I see various systemd-controlled daemons running under the lp account Notably, the tracker service is running and trying to index files for the lp account.
$ pstree lp
systemd─┬─(sd-pam)
├─dbus-daemon
├─goa-daemon───3*[{goa-daemon}]
├─goa-identity-se───2*[{goa-identity-se}]
├─gvfs-afc-volume───3*[{gvfs-afc-volume}]
├─gvfs-goa-volume───2*[{gvfs-goa-volume}]
├─gvfs-gphoto2-vo───2*[{gvfs-gphoto2-vo}]
├─gvfs-mtp-volume───2*[{gvfs-mtp-volume}]
├─gvfs-udisks2-vo───3*[{gvfs-udisks2-vo}]
├─gvfsd───2*[{gvfsd}]
├─gvfsd-fuse───5*[{gvfsd-fuse}]
└─tracker-miner-f───4*[{tracker-miner-f}]
For example, I see a tracker* service is running under the lp user account, and it's writing tracker database files to /var/spool/lpd/{.cache,.local}.
My question is: Is there a clean way to disable (mask) systemd service units for a specific user account, if that user account is a non-login account?
I'm running Ubuntu 20.04 and systemd 245 (245.4-4ubuntu3.13), in case that's relevant.
