[openstack-dev] [cinder] Grouping Multiple Backend provider

Chhavi Agarwal chhagarw at in.ibm.com
Fri Dec 19 12:31:48 UTC 2014

To be more clear let me explain it with the help of a use case :-
Consider I have 4 registered storage providers SVC, LVM, EMC, HDS
I want to use to 2  ( SVC, LVM )  providers for Task1
other 2 ( EMC, HDS ) providers for Task2.

Is it possible to have a filter which can be used for a set of volume

I tried below multi-backend providers but it by default calls the
CapacityFilter and tries to process all the registered providers.

Thanks & Regards,
Chhavi Agarwal
Cloud System Software Group.

From:	Chhavi Agarwal/India/IBM at IBMIN
To:	openstack-dev at lists.openstack.org
Cc:	Shyama Venugopal/India/IBM at IBMIN, Monica O
            Joshi/India/IBM at IBMIN, Imranuddin W Kazi/India/IBM at IBMIN
Date:	12/18/2014 09:25 PM
Subject:	[openstack-dev] [cinder] Multiple Backend for different

Hi All,

As per the below link multi-backend support :-

Its mentioned that we currently only support passing a multi backend
provider per volume_type. "There can be > 1 backend per volume_type, and
the capacity scheduler kicks in and keeps the backends of a particular
volume_type "

Is there a way to support multi backend provider across different
volume_type. For eg if I want my volume_type to have both SVC and LVM
drivers to be passed as my backend provider.

Thanks & Regards,
Chhavi Agarwal
Cloud System Software Group.

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