blob: 789dda434109ffbdefeba74030b18f34bd777f3a (plain
title: Mounting music dir before MPD
tags: systemd, mpd, config
date: 2013-11-24 14:03
Systemd allows you to specify a program to run before running the main
daemon (or program) with `ExecStartPre`. This can, for instance, be
used to run a mount command before starting `mpd`. By adding under the
Now I have already setup my `fstab` to know what to mount on
`/mnt/music`, but of course that shouldn't be necessary. According to
the `systemd.service(5)` man page it uses the same syntax as
`ExecStart`, which tells us that one must use absolute file names
since no shell is used to start them.
This also has the effect of stopping the `ExecStart` part from the
`.service` from being executed if the `ExecStartPre` doesn't finish
successfully. Which works out great in my case as I don't want to
start `mpd` if my music directory didn't mount. If you want to ignore
the exit status of (one of) the `ExecStartPre` commands you can prefix
it with a `-`, for example:
Which would continue running the `ExecStart` even if mounting failed.
Also know that there can be multiple `ExecStartPre` options and they
will be executed serially, so for example:
This would fail if `/mnt/music` doesn't mount, but would continue just
fine if `/mnt/music` did and `/mnt/music2` didn't.