[openstack-dev] [nova] Supporting volume_type when booting from volume

Jay Bryant jungleboyj at gmail.com
Tue May 23 22:58:30 UTC 2017

On 5/23/2017 9:56 AM, Duncan Thomas wrote:
> On 23 May 2017 4:51 am, "Matt Riedemann" <mriedemos at gmail.com 
> <mailto:mriedemos at gmail.com>> wrote:
>     Is this really something we are going to have to deny at least
>     once per release? My God how is it that this is the #1 thing
>     everyone for all time has always wanted Nova to do for them?
> Is it entirely unreasonable to turn the question around and ask why, 
> given it is such a commonly requested feature, the Nova team are so 
> resistant to it?
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I am going to jump into the fray here ...

I think that at some point we need to do a cost/benefit analysis.  If 
customers really want this, than maybe it is worth the potential 
technical debt.  Going down a route of hacking something together from 
the client seems to potentially incur more technical debt and create a 
worse UX.

At the risks of having things thrown at me, I am going to say that this 
could have a number of benefits.  It could be leveraged by the Cinder 
Ephemeral driver that is being considered.  Volume types associated with 
compute hosts could be used to ensure use of storage local to the 
compute host that is managed by Cinder.

Anyway, that is my $0.02.


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