From: Alfredo Deza Date: Tue, 8 May 2018 17:47:11 +0000 (-0400) Subject: doc/ceph-volume high-level description of simple activate at index.rst X-Git-Tag: v14.0.0~187^2~2 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=dd6f368158db7f102b485179166ebe73d6ea622f;p=ceph.git doc/ceph-volume high-level description of simple activate at index.rst Signed-off-by: Alfredo Deza --- diff --git a/doc/ceph-volume/simple/index.rst b/doc/ceph-volume/simple/index.rst index 6f2534a738e3..315dea99a106 100644 --- a/doc/ceph-volume/simple/index.rst +++ b/doc/ceph-volume/simple/index.rst @@ -17,3 +17,16 @@ Implements the functionality needed to manage OSDs from the ``simple`` subcomman By *taking over* management, it disables all ``ceph-disk`` systemd units used to trigger devices at startup, relying on basic (customizable) JSON configuration and systemd for starting up OSDs. + +This process involves two steps: + +#. :ref:`Scan ` the running OSD or the data device +#. :ref:`Activate ` the scanned OSD + +The scanning will infer everything that ``ceph-volume`` needs to start the OSD, +so that when activation is needed, the OSD can start normally without getting +interference from ``ceph-disk``. + +As part of the activation process the systemd units for ``ceph-disk`` in charge +of reacting to ``udev`` events, are linked to ``/dev/null`` so that they are +fully inactive.