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[Balazs Gibizer <balazs.gibizer@xxxxxxxxxxxx>]

Public bug reported:

The block device mapping is included in the instance versioned
notifications with I18e7483ec9a484a660e1d306fdc0986e1d5f952b. This means
that if so configured nova will load the BDM from the DB for every
instance notification. This is wasteful when the BDM is already loaded
in the context of the call from where the notification is emitted. In
this case that BDM should be reused to remove the unnecessary DB load.

** Affects: nova
     Importance: Undecided
     Assignee: Balazs Gibizer (balazs-gibizer)
         Status: In Progress


** Tags: notifications

** Changed in: nova
     Assignee: (unassigned) => Balazs Gibizer (balazs-gibizer)

** Tags added: notifications

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https://bugs.launchpad.net/bugs/1718226

Title:
  bdm is wastefully loaded for versioned instance notifications

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  The block device mapping is included in the instance versioned
  notifications with I18e7483ec9a484a660e1d306fdc0986e1d5f952b. This
  means that if so configured nova will load the BDM from the DB for
  every instance notification. This is wasteful when the BDM is already
  loaded in the context of the call from where the notification is
  emitted. In this case that BDM should be reused to remove the
  unnecessary DB load.

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