grizzly: new cinder driver for glusterFS

[Tom Fifield]

If https://review.openstack.org/#/c/21342/ is merged, a new driver for cinder is added for glusterFS

This driver enables use of GlusterFS in a similar fashion
as the NFS driver. It supports basic volume operations,
and like NFS, does not support snapshot/clone.

To enable, set volume_driver to
cinder.volume.drivers.glusterfs.GlusterfsDriver

Note that this requires a Nova libvirt GlusterFS driver
as well.

Adds config options: glusterfs_shares_config,
glusterfs_mount_point_base, glusterfs_disk_util, and
glusterfs_sparsed_volumes.

732 # Options defined in cinder.volume.drivers.glusterfs
   733 #
   734
   735 # File with the list of available gluster shares (string
   736 # value)
   737 #glusterfs_shares_config=<None>
   738
   739 # Base dir where gluster expected to be mounted (string value)
   740 #glusterfs_mount_point_base=$state_path/mnt
   741
   742 # Use du or df for free space calculation (string value)
   743 #glusterfs_disk_util=df
   744
   745 # Create volumes as sparsed files which take no space.If set
   746 # to False volume is created as regular file.In such case
   747 # volume creation takes a lot of time. (boolean value)
   748 #glusterfs_sparsed_volumes=true

[Tom Fifield (fifieldt)]

This nova change also:

 154 'glusterfs='
   155 'nova.virt.libvirt.volume.LibvirtGlusterfsVolumeDriver'

https://review.openstack.org/#/c/21357

[Tom Fifield (fifieldt)]

Still in review

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/25767

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/25767
Committed: http://github.com/openstack/openstack-manuals/commit/06dd96a99251a839e0b29bfceec6798d0bbcc5c5
Submitter: Jenkins
Branch: master

commit 06dd96a99251a839e0b29bfceec6798d0bbcc5c5
Author: Joe Topjian <email address hidden>
Date: Fri Mar 29 16:51:07 2013 -0600

    Added documentation about GlusterFS volume support.

    A small mention of Gluster was added to getstart.xml. A full description
    of its options was added to the Block Storage guide. Finally, a table
    was modified in the Ops guide to show it now has volume support.

    Patchset adds more explanation about sparsed volumes settings.
    Merge with master.

    Change-Id: I36cb344e63f1bddf4125084e02ac507f56591a11
    Fixes: bug #1117767