GPFS driver uses IBM General Parallel File System (GPFS), a
high-performance, clustered file system, developed by IBM, as the
storage backend for serving file shares to the manila clients.

Supported shared filesystems

• NFS (access by IP)

Supported Operations

• Create NFS Share
• Delete NFS Share
• Create Share Snapshot
• Delete Share Snapshot
• Create Share from a Share Snapshot
• Allow NFS Share access
  • Currently only ‘rw’ access level is supported
• Deny NFS Share access

Requirements

• Install GPFS with server license, version >= 2.0, on the storage
  backend.
• Install Kernel NFS or Ganesha NFS server on the storage backend
  servers.
• If using Ganesha NFS, currently NFS Ganesha v1.5 and v2.0 are
  supported.
• Create a GPFS cluster and create a filesystem on the cluster, that
  will be used to create the manila shares.
• Enable quotas for the GPFS file system (mmchfs -Q yes).
• Establish network connection between the manila host and the storage
  backend.

Manila driver configuration
setting

The following parameters in the manila configuration file need to be
set:

• share_driver =
  manila.share.drivers.ibm.gpfs.GPFSShareDriver
• gpfs_share_export_ip = <IP to be
  added to GPFS export string>
• If the backend GPFS server is not running on the manila host
  machine, the following options are required to SSH to the remote GPFS
  backend server:

  • gpfs_ssh_login = <GPFS server
    SSH login name>

    and one of the following settings is required to execute commands
    over SSH:

  • gpfs_ssh_private_key = <path to
    GPFS server SSH private key for login>

  • gpfs_ssh_password = <GPFS
    server SSH login password>

The following configuration parameters are optional:

• gpfs_mount_point_base = <base
  folder where exported shares are located>
• gpfs_nfs_server_type =
  <KNFS|GNFS>
• gpfs_nfs_server_list = <list of
  the fully qualified NFS server names>
• gpfs_ssh_port = <ssh port
  number>

Restart of manila-share service is needed for the configuration
changes to take effect.

Known Restrictions

• The driver does not support a segmented-network multi-tenancy model
  but instead works over a flat network where the tenants share a
  network.
• While using remote GPFS node, with Ganesha NFS,
  ‘gpfs_ssh_private_key’ for remote login to the GPFS node must be
  specified and there must be a passwordless authentication already setup
  between the manila share service and the remote GPFS node.

The manila.share.drivers.ibm.gpfs
Module