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[nova][ptg] Allow compute nodes to use DISK_GB from shared storage RP by using aggregate relationship


On 11/8/2019 2:01 AM, Balázs Gibizer wrote:
> * deployer needs to create the sharing disk RP and report inventory /
> traits on it
> * deployer needs to define the placement aggregate and add the sharing
> disk RP into it
> * when compute restarts and sees that 'using_shared_disk_provider' =
> True in the config, it adds the its compute RP to the aggregate defined
> in 'sharing_disk_aggregate' Then if it sees that the root RP still has
> DISK_GB inventory then trigger a reshape

Does the compute host also get added to a nova host aggregate which 
mirrors the resource provider aggregate in placmeent or do we only need 
the placement resource provider sharing DISK_GB aggregate?

-- 

Thanks,

Matt