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[HYSong <1945401@xxxxxxxxxxxxxxxxxx>]

Public bug reported:


If my aggregation has ceph backend node cmp01 and fcsan backend node cmp02, 
and I create a ceph backend VM01 in cmp01, then execute migrate it. 

The migration will be failed if scheduler filter cmp02 or I set the
target node is cmp02.


------Traceback------
oslo_messaging.rpc.client.RemoteError: Remote error: 
ClientException Unable to create attachment for volume 
(Invalid input received: Connector doesn't have required information: wwpns). 
(HTTP 500) 


I think nova need to pre-check the target node I set or 
filter the available storage backend compute nodes when selecting destination.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1945401

Title:
  scheduler can not filter node by storage backend

Status in OpenStack Compute (nova):
  New

Bug description:
  
  If my aggregation has ceph backend node cmp01 and fcsan backend node cmp02, 
  and I create a ceph backend VM01 in cmp01, then execute migrate it. 

  The migration will be failed if scheduler filter cmp02 or I set the
  target node is cmp02.

  
  ------Traceback------
  oslo_messaging.rpc.client.RemoteError: Remote error: 
  ClientException Unable to create attachment for volume 
  (Invalid input received: Connector doesn't have required information: wwpns). 
  (HTTP 500) 

  
  I think nova need to pre-check the target node I set or 
  filter the available storage backend compute nodes when selecting destination.

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