[gpfsug-discuss] Spectrum Scale Cygwin cmd delays

Roger Moye rmoye at quantlab.com
Tue Jan 22 15:43:26 GMT 2019


We experienced the same issue and were advised not to use Windows for quorum nodes.   We moved our Windows nodes into the storage cluster which was entirely Linux and that solved it.   If this is not an option, perhaps adding some Linux nodes to your remote cluster as quorum nodes would help.

-Roger


From: gpfsug-discuss-bounces at spectrumscale.org [mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of IBM Spectrum Scale
Sent: Monday, January 21, 2019 5:35 PM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] Spectrum Scale Cygwin cmd delays

Hello Renar,

A few things to try:

  1.  Make sure IPv6 is disabled. On each Windows node, run "mmcmi  host  <hostname>", with <hostname> being itself and each and every node in the cluster. Make sure mmcmi prints valid IPv4 address.

  1.  To eliminate DNS issues, try adding IPv4 entries for each cluster node in "c:\windows\system32\drivers\etc\hosts".

  1.  If any anti-virus is active, disable realtime scanning on c:\cygwin64  (wherever you installed cygwin 64-bit).

You can also try debugging a script, say: (from GPFS ksh):  DEBUG=1  mmlscluster, and see what takes time.

Regards, The Spectrum Scale (GPFS) team

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From:        "Grunenberg, Renar" <Renar.Grunenberg at huk-coburg.de<mailto:Renar.Grunenberg at huk-coburg.de>>
To:        "'gpfsug-discuss at spectrumscale.org'" <gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>>
Date:        01/21/2019 08:01 AM
Subject:        [gpfsug-discuss] Spectrum Scale Cygwin cmd delays
Sent by:        gpfsug-discuss-bounces at spectrumscale.org<mailto:gpfsug-discuss-bounces at spectrumscale.org>
________________________________


Hello All,

We test spectrum scale on an windows only Client-Cluster (remote mounted to a linux Cluster) but

the execution of mm commands in cygwin is very slow.

We have tried the following adjustments to increase the execution speed.



  *   We have installed Cygwin Server as a service (cygserver-config). Unfortunately, this resulted in no faster execution.
  *   Adaptation of the hosts file: 127.0.0.1localhost cygdrive wpad
to prevent any DNS problems when accessing "/cygdrive/..."
  *   Started them as Administrator


All adjustments have so far not led to any improvement. Are there any hints to enhance the cmd execution time on windows (w2k12 actual used)



Regards Renar



Renar Grunenberg
Abteilung Informatik - Betrieb

HUK-COBURG
Bahnhofsplatz
96444 Coburg
Telefon:

09561 96-44110

Telefax:

09561 96-44104

E-Mail:

Renar.Grunenberg at huk-coburg.de<mailto:Renar.Grunenberg at huk-coburg.de>

Internet:

www.huk.de


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