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[wang jian <jianwdl@xxxxxxxxxx>]

Public bug reported:

The resource_tracker  get a 'vcpus_used' number from drivers' get_available_resource method. But resource_tracker doesn't use this number to calculate, instead it calculate the vcpus used number according to the number of vcpus  the current instances use. 
It result that the number returned from drivers is not identical to the 'vcpus_used' number in 'nova hypervisor-show' result. This is confusing

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1342546

Title:
  The 'vcpus_used' number reported by driver is useless and confusing

Status in OpenStack Compute (Nova):
  New

Bug description:
  The resource_tracker  get a 'vcpus_used' number from drivers' get_available_resource method. But resource_tracker doesn't use this number to calculate, instead it calculate the vcpus used number according to the number of vcpus  the current instances use. 
  It result that the number returned from drivers is not identical to the 'vcpus_used' number in 'nova hypervisor-show' result. This is confusing

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