mirror of
https://github.com/ceph/ceph
synced 2024-12-21 10:54:42 +00:00
29 lines
872 B
ReStructuredText
29 lines
872 B
ReStructuredText
|
.. _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.
|