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

Balázs Gibizer balazs.gibizer at est.tech
Wed Nov 13 14:21:52 UTC 2019

On Fri, Nov 8, 2019 at 08:03, Matt Riedemann <mriedemos at gmail.com> 
> 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?

As far as I see we only need the placement aggregate to make this work.

> --
> Thanks,
> Matt

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