[DRBD-user] Page allocation errors and kernel panics with drbd 8.3.3rc1 and infiniband

Lars Ellenberg lars.ellenberg at linbit.com
Mon Oct 5 10:41:23 CEST 2009


On Sun, Oct 04, 2009 at 10:14:22PM +0200, Lars Ellenberg wrote:
> On Sun, Oct 04, 2009 at 03:55:44AM -0400, Gennadiy Nerubayev wrote:
> > On Tue, Sep 22, 2009 at 5:01 PM, Jason McKay <jmckay at logicworks.net> wrote:
> > 
> > > On Sep 22, 2009, at 4:34 PM, Lars Ellenberg wrote:
> > >
> > > > But correcting the tcp_mem setting above
> > > > is more likely to fix your symptoms.
> > >
> > > I suspect it will.  We'll test and follow up.
> > >
> > 
> > Hi guys,
> > 
> > Unfortunately these are still occurring, even after we've updated to rc3,
> > and used the tuning settings from rc3 notes (prior to this % of memory in
> > pages were attempted with same results). They are a lot less frequent
> > (intervals measured in hours), and have not yet caused a panic, but of
> > course the worry is that it may happen regardless. Anything else that we
> > could try here to eliminate it completely? Is there any chance that the
> > ipoib stack is at fault?
> 
> Possibly.
> Maybe Vlad knows more?
>  From http://www.openfabrics.org/txt/documentation/linux/EWG_meeting_minutes/12_01_08.txt:
> 1419 	maj 	vlad at mellanox 	Iperf-2.0.4 fails: page allocation failure. order:5
> I guess that means https://bugs.openfabrics.org/show_bug.cgi?id=1419
> Not much progress on that bug, though.

This appears related, as well:
http://bugzilla.kernel.org/show_bug.cgi?id=10890

Though there it was claimed that leaving network sysctls at the defaults
"solved" the issue.

-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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