Ability to populate resource control with PSNs without any PNN

dmwm / WMCore

Core workflow management components for CMS.

Apache License 2.0

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Ability to populate resource control with PSNs without any PNN #8939

Open amaltaro opened 5 years ago

amaltaro commented 5 years ago

See also https://github.com/dmwm/WMCore/issues/6433 for further reference.

This is necessary for a better support of opportunistic resources where they don't have any PNN, but read and stage out to a "neighbor" storage according to the SITECONF configuration.

Right now the agent uses the CRIC data-processing API for populating the resource control, which doesn't show sites lacking a PSN x PNN association.

hufnagel commented 5 years ago

If the data-processing API only gives you PSN with associated PNN, I would argue it's the wrong API to call.

Are PSN without PNN association even stored in CRIC? How could we get a list of them?

amaltaro commented 5 years ago

We've been using that API for many years now. How about you discuss this subject with Stephan and CRIC team and get back to this ticket with a possible answer of which API would allow us to fetch PSNs without a PNN endpoint? :-)