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[Tetsuro Nakamura <nakamura.tetsuro@xxxxxxxxxxxxx>]

Public bug reported:

Description
===========

When we request shared resource granularly, we can get duplicate
allocation candidates for a same resource provider

How to reproduce
================
 
1. Set up
    1-1. Set up two compute nodes (cn1, cn2 with VCPU resources)
    1-2. Set up one shared storage (ss1 with DISK_GB resources) marked with "MISC_SHARES_VIA_AGGREGATE"
    1-3. Put all of them in one aggregate

2. Request only DISK_GB resource with granular request
-> you will get duplicate allocation request of DISK_GB resource on ss1
 
(NOTE): non-granular requests don't provide such duplicate entry

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: placememt

** Tags added: placememt

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https://bugs.launchpad.net/bugs/1817458

Title:
  duplicate allocation candidates with granular request

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========

  When we request shared resource granularly, we can get duplicate
  allocation candidates for a same resource provider

  How to reproduce
  ================
   
  1. Set up
      1-1. Set up two compute nodes (cn1, cn2 with VCPU resources)
      1-2. Set up one shared storage (ss1 with DISK_GB resources) marked with "MISC_SHARES_VIA_AGGREGATE"
      1-3. Put all of them in one aggregate

  2. Request only DISK_GB resource with granular request
  -> you will get duplicate allocation request of DISK_GB resource on ss1
   
  (NOTE): non-granular requests don't provide such duplicate entry

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