VSA Simple Scheduler
Bases: nova.scheduler.simple.SimpleScheduler
Implements Scheduler for volume placement.
Must override this method for VSA scheduler to work.
Picks the best host based on requested drive type capability.
Picks hosts for hosting multiple volumes.
Bases: nova.scheduler.vsa.VsaScheduler
Implements VSA scheduler to select the host with least used capacity of particular type.
Bases: nova.scheduler.vsa.VsaScheduler
Implements VSA scheduler to select the host with most available capacity of one particular type.