[Openstack] nova state machine simplification and clarification

Vaze, Mandar Mandar.Vaze at nttdata.com
Fri May 25 12:39:10 UTC 2012


> I'd like to understand the difference between a soft and hard delete.

soft_delete is invoked when "reclaim_instance_interval" flag is set to non-zero.
In this case, when delete command is fired, only the VM is powered off, and vm_state is set to SOFT_DELETE
Other resources (like network, volume, and files created in instances_path etc) are cleaned up at later point via a periodic task.

> What exactly is a hard delete from the standpoint of a customer?  Is this just a delete
hard_delete is when vm is "destroyed" (As opposed to power off) and resources are cleaned up immediately.
This is the default configuration 

-Mandar



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