[openstack-dev] [Heat][Nova] volumes handling on AWS Instance suspend/resume/delete
pshchelokovskyy at mirantis.com
Fri Mar 13 16:22:56 UTC 2015
Answer found - AWS CFN has no notion of stack suspend/resume, thus actual
AWS resources have it neither. As it it an OpenStack feature, and I know
how Nova + Cinder behave currently, it looks safe to remove the mentioned
On Fri, Mar 13, 2015 at 4:22 PM, Pavlo Shchelokovskyy <
pshchelokovskyy at mirantis.com> wrote:
> Hi all,
> as I am removing scheduler tasks from server resources, I have the
> following question:
> in OS Server resource on suspend/resume/delete we do not care about
> attached volumes. In fact Nova keeps them attached to the suspended
> instance (volumes are in 'in-use' state) and after server resume they are
> still attached to the server without any additional steps. On server delete
> Nova again detaches all the volumes automatically.
> On the other hand, in AWS Instance resource we manually detach volumes on
> delete/suspend and reattach them on resume. What's the point of that? Is it
> for some compatibility with instance+volumes behavior in real AWS or some
> leftover from earlier Nova days?
> An advice from anyone with AWS experience would be appreciated, as if it
> is not for compatibility sake, I would gladly remove that seemingly
> unnecessary logic.
> Best regards,
> Pavlo Shchelokovskyy
> Software Engineer
> Mirantis Inc
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