LVM share driver¶

Prerequisites¶

The following packages must be installed on the same host with manila-share service:

• NFS server
• Samba server >= 3.2.0
• LVM2 >= 2.02.66

Services must be up and running, ports used by the services must not be blocked. A node with manila-share service should be accessible to share service users.

LVM should be preconfigured. By default, LVM driver expects to find a volume group named lvm-shares. This volume group will be used by the driver for share provisioning. It should be managed by node administrator separately.

Shared File Systems service driver configuration setting¶

To use the driver, one should set up a corresponding back end. A driver must be explicitly specified as well as export IP address. A minimal back-end specification that will enable LVM share driver is presented below:

[LVM_sample_backend]
driver_handles_share_servers = False
share_driver = manila.share.drivers.lvm.LVMShareDriver
lvm_share_export_ip = 1.2.3.4

In the example above, lvm_share_export_ip is the address to be used by clients for accessing shares. In the simplest case, it should be the same as host’s address.

Supported shared file systems and operations¶

The driver supports CIFS and NFS shares.

The following operations are supported:

• Create a share.

• Delete a share.

• Allow share access.

  Note the following limitations:

  • Only IP access type is supported for NFS.

• Deny share access.

• Create a snapshot.

• Delete a snapshot.

• Create a share from a snapshot.

• Extend a share.

Known restrictions¶

• LVM driver should not be used on a host running Neutron agents, simultaneous usage might cause issues with share deletion (shares will not get deleted from volume groups).

Driver options¶

The following table contains the configuration options specific to this driver.