Could we utilise free capacity in the existing filesystem and empty NSDs, create a new FS and AFM migrate data in stages? Terribly long winded and frought with danger and peril... do not pass go... ah, answered my own question.
😊 Richard -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jonathan Buzzard Sent: 29 November 2017 16:35 To: gpfsug main discussion list <[email protected]> Subject: Re: [gpfsug-discuss] Online data migration tool On Wed, 2017-11-29 at 11:00 -0500, Yugendra Guvvala wrote: > Hi, > > I am trying to understand the technical challenges to migrate to GPFS > 5.0 from GPFS 4.3. We currently run GPFS 4.3 and i was all exited to > see 5.0 release and hear about some promising features available. But > not sure about complexity involved to migrate. > Oh that's simple. You copy all your data somewhere else (good luck if you happen to have a few hundred TB or maybe a PB or more) then reformat your files system with the new disk format then restore all your data to your shiny new file system. Over the years there have been a number of these "reformats" to get all the new shiny features, which is the cause of the grumbles because it is not funny and most people don't have the disk space to just hold another copy of the data, and even if they did it is extremely disruptive. JAB. -- Jonathan A. Buzzard Tel: +44141-5483420 HPC System Administrator, ARCHIE-WeSt. University of Strathclyde, John Anderson Building, Glasgow. G4 0NG _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
