Files

T

Julien LutranandClaude Opus 5 203728674f nuc: media over NFS from nas, on-demand role, i915 and input traps

nuc keeps only what needs its iGPU. blocky, privoxy and transmission-bt
moved to nas so the box can be powered off when not watching Jellyfin or
using the Spotify kiosk.

- /srv/media is now an NFSv4 mount from nas; jellyfin-server reads it
  with shift=false (idmapped mounts are unsupported on NFS, as the
  container doc already noted for CIFS) and readonly=true
- replication to nas is a systemd timer with Persistent=true, not cron —
  an on-demand host misses its 03:30 window and cron cannot catch up

Two failures documented in full, both diagnosed from the wrong layer
first:

- booting with the TV connected and powered on kills the i915 probe
  (drm_WARN_ON in intel_modeset_setup_hw_state), so /dev/dri never
  appears, snd_hda_intel deferred-probes forever holding the PCI device
  lock, and incusd blocks in sriov_numvfs_show — no container starts at
  all, including LAN DNS. Identical on 6.12.107 and 6.12.105.
- the kiosk input gid mismatch is real but was NOT the cause of the
  2026-08-30 outage (flat K400 batteries were); seatd opens input devices
  as root, so kiosk group membership is not on that path. Records the
  one-line raw capture that settles hardware-vs-software immediately.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-08-30 23:53:30 +02:00

2.7 KiB

Raw Blame History

Homelab: nuc

Incus host on the LAN — on-demand: since 2026-08-30 it only needs to run when watching Jellyfin or using the Spotify Connect kiosk. Everything always-on (blocky/DNS, privoxy, transmission-bt) moved to nas, which is why nuc can now be powered off.

⚠️ Powering nuc off has backup consequences — its 03:30 replication to nas only runs while it is up. See nas-install.md §9.

Debian 13, Intel Alder Lake-N (iGPU i915, shared by both Jellyfin containers) — bare-metal reinstall: nuc-install.md
Instances are bridged onto the LAN (192.168.0.0/24)
Storage: ZFS pool data on the SSD (all instance disks). The USB 4 TB and its pool left nuc on 2026-08-30 — the enclosure's JMicron bridge was suspending the pool (usb4t-dropouts.md); the disk now sits on direct SATA in nas as pool tank.
Media library: /srv/media is now an NFSv4 mount from nas (192.168.0.4:/media, read-only). jellyfin-server stays here for the iGPU and reads it with shift=false (jellyfin-server.md).
Backups: nuc and nas cross-replicate — nuc pushes all its instances to nas:nucbackup at 03:30, nas pushes its own to nuc:nasbackup at 04:00, so neither host's instances depend on that host surviving (nas/nas-install.md §9). The ks4 pull leg moved to nas as well (ks2/nas-seed.md), so nuc no longer runs a WireGuard tunnel.
⚠️ Never reboot nuc with the display powered on — the i915 probe dies and takes every container with it (including LAN DNS). Symptoms and fix: jellyfin-client.md

Instances

Name	IP	Doc	Features
jellyfin-server	192.168.0.5	✅	unprivileged, autostart; iGPU render node (`gpu` device, render gid) for QSV/VAAPI transcoding; `/srv/media` disk device (NFS from nas, `shift=false`, read-only); proxy device → host :8096
jellyfin-client	192.168.0.6	✅	privileged, autostart; full iGPU (`gpu` device, gid 44) → HDMI kiosk (cage + Jellyfin Media Player); custom `raw.lxc` (bind `/dev/snd`, `/dev/input`, host `/run/udev`); Pioneer USB audio as ALSA default; FR keymap; go-librespot Spotify Connect ("Pioneer A-70")
homeassistant	(stopped)	—	virtual machine, 50 GiB root disk on pool `data`

Moved to nas on 2026-08-30: transmission-bt (next to the media dataset it writes to), plus blocky and privoxy so LAN DNS and the proxy survive nuc being shut down.

2.7 KiB Raw Blame History

Homelab: nuc

Instances

2.7 KiB

Raw Blame History