tree 0538385c82815856a2863b245490d0055c0fa862
parent 56124a1eb09a7822ca71fcf4d972dcd8750d66cf
author aarefiev <aarefiev@mirantis.com> 1762887478 -0800
committer aarefiev <aarefiev@mirantis.com> 1766496579 -0800

workaround: Wait for instance.host=None when shelving

There is a race in Nova where an instance being shelved is set to the
SHELVED_OFFLOADED vm_state before the instance.host is cleared. It
appears to be non-trivial to fix given the comments in that code
explictly say the updates have the be in that order.

This works around the issue by waiting until the instance.host is None
before considering the shelve offload to be completed.

Related-Bug: #2045785
Related-Issue: PRODX-52273 PRODX-51683 PRODX-54963

Supercede Ia45247a7aa14eb5f0038d4512a0b4ebe6af5a573

Change-Id: Ic0177a46192810a21be0d02a221c83df28ec16fe