[systemd-devel] successful mount starts a service - how?

[lejeczek]

hi guys.

I'm fiddling with it but have run out of options/ideas.
What I would like to have is systemd starts a service when a 
device, in my case a crypt-luks device, gets mounted which 
mount would happen by manual 'cryptsetup open'
I see when that manual action takes place then systemd 
changes status of a home.mount (which is in fstab) to 
"active" - and it's here where I hope systemd would 
auto-start a service.
Is such a "simple" thing possible?
many thanks, L