[Beowulf] Transient NFS Problems in New Cluster

Prentice Bisbal prentice at ias.edu
Wed Feb 3 10:27:35 EST 2010


Joe Landman wrote:
> Jon Forrest wrote:
>> I have a new cluster running CentOS 5.3.
>> The cluster uses a Sun 7310 storage server
>> that provides NFS service over a private
>> 1Gb/s ethernet with 9K jumbo frames to the
>> cluster.
>>
>> We've noticed that a number of the compute
>> nodes sometimes generate the
>>
>> automount[15023]: umount_autofs_indirect: ask umount returned busy /home
> 
> [...]
> 
>> Any advice on what to do?
> 
> We still recommend turning off autofs for home directories.  We've seen
> lots of problems with it on many clusters.  Hard mounts are IMO better.
>  That server should be able to handle it.
> 

How do you handle situations where home directories are spread across
multiple servers? Do have a large /etc/fstab on ever NFS client?

--
Prentice
_______________________________________________
Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf



More information about the Beowulf mailing list