[nova][ptg] Allow compute nodes to use DISK_GB from shared storage RP by using aggregate relationship
balazs.gibizer at est.tech
Wed Nov 13 14:22:17 UTC 2019
On Fri, Nov 8, 2019 at 08:05, Matt Riedemann <mriedemos at gmail.com>
> On 11/8/2019 2:01 AM, Balázs Gibizer wrote:
>> * when compute restarts and sees that 'using_shared_disk_provider' =
>> True in the config, it adds the its compute RP to the aggregate
>> in 'sharing_disk_aggregate' Then if it sees that the root RP still
>> DISK_GB inventory then trigger a reshape
> Conversely, if the deployer decides to use local disk for the host
> again, what are the steps?
> 1. Change using_shared_disk_provider=False
> 2. Restart/SIGHUP compute service
> 3. Compute removes itself from the aggregate
> 4. Compute reshapes to add DISK_GB inventory on the root compute node
> resource provider and moves DISK_GB allocations from the sharing
> provider back to the root compute node provider.
Seems correct to me.
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