feat: add ugreen nas leds
This commit is contained in:
@@ -15,6 +15,7 @@ in {
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./modules/jellyfin.nix
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./modules/jellyfin.nix
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./modules/power-management.nix
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./modules/power-management.nix
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./modules/disk-monitoring.nix
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./modules/disk-monitoring.nix
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./modules/ugreen-leds.nix
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./hardware-configuration.nix
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./hardware-configuration.nix
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];
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];
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285
hosts/nas/modules/ugreen-leds.nix
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285
hosts/nas/modules/ugreen-leds.nix
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@@ -0,0 +1,285 @@
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# UGREEN DXP4800 LED control
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# Based on https://github.com/miskcoo/ugreen_leds_controller
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{ config, lib, pkgs, ... }:
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let
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# Disk mapping: ata port -> LED name
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# DXP4800 has bays 1-4, currently bays 2 and 4 are populated
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diskMapping = {
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# ata-2 (sdb) -> disk2
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"2" = "disk2";
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# ata-4 (sdc) -> disk4
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"4" = "disk4";
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};
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# LED colors (R G B)
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colors = {
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healthy = "0 255 0"; # Green
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activity = "0 255 0"; # Green blink
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standby = "0 0 255"; # Dim blue when sleeping
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fail = "255 0 0"; # Red
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network = "0 255 0"; # Green
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power = "255 255 255"; # White
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};
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brightness = 255;
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standbyBrightness = 30; # Dim when in standby
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refreshInterval = "0.1"; # Seconds between activity checks
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powerCheckInterval = 30; # Seconds between power state checks
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# Script to initialize LEDs on boot
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initLedsScript = pkgs.writeShellScript "ugreen-leds-init" ''
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set -euo pipefail
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PATH="${lib.makeBinPath [ pkgs.ugreen-leds-cli ]}:$PATH"
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# Wait for i2c device to be available
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for i in $(seq 1 30); do
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if [ -e /dev/i2c-0 ]; then
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break
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fi
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sleep 1
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done
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# Initialize power LED - solid white
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ugreen_leds_cli power -on -color ${colors.power} -brightness ${toString brightness} || true
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# Initialize network LED - will be controlled by netdevmon
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ugreen_leds_cli netdev -off || true
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# Initialize disk LEDs based on mapping
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${lib.concatStringsSep "\n" (lib.mapAttrsToList (ata: led: ''
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ugreen_leds_cli ${led} -off || true
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'') diskMapping)}
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echo "UGREEN LEDs initialized"
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'';
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# Disk activity monitoring script
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diskMonitorScript = pkgs.writeShellScript "ugreen-diskiomon" ''
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set -euo pipefail
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PATH="${lib.makeBinPath [ pkgs.ugreen-leds-cli pkgs.coreutils pkgs.gnugrep pkgs.gawk pkgs.smartmontools pkgs.hdparm ]}:$PATH"
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# Build device -> LED mapping by checking ata ports
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declare -A devices
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declare -A diskio_data
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declare -A disk_healthy
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declare -A disk_standby
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# Discover disks based on ata port mapping
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for path in /dev/disk/by-path/pci-*-ata-*; do
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[ -e "$path" ] || continue
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# Skip partitions
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[[ "$path" == *-part* ]] && continue
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# Extract ata port number (e.g., ata-2 -> 2)
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ata_port=$(echo "$path" | grep -oP 'ata-\K[0-9]+' | head -1)
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case "$ata_port" in
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${lib.concatStringsSep "\n " (lib.mapAttrsToList (ata: led: ''
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${ata})
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device=$(readlink -f "$path")
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short_name=$(basename "$device")
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devices["${led}"]="$short_name"
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echo "Mapped $short_name (ata-${ata}) -> ${led}"
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;;'') diskMapping)}
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esac
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done
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if [ ''${#devices[@]} -eq 0 ]; then
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echo "No disks found matching ATA ports, exiting"
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exit 1
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fi
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# Set initial LED state for discovered disks
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for led in "''${!devices[@]}"; do
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device="''${devices[$led]}"
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# Check SMART health (this will wake the disk at boot, which is acceptable)
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if smartctl -H "/dev/$device" 2>/dev/null | grep -q "PASSED"; then
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disk_healthy["$led"]=1
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ugreen_leds_cli "$led" -on -color ${colors.healthy} -brightness ${toString brightness} || true
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else
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disk_healthy["$led"]=0
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ugreen_leds_cli "$led" -on -color ${colors.fail} -brightness ${toString brightness} || true
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fi
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# Initialize tracking
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diskio_data["$led"]=""
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disk_standby["$led"]=0
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done
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echo "Starting disk activity monitoring for ''${#devices[@]} disk(s)"
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# Function to update LED based on current state
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update_led() {
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local led="$1"
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local device="''${devices[$led]}"
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# Check power state without waking disk
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local power_state
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power_state=$(hdparm -C "/dev/$device" 2>/dev/null | grep -oP '(standby|active/idle|active|idle)' | head -1 || echo "unknown")
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if [[ "$power_state" == "standby" ]]; then
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if [[ "''${disk_standby[$led]}" != "1" ]]; then
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# Disk just went to standby - dim the LED
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disk_standby["$led"]=1
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ugreen_leds_cli "$led" -on -color ${colors.standby} -brightness ${toString standbyBrightness} || true
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echo "Disk $device entered standby, dimming LED"
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fi
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else
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if [[ "''${disk_standby[$led]}" == "1" ]]; then
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# Disk woke up - restore health-based color
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disk_standby["$led"]=0
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if [[ "''${disk_healthy[$led]}" == "1" ]]; then
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ugreen_leds_cli "$led" -on -color ${colors.healthy} -brightness ${toString brightness} || true
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else
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ugreen_leds_cli "$led" -on -color ${colors.fail} -brightness ${toString brightness} || true
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fi
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echo "Disk $device woke up, restoring LED"
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fi
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fi
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}
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# Background power state checker
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check_power_states() {
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while true; do
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sleep ${toString powerCheckInterval}
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for led in "''${!devices[@]}"; do
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update_led "$led"
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done
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done
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}
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# Start power state checker in background
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check_power_states &
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POWER_CHECK_PID=$!
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trap "kill $POWER_CHECK_PID 2>/dev/null || true" EXIT
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# Main activity monitoring loop
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while true; do
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for led in "''${!devices[@]}"; do
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device="''${devices[$led]}"
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stat_file="/sys/block/$device/stat"
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if [ -f "$stat_file" ]; then
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new_stat=$(cat "$stat_file" 2>/dev/null || echo "")
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if [ -n "$new_stat" ] && [ "''${diskio_data[$led]}" != "$new_stat" ]; then
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# Activity detected - disk must be awake now
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if [[ "''${disk_standby[$led]}" == "1" ]]; then
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disk_standby["$led"]=0
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if [[ "''${disk_healthy[$led]}" == "1" ]]; then
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ugreen_leds_cli "$led" -on -color ${colors.healthy} -brightness ${toString brightness} || true
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else
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ugreen_leds_cli "$led" -on -color ${colors.fail} -brightness ${toString brightness} || true
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fi
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fi
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# Trigger LED blink for activity
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if [ -e "/sys/class/leds/$led/shot" ]; then
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echo 1 > "/sys/class/leds/$led/shot" 2>/dev/null || true
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else
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ugreen_leds_cli "$led" -blink 100 100 2>/dev/null || true
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sleep 0.05
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ugreen_leds_cli "$led" -on 2>/dev/null || true
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fi
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fi
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diskio_data["$led"]="$new_stat"
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fi
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done
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sleep ${refreshInterval}
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done
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'';
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# Network activity monitoring script
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netMonitorScript = pkgs.writeShellScript "ugreen-netdevmon" ''
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set -euo pipefail
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PATH="${lib.makeBinPath [ pkgs.ugreen-leds-cli pkgs.coreutils pkgs.iproute2 ]}:$PATH"
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INTERFACE="$1"
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CHECK_INTERVAL=60
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echo "Starting network monitoring on $INTERFACE"
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# Configure LED to trigger on network activity
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led_path="/sys/class/leds/netdev"
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while true; do
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# Check if interface is up
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if ip link show "$INTERFACE" 2>/dev/null | grep -q "state UP"; then
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# Link is up - set green
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ugreen_leds_cli netdev -on -color ${colors.network} -brightness ${toString brightness} || true
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# Try to enable hardware trigger for activity indication
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if [ -e "$led_path/device_name" ]; then
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echo "$INTERFACE" > "$led_path/device_name" 2>/dev/null || true
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fi
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if [ -e "$led_path/rx" ]; then
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echo 1 > "$led_path/rx" 2>/dev/null || true
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fi
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if [ -e "$led_path/tx" ]; then
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echo 1 > "$led_path/tx" 2>/dev/null || true
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fi
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else
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# Link is down - turn off
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ugreen_leds_cli netdev -off || true
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fi
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sleep $CHECK_INTERVAL
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done
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'';
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in
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{
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# Load i2c-dev kernel module for LED controller communication
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boot.kernelModules = [ "i2c-dev" ];
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# Install CLI tool
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environment.systemPackages = [ pkgs.ugreen-leds-cli ];
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# LED initialization service - runs once at boot
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systemd.services.ugreen-leds-init = {
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description = "Initialize UGREEN NAS LEDs";
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wantedBy = [ "multi-user.target" ];
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after = [ "local-fs.target" "systemd-modules-load.service" ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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ExecStart = "${initLedsScript}";
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};
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};
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# Disk activity monitoring service
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systemd.services.ugreen-diskiomon = {
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description = "UGREEN disk activity LED monitor";
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wantedBy = [ "multi-user.target" ];
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after = [ "ugreen-leds-init.service" "local-fs.target" ];
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requires = [ "ugreen-leds-init.service" ];
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serviceConfig = {
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Type = "simple";
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ExecStart = "${diskMonitorScript}";
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Restart = "always";
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RestartSec = "5s";
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};
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};
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# Network activity monitoring service (template for interface)
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systemd.services."ugreen-netdevmon@" = {
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description = "UGREEN network LED monitor for %i";
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after = [ "ugreen-leds-init.service" "network-online.target" ];
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requires = [ "ugreen-leds-init.service" ];
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serviceConfig = {
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Type = "simple";
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ExecStart = "${netMonitorScript} %i";
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Restart = "always";
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RestartSec = "10s";
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};
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};
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# Enable network monitoring for primary interface
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systemd.services."ugreen-netdevmon@enp2s0" = {
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wantedBy = [ "multi-user.target" ];
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};
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}
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