- instance = self.instance
- primary_node = self.cfg.GetNodeInfo(instance.primary_node)
-
- source_node = instance.primary_node
- target_node = instance.secondary_nodes[0]
-
- if instance.admin_up:
- feedback_fn("* checking disk consistency between source and target")
- for dev in instance.disks:
- # for drbd, these are drbd over lvm
- if not _CheckDiskConsistency(self, dev, target_node, False):
- if not self.op.ignore_consistency:
- raise errors.OpExecError("Disk %s is degraded on target node,"
- " aborting failover." % dev.iv_name)
- else:
- feedback_fn("* not checking disk consistency as instance is not running")
-
- feedback_fn("* shutting down instance on source node")
- logging.info("Shutting down instance %s on node %s",
- instance.name, source_node)
-
- result = self.rpc.call_instance_shutdown(source_node, instance,
- self.op.shutdown_timeout)
- msg = result.fail_msg
- if msg:
- if self.op.ignore_consistency or primary_node.offline:
- self.proc.LogWarning("Could not shutdown instance %s on node %s."
- " Proceeding anyway. Please make sure node"
- " %s is down. Error details: %s",
- instance.name, source_node, source_node, msg)
- else:
- raise errors.OpExecError("Could not shutdown instance %s on"
- " node %s: %s" %
- (instance.name, source_node, msg))
-
- feedback_fn("* deactivating the instance's disks on source node")
- if not _ShutdownInstanceDisks(self, instance, ignore_primary=True):
- raise errors.OpExecError("Can't shut down the instance's disks.")
-
- instance.primary_node = target_node
- # distribute new instance config to the other nodes
- self.cfg.Update(instance, feedback_fn)
-
- # Only start the instance if it's marked as up
- if instance.admin_up:
- feedback_fn("* activating the instance's disks on target node")
- logging.info("Starting instance %s on node %s",
- instance.name, target_node)
-
- disks_ok, _ = _AssembleInstanceDisks(self, instance,
- ignore_secondaries=True)
- if not disks_ok:
- _ShutdownInstanceDisks(self, instance)
- raise errors.OpExecError("Can't activate the instance's disks")
-
- feedback_fn("* starting the instance on the target node")
- result = self.rpc.call_instance_start(target_node, instance, None, None)
- msg = result.fail_msg
- if msg:
- _ShutdownInstanceDisks(self, instance)
- raise errors.OpExecError("Could not start instance %s on node %s: %s" %
- (instance.name, target_node, msg))