[gpfsug-discuss] Lroc on NVME

Truong Vu truongv at us.ibm.com
Tue Jun 12 14:53:15 BST 2018


Yes, older versions of GPFS don't recognize /dev/nvme*.  So you would
need /var/mmfs/etc/nsddevices user exit.  On newer GPFS versions, the nvme
devices are also generic.  So, it is good that you are using the same NSD
sub-type.

Cheers,
Tru.



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Date:	06/12/2018 06:47 AM
Subject:	gpfsug-discuss Digest, Vol 77, Issue 15
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Today's Topics:

   1. Re: RHEL updated to 7.5 instead of 7.4 (Felipe Knop)
   2. Re: RHEL updated to 7.5 instead of 7.4 (Jeffrey R. Lang)
   3. Lroc on NVME (Peter Childs)


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

Message: 1
Date: Mon, 11 Jun 2018 09:52:16 -0400
From: "Felipe Knop" <knop at us.ibm.com>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4
Message-ID:

<OFE6ED5366.7E225BA2-ON002582A9.004C0F93-852582A9.004C327D at notes.na.collabserv.com>


Content-Type: text/plain; charset="utf-8"

Fred,

Correct. The FAQ should be updated shortly.

  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:		 "Frederick Stock" <stockf at us.ibm.com>
To:		 gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:		 06/11/2018 07:52 AM
Subject:		 Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4
Sent by:		 gpfsug-discuss-bounces at spectrumscale.org



Spectrum Scale 4.2.3.9 does support RHEL 7.5.

Fred
__________________________________________________
Fred Stock | IBM Pittsburgh Lab | 720-430-8821
stockf at us.ibm.com



From:        "Sobey, Richard A" <r.sobey at imperial.ac.uk>
To:        gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:        06/11/2018 06:59 AM
Subject:        Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4
Sent by:        gpfsug-discuss-bounces at spectrumscale.org



Thanks Simon. Do you mean you pinned the minor release to 7.X but yum
upgraded you to 7.Y? This has just happened to me:

[root@ ~]# subscription-manager release
Release: 7.4
[root@ ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.5 (Maipo)

Granted I didn?t issue a yum clean all after changing the release however
I?ve never seen this happen before.

Anyway, I need to either downgrade back to 7.4 or upgrade GPFS, whichever
will be the best supported. I need to learn to pay attention to what kernel
version I?m being updated to in future!

Cheers
Richard

From: gpfsug-discuss-bounces at spectrumscale.org
<gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of Simon Thompson (IT
Research Support)
Sent: 11 June 2018 11:50
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4

We have on our DSS-G ?

Have you looked at:
https://access.redhat.com/solutions/238533


?

Simon

From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of "Sobey,
Richard A" <r.sobey at imperial.ac.uk>
Reply-To: "gpfsug-discuss at spectrumscale.org" <
gpfsug-discuss at spectrumscale.org>
Date: Monday, 11 June 2018 at 11:46
To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>
Subject: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4

Has anyone ever used subscription-manager to set a release to 7.4 only for
the system to upgrade to 7.5 anyway?

Also is 7.5 now supported with the 4.2.3.9 PTF or should I concentrate on
downgrading back to 7.4?

Richard_______________________________________________
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Message: 2
Date: Mon, 11 Jun 2018 15:01:48 +0000
From: "Jeffrey R. Lang" <JRLang at uwyo.edu>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4
Message-ID:

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Yes, I recently had this happen.

It was determined that the caches had been updated to the 7.5 packages,
before I set the release to 7.4/   Since I didn't clear and delete the
cache it used what it had and did the update to 7.5.

So always clear and remove the cache before an update.

Jeff

From: gpfsug-discuss-bounces at spectrumscale.org
<gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of Sobey, Richard A
Sent: Monday, June 11, 2018 5:46 AM
To: 'gpfsug-discuss at spectrumscale.org' <gpfsug-discuss at spectrumscale.org>
Subject: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4

Has anyone ever used subscription-manager to set a release to 7.4 only for
the system to upgrade to 7.5 anyway?

Also is 7.5 now supported with the 4.2.3.9 PTF or should I concentrate on
downgrading back to 7.4?

Richard
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Message: 3
Date: Tue, 12 Jun 2018 10:42:32 +0000
From: Peter Childs <p.childs at qmul.ac.uk>
To: "gpfsug-discuss at gpfsug.org" <gpfsug-discuss at gpfsug.org>
Subject: [gpfsug-discuss] Lroc on NVME
Message-ID:
		 <687c534347c7e02365cb3c5de4532a60f8a296fb.camel at qmul.ac.uk>
Content-Type: text/plain; charset="utf-8"

We have a new computer, which has an nvme drive that is appearing as
/dev/nvme0 and we'd like to put lroc on /dev/nvme0p1p1. which is a
partition on the drive.

After doing the standard mmcrnsd to set it up Spectrum Scale fails to
see it.

I've added a script /var/mmfs/etc/nsddevices so that gpfs scans them,
and it does work now. What "type" should I set the nvme drives too?
I've currently set it to "generic"

I want to do some tidying of my script, but has anyone else tried to
get lroc running on nvme and how well does it work.

We're running CentOs 7.4 and Spectrum Scale 4.2.3-8 currently.

Thanks in advance.




--
Peter Childs
ITS Research Storage
Queen Mary, University of London

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