[gpfsug-discuss] mmchfileset syntax
Daniel Kidger
daniel.kidger at uk.ibm.com
Wed Jan 3 13:13:03 GMT 2018
Richard,
The documentation says that that you can simply use ‘mv’ on a live fileset too.
I have just tried this and yes it appears to work. I can move a fileset into another subdirectory of the same filesystem and mmlsfileset confirms the new mount point.
Daniel
Dr Daniel Kidger
IBM Technical Sales Specialist
Software Defined Solution Sales
+ 44-(0)7818 522 266
daniel.kidger at uk.ibm.com
> On 3 Jan 2018, at 12:37, Sobey, Richard A <r.sobey at imperial.ac.uk> wrote:
>
> 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
>
>
>
>
>
>
> Dr Daniel Kidger
> IBM Technical Sales Specialist
> Software Defined Solution Sales
>
> + 44-(0)7818 522 266
> daniel.kidger at uk.ibm.com
>
> On 3 Jan 2018, at 10:38, Sobey, Richard A <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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Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number 741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
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