[gpfsug-discuss] gpfs snapshots

[Jez Tucker]

Hi

   I still think I'm coming down on the side of simplistic ease of use:

Example:

[jtucker at pixstor ~]# mmlssnapshot mmfs1
Snapshots in file system mmfs1:
Directory                SnapId    Status  Created                   Fileset	Comment
@GMT-2016.09.13-23.00.14 551       Valid   Wed Sep 14 00:00:02 2016  myproject	Prior to phase 1
@GMT-2016.09.14-05.00.14 552       Valid   Wed Sep 14 06:00:01 2016  myproject  Added this and that
@GMT-2016.09.14-11.00.14 553       Valid   Wed Sep 14 12:00:01 2016  myproject  Merged project2
@GMT-2016.09.14-17.00.14 554       Valid   Wed Sep 14 18:00:02 2016  myproject  Before clean of .xmp
@GMT-2016.09.14-17.05.30 555       Valid   Wed Sep 14 18:05:03 2016  myproject  Archival


Jez



On 14/09/16 19:10, service at metamodul.com wrote:
> Why not use a GPFS user extented attribut for that ?
> In a certain way i see GPFS as a database. ^_^
> Hajo
>
>
>
> Von Samsung Mobile gesendet
>
>
> -------- Ursprüngliche Nachricht --------
> Von: Jez Tucker
> Datum:2016.09.13 11:10 (GMT+01:00)
> An: gpfsug-discuss at spectrumscale.org
> Betreff: Re: [gpfsug-discuss] gpfs snapshots
>
> Hey Yuri,
>
>   Perhaps an RFE here, but could I suggest there is much value in 
> adding a -c <comment> option to mmcrsnapshot?
>
> Use cases:
>
> mmcrsnapshot myfsname @GMT-2016.09.13-10.00.00 -j myfilesetname -c 
> "Before phase 2"
>
> and
>
> mmcrsnapshot myfsname @GMT-2016.09.13-10.00.00 -j myfilesetname -c 
> "expire:GMT-2017.04.21-16.00.00"
>
> Ideally also: mmcrsnapshot fs1 
> fset1:snapA:expirestr,fset2:snapB:expirestr,fset3:snapC:expirestr
>
> Then it's easy to iterate over snapshots and subsequently 
> mmdelsnapshot snaps which are no longer required.
> There are lots of methods to achieve this, but without external 
> databases / suchlike, this is rather simple and effective for end users.
>
> Alternatively a second comment like -expire flag as user metadata may 
> be preferential.
>
> Thoughts?
>
> Jez
>
>
> On 13/09/16 05:32, Valdis.Kletnieks at vt.edu wrote:
>> On Tue, 13 Sep 2016 00:30:19 +0200, Lukas Hejtmanek said:
>>> I guess we could reach snapid 100,000.
>> It probably stores the snap ID as a 32 or 64 bit int, so 100K is peanuts.
>>
>> What you *do* want to do is make the snap *name* meaningful, using
>> a timestamp or something to keep your sanity.
>>
>> mmcrsnapshot fs923 `date +%y%m%d-%H%M`   or similar.
>> _______________________________________________
>> gpfsug-discuss mailing list
>> gpfsug-discuss at spectrumscale.org
>> http://gpfsug.org/mailman/listinfo/gpfsug-discuss
>
>
> -- 
> Jez Tucker
> Head of Research & Product Development
> Pixit Media
> www.pixitmedia.com <http://www.pixitmedia.com>
>


-- 
Jez Tucker
Head of Research & Product Development
Pixit Media
www.pixitmedia.com <http://www.pixitmedia.com>

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