[nova] Persistent memory resource tracking model

Jay Pipes jaypipes at gmail.com
Mon Jan 7 14:02:40 UTC 2019

On 01/07/2019 05:05 AM, Sean Mooney wrote:
> i think i share jays preference here in increasing the granularity and eiter tracking
> the allocation in MiBs or Bytes. i do somewhat agree that bytes is likely to fine grained
> hence my perference for mebibytes.

Actually, that's not at all my preference for PMEM :) My preference is 
to use custom resource classes like "CUSTOM_PMEM_NAMESPACE_1TB" because 
the resource is the namespace, not the bunch of blocks/bytes of storage.

With regards to the whole "finest-grained unit" thing, I was just 
responding to Alex Xu's comment:

"The point of the initial design is avoid to encode the `size` in the
  resource class name. If that is ok for you(I remember people hate to
  encode size and number into the trait name), then we will update the
  design. Probably based on the namespace configuration, nova will be
  responsible for create those custom RC first. Sounds works."


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