[gpfsug-discuss] Best way to migrate data

[Jonathan Buzzard]

On 18/10/2018 18:19, Dwayne.Hart at med.mun.ca wrote:
> Hi,
> 
> Just wondering what the best recipe for migrating a user’s home
> directory content from one GFPS file system to another which hosts a
> larger research GPFS file system? I’m currently using rsync and it
> has maxed out the client system’s IB interface.
> 

Be careful with rsync, it resets all your atimes which screws up any 
hope of doing ILM or HSM.

My personal favourite is to do something along the lines of

   dsmc restore /gpfs/<username>

Minimal impact on the user facing services, and seems to preserve atimes 
last time I checked. Sure it tanks your backup server a bit, but that is 
not user facing. What do users care if the backup takes longer than normal.

Of course this presumes you have a backup :-)


JAB.

-- 
Jonathan A. Buzzard                         Tel: +44141-5483420
HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG