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[Loganathan Parthipan <1305062@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I'd expect live-migration to migrate instances in paused or rescued
states as they're online VMs anyway, as opposed to those that are
shutoff or suspended. However, I see that it's currently disabled in the
compute API.

nova live-migration --block-migrate b32b0eb4-b8aa-4204-b104-61e733839227 overcloud-novacompute0-aipxwbabgq7a
ERROR: Cannot 'os-migrateLive' while instance is in vm_state paused (HTTP 409) (Request-ID: req-d5b47ef0-6674-48dd-b4ac-eea86951246c)

nova live-migration --block-migrate b32b0eb4-b8aa-4204-b104-61e733839227 overcloud-novacompute0-aipxwbabgq7a
ERROR: Cannot 'os-migrateLive' while instance is in vm_state rescued (HTTP 409) (Request-ID: req-5eea8f1c-5602-4d48-9690-929baff3b560)

This is stopped by this decorator:

    @check_instance_state(vm_state=[vm_states.ACTIVE])                            
    def live_migrate(self, context, instance, block_migration,


However, there are more to it than fixing the decorator.

Should we treat this as a feature or bugfix?

** Affects: nova
     Importance: Undecided
     Assignee: Loganathan Parthipan (parthipan)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Loganathan Parthipan (parthipan)

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https://bugs.launchpad.net/bugs/1305062

Title:
  live migration doesn't work for VMs in paused or rescued states

Status in OpenStack Compute (Nova):
  New

Bug description:
  I'd expect live-migration to migrate instances in paused or rescued
  states as they're online VMs anyway, as opposed to those that are
  shutoff or suspended. However, I see that it's currently disabled in
  the compute API.

  nova live-migration --block-migrate b32b0eb4-b8aa-4204-b104-61e733839227 overcloud-novacompute0-aipxwbabgq7a
  ERROR: Cannot 'os-migrateLive' while instance is in vm_state paused (HTTP 409) (Request-ID: req-d5b47ef0-6674-48dd-b4ac-eea86951246c)

  nova live-migration --block-migrate b32b0eb4-b8aa-4204-b104-61e733839227 overcloud-novacompute0-aipxwbabgq7a
  ERROR: Cannot 'os-migrateLive' while instance is in vm_state rescued (HTTP 409) (Request-ID: req-5eea8f1c-5602-4d48-9690-929baff3b560)

  This is stopped by this decorator:

      @check_instance_state(vm_state=[vm_states.ACTIVE])                            
      def live_migrate(self, context, instance, block_migration,

  
  However, there are more to it than fixing the decorator.

  Should we treat this as a feature or bugfix?

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