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79 lines
2.1 KiB
ReStructuredText
.. _ceph-volume:
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ceph-volume
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===========
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Deploy OSDs with different device technologies like lvm or physical disks using
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pluggable tools (:doc:`lvm/index` itself is treated like a plugin) and trying to
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follow a predictable, and robust way of preparing, activating, and starting OSDs.
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:ref:`Overview <ceph-volume-overview>` |
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:ref:`Plugin Guide <ceph-volume-plugins>` |
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**Command Line Subcommands**
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There is currently support for ``lvm``, and plain disks (with GPT partitions)
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that may have been deployed with ``ceph-disk``.
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* :ref:`ceph-volume-lvm`
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* :ref:`ceph-volume-simple`
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**Node inventory**
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The :ref:`ceph-volume-inventory` subcommand provides information and metadata
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about a nodes physical disk inventory.
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Migrating
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---------
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Starting on Ceph version 13.0.0, ``ceph-disk`` is deprecated. Deprecation
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warnings will show up that will link to this page. It is strongly suggested
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that users start consuming ``ceph-volume``. There are two paths for migrating:
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#. Keep OSDs deployed with ``ceph-disk``: The :ref:`ceph-volume-simple` command
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provides a way to take over the management while disabling ``ceph-disk``
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triggers.
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#. Redeploy existing OSDs with ``ceph-volume``: This is covered in depth on
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:ref:`rados-replacing-an-osd`
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For details on why ``ceph-disk`` was removed please see the :ref:`Why was
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ceph-disk replaced? <ceph-disk-replaced>` section.
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New deployments
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^^^^^^^^^^^^^^^
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For new deployments, :ref:`ceph-volume-lvm` is recommended, it can use any
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logical volume as input for data OSDs, or it can setup a minimal/naive logical
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volume from a device.
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Existing OSDs
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^^^^^^^^^^^^^
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If the cluster has OSDs that were provisioned with ``ceph-disk``, then
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``ceph-volume`` can take over the management of these with
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:ref:`ceph-volume-simple`. A scan is done on the data device or OSD directory,
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and ``ceph-disk`` is fully disabled. Encryption is fully supported.
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.. toctree::
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:hidden:
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:maxdepth: 3
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:caption: Contents:
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intro
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systemd
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inventory
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lvm/index
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lvm/activate
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lvm/batch
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lvm/encryption
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lvm/prepare
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lvm/create
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lvm/scan
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lvm/systemd
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lvm/list
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lvm/zap
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simple/index
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simple/activate
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simple/scan
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simple/systemd
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