[gpfsug-discuss] GPFS 4.2.3-9 and RHEL 7.5 (Wilson, Neil)

[Brunet Pierre-Marie]

Hi, 

We are facing the same issue : we just upgrade our cluster to GPFS 4.2.3-9 and RHEL 7.5 with 4 gateways servers executing Kernel NFS...
=> random "Unknown error 521" on NFS clients.

Thanks to this thread we decided to downgrade to RHEL 7.4 and (fingers crossed !) up to now, it seems to work properly.

Is there any official recommendation from IBM on this problem ?

Regards, 
PM
--
HPC center
French space agency 

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Today's Topics:

   1. Re: GPFS 4.2.3-9 and RHEL 7.5 (Tomer Perry)
   2. Re: GPFS 4.2.3-9 and RHEL 7.5 (Wilson, Neil)


----------------------------------------------------------------------

Message: 1
Date: Wed, 13 Jun 2018 17:45:44 +0300
From: "Tomer Perry" <TOMP at il.ibm.com>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] GPFS 4.2.3-9 and RHEL 7.5
Message-ID:
	<OF826A0F69.C86BD2AB-ONC22582AB.0050FE8E-C22582AB.00511712 at notes.na.collabserv.com>
	
Content-Type: text/plain; charset="iso-8859-1"

Please open a service ticket


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 main discussion list <gpfsug-discuss at spectrumscale.org>
Date:   13/06/2018 13:14
Subject:        Re: [gpfsug-discuss] GPFS 4.2.3-9 and RHEL 7.5
Sent by:        gpfsug-discuss-bounces at spectrumscale.org



On Wed, Jun 13, 2018 at 12:48:14PM +0300, Tomer Perry wrote:
> knfs is supported  - with or without the cNFS feature ( cNFS will add 
> HA

> to NFS on top of GPFS -
> 
https://www.ibm.com/support/knowledgecenter/en/STXKQY_5.0.1/com.ibm.spectrum.scale.v5r01.doc/bl1adv_cnfs.htm 

> ).
> 
> knfs and cNFS can't coexist with CES in the same environment.

well, I use knfs and no CNFS n RHEL 7.5 and getting mentioned issues.

--
Luk?? Hejtm?nek

Linux Administrator only because
  Full Time Multitasking Ninja
  is not an official job title
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Message: 2
Date: Wed, 13 Jun 2018 15:14:53 +0000
From: "Wilson, Neil" <neil.wilson at metoffice.gov.uk>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] GPFS 4.2.3-9 and RHEL 7.5
Message-ID:
	<VI1PR01MB3869195DA7652219D5E3C6FDC67E0 at VI1PR01MB3869.eurprd01.prod.exchangelabs.com>
	
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We are running a cNFS on GPFS 4.2.3-9 on 7.4 and kernel version 3.10.0-693.21.1.el7.x86_64 and are not having any errors.
So it's probably just GPFS not being ready for 7.5 yet.

Neil.

Neil Wilson? Senior IT Practitioner
Storage, Virtualisation and Mainframe Team?? IT Services
Met Office FitzRoy Road Exeter Devon EX1 3PB United Kingdom


-----Original Message-----
From: gpfsug-discuss-bounces at spectrumscale.org <gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of Jonathan Buzzard
Sent: 13 June 2018 10:33
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] GPFS 4.2.3-9 and RHEL 7.5

On Wed, 2018-06-13 at 11:10 +0200, Lukas Hejtmanek wrote:
> Hello,
> 
> did anyone encountered an error with RHEL 7.5 kernel 3.10.0-
> 862.3.2.el7.x86_64 and the latest GPFS 4.2.3-9 with kernel NFS?
> 
> I'm getting random errors: Unknown error 521. It means EBADHANDLE.
> Not sure whether it is due to kernel or GPFS.
> 

GPFS being not supported on 7.5 at this time would be the starting point. I am also under the impression that kernel NFS was not supported either it's Ganesha or nothing.

The interim fix is probably to downgrade to a 7.4 kernel. Certainly in the past that has worked for me.

JAB.

--
Jonathan A. Buzzard?????????????????????????Tel: +44141-5483420 HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG


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