DXP4800-黑群晖小记

绿联nas 关闭watchdog 及修改启动方式教程

[https://post.smzdm.com/p/a3xnev8n/](https://post.smzdm.com/p/a3xnev8n/)

绿联黑群晖

[https://post.smzdm.com/p/a07nw4zr/](https://post.smzdm.com/p/a07nw4zr/)

黑群晖安装教程

[https://post.smzdm.com/p/akk9vpkr/](https://post.smzdm.com/p/akk9vpkr/)

2024 年就 10 月黑群晖 nas 教程

[https://www.bilibili.com/video/BV1XN2QYWEAi/?spm_id_from=333.337.search-card.all.click&vd_source=c50111db380d4669d222dbf4f28aa85a](https://www.bilibili.com/video/BV1XN2QYWEAi/?spm_id_from=333.337.search-card.all.click&vd_source=c50111db380d4669d222dbf4f28aa85a)

https://www.langog.com/?p=0f263caf-d8a0-4627-b458-7f1df146b88a

https://github.com/miskcoo/ugreen_leds_controller

#!/bin/bash

FAN_CONTROL="/sys/devices/platform/it87.2608/hwmon/hwmon2/pwm3"

# 检查必要的命令是否存在
command -v sensors >/dev/null 2>&1 || { echo "需要安装 lm-sensors，请先运行: apt-get install lm-sensors"; exit 1; }
command -v bc >/dev/null 2>&1 || { echo "需要安装 bc，请先运行: apt-get install bc"; exit 1; }

# 检查文件权限和路径
if [ ! -w "$FAN_CONTROL" ]; then
    echo "错误: 无法写入风扇控制文件 $FAN_CONTROL"
    echo "请确保以root权限运行此脚本"
    exit 1
fi

# 检查风扇控制模式设置是否成功
if ! echo 1 > /sys/devices/platform/it87.2608/hwmon/hwmon2/pwm3_enable; then
    echo "错误: 无法设置风扇控制模式"
    exit 1
fi

# 初始化变量
declare -a temp_history=()
current_pwm=85
NORMAL_INTERVAL=15
HIGH_TEMP_INTERVAL=5
TEMP_THRESHOLD=45
MIN_PWM=55
MAX_PWM=255
LOG_FILE="/var/log/fan_control.log"

# 创建日志文件（如果不存在）
touch "$LOG_FILE" 2>/dev/null || { echo "错误: 无法创建日志文件"; exit 1; }

# 温度读取函数
get_temp() {
    local temp
    temp=$(sensors | grep "Package id 0:" | awk '{print $4}' | tr -d '+°C')
    
    # 检查温度读取是否成功
    if [[ ! $temp =~ ^[0-9]+(\.[0-9]+)?$ ]]; then
        echo "错误: 无法正确读取温度" >> "$LOG_FILE"
        return 1
    fi
    
    # 检查温度是否在合理范围内 (-20到100度)
    if (( $(echo "$temp < -20 || $temp > 100" | bc -l) )); then
        echo "警告: 温度读数异常: ${temp}°C" >> "$LOG_FILE"
        return 1
    fi
    
    echo "$temp"
    return 0
}

# 设置风扇转速函数
set_fan_speed() {
    local pwm=$1
    
    # 确保PWM值在有效范围内
    if [ $pwm -lt $MIN_PWM ]; then
        pwm=$MIN_PWM
    elif [ $pwm -gt $MAX_PWM ]; then
        pwm=$MAX_PWM
    fi
    
    # 尝试设置风扇转速
    if ! echo $pwm > "$FAN_CONTROL"; then
        echo "错误: 设置风扇转速失败: $pwm" >> "$LOG_FILE"
        return 1
    fi
    
    return 0
}

# 主循环
while true; do
    # 获取CPU温度
    TEMP=$(get_temp)
    if [ $? -ne 0 ]; then
        # 温度读取失败，使用保守的风扇设置
        echo "警告: 温度读取失败，使用默认风扇设置" >> "$LOG_FILE"
        set_fan_speed 150
        sleep $NORMAL_INTERVAL
        continue
    fi
    
    # 根据温度设置检测间隔
    if (( $(echo "$TEMP >= $TEMP_THRESHOLD" | bc -l) )); then
        sleep_interval=$HIGH_TEMP_INTERVAL
    else
        sleep_interval=$NORMAL_INTERVAL
    fi
    
    # 设置目标风扇转速
    if (( $(echo "$TEMP < 30" | bc -l) )); then
        target_pwm=$MIN_PWM
    elif (( $(echo "$TEMP >= 30 && $TEMP < 35" | bc -l) )); then
        target_pwm=85
    elif (( $(echo "$TEMP >= 35 && $TEMP < 40" | bc -l) )); then
        target_pwm=120
    elif (( $(echo "$TEMP >= 40 && $TEMP < 45" | bc -l) )); then
        target_pwm=150
    elif (( $(echo "$TEMP >= 45 && $TEMP < 50" | bc -l) )); then
        target_pwm=180
    elif (( $(echo "$TEMP >= 50 && $TEMP < 55" | bc -l) )); then
        target_pwm=200
    elif (( $(echo "$TEMP >= 55 && $TEMP < 60" | bc -l) )); then
        target_pwm=225
    else
        target_pwm=$MAX_PWM
    fi
    
    # 平滑过渡
    if [ $target_pwm -gt $current_pwm ]; then
        current_pwm=$(( current_pwm + 8 ))
    elif [ $target_pwm -lt $current_pwm ]; then
        current_pwm=$(( current_pwm - 3 ))
    fi
    
    # 确保PWM值在有效范围内并设置风扇转速
    if ! set_fan_speed $current_pwm; then
        echo "错误: 风扇控制失败，等待下次尝试" >> "$LOG_FILE"
        sleep $NORMAL_INTERVAL
        continue
    fi
    
    # 记录日志，同时检查日志文件大小
    log_size=$(stat -f %z "$LOG_FILE" 2>/dev/null || echo 0)
    if [ $log_size -gt 10485760 ]; then  # 10MB
        mv "$LOG_FILE" "${LOG_FILE}.old"
        touch "$LOG_FILE"
    fi
    
    echo "$(date '+%Y-%m-%d %H:%M:%S') - Temp: ${TEMP}°C, PWM: ${current_pwm}, Interval: ${sleep_interval}s" >> "$LOG_FILE"
    
    # 使用trap捕获信号
    trap 'echo "收到终止信号，设置风扇为默认值并退出..."; set_fan_speed 150; exit 0' SIGTERM SIGINT
    
    sleep $sleep_interval
done