[gpfsug-discuss] pmcollector and NSD perf

Tue Dec 19 15:23:55 GMT 2017

Hello Mark,

the NSD sensor is GPFSNSDDisk.

Some things to check:

1. Is the sensor activated?
In a GPFS managed sensor config you should be able to see something like
this when you call mmperfmon config show:

{
        name = "GPFSNSDDisk"
        period = 10
        restrict = "nsdNodes"
},

2. Perfmon designation
The NSD server nodes should have the perfmon designation.

[root at cache-41 ~]# mmlscluster

GPFS cluster information
========================
  GPFS cluster name:         gpfsgui-cluster-4.localnet.com
  GPFS cluster id:           10583479681538672379
  GPFS UID domain:           localnet.com
  Remote shell command:      /usr/bin/ssh
  Remote file copy command:  /usr/bin/scp
  Repository type:           CCR

 Node  Daemon node name       IP address   Admin node name
Designation
------------------------------------------------------------------------------
   1   cache-41.localnet.com  10.0.100.41  cache-41.localnet.com
quorum-perfmon
   2   cache-42.localnet.com  10.0.100.42  cache-42.localnet.com
quorum-gateway-perfmon
   3   cache-43.localnet.com  10.0.100.43  cache-43.localnet.com
gateway-perfmon

3. Direct Disk writes?
One reason why there may be no data on your system is if you are not using
the NSD protocol,
meaning the clients can directly write to disk as in a SAN environment.
In this case the sensor does not catch the transactions.

4. Cross cluster mount
Or maybe you are using a cross cluster mount.

Mit freundlichen Grüßen / Kind regards

Dr. Markus Rohwedder

Spectrum Scale GUI Development

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From:	Mark Bush <Mark.Bush at siriuscom.com>
To:	"gpfsug-discuss at spectrumscale.org"
            <gpfsug-discuss at spectrumscale.org>
Date:	12/19/2017 03:30 PM
Subject:	[gpfsug-discuss] pmcollector and NSD perf
Sent by:	gpfsug-discuss-bounces at spectrumscale.org

I’ve noticed this in my test cluster both in 4.2.3.4 and 5.0.0.0 that in
the GUI on the monitoring screen with the default view the NSD Server
Throughput graph shows “Performance Collector did not return any data”.
I’ve seen that in other items (SMB before for example) but never for NSD.
Is there something that must be enabled in the zimon sensor or collector
config file to grab this or is this a bug?

Mark_______________________________________________
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