[gpfsug-discuss] NSD V2 vs V1 - how can you tell?

[Felipe Knop]

Bob,

I believe the NSD format version (v1 vs v2) is shown in the " format 
version" line that starts with "NSDid" :


# mmfsadm test readdescraw /dev/dm-11
NSD descriptor in sector 64 of /dev/dm-11
    NSDid: 9461C0A85788693A  format version: 1403 Label:

It should say "1403" when the format is v2.


  Felipe

----
Felipe Knop                                     knop at us.ibm.com
GPFS Development and Security
IBM Systems
IBM Building 008
2455 South Rd, Poughkeepsie, NY 12601
(845) 433-9314  T/L 293-9314





From:   "Oesterlin, Robert" <Robert.Oesterlin at nuance.com>
To:     gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:   07/28/2017 07:47 AM
Subject:        Re: [gpfsug-discuss] NSD V2 vs V1 - how can you tell?
Sent by:        gpfsug-discuss-bounces at spectrumscale.org



Hi Scott
 
This refers to the file system format which is independent of the NSD 
version number. File systems can be upgraded but all the NSDs are still at 
V1. For instance, here is an NSD I know is still V1:
 
[root at gpfs2-gpfs01 ~]# grep msa0319VOL2 volmaps
msa0319VOL2   mpathel   (3600c0ff0001497e259ebac5001000000) dm-19     14T 
sdad  0[active][ready] sdft  1[active][ready] sdam  2[active][ready] sdgc 
3[active][ready]
[root at gpfs2-gpfs01 ~]# mmfsadm test readdescraw /dev/dm-19 | grep " 
original format"
    original format version 1001, cur version 1600 (mgr 1600, helper 1600, 
mnode 1600)
 
The file system version is current however.
 
Bob Oesterlin
Sr Principal Storage Engineer, Nuance

 
 
 
From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of Scott Fadden 
<sfadden at us.ibm.com>
Reply-To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: Thursday, July 27, 2017 at 3:33 PM
To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>
Cc: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>
Subject: [EXTERNAL] Re: [gpfsug-discuss] NSD V2 vs V1 - how can you tell?
 
# mmfsadm test readdescraw /dev/dm-14 | grep " original format"
    original format version 1600, cur version 1700 (mgr 1700, helper 1700, 
mnode 1700)
 
The harder part is what version number = v2 and what matches version 1. 
The real answer is there is not a simple one, it is not really v1 vs v2 it 
is what feature you are interested in. Just one small example
 
4K Disk SECTOR support started in 1403
Dynamically enabling quotas started in 1404
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