[gpfsug-discuss] preventing / delaying deletion of scheduled snapshots?

[Uwe Falke]

Just thought it over: maybe the schedule applied is not fixed at 
snapshot creation time, but always re-evaluated according to the 
associated rules.

If "monthly" is our current rule and "radarmonthly" is a montly creation 
rule with a (sufficiently) longer retention, could I just change  the 
rule for the fileset by

  chsnapassoc <sg> -n radarmonthly -o monthly -j <fileset>

? If that prevents the deletion of the snapshot from June 1st, I am done 
:-) Would that work?

Thanks

Uwe

On 26.07.24 21:11, Uwe Falke wrote:
> Drear all,
>
> we have configured scheduled creation of snapshots for several 
> filesets in a file system.
>
> Now, a couple of users discovered they'd been erroneously deleting 
> files since EoJune (some script misbehaving).
>
> The last snapshot before dates from Jun 1st and is to be deleted Aug 
> 1st. The time for the users might be too short to check and fix their 
> deleted data (as several might not have a chance to do so before Aug 
> 1st).
>
> I could not see how I could change the schedule for an existing 
> snapshot (i.e. delay / prevent its deletion) in the GUI (invsetigating 
> the GUI and studying the GPFS documentation / admin guide)
> The GUI commands include something like 
> /usr/lpp/mmfs/gui/cli/chsnapassoc but I do not know whether that 
> applies to existing snapshots as well or just for future ones (as the 
> rules cover both creation and lifetime of the snaps).
> How I could prevent the scheduled deletion of a single snapshot 
> (created by the GUI as scheduled snapshot)? Is that possible at all 
> (o.k., I might stop the GUI but as there are several filesets with 
> their scheduled snapshots, so that is not what I want actually).
>
> Thanks
>
> Uwe
>
>
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-- 
Karlsruhe Institute of Technology (KIT)
Scientific Computing Centre (SCC)
Scientific Data Management (SDM)

Uwe Falke

Hermann-von-Helmholtz-Platz 1, Building 442, Room 187
D-76344 Eggenstein-Leopoldshafen

Tel: +49 721 608 28024
Email: uwe.falke at kit.edu
www.scc.kit.edu

Registered office:
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KIT – The Research University in the Helmholtz Association

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