[openstack-dev] [nova] Plan to consolidate FS-style libvirt volume drivers under a common base class

Matt Riedemann mriedem at linux.vnet.ibm.com
Tue Jun 16 21:29:45 UTC 2015

On 6/16/2015 4:21 PM, Matt Riedemann wrote:
> The NFS, GlusterFS, SMBFS, and Quobyte libvirt volume drivers are all
> very similar.
> I want to extract a common base class that abstracts some of the common
> code and then let the sub-classes provide overrides where necessary.
> As part of this, I'm wondering if we could just have a single
> 'mount_point_base' config option rather than one per backend like we
> have today:
> nfs_mount_point_base
> glusterfs_mount_point_base
> smbfs_mount_point_base
> quobyte_mount_point_base
> With libvirt you can only have one of these drivers configured per
> compute host right?  So it seems to make sense that we could have one
> option used for all 4 different driver implementations and reduce some
> of the config option noise.
> I checked the os-brick change [1] proposed to nova to see if there would
> be any conflicts there and so far that's not touching any of these
> classes so seems like they could be worked in parallel.
> Are there any concerns with this?
> Is a blueprint needed for this refactor?
> [1] https://review.openstack.org/#/c/175569/

I threw together a quick blueprint [1] just for tracking.

I'm assuming I don't need a spec for this.




Matt Riedemann

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