# The io controller is what makes IOWeight= mean anything, and systemd does not
# enable it below `user.slice` by default: with io accounting off, `io` never
# appears in `user.slice/cgroup.subtree_control`, so no rootless container can
# have an `io.weight` file and `IOWeight=` in a quadlet is silently inert.
# Measured on Dankserver 2026-10-31: setting this property flipped
# `user.slice/cgroup.subtree_control` from `cpu memory pids` to `cpu io memory
# pids` immediately, with nothing restarted.
#
# This is half the fix; the other half is delegating io to user@1000.service
# (user@1000.service.d/io-delegate.conf). Both must be in place before a reboot,
# because the delegation is read when the user manager starts. Law and the
# verification command: [[Quadlet Lifecycle]].
[Slice]
IOAccounting=yes