status=203/EXEC means the exec path didn't resolve. systemd
expands %h (home) at parse time but does NOT expand ${VAR}
in the ExecStart executable position — only in ExecStart args.
Rewrote to use %h/clawstor-deploy/claw-fuse directly.
Deploy artifact — not built into the binary tree. `deploy/systemd/
clawstor-fuse.service` + README with the install recipe.
Unit shape:
* Type=simple, blocks on the FUSE binary (unmount = SIGTERM).
* ExecStartPre = mkdir -p mount, best-effort lazy unmount of any
stale prior mount (guards against a hard SIGKILL leaving the
kernel with a dangling mount).
* Restart=on-failure, RestartSec=5 — recover from transient IO
errors without operator involvement.
* Environment= for CLAWSTOR_FUSE_BIN / DATA / MOUNT so a
`systemctl edit` drop-in retargets without editing the unit file.
Dependency chain: clawstor-fuse.service After= + Wants=
clawstor-cluster.service. FUSE reads only the on-disk state so
this is technically not needed for correctness — but keeps the
mount from spinning up on a node where the daemon is broken.
Omar Sobh