yahoo-eng-team team mailing list archive

[Sylvain Bauza <sbauza@xxxxxxx>]

Closing an old bug, as it was fixed by
http://specs.openstack.org/openstack/nova-specs/specs/newton/implemented
/check-destination-on-migrations-newton.html

Now, if you provide a destination, we verify by calling the scheduler
for that target unless you provide an explicit "force" flag to the
migration call.


** Changed in: nova
       Status: Confirmed => Won't Fix

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https://bugs.launchpad.net/bugs/1452568

Title:
  nova allows to live-migrate instance from one availability zone to
  another

Status in OpenStack Compute (nova):
  Won't Fix

Bug description:
  Nova allows to live migrate instance from one AZ to another:
  Steps to reproduce:
  1.boot instance with --availability-zone param
  2. live migrate this instance on host located in another AZ, nova live-migration inst1 host2

  If user specify host during live-migration scheduler doen't make any checks: 
  Result: instance migrate successfully, but information in instances table in db doesn't updates
  mysql> select hostname, availability_zone from instances where deleted=false;
  +----------+-------------------+
  | hostname | availability_zone |
  +----------+-------------------+
  | demo     | alice-zone         |
  +----------+-------------------+

  while nova show command show real AZ info:
  root@node-7:~# nova show demo
  +--------------------------------------+--------------------------------------------------------------------------------------------------+
  | Property                             | Value                                                                                            |
  +--------------------------------------+--------------------------------------------------------------------------------------------------+
  | OS-EXT-AZ:availability_zone          | bob-zone                                                                                         |
  | name                                 | demo                                                                                             |
  +--------------------------------------+--------------------------------------------------------------------------------------------------+

  Nova should forbid such live migration, by adding extra checks, or
  update info in db table to provide data consistency

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