[Openstack] nova state machine simplification and clarification

Yun Mao yunmao at gmail.com
Fri May 25 18:58:27 UTC 2012


Hi,

the first (simple) step to simplify power_state is in gerrit for review.
https://review.openstack.org/#/c/7796/

The document is also migrated to wiki: http://wiki.openstack.org/VMState
Thanks,

Yun


On Fri, May 25, 2012 at 8:42 AM, Vaze, Mandar <Mandar.Vaze at nttdata.com> wrote:
> Sorry for responding to old thread, I later realized that Yun had already responded to Gabe's query.
>
> -----Original Message-----
> From: Vaze, Mandar
> Sent: Friday, May 25, 2012 6:10 PM
> To: 'Gabe Westmaas'; Mark Washenberger; openstack at lists.launchpad.net; yunmao at gmail.com
> Subject: RE: [Openstack] nova state machine simplification and clarification
>
>> 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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