# Configure components

2. Create the LVM physical volume `/dev/sdc`:

       # pvcreate /dev/sdc
       Physical volume "/dev/sdc" successfully created

3. Create the LVM volume group `manila-volumes`:

       # vgcreate manila-volumes /dev/sdc
       Volume group "manila-volumes" successfully created

   The Shared File Systems service creates logical volumes in this volume group.

4. Only instances can access Shared File Systems service volumes. However, the underlying operating system manages the devices associated with the volumes. By default, the LVM volume scanning tool scans the `/dev` directory for block storage devices that contain volumes. If projects use LVM on their volumes, the scanning tool detects these volumes and attempts to cache them which can cause a variety of problems with both the underlying operating system and project volumes. You must reconfigure LVM to scan only the devices that contain the `cinder-volume` and `manila-volumes` volume groups. Edit the `/etc/lvm/lvm.conf` file and complete the following actions:

   - In the `devices` section, add a filter that accepts the `/dev/sdb` and `/dev/sdc` devices and rejects all other devices:

         devices {
         ...
         filter = [ "a/sdb/", "a/sdc", "r/.*/"]

     Warning

     If your storage nodes use LVM on the operating system disk, you must also add the associated device to the filter. For example, if the `/dev/sda` device contains the operating system:

         filter = [ "a/sda/", "a/sdb/", "a/sdc", "r/.*/"]

     Similarly, if your compute nodes use LVM on the operating system disk, you must also modify the filter in the `/etc/lvm/lvm.conf` file on those nodes to include only the operating system disk. For example, if the `/dev/sda` device contains the operating system:

         filter = [ "a/sda/", "r/.*/"]

# Configure components

1. Edit the `/etc/manila/manila.conf` file and complete the following actions:

   - In the `[DEFAULT]` section, enable the LVM driver and the NFS protocol:

         [DEFAULT]
         ...
         enabled_share_backends = lvm
         enabled_share_protocols = NFS

     Note

     Back end names are arbitrary. As an example, this guide uses the name of the driver.

   - In the `[lvm]` section, configure the LVM driver:

         [lvm]
         share_backend_name = LVM
         share_driver = manila.share.drivers.lvm.LVMShareDriver
         driver_handles_share_servers = False
         lvm_share_volume_group = manila-volumes
         lvm_share_export_ips = MANAGEMENT_INTERFACE_IP_ADDRESS

     Replace `MANAGEMENT_INTERFACE_IP_ADDRESS` with the IP address of the management network interface on your storage node. The value of this option can be a comma separated string of one or more IP addresses. In the example architecture shown below, the address would be 10.0.0.41:

     Hardware requirements.

this page last updated: 2026-03-20 00:20:57

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