# Runs docker-prune.service every 10 min. It was every 30, and that is how the burst guard never
# fired once: three concurrent Rust builds fill the disk and drain it again well inside a 30-minute
# window, so the poll kept landing on a healthy `df` while jobs died of ENOSPC in between. (An arch
# build failed with `as: BFD assertion fail` — assembler noise for "can't write, No space left on
# device" — and by the time anyone looked, the disk was back to 37% used.)
#
# Ten minutes is a backstop, not the fix. The fix was capacity: the LXC rootfs went 123 G -> 175 G
# on 2026-07-29 (`pct resize 116 rootfs +50G` on home-node-1), which is what actually gives three
# concurrent builds room. RandomizedDelaySec stays low so the guard is prompt.
# Persistent=true catches up after downtime. Install: see the header of docker-prune.service.

[Unit]
Description=Run docker-prune every 10 min (CI runner disk hygiene + cache cap + burst guard)

[Timer]
OnCalendar=*:0/10
RandomizedDelaySec=30
Persistent=true

[Install]
WantedBy=timers.target