Start a systemd service after a device has been mounted
systemd
has a specific directive for this case, called RequiredMountsFor
; see man systemd.directives
.
The usage would be RequiresMountsFor=[mountpoint]
, e.g. RequiresMountsFor=/var
.
You need to adjust dependencies in your .service's Unit
section:
On centos:
Requires=mdmonitor.service local-fs.target
After=mdmonitor.service local-fs.target
On other distrib, it could be:
Requires=mdadm.service local-fs.target
After=mdadm.service local-fs.target
The raid service file should execute /sbin/mdadm --monitor --scan
source:http://www.freedesktop.org/software/systemd/man/systemd.unit.html