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This is very helpful, thank you !  Is this planned for kilo ?

> -----Original Message-----
> From: John Griffith [mailto:john.griffith8 at gmail.com]
> Sent: Tuesday, November 4, 2014 5:00 PM
> To: OpenStack Development Mailing List (not for usage questions)
> Cc: Karen Xie
> Subject: Re: [openstack-dev] [cinder] Adding support for iSCSI helper
> 
> On Wed, Nov 5, 2014 at 12:40 AM, Anish Bhatt <anish at chelsio.com> wrote:
> > Do the minimum driver features listed here
> > https://wiki.openstack.org/wiki/Cinder#Minimum_Driver_Features  still
> > hold if I’m trying to add support for something that is a drop in
> > replacement for iet/tgt that has no volume support. Does this still
> > need to shipped as a driver plugin ?
> >
> >
> >
> > If the volume support stuff is a hard requirement, is it acceptable to
> > reuse the LVM backend already shipped with cinder (or brick, though
> > I’m not a 100% sure of the brick-cinder separation). Are there any
> > examples of this available at all ?
> >
> > -Anish
> >
> >
> >
> > One socket to bind them all.
> >
> >
> >
> >
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> >
> 
> Hi Anish,
> 
> No IMO those requirements are specific for Backend Storage Devices and the
> drivers submitted for them.  Target Helpers are a different category.  That
> being said, I've been trying to get us away from the current model we have
> of the Target Helper/Driver inheritance.  We almost had this in Juno but it
> was very late in the release and I wasn't comfortable releasing it right before
> RC.
> 
> Since then a number of changes have gone in and I've had to do some
> rework of it.  You can get an idea of the direction I'm hoping to go here [1].  If
> you have a new Target Helper you'd like to submit it would be great if you
> took a look at this model going forward, it should make life a good bit easier
> for you.  Feel free to grab me on IRC and maybe I can just roll your addition
> into the work I've got in progress already.
> 
> Note that the follow up patch that actually separates the Target from the
> Volume Driver has been abandoned and I'm going to need to rewrite it.
> 
> Thanks,
> John
> 
> [1]: https://review.openstack.org/#/c/131860/
> 
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