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Prior to this commit, we didn't install /var/run/ceph as a normal
directory. We used the %ghost directive and created the directory with
a "mkdir" command in %post.
This was lacking in several ways:
1) Simplicy: there is no need to use %ghost; other packages (eg.
mariadb) simply use a normal %dir for their socket directory.
2) RPM does not have control over the permissions of the /var/run/ceph
directory. This does not interact well with "rpm -V". Moreover,
once Ceph itself gets unprivileged user support, RPM itself won't
be able to set the permissions of the directory for a (future)
unprivileged UID.
3) On distributions that use systemd as an init system, /var/run is a
symlink to /run, which is tmpfs. This means that /var/run/ceph does
not persist across reboots on those systems.
Remove the %ghost directive; it makes more sense for RPM to simply
install this directory like the rest of the %files.
Add a "_with_systemd" conditional so we know which distros use systemd
as their init system. Add the /etc/tmpfiles.d/ceph.conf file on those
distros. See
http://www.freedesktop.org/software/systemd/man/tmpfiles.d.html
Signed-off-by: Ken Dreyer <kdreyer@redhat.com>
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