[gpfsug-discuss] GPFS 4.2.3-9 and RHEL 7.5

[David D Johnson]

So first, apologies for hijacking the thread, but this is a hot issue as we are planning 4.2.x to 5.x.y upgrade
in the unspecified future, and are currently running CNFS and clustered CIFS.  Those exporter nodes
are in need of replacement, and I am unsure of the future status of CNFS and CIFS (are they even in 5.x?).
Is there a way to roll out protocols while still offering CNFS/Clustered CIFS, and cut over when it's ready for prime time?  

> On Jun 13, 2018, at 6:32 AM, Tomer Perry <TOMP at il.ibm.com> wrote:
> 
> Hi,
> 
> :-) I explicitly used the term "same environment".
> 
> The simple answer would be NO, but:
> While the code will only enforce not configuring CES and CNFS on the same cluster - it wouldn't know to do that between clusters - so I don't believe anything will prevent you from configuring it.
> That said, there might be implications on recovery that might lead to data corruption ( imagine two systems that don't know about the other locks for the reclaim process).
> 
> 
> 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:        david_johnson at brown.edu
> To:        gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
> Date:        13/06/2018 13:13
> Subject:        Re: [gpfsug-discuss] GPFS 4.2.3-9 and RHEL 7.5
> Sent by:        gpfsug-discuss-bounces at spectrumscale.org
> 
> 
> 
> Could you expand on what is meant by “same environment”?  Can I export the same fs in one cluster from cnfs nodes (ie NSD cluster with no root squash) and also export the same fs in another cluster (client cluster with root squash) using Ganesha?
> 
>   -- ddj
> Dave Johnson
> 
> On Jun 13, 2018, at 5:48 AM, Tomer Perry <TOMP at il.ibm.com <mailto:TOMP at il.ibm.com>> 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 <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.
> 
> 
> Regards,
> 
> Tomer Perry
> Scalable I/O Development (Spectrum Scale)
> email: tomp at il.ibm.com <mailto: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:        Jonathan Buzzard <jonathan.buzzard at strath.ac.uk <mailto:jonathan.buzzard at strath.ac.uk>>
> To:        gpfsug main discussion list <gpfsug-discuss at spectrumscale.org <mailto:gpfsug-discuss at spectrumscale.org>>
> Date:        13/06/2018 12:38
> Subject:        Re: [gpfsug-discuss] GPFS 4.2.3-9 and RHEL 7.5
> Sent by:        gpfsug-discuss-bounces at spectrumscale.org <mailto:gpfsug-discuss-bounces at spectrumscale.org>
> 
> 
> 
> On Wed, 2018-06-13 at 09:33 +0000, Sobey, Richard A wrote:
> > 4.2.3.9 is supported on RHEL 7.5, the FAQ has not been updated yet
> > however.
> > 
> 
> Then we are down to kernel NFS not been supported then?
> 
> 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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