I use tomb to store some files. I want to use a systemd .automount unit so that whenever I try to access these files, the tomb is automatically mounted. However, tombs are not mounted with mount, they are tomb open does its own specialized setup (of which mounting is only one part).
Is there any way to specify a custom command for systemd .mount/.automount units? Failing that, is it possible to use other units for the same purpose?
Antwort1
You could try using a mount helper (see man 8 mount). If you specify the fs type as, say, mytombfs then when you or systemd mounts the filesystem it will run /sbin/mount.mytombfs passing it most of the options needed. This script can then do whatever you need to, and eventually call /bin/mount "$@" to really mount the device. For example, the .mount unit
[Mount]
What=/dev/sdc1
Where=/a/b
Type=mytombfs
Options=x-systemd.automount,auto,noatime,uid=meuh
will run
/sbin/mount.mytombfs /dev/sdc1 /a/b -o rw,noatime,uid=1000