57 lines
1.6 KiB
Bash
Executable File
57 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# 定義幫助訊息函數
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usage() {
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echo "用法: sudo $0 <掛載路徑> <日誌檔案路徑>"
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echo "範例: sudo $0 /nas/Backup /var/log/nas_check.log"
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exit 1
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}
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# 檢查參數數量，如果少於 2 個則顯示 help
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if [ "$#" -ne 2 ]; then
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usage
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fi
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MOUNT_PATH=$1
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LOG_FILE=$2
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# 確保 log 檔案的目錄存在
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LOG_DIR=$(dirname "$LOG_FILE")
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if [ ! -d "$LOG_DIR" ]; then
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mkdir -p "$LOG_DIR"
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fi
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# 取得目前時間
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TIMESTAMP=$(date "+%Y-%m-%d %H:%M:%S")
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# --- 核心檢查邏輯 ---
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# 1. 檢查目錄是否為掛載點
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# 2. 檢查目錄是否可正常存取 (ls)，避免 Stale File Handle 或連線僵死
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if mountpoint -q "$MOUNT_PATH" && ls "$MOUNT_PATH" > /dev/null 2>&1; then
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# 狀態正常
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echo "[$TIMESTAMP] 狀態正常。" > "$LOG_FILE"
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exit 0
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else
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# 狀態異常，開始修復
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echo "[$TIMESTAMP] 偵測到 $MOUNT_PATH 掛載異常，準備修復..." >> "$LOG_FILE"
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# 嘗試強制卸載 (Lazy unmount)
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# 使用 -l 可以即刻解除目錄占用，解決 "Device or resource busy"
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umount -l "$MOUNT_PATH" > /dev/null 2>&1
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# 重新掛載 (讀取 /etc/fstab 設定)
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mount "$MOUNT_PATH" >> "$LOG_FILE" 2>&1
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# 最終驗證
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if mountpoint -q "$MOUNT_PATH" && ls "$MOUNT_PATH" > /dev/null 2>&1; then
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echo "[$TIMESTAMP] $MOUNT_PATH 修復成功。" >> "$LOG_FILE"
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# 這裡可以加入重啟 Docker 的通用邏輯 (選用)
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# systemctl restart docker
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else
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echo "[$TIMESTAMP] 錯誤: 無法掛載 $MOUNT_PATH，請檢查網路或 NAS 狀態。" >> "$LOG_FILE"
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fi
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fi
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