GPFS driver uses IBM General Parallel File System (GPFS), a high-performance, clustered file system, developed by IBM, as the storage back end for serving file shares to the Shared File Systems service clients. NFS (access by IP) 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. Install GPFS with server license, version >= 2.0, on the storage back end. Install Kernel NFS or Ganesha NFS server on the storage back-end 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 Shared File Systems service shares. Enable quotas for the GPFS file system (mmchfs -Q yes). Establish network connection between the Shared File Systems Service host and the storage back end. The following parameters in the Shared File Systems service 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 back-end GPFS server is not running on the Shared File Systems service host machine, the following options are required to SSH to the remote GPFS back-end 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> knfs_export_options = <options to use when creating a share using kernel> <NFS server> Restart of manila-share service is needed for the configuration changes to take effect. 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. Configuration options specific to this driver are documented here: .