大盘鸡挂载数据盘教程：格式化并挂载到 /data

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#!/usr/bin/env bash
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set -Eeuo pipefail
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DEVICE="/dev/sdb1"
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MOUNT_POINT="/data"
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if [ "$(id -u)" -ne 0 ]; then
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    echo "错误：请使用 root 用户执行"
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    exit 1
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fi
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if [ ! -b "$DEVICE" ]; then
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    echo "错误：$DEVICE 不是有效的块设备"
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    exit 1
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fi
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echo "===== 当前磁盘信息 ====="
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lsblk -o NAME,SIZE,TYPE,FSTYPE,MOUNTPOINTS,MODEL
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echo
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read -r -p "即将清空 $DEVICE，输入设备名确认：" CONFIRM_DEVICE
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if [ "$CONFIRM_DEVICE" != "$DEVICE" ]; then
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    echo "已取消操作"
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    exit 1
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fi
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echo "===== 安装 XFS 工具 ====="
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apt update
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apt install -y xfsprogs
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echo "===== 卸载旧挂载 ====="
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if mountpoint -q "$MOUNT_POINT"; then
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    umount "$MOUNT_POINT"
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fi
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if findmnt -rn -S "$DEVICE" >/dev/null; then
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    umount "$DEVICE"
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fi
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echo "===== 格式化数据盘 ====="
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mkfs.xfs -f -K -L data "$DEVICE"
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echo "===== 创建挂载目录 ====="
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mkdir -p "$MOUNT_POINT"
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echo "===== 临时挂载数据盘 ====="
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mount "$DEVICE" "$MOUNT_POINT"
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chown root:root "$MOUNT_POINT"
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chmod 755 "$MOUNT_POINT"
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echo "===== 获取 UUID ====="
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UUID=$(blkid -s UUID -o value "$DEVICE")
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if [ -z "$UUID" ]; then
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    echo "错误：未能获取 $DEVICE 的 UUID"
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    exit 1
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fi
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echo "新 UUID：$UUID"
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echo "===== 备份 fstab ====="
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cp -a /etc/fstab "/etc/fstab.bak.$(date +%F-%H%M%S)"
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echo "===== 写入开机自动挂载配置 ====="
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sed -i '\|[[:space:]]/data[[:space:]]|d' /etc/fstab
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printf 'UUID=%s /data xfs defaults,nofail,relatime 0 0\n' "$UUID" >> /etc/fstab
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echo "===== 重新读取并测试配置 ====="
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systemctl daemon-reload
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umount "$MOUNT_POINT"
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mount "$MOUNT_POINT"
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echo
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echo "===== 挂载状态 ====="
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findmnt "$MOUNT_POINT"
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echo
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echo "===== 磁盘容量 ====="
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df -hT "$MOUNT_POINT"
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echo
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echo "===== 块设备信息 ====="
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lsblk -f
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echo
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echo "===== fstab 配置 ====="
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grep -nE '[[:space:]]/data[[:space:]]' /etc/fstab
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echo
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echo "数据盘已成功格式化并挂载到 $MOUNT_POINT"