[gpfsug-discuss] gpfs and device number

[Tomer Perry]

Hi,

Please use the fsid option in /etc/exports ( man exports and: 
https://www.ibm.com/support/knowledgecenter/en/STXKQY_5.0.3/com.ibm.spectrum.scale.v5r03.doc/bl1adm_nfslin.htm 
)
Also check 
https://www.ibm.com/support/knowledgecenter/en/STXKQY_5.0.3/com.ibm.spectrum.scale.v5r03.doc/bl1adv_cnfs.htm 
 in case you want HA with kernel NFS.



Regards,

Tomer Perry
Scalable I/O Development (Spectrum Scale)
email: tomp at il.ibm.com
1 Azrieli Center, Tel Aviv 67021, Israel
Global Tel:    +1 720 3422758
Israel Tel:      +972 3 9188625
Mobile:         +972 52 2554625




From:   Lukas Hejtmanek <xhejtman at ics.muni.cz>
To:     gpfsug-discuss at spectrumscale.org
Date:   26/04/2019 15:37
Subject:        [gpfsug-discuss] gpfs and device number
Sent by:        gpfsug-discuss-bounces at spectrumscale.org



Hello,

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

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

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

[root at 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?

-- 
Luká? Hejtmánek

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