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Merge pull request #48665 from zdover23/wip-doc-2022-10-30-ceph-volume-lvm-prepare-datri-notes

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doc/ceph-volume: improve prepare.rst

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>
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doc/ceph-volume/lvm/prepare.rst
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@ -2,10 +2,8 @@
``prepare``
===========
This subcommand facilitates the setup of :term:`filestore` or
:term:`bluestore`. Before you run ``ceph-volume lvm prepare``, we recommend
that you provision a logical volume. Then you can run ``prepare`` on that
logical volume.
Before you run ``ceph-volume lvm prepare``, we recommend that you provision a
logical volume. Then you can run ``prepare`` on that logical volume.
``prepare`` adds metadata to logical volumes but does not alter them in any
other way.
@ -16,9 +14,9 @@ other way.
``prepare`` uses :term:`LVM tags` to assign several pieces of metadata to a
logical volume. Volumes tagged in this way are easier to identify and easier to
use with Ceph. :term:`LVM tags` identify logical volumes by the role that they
play in the Ceph cluster (for example: journal, filestore, or bluestore).
play in the Ceph cluster (for example: BlueStore data or BlueStore WAL+DB).
:term:`Bluestore<bluestore>` is the default backend. Ceph permits changing
:term:`BlueStore<bluestore>` is the default backend. Ceph permits changing
the backend, which can be done by using the following flags and arguments:
* :ref:`--filestore <ceph-volume-lvm-prepare_filestore>`