[nova][ptg] Allow compute nodes to use DISK_GB from shared storage RP by using aggregate relationship
sbauza at redhat.com
Wed Nov 13 14:34:16 UTC 2019
On Wed, Nov 13, 2019 at 3:32 PM Balázs Gibizer <balazs.gibizer at est.tech>
> 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
> >> defined
> >> in 'sharing_disk_aggregate' Then if it sees that the root RP still
> >> has
> >> 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.
> > Correct?
> Seems correct to me.
Me too. To be clear, I don't think operators would modify the above but if
so, they would need reshapes.
> > --
> > Thanks,
> > Matt
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