Open Stack

Hi,

The first prototype of the multi-tenant capable GlusterFS driver would piggyback on the generic driver, which implements the network plumbing model [1]. We'd have NFS-Ganesha server running on the service VM. The Ganesha server would mediate access to the GlusterFS backend (or any other Ganesha compatible clustered file system backends such as CephFS, GPFS, among others), while the tenant network isolation would be done by the service VM networking [2][3]. To implement this idea, we'd have to reuse much of the generic driver code especially that related to the service VM networking.

So we were wondering whether the current generic driver can be made more modular? The service VM could not just be used to expose a formatted cinder volume, but instead be used as an instrument to convert the existing single tenant drivers (with slight modification) - LVM, GlusterFS - to a multi-tenant ready driver. Do you see any issues with this thought - generic driver, a modular multi-tenant driver that implements the network plumbing model? And is this idea feasible?


[1] https://wiki.openstack.org/wiki/Manila_Networking
[2] https://docs.google.com/document/d/1WBjOq0GiejCcM1XKo7EmRBkOdfe4f5IU_Hw1ImPmDRU/edit
[3] https://docs.google.com/a/mirantis.com/drawings/d/1Fw9RPUxUCh42VNk0smQiyCW2HGOGwxeWtdVHBB5J1Rw/edit

Thanks,

Ram