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+
+=======================================================
+ ceph-volume-systemd -- systemd ceph-volume helper tool
+=======================================================
+
+.. program:: ceph-volume-systemd
+
+Synopsis
+========
+
+| **ceph-volume-systemd** *systemd instance name*
+
+
+Description
+===========
+:program:`ceph-volume-systemd` is a systemd helper tool that receives input
+from (dynamically created) systemd units so that activation of OSDs can
+proceed.
+
+It translates the input into a system call to ceph-volume for activation
+purposes only.
+
+
+Examples
+========
+Its input is the ``systemd instance name`` (represented by ``%i`` in a systemd
+unit), and it should be in the following format::
+
+    <ceph-volume subcommand>-<extra metadata>
+
+In the case of ``lvm`` a call could look like::
+
+    /usr/bin/ceph-volume-systemd lvm-0-8715BEB4-15C5-49DE-BA6F-401086EC7B41
+
+Which in turn will call ``ceph-volume`` in the following way::
+
+    ceph-volume lvm trigger  0-8715BEB4-15C5-49DE-BA6F-401086EC7B41
+
+Any other subcommand will need to have implemented a ``trigger`` command that
+can consume the extra metadata in this format.
+
+
+Availability
+============
+
+:program:`ceph-volume-systemd` is part of Ceph, a massively scalable,
+open-source, distributed storage system. Please refer to the documentation at
+http://docs.ceph.com/ for more information.
+
+
+See also
+========
+
+:doc:`ceph-osd <ceph-osd>`\(8),