[release-v1.43] Start smart clone controller from datavolume controller when needed backport #2271
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Signed-off-by: Alexander Wels awels@redhat.com
What this PR does / why we need it:
It was possible for the CSI snapshot CRD check to fail silently and prevent the smart clone controller from starting during the cdi deployment pod start up. This would prevent smart clone from working properly.
This moves the creation of the smart clone controller into the datavolume controller when someone attempts to do a smart clone. Until that happens the smart clone controller is not started at all. To ensure we don't have multiple smart clone controllers started, we use a channel to synchronize creation, and once created the function will be a no-op.
Which issue(s) this PR fixes (optional, in
fixes #<issue number>(, fixes #<issue_number>, ...)
format, will close the issue(s) when PR gets merged):Fixes #
Special notes for your reviewer:
Release note: