After the 2026-09-24 NH3 power outage every NFS line from nh3-nas failed at
boot: nh3-docker's /mnt/compose and /mnt/backup, and nh3-dev's /mnt/backup.
The NAS is the slowest box to serve NFS, and the plain fstab mounts stayed
down until remounted by hand. nh3-dev's /mnt/smithy already used
x-systemd.automount, and the same boot shows it self-healing on its next
access. playbooks/nh3-nfs-automount.yaml brings the other lines to that
shape (_netdev,nofail,x-systemd.automount,x-systemd.mount-timeout=30).
Hard-mount semantics are unchanged; only WHEN the mount happens moves.
Applied and read back on nh3-docker and nh3-dev: every nh3-nas line carries
automount, each automount unit is active, and each share is NFS-mounted after
access. A second run on nh3-docker is a no-op. The fstab check judges only
errors the rewrite ADDS, because nh3-dev's installer cdrom line has a
pre-existing verify error. The first run caught that and aborted without
writing.
servers/nh3-pve/README.md now lists each guest's expected state after a
power loss: nh3-laser is on-demand and stays off (Prime), pbs-nh3 now has
onboot=1 (it had none and stayed down), and pfi-gx10 is bare metal that
does not auto-power-on.
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