[gpfsug-discuss] mmchfileset syntax

[Sobey, Richard A]

Ah. So I can specify “device filesetname” OR “device -J junctionpath” (and mmchfileset gets the filesetname from that).

Ultimately though I cannot change the mount point of the fileset without mmunlink / mmlink, right?

Thanks
Richard


From: gpfsug-discuss-bounces at spectrumscale.org [mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of Daniel Kidger
Sent: 03 January 2018 11:50
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] mmchfileset syntax

-J is to define which fileset you are talking about.
The alternative is give the fileset name straight after the ‘device’ argument.

Once the fileset is unambiguous, you then use other command line option to change things
e.g. -j to change the *name* of this fileset.
-j doesn’t change the mount point, and indeed mmcrfileset doesn’t set the mount point either.

Daniel
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Dr Daniel Kidger
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On 3 Jan 2018, at 10:38, Sobey, Richard A <r.sobey at imperial.ac.uk<mailto:r.sobey at imperial.ac.uk>> wrote:
Hi all,

Attempting to change the junction path of a fileset and I’m getting some strange output. It may just not be possible but the documentation on mmchfileset itself doesn’t make it clear.

mmchfileset gpfs filesetname -J /gpfs/new_path
mmchfileset: Options -J and FilesetName cannot be specified at the same time.

Which leads to what’s the point of the following command as the error suggests it will work:

mmchfileset device -J /gpfs/new_path

…as not specifying a FilesetName to the input of mmchfileset seems odd.

I do of course know that I can just unlink and relink but hey.. trying to save a few precious seconds 😊

Cheers
Richard

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