hope it stays that way :) )
> >> This, together with the report in my previous post probably point
> >> that the problem is in the QUOTA support.
> > 
> > Actually, I think this is known.
> > 
> > Kris
> 
> Yes, sorry for this.

No problem.  At least your cause is identified, so you know what to
look out for.

> I found a thread on -hackers from November 2005 which seems related:
> http://lists.freebsd.org/pipermail/freebsd-hackers/2005-November/014339.html
> 
> Anyway, the machine in question is still not very actively used and
> i can use it as a guinea pig if someone has the time to look at this,
> if not, maybe it should be noted somewhere that at this point "options QUOTA"
> may cause deadlocks to avoid similar questions/postings? :)

I have recommended this be tracked on the 6.1 TODO list - hopefully
there will be a solution before the release.

Kris

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