#Limit provisioned disk space for trident operator

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summer roost
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Hi,

is there a possbility to limit the amount of provisioned disk space per tridentBackendConfig or trident operator instance.

I did found the following 2 options:

  • limitAggregateUsage - only prevents volume creation requests, when aggregate usage is higher than x %
  • limitVolumeSize - only prevents volume creation requests, when a single volume size is bigger than xGi

I know that one can set a SVM limit, but our customer would like to use one SVM for multiple clusters (although we do not recommend this approach).

BR,

Philipp

short lynx
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I guess these are all the options you have. Note that limitAggregateUsage only works if you add the whole cluster to Trident (i.e. you use a cluster_mgmt LIF and not an SVM management LIF) so that option might be right out.
We have customers who work around that by setting a relatively low limitVolumeSize (say 20 gig) combined with a limit on the number of volumes in the SVM, and if they have a use-case that requires a bigger volume, an administrator temporarily edits the backend config to allow a bigger volume, waits till provisioning is done, and then sets it back to the previous value

summer roost
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Thanks @short lynx , I already thought about using volume limits (# of vols) in combination with limitVolumeSize as well.

Also thanks for the hint on limitAggregateUsage, requiring cluster_mgmg LIF access. Did not though about that!

sharp locust
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hi, which Trident driver is used in this context (ONTAP-NAS or ONTAP-NAS-ECONOMY) ?