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Revision 6a1434d7


Added by Andrea Spadaccini over 12 years ago

Make migration RPC non-blocking

To add status reporting for the KVM migration, the instance_migrate RPC
must be non-blocking. Moreover, there must be a way to represent the
migration status and a way to fetch it.

  • constants.py:
    - add constants representing the migration statuses
  • objects.py:
    - add the MigrationStatus object
  • hypervisor/hv_base.py
    - change the FinalizeMigration method name to FinalizeMigrationDst
    - add the FinalizeMigrationSource method
    - add the GetMigrationStatus method
  • hypervisor/hv_kvm.py
    - change the implementation of MigrateInstance to be non-blocking
    (i.e. do not poll the status of the migration)
    - implement the new methods defined in BaseHypervisor
  • backend.py, server/noded.py, rpc.py
    - add methods to call the new hypervisor methods
    - fix documentation of the existing methods to reflect the changes
  • cmdlib.py
    - adapt the logic of TLMigrateInstance._ExecMigration to reflect
    the changes

Signed-off-by: Andrea Spadaccini <>
Reviewed-by: Michael Hanselmann <>


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