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3.1 KiB
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99 lines
3.1 KiB
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2. Create the LVM physical volume ``/dev/sdc``:
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.. code-block:: console
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# pvcreate /dev/sdc
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Physical volume "/dev/sdc" successfully created
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#. Create the LVM volume group ``manila-volumes``:
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.. code-block:: console
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# vgcreate manila-volumes /dev/sdc
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Volume group "manila-volumes" successfully created
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The Shared File Systems service creates logical volumes in this volume
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group.
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#. Only instances can access Shared File Systems service volumes. However,
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the underlying operating system manages the devices associated with
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the volumes. By default, the LVM volume scanning tool scans the
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``/dev`` directory for block storage devices that
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contain volumes. If projects use LVM on their volumes, the scanning
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tool detects these volumes and attempts to cache them which can cause
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a variety of problems with both the underlying operating system
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and project volumes. You must reconfigure LVM to scan only the devices
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that contain the ``cinder-volume`` and ``manila-volumes`` volume groups.
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Edit the ``/etc/lvm/lvm.conf`` file and complete the following actions:
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* In the ``devices`` section, add a filter that accepts the
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``/dev/sdb`` and ``/dev/sdc`` devices and rejects all other devices:
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.. code-block:: ini
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devices {
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...
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filter = [ "a/sdb/", "a/sdc", "r/.*/"]
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.. warning::
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If your storage nodes use LVM on the operating system disk, you
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must also add the associated device to the filter. For example,
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if the ``/dev/sda`` device contains the operating system:
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.. code-block:: ini
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filter = [ "a/sda/", "a/sdb/", "a/sdc", "r/.*/"]
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Similarly, if your compute nodes use LVM on the operating
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system disk, you must also modify the filter in the
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``/etc/lvm/lvm.conf`` file on those nodes to include only
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the operating system disk. For example, if the ``/dev/sda``
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device contains the operating system:
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.. code-block:: ini
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filter = [ "a/sda/", "r/.*/"]
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Configure components
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--------------------
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#. Edit the ``/etc/manila/manila.conf`` file and complete the following
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actions:
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* In the ``[DEFAULT]`` section, enable the LVM driver and the NFS
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protocol:
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.. code-block:: ini
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[DEFAULT]
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...
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enabled_share_backends = lvm
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enabled_share_protocols = NFS
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.. note::
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Back end names are arbitrary. As an example, this guide uses the name
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of the driver.
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* In the ``[lvm]`` section, configure the LVM driver:
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.. code-block:: ini
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[lvm]
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share_backend_name = LVM
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share_driver = manila.share.drivers.lvm.LVMShareDriver
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driver_handles_share_servers = False
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lvm_share_volume_group = manila-volumes
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lvm_share_export_ip = MANAGEMENT_INTERFACE_IP_ADDRESS
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Replace ``MANAGEMENT_INTERFACE_IP_ADDRESS`` with the IP address
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of the management network interface on your storage node,
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typically 10.0.0.41 for the first node in the example architecture
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shown below:
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.. figure:: figures/hwreqs.png
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:alt: Hardware requirements
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**Hardware requirements**.
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