Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/doc/ceph-volume/lvm/systemd.rst b/doc/ceph-volume/lvm/systemd.rst
new file mode 100644
index 000000000..30260de7e
--- /dev/null
+++ b/doc/ceph-volume/lvm/systemd.rst
@@ -0,0 +1,28 @@
+.. _ceph-volume-lvm-systemd:
+
+systemd
+=======
+Upon startup, it will identify the logical volume using :term:`LVM tags`,
+finding a matching ID and later ensuring it is the right one with
+the :term:`OSD uuid`.
+
+After identifying the correct volume it will then proceed to mount it by using
+the OSD destination conventions, that is::
+
+    /var/lib/ceph/osd/<cluster name>-<osd id>
+
+For our example OSD with an id of ``0``, that means the identified device will
+be mounted at::
+
+
+    /var/lib/ceph/osd/ceph-0
+
+
+Once that process is complete, a call will be made to start the OSD::
+
+    systemctl start ceph-osd@0
+
+The systemd portion of this process is handled by the ``ceph-volume lvm
+trigger`` sub-command, which is only in charge of parsing metadata coming from
+systemd and startup, and then dispatching to ``ceph-volume lvm activate`` which
+would proceed with activation.