[gpfsug-discuss] gpfsug-discuss Digest, Vol 100, Issue 34
Steven Daniels
sadaniel at us.ibm.com
Sat May 30 23:19:28 BST 2020
see below.
Steven A. Daniels
Cross-brand Client Architect
Senior Certified IT Specialist
National Programs
Fax and Voice: 3038101229
sadaniel at us.ibm.com
http://www.ibm.com
(See attached file: opencits-d.jpg)
From: Prasad Surampudi <prasad.surampudi at theatsgroup.com>
To: "gpfsug-discuss at spectrumscale.org"
<gpfsug-discuss at spectrumscale.org>
Date: 05/29/2020 05:55 PM
Subject: [EXTERNAL] Re: [gpfsug-discuss] gpfsug-discuss Digest, Vol 100,
Issue 34
Sent by: gpfsug-discuss-bounces at spectrumscale.org
Steve,
So in essence, if the minReleaseLevel is set to 5.0.x.x for a Spectrum
Scale 5.0 cluster, we can't add any new severs with Spectrum Scale 4.x.x
RPMs installed without upgrading them to Spectrum Scale 5.x.x RPMs to the
cluster. Is this a correct statement?
Steve>>> This statement is true for the local cluster. However, it is
pretty simple to put the 4.2.3-X client nodes(currently 4.2.3.21 is min
officially recommended and only until Sep 2020) in their own access
cluster.
Does mmiportfs also check the filesystem version which it is importing and
prevent it from importing if it is created on Spectrum Scale 4.x.x?
I hope one of the FS experts can correct if wrong, but it would be in my
mind a bug if mmimportfs didn't allow this. I know you can create new
4.2.3-X file systems in a cluster with 5.0.X minReleaseLevel and do that
routinely. So, since the cluster supports lower version levels (actually I
have one filesystem that is a 3.5.0.7 in a cluster that is 5.0.4.2
minReleaseLevel but obviously 3.5.0.7 wouldn't be anywhere near a
recommended filesystm level but it does work fine. NOTE: that the remote
cluster will not authenticate unless at a minReleaseLevel of 4.2.2.X (not a
supported level) so even though the filesystem can be very back level. The
remote accessing cluster has to be no more than one major version back or
ahead.
On 5/29/20, 7:40 PM, "gpfsug-discuss-bounces at spectrumscale.org on behalf of
gpfsug-discuss-request at spectrumscale.org"
<gpfsug-discuss-bounces at spectrumscale.org on behalf of
gpfsug-discuss-request at spectrumscale.org> wrote:
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Today's Topics:
1. Re: gpfsug-discuss Digest, Vol 100, Issue 32 (Steven Daniels)
----------------------------------------------------------------------
Message: 1
Date: Fri, 29 May 2020 17:39:59 -0600
From: "Steven Daniels" <sadaniel at us.ibm.com>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] gpfsug-discuss Digest, Vol 100, Issue 32
Message-ID:
<OF747B9ADF.668598B6-ON00258577.008141DC-87258577.00820130 at notes.na.collabserv.com>
Content-Type: text/plain; charset="iso-8859-1"
Prasad,
One of the clients I work with have several 5.0.X ESS (owning) clusters
and
they share 4.2.3.9 file systems to remote client clusters.
The minimum release level on the 5.0.X clusters are at the version of
the
cluster, i.e. 5.0.3 or 5.0.4 (we are in the process of getting all to
latest).
The key is that the clients are not part of this cluster as a node has
to
be > minReleaseLevel to be able to join.
They are in their own (accessing) cluster which has a minReleaseLevel
of
4.2.3-9. This is the current (until September withdrawal)
minReleaseLevel
that is supported in this scenario.
Don't know specifically about import but it should work as long as the
clients that need to mount the sub-5.0 filesystem can be in a separate
(remote) cluster or the client nodes are upgraded to the
minReleaseLevel of
the local cluster.
Thanks,
Steve
Steven A. Daniels
Cross-brand Client Architect
Senior Certified IT Specialist
National Programs
Fax and Voice: 3038101229
sadaniel at us.ibm.com
http://www.ibm.com
(See attached file: opencits-d.jpg)
From: Prasad Surampudi <prasad.surampudi at theatsgroup.com>
To: "gpfsug-discuss at spectrumscale.org"
<gpfsug-discuss at spectrumscale.org>
Date: 05/29/2020 09:02 AM
Subject: [EXTERNAL] Re: [gpfsug-discuss] gpfsug-discuss
Digest, Vol 100,
Issue 32
Sent by: gpfsug-discuss-bounces at spectrumscale.org
Jim,
The minimum release for 5.0.4 cluster is 5.0.4.3.
We are aware that we can't merge both gpfs_4 and gpfs_5 filesystems.
Our
plan is to import the gpfs_4 filesystem into the Spectrum Scale 5.0
cluster
(with its NSDs mapped to Spectrum Scale 5.0 clusters nodes) and copy
the
data using rsync, across fibre channel instead of ethernet to get
higher
bandwidth.
On 5/29/20, 8:27 AM, "gpfsug-discuss-bounces at spectrumscale.org on
behalf of
gpfsug-discuss-request at spectrumscale.org"
<gpfsug-discuss-bounces at spectrumscale.org on behalf of
gpfsug-discuss-request at spectrumscale.org> wrote:
Send gpfsug-discuss mailing list submissions to
gpfsug-discuss at spectrumscale.org
To subscribe or unsubscribe via the World Wide Web, visit
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or, via email, send a message with subject or body 'help' to
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You can reach the person managing the list at
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When replying, please edit your Subject line so it is more specific
than "Re: Contents of gpfsug-discuss digest..."
Today's Topics:
1. Re: Importing a Spectrum Scale a filesystem from 4.2.3
cluster to 5.0.4.3 cluster (Carl Zetie - carlz at us.ibm.com)
----------------------------------------------------------------------
Message: 1
Date: Fri, 29 May 2020 12:25:46 +0000
From: "Carl Zetie - carlz at us.ibm.com" <carlz at us.ibm.com>
To: "gpfsug-discuss at spectrumscale.org"
<gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] Importing a Spectrum Scale a
filesystem
from 4.2.3 cluster to 5.0.4.3 cluster
Message-ID: <C3494A35-F482-4E3D-B71D-AD7B3D9B02B1 at us.ibm.com>
Content-Type: text/plain; charset="utf-8"
On a non-technical note, I wanted to remind everybody that if
you?re
doing a migration and you need to temporarily run both systems, IBM
licensing allows you to do that without ceremony or formality, for up
to 90
days under a thing called the ?Temporary Additional Use Policy?. You
don?t
need to register, ask beforehand, etc. Just go ahead.
If you need the additional usage for more than 90 days, contact
your
seller and we?ll figure something out.
Regards
Carl Zetie
Program Director
Offering Management
Spectrum Scale
----
(919) 473 3318 ][ Research Triangle Park
carlz at us.ibm.com
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