[gpfsug-discuss] migrating data from GPFS3.5 to ESS appliance(GPFS4.1)

[Scott Fadden]

File copy OR AFM.


Scott Fadden
Spectrum Scale - Technical Marketing
Phone: (503) 880-5833
sfadden at us.ibm.com
http://www.ibm.com/systems/storage/spectrum/scale



From:	"Oesterlin, Robert" <Robert.Oesterlin at nuance.com>
To:	gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:	01/29/2016 05:50 PM
Subject:	Re: [gpfsug-discuss] migrating data from GPFS3.5 to ESS
            appliance	(GPFS4.1)
Sent by:	gpfsug-discuss-bounces at spectrumscale.org



Not talking about ESS specifically, but It’s not possible to change the
block size of an existing file system – you are pretty much stuck with file
copy. Something I wish IBM would address, I’d love to change the block size
of some of my file system too.

Bob Oesterlin
Sr Storage Engineer, Nuance HPC Grid
507-269-0413


From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of Damir Krstic
<damir.krstic at gmail.com>
Reply-To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: Friday, January 29, 2016 at 1:31 PM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: [gpfsug-discuss] migrating data from GPFS3.5 to ESS appliance
(GPFS4.1)

We were planning of adding ESS to our existing GPFS cluster and adding its
disks and then deleting our old disks and having the data migrated this
way. However, our existing block size on our projects filesystem is 1M and
in order to extract as much performance out of ESS we would like its
filesystem created with larger block size. Besides rsync do you have any
suggestions of how to do this without downtime and in fastest way possible?
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