Quota deadlocks.

Oliver Brandmueller ob at e-Gitt.NET
Wed Feb 1 04:34:30 PST 2006


On Wed, Feb 01, 2006 at 03:36:19AM -0800, Jeff Roberson wrote:
> I'm not able to reproduce the quota deadlocks that were reported.  Can 
> anyone reproduce them on 7.0?  I need more specific instructions on how to 
> reproduce, or more detailed debugging info from someone who can.  If you 
> can reproduce, please add 'options DEBUG_LOCKS' to your kernel.  Then get 
> me the output of 'alltrace' 'ps' and 'show lockedvnods' from ddb.  I'll 
> also need the output of 'mount' and a good description of what triggered 
> the issue.  I hope to resolve this before 6.1.

I have no chance to test on 7 and currently try to avoid crashing our 
NFS server. I have good reasons to believe, that the problem also occurs 
on UP machines (see my postings in Reply to Henri Hennebert (Re: 
6.0-RELEASE freeze repetitively). Unfortunately, the server has no 
DEBUG_LOCKS turned on :-/

I cannot see any load problem or any cronjob making traffic. Close to 
the time of the crash I see an ftp user on one of our app servers, that 
might have reached his quota (rquotad, NFS), though I cannot tell for 
sure. And also it's unlikely that this is the only time someone reached 
his quota.

If there's apart from what I posted something I could look up in the 
dump, then please tell me.

Thanx for looking into this,


| Oliver Brandmueller | Offenbacher Str. 1  | Germany       D-14197 Berlin |
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