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author | Qiaowei Ren <qiaowei.ren@intel.com> | 2018-01-04 13:43:33 +0800 |
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committer | Qiaowei Ren <qiaowei.ren@intel.com> | 2018-01-05 11:59:39 +0800 |
commit | 812ff6ca9fcd3e629e49d4328905f33eee8ca3f5 (patch) | |
tree | 04ece7b4da00d9d2f98093774594f4057ae561d4 /src/ceph/doc/ceph-volume/lvm/systemd.rst | |
parent | 15280273faafb77777eab341909a3f495cf248d9 (diff) |
initial code repo
This patch creates initial code repo.
For ceph, luminous stable release will be used for base code,
and next changes and optimization for ceph will be added to it.
For opensds, currently any changes can be upstreamed into original
opensds repo (https://github.com/opensds/opensds), and so stor4nfv
will directly clone opensds code to deploy stor4nfv environment.
And the scripts for deployment based on ceph and opensds will be
put into 'ci' directory.
Change-Id: I46a32218884c75dda2936337604ff03c554648e4
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
Diffstat (limited to 'src/ceph/doc/ceph-volume/lvm/systemd.rst')
-rw-r--r-- | src/ceph/doc/ceph-volume/lvm/systemd.rst | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/ceph/doc/ceph-volume/lvm/systemd.rst b/src/ceph/doc/ceph-volume/lvm/systemd.rst new file mode 100644 index 0000000..30260de --- /dev/null +++ b/src/ceph/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. |