Dear tgt maintainer,

the postinst maintscript manually checks whether tgtd is running and
saves its PID to /run/tgt.pid. This is not needed in systems that run
systemd and it is also not safe in chroots and similar environments.
This check also uses pidof, which will also be made non-essential shortly.

You can find a MR that fixes this issue at

https://salsa.debian.org/debian/tgt/-/merge_requests/5

Regards,