kubernetes
Make volume_zone scheduler plugin aware of topology so it can schedule
Signed-off-by: Alexander Wels [email protected]
What type of PR is this?
/kind feature
What this PR does / why we need it:
When schedulings pods that use a PVC from a WaitForFirstConsumer storage class, the volume_zone scheduler plugin current does not take topology information into account when the PVC has a defined dataSource(Ref) and that data source is another PVC or a volume snapshot.
The problem is described in detail in issue #107479
Which issue(s) this PR fixes:
Fixes #107479
Special notes for your reviewer:
I am aware I have no tests at this point. I just want to see if this approach is acceptable or not. If this is a viable direction, I will at proper tests and functional tests (need a distributed hostpath csi setup for proper testing). In particular I am using a dynamic lister to find the volume snapshot and volume snapshot content since I didn't want to import the types here.
Does this PR introduce a user-facing change?
When scheduling a Pod that uses a PVC that has a dataSource, take the topology of that data source into account when making scheduling decisions.
Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:
@awels: This issue is currently awaiting triage.
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Hi @awels. Thanks for your PR.
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In response to this:
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This bot triages PRs according to the following rules:
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lifecycle/staleis applied- After 30d of inactivity since
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