[gpfsug-discuss] gpfsug-discuss Digest, Vol 88, Issue 9

[Aaron Turner]

Thanks, Simon, This is what I thought was the case, and in fact I couldn't see it was not. In reality there -are- JBODs involved, so that was a somewhat hypothetical use case initially.

Regards

_______​_______________________________
Aaron Turner
Senior IT Services Specialist in High Performance Computing
Loughborough University
a.turner at lboro.ac.uk
01509 226185
______________________________________


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Subject: gpfsug-discuss Digest, Vol 88, Issue 9

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Today's Topics:

   1. Re: Identifiable groups of disks? (Simon Thompson)
   2. Re: Identifiable groups of disks? (Andrew Beattie)


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Message: 1
Date: Tue, 14 May 2019 09:08:28 +0000
From: Simon Thompson <S.J.Thompson at bham.ac.uk>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] Identifiable groups of disks?
Message-ID: <CC8C3375-0DD0-4CC5-AF26-685BBB1F1260 at bham.ac.uk>
Content-Type: text/plain; charset="utf-8"


When you create the file-system, you create NSD devices (on physical disks ? usually LUNs), and then assign these devices as disks to a file-system. This sounds straight forwards.

Note GPFS isn?t really intedned for JBODs unless you have GNR code.

Simon

From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of Aaron Turner <A.Turner at lboro.ac.uk>
Reply-To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>
Date: Tuesday, 14 May 2019 at 09:47
To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>
Subject: [gpfsug-discuss] Identifiable groups of disks?

Scenario:


  *   one set of JBODS
  *   want to create two GPFS file systems
  *   want to ensure that file system A uses physical disks a0, a1... an-1 and file system B uses physical disks b0, b1... bn-1
  *   want to be able to assign specific sets of disks a0..an-1, b0..bn-1 on creation
  *   Potentially allows all disks b0..bn-1 to be destroyed if required whilst not affecting a0..an-1
Is this possible in GPFS?

Regards

_______?_______________________________
Aaron Turner
Senior IT Services Specialist in High Performance Computing
Loughborough University
a.turner at lboro.ac.uk
01509 226185
______________________________________


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Message: 2
Date: Tue, 14 May 2019 09:17:33 +0000
From: "Andrew Beattie" <abeattie at au1.ibm.com>
To: gpfsug-discuss at spectrumscale.org
Cc: gpfsug-discuss at spectrumscale.org
Subject: Re: [gpfsug-discuss] Identifiable groups of disks?
Message-ID:
        <OF68F4CBFB.D95F9009-ON002583FA.00325E29-002583FA.00330B96 at notes.na.collabserv.com>

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