From: James A. Peltier <jpeltier@xxxxxx>
> On a busy NFS server I've started receiving the following error messages and
> the system hangs with high load but no work being done. The system is a Dell
> R510 with 12 x 3TB drives in a RAID-50 configuration. The RAID-50 device is a
> full disk LVM (no partitions) and one large (36TB) data volume and the system is
> running CentOS 6.4 fully patched for OS and firmware.
>
> Anyone have any hints as to what might be causing this. It looks to me like the
> system is starting to swap and then failing and then XFS starts to throw a hissy
> fit because it can't start allocating pages for it's buffers.
> Eventually then the system just deadlocks. I'm just looking for someone to
> confirm my findings and let me know if this is a bug or not.
>
> I've posted the dmesg output onto pastebin http://pastebin.com/YQbhsN6a
>
> Any help is very much appreciated!
Google seems to suggest to maybe perhaps look at:
sysctl vm.min_free_kbytes
JD
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