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[neil nie <neil.nie@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

In OpenStack Configuration Reference section scheduling, it states following:
Are in a set of group hosts (if requested) (ServerGroupAffinityFilter).

It looks like affinity server group can be placed on multiple hosts, but
after some trials and investigation, the affinity server group is
limited on one host. When the current host doesn't have enough resource
to host the subsequent VMs, the nova scheduler returns "No Valid Host
Was Found".

I don't exactly know whether one affinity server group plans to support
multiple hosts. If yes the current implementation needs to update.
Otherwise, above document needs to reword.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1427522

Title:
  affinity server group is limited on one host

Status in OpenStack Compute (Nova):
  New

Bug description:
  In OpenStack Configuration Reference section scheduling, it states following:
  Are in a set of group hosts (if requested) (ServerGroupAffinityFilter).

  It looks like affinity server group can be placed on multiple hosts,
  but after some trials and investigation, the affinity server group is
  limited on one host. When the current host doesn't have enough
  resource to host the subsequent VMs, the nova scheduler returns "No
  Valid Host Was Found".

  I don't exactly know whether one affinity server group plans to
  support multiple hosts. If yes the current implementation needs to
  update. Otherwise, above document needs to reword.

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