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[fupingxie <1794647@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description
===========
When migrating to other hosts, if inst_base is on shared storage, it will recreate inst_base after moving inst_base to inst_base_resize. But rbd backend is treated as shared storage too, it will create inst_base on source host also. In this situation, even if the resize finished, the inst_base on source host will still exist. This wll trigger errors when live-migration to the source host.

** Affects: nova
     Importance: Undecided
     Assignee: fupingxie (fpxie)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => fupingxie (fpxie)

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https://bugs.launchpad.net/bugs/1794647

Title:
  unnecessary inst_base was created

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========
  When migrating to other hosts, if inst_base is on shared storage, it will recreate inst_base after moving inst_base to inst_base_resize. But rbd backend is treated as shared storage too, it will create inst_base on source host also. In this situation, even if the resize finished, the inst_base on source host will still exist. This wll trigger errors when live-migration to the source host.

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