132 lines
3.8 KiB
Bash
132 lines
3.8 KiB
Bash
#!/bin/bash
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set -euo pipefail
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#----------------------------------------------------------
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# 用户配置部分
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#----------------------------------------------------------
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DISKS=("/dev/vdb" "/dev/vdc" "/dev/vdd" "/dev/vde") # 4块物理磁盘
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MOUNT_PATH="/var/lib/docker" # 挂载点路径（目录会自动创建）
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FS_TYPE="ext4" # 文件系统类型（支持 ext4/xfs，默认 ext4）
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VG_NAME="datavg" # 卷组名
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LV_NAME="lvdata" # 逻辑卷名
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#----------------------------------------------------------
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# 核心逻辑（建议非必要不修改）
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#----------------------------------------------------------
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function check_prerequisites() {
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# 必须 root 权限运行检查
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[[ $EUID -ne 0 ]] && echo -e "\033[31m错误：必须使用 root 权限运行此脚本\033[0m" && exit 1
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# 文件系统类型校验
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if [[ "$FS_TYPE" != "ext4" && "$FS_TYPE" != "xfs" ]]; then
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echo -e "\033[31m错误：不支持的磁盘格式 $FS_TYPE，仅支持 ext4/xfs\033[0m"
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exit 1
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fi
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# 磁盘存在性检查
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for disk in "${DISKS[@]}"; do
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[[ ! -b "$disk" ]] && echo -e "\033[31m错误：磁盘 $disk 不存在\033[0m" && exit 1
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done
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# 检查 VG / LV 是否已存在，避免误操作
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if vgdisplay "$VG_NAME" >/dev/null 2>&1; then
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echo -e "\033[31m错误：卷组 $VG_NAME 已存在，请先检查环境\033[0m"
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exit 1
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fi
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if lvdisplay "/dev/${VG_NAME}/${LV_NAME}" >/dev/null 2>&1; then
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echo -e "\033[31m错误：逻辑卷 /dev/${VG_NAME}/${LV_NAME} 已存在，请先检查环境\033[0m"
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exit 1
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fi
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}
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function prepare_disks() {
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PARTITIONS=()
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echo -e "\033[34m正在初始化磁盘分区...\033[0m"
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for disk in "${DISKS[@]}"; do
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echo -e "\033[34m处理磁盘: $disk\033[0m"
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parted "$disk" --script mklabel gpt
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parted "$disk" --script mkpart primary 0% 100%
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parted "$disk" --script set 1 lvm on
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partprobe "$disk"
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# 兼容 nvme 和普通 sd/vd 设备命名
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if [[ "$disk" =~ nvme ]]; then
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partition="${disk}p1"
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else
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partition="${disk}1"
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fi
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# 等待分区节点出现
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udevadm settle
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sleep 1
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[[ ! -b "$partition" ]] && echo -e "\033[31m错误：分区 $partition 未识别成功\033[0m" && exit 1
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PARTITIONS+=("$partition")
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done
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}
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function create_lvm() {
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echo -e "\033[34m正在创建 LVM 结构...\033[0m"
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pvcreate "${PARTITIONS[@]}"
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vgcreate "$VG_NAME" "${PARTITIONS[@]}"
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lvcreate -y -l 100%FREE -n "$LV_NAME" "$VG_NAME"
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}
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function format_and_mount() {
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local lv_path="/dev/${VG_NAME}/${LV_NAME}"
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echo -e "\033[34m格式化逻辑卷...\033[0m"
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if [[ "$FS_TYPE" == "ext4" ]]; then
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mkfs.ext4 -F "$lv_path"
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else
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mkfs.xfs -f "$lv_path"
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fi
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echo -e "\033[34m设置挂载配置...\033[0m"
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mkdir -p "$MOUNT_PATH"
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UUID=$(blkid -s UUID -o value "$lv_path")
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[[ -z "$UUID" ]] && echo -e "\033[31m错误：未获取到逻辑卷 UUID\033[0m" && exit 1
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# 避免重复写入 fstab
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if ! grep -q "$UUID" /etc/fstab; then
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echo "UUID=$UUID $MOUNT_PATH $FS_TYPE defaults 0 0" >> /etc/fstab
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else
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echo -e "\033[33m提示：/etc/fstab 中已存在该 UUID，跳过写入\033[0m"
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fi
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mount -a
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}
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function verify_result() {
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echo -e "\n\033[1;36m最终验证结果：\033[0m"
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echo -e "\n\033[1;36m1. 查看块设备和 LVM 结构：\033[0m"
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lsblk -f
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echo -e "\n\033[1;36m2. 查看挂载结果：\033[0m"
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df -hT "$MOUNT_PATH"
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echo -e "\n\033[1;36m3. 查看 VG/LV 信息：\033[0m"
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vgs
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lvs
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pvs
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}
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#----------------------------------------------------------
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# 主执行流程
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#----------------------------------------------------------
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check_prerequisites
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prepare_disks
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create_lvm
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format_and_mount
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verify_result
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echo -e "\n\033[32m操作执行完毕，请仔细核查上述输出信息\033[0m" |