[gpfsug-discuss] Mounting filesystem on top of an existing filesystem
Uwe Falke
UWEFALKE at de.ibm.com
Thu Nov 19 19:18:41 GMT 2020
Just the risk your parent system dies which will block your access to the
child file system mounted on a mount point within.
If that is not bothering , go ahead mount stacks . As for the symling
though : it is also gone if the parent dies :-).
Mit freundlichen Grüßen / Kind regards
Dr. Uwe Falke
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From: KG <spectrumscale at kiranghag.com>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: 19/11/2020 17:41
Subject: [EXTERNAL] Re: [gpfsug-discuss] Mounting filesystem on top
of an existing filesystem
Sent by: gpfsug-discuss-bounces at spectrumscale.org
You can also set mount priority on filesystems so that gpfs can try to
mount them in order...parent first
On Thu, Nov 19, 2020, 21:19 Jonathan Buzzard <
jonathan.buzzard at strath.ac.uk> wrote:
On 19/11/2020 15:34, Caubet Serrabou Marc (PSI) wrote:
> Hi,
>
>
> I have a filesystem holding many projects (i.e., mounted under
> /projects), each project is managed with filesets.
>
> I have a new big project which should be placed on a separate filesystem
> (blocksize, replication policy, etc. will be different, and subprojects
> of it will be managed with filesets). Ideally, this filesystem should be
> mounted in /projects/newproject.
>
>
> Technically, mounting a filesystem on top of an existing filesystem
> should be possible, but, is this discouraged for any reason? How GPFS
> would behave with that and is there a technical reason for avoiding this
> setup?
>
> Another alternative would be independent mount point + symlink, but I
> really would prefer to avoid symlinks.
This has all the hallmarks of either a Windows admin or a newbie
Linux/Unix admin :-)
Simply put /projects is mounted on top of whatever file system is
providing the root file system in the first place LOL.
Linux/Unix and/or GPFS does not give a monkeys about mounting another
file system *ANYWHERE* in it period because there is no other way of
doing it.
JAB.
--
Jonathan A. Buzzard Tel: +44141-5483420
HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG
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