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Reviewed:  https://review.openstack.org/599861
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=a4f1274f40513d0a350a38c6e389c9a76c272379
Submitter: Zuul
Branch:    master

commit a4f1274f40513d0a350a38c6e389c9a76c272379
Author: Matt Riedemann <mriedem.os@xxxxxxxxx>
Date:   Tue Sep 4 18:28:21 2018 -0400

    Fix TypeError in nova-manage cell_v2 list_cells
    
    Cell mappings don't require a name, so when listing
    cells, if any mappings don't have a name, the sorted
    function will fail with a TypeError since you can't compare
    None to a string.
    
    This fixes the issue by using the empty string if the cell
    mapping name is None.
    
    Change-Id: I4fc9d8d1a96f1ec722c2c92dead3f5c4c94d4382
    Closes-Bug: #1790695


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1790695

Title:
  TypeError in nova-manage cell_v2 list_cells if a cell does not have a
  name

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) ocata series:
  New
Status in OpenStack Compute (nova) pike series:
  New
Status in OpenStack Compute (nova) queens series:
  New
Status in OpenStack Compute (nova) rocky series:
  New

Bug description:
  This was reported in IRC:

  nova-manage cell_v2 list_cells
  An error has occurred:
  Traceback (most recent call last):
    File "/usr/lib64/python3.5/site-packages/nova/cmd/manage.py", line 2303, in main
      ret = fn(*fn_args, **fn_kwargs)
    File "/usr/lib64/python3.5/site-packages/nova/cmd/manage.py", line 1484, in list_cells
      for cell in sorted(cell_mappings, key=lambda _cell: _cell.name):
  TypeError: unorderable types: NoneType() < str()

  That happened because one of the cells didn't have a name and --name
  is optional in the create_cell command.

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