Other instances:

Will not benefit from inotify:

• Pipe message wait in keepalived-fifo.py — may benefit from select perhaps.
• IPsec waiting for DHCP ­— has to wait, though it makes me wonder if "wait for address" should be a reusable utility function.
• bridge script waiting for interfaces to settle — that's an especially long wait, likely justified, but can we make it more granular?

May benefit:

• IPsec waiting for the vici socket — we can probably wait for charon to open that file for writing.
• format script waiting for partition backup to complete — waiting for the backup partition file may be a good idea, but the cmd function is itself synchronous, so it's not clear why a sleep was needed at all.
• IPsec config script waiting for the charon PID file (my experimental change, needs testing)

Debatable:

• script waiting for the tuned daemon to come up — can be replaced with waiting for its PID file to get closed for writing, but checking with systemd may be more reliable.
• HTTP API waiting for... something — from the comment I'm not sure what exactly it's waiting for and why,