ceph/doc/ceph-volume/index.rst

   1 .. _ceph-volume:
   2
   3 ceph-volume
   4 ===========
   5 Deploy OSDs with different device technologies like lvm or physical disks using
   6 pluggable tools (:doc:`lvm/index` itself is treated like a plugin) and trying to
   7 follow a predictable, and robust way of preparing, activating, and starting OSDs.
   8
   9 :ref:`Overview <ceph-volume-overview>` |
  10 :ref:`Plugin Guide <ceph-volume-plugins>` |
  11
  12
  13 **Command Line Subcommands**
  14 There is currently support for ``lvm``, and plain disks (with GPT partitions)
  15 that may have been deployed with ``ceph-disk``.
  16
  17 * :ref:`ceph-volume-lvm`
  18 * :ref:`ceph-volume-simple`
  19
  20
  21 Migrating
  22 ---------
  23 Starting on Ceph version 12.2.2, ``ceph-disk`` is deprecated. Deprecation
  24 warnings will show up that will link to this page. It is strongly suggested
  25 that users start consuming ``ceph-volume``. There are two paths for migrating:
  26
  27 #. Keep OSDs deployed with ``ceph-disk``: The :ref:`ceph-volume-simple` command
  28    provides a way to take over the management while disabling ``ceph-disk``
  29    triggers.
  30 #. Redeploy existing OSDs with ``ceph-volume``: This is covered in depth on
  31    :ref:`rados-replacing-an-osd`
  32
  33 New deployments
  34 ^^^^^^^^^^^^^^^
  35 For new deployments, :ref:`ceph-volume-lvm` is recommended, it can use any
  36 logical volume as input for data OSDs, or it can setup a minimal/naive logical
  37 volume from a device.
  38
  39 Existing OSDs
  40 ^^^^^^^^^^^^^
  41 If the cluster has OSDs that were provisioned with ``ceph-disk``, then
  42 ``ceph-volume`` can take over the management of these with
  43 :ref:`ceph-volume-simple`. A scan is done on the data device or OSD directory,
  44 and ``ceph-disk`` is fully disabled. Encryption is fully supported.
  45
  46
  47 .. toctree::
  48    :hidden:
  49    :maxdepth: 3
  50    :caption: Contents:
  51
  52    intro
  53    systemd
  54    lvm/index
  55    lvm/activate
  56    lvm/encryption
  57    lvm/prepare
  58    lvm/scan
  59    lvm/systemd
  60    lvm/list
  61    lvm/zap
  62    simple/index
  63    simple/activate
  64    simple/scan
  65    simple/systemd