Re: rpciod/1: page allocation failure. order:2, mode:0x20'

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On Thu, Jul 10, 2014 at 4:01 PM, Adamson, Andy
<William.Adamson@xxxxxxxxxx> wrote:
> Hi
>
> A customer of ours, running a 2.6.32-431.5.1.el6.x86_64 kernel NFS client, is hittng the "rpciod/1: page allocation failure. order:2, mode:0x20", but only with NFSv3 hard mounts (not soft mounts), and not with NFSv4 (same application, same client hardware). Has anyone hit this issue with RHEL6.5?  Any ideas on why NFSv3 would trigger this error and not NFSv4?
>
> I see in Red Hat Bugzilla 767127 - swapper: page allocation failure. order:1, mode:0x20 (edit) that a similar issue was solved by setting vm.zone_reclaim_mode = 1 which used to be the default.  Adjusting the vm.min_free_kbytes higher may also help.  Any side effects or issues with these settings?
>
> Any info appreciated

Where are we doing an order 2 allocation in the NFS/RPC code? Our aim
has always been to do nothing larger than an order 0 allocation.

-- 
Trond Myklebust

Linux NFS client maintainer, PrimaryData

trond.myklebust@xxxxxxxxxxxxxxx
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