ceph-volume-systemd – systemd ceph-volume helper tool¶
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.
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:
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.
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.