Zhitao Li created MESOS-8663:
Summary: Support transfer of persistent volume between roles
without losing data
Issue Type: Improvement
Reporter: Zhitao Li
A persistent volume is scoped to a role right now. On agent, the volume path
actually included the role string.
A possible workflow from operator side is to transfer the volume onto a new
role (i.e, a reorg which transfers the owner of a database to a new team).
Today the operator would need to create new volume and delete old volume,
during which data could be lost (unless they perform manual data migration out
of Mesos control).
This would be an operational blocker for us to try out hierarchical roles once
they support persistent volume.
The goal here is to see whether Mesos can provide an atomic operation which can
allow transfer the volume onto a different role without necessity to
delete/recreate the volume.
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