linux-kernel - Re: 2.6.32.21 - uptime related crashes?

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Message-ID: <20110516064949.GA6000@noc.grnet.gr>
Date:	Mon, 16 May 2011 09:49:49 +0300
From:	Apollon Oikonomopoulos <apoikos@...il.com>
To:	Faidon Liambotis <paravoid@...ian.org>
Cc:	Nikola Ciprich <nikola.ciprich@...uxbox.cz>,
	Willy Tarreau <w@....eu>, linux-kernel@...r.kernel.org,
	stable@...nel.org, seto.hidetoshi@...fujitsu.com,
	Hervé Commowick <hcommowick@...sec.fr>,
	Randy Dunlap <rdunlap@...otime.net>, Greg KH <greg@...ah.com>,
	Ben Hutchings <ben@...adent.org.uk>, chronidev@...il.com
Subject: Re: 2.6.32.21 - uptime related crashes?

Hello all,

On 01:56 Mon 16 May     , Faidon Liambotis wrote:
> > and Peter Zijlstra asked there, whether reporters systems were running
> > some RT tasks. Then I realised that all of my four crashed boxes were
> > pacemaker/corosync clusters and pacemaker uses lots of RT priority
> > tasks. So I believe this is important, and might be reason why other
> > machines seem to be running rock solid - they are not running any RT
> > tasks.  It also might help with hunting this bug. Is somebody of You
> > also running some RT priority tasks on inflicted systems, or problem
> > also occured without it?
> 
> No, no RT tasks here. The boxes in my case were just running a lot of
> kvm processes.

Actually we are running multipathd, which is an RT process and heavily loaded
on these particular systems.

Regards,
Apollon
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