Hello,

I noticed that from time to time, device id of a gpfs volume is not same
across whole gpfs cluster.

[root@kat1 ~]# stat /gpfs/vol1/
  File: ‘/gpfs/vol1/’
  Size: 262144          Blocks: 512        IO Block: 262144 directory
Device: 28h/40d Inode: 3 

[root@kat2 ~]# stat /gpfs/vol1/
  File: ‘/gpfs/vol1/’
  Size: 262144          Blocks: 512        IO Block: 262144 directory
Device: 2bh/43d Inode: 3 

[root@kat3 ~]#  stat /gpfs/vol1/
  File: ‘/gpfs/vol1/’
  Size: 262144          Blocks: 512        IO Block: 262144 directory
Device: 2ah/42d Inode: 3

this is really bad for kernel NFS as it uses device id for file handles thus
NFS failover leads to nfs stale handle error. 

Is there a way to force a device number?

-- 
Lukáš Hejtmánek

Linux Administrator only because
  Full Time Multitasking Ninja 
  is not an official job title
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