[gpfsug-discuss] Mounting filesystem on top of an existing filesystem

[Jonathan Buzzard]

On 19/11/2020 17:34, Jan-Frode Myklebust wrote:
> 
> I would not mount a GPFS filesystem within a GPFS filesystem. 
> Technically it should work, but I’d expect it to cause surprises if ever 
> the lower filesystem experienced problems. Alone, a filesystem might 
> recover automatically by remounting. But if there’s another filesystem 
> mounted within, I expect it will be a problem..
> 
> Much better to use symlinks.
> 

Think about that for a minute...


I guess if you are worried about /projects going away (which would 
suggest something really bad has happened anyway) would be to mount the 
GPFS file system that is currently holding /projects somewhere else and 
then bind mount everything into /projects

At this point I would note that bind mounts are much better than 
symlinks which suck for this sort of application.


JAB.

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