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[Erno Kuvaja <jokke@xxxxxx>]

** Also affects: glance-store
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1764200

Title:
  Glance Cinder backed images & multiple regions

Status in Glance:
  New
Status in glance_store:
  New

Bug description:
  When using the cinder backed images as per

  https://docs.openstack.org/cinder/latest/admin/blockstorage-volume-
  backed-image.html

  We have multiple locations, glance configured as

  /etc/glance/glance-api.conf

  [glance_store]
  stores = swift, cinder
  default_store = swift
  -snip-
  cinder_store_auth_address = https://hostname:5000/v3
  cinder_os_region_name = Region
  cinder_store_user_name = glance
  cinder_store_password = Password
  cinder_store_project_name = cinder-images
  cinder_catalog_info = volume:cinder:internalURL

  
  cinder clones the volume correctly, then talks to glance to add the location of cinder://

  glance then talks to cinder to validate the volume id, however this
  step uses the wrong cinder endpoint and checks the other region.

  From /usr/lib/python2.7/site-packages/glance_store/_drivers/cinder.py

  It appears the region name is only used when not passing in the
  project/user/password.

  Passing the os_region_name to the cinderclient.Client call on line 351
  appears to fix this.

  ie

      c = cinderclient.Client(username,
                              password,
                              project,
                              auth_url=url,
                              region_name=glance_store.cinder_os_region_name,
                              insecure=glance_store.cinder_api_insecure,
                              retries=glance_store.cinder_http_retries,
                              cacert=glance_store.cinder_ca_certificates_file)

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