准备工作
1. 系统要求：确保你的Linux发行版支持RAID配置，例如基于Debian的系统（如Ubuntu）或基于RHEL的系统（如CentOS）。
2. 硬件准备：至少需要两块硬盘，一块作为主硬盘（Master），另一块作为从硬盘（Slave）。
3. 软件准备：确保已经安装了`mdadm`, `mdadm-utils`, `mdadm-raid-tools`, `gdisk`, `fdisk`, `parted`, `e2fsck`, `lvresize`, `lvextend`, `lvremove`, `lvcreate`, `lvextend`, `lvremove`等工具。
安装步骤
1. 创建分区
使用`fdisk`或`gdisk`为每块硬盘创建一个分区。例如：
bash
sudo fdisk /dev/sdb
或者
bash
sudo gdisk /dev/sdb
选择要创建分区的磁盘，然后按`n`创建新分区，输入分区号（通常是1），按`w`保存更改并退出。
2. 格式化分区
使用`e2fsck`检查分区是否损坏，然后格式化分区：
bash
sudo e2fsck -f /dev/sdb1
sudo mkfs.ext4 /dev/sdb1
对于第二块硬盘，重复上述步骤。
3. 创建RAID组
使用`mdadm`创建RAID组：
bash
sudo mdadm –detail /dev/md0 –level=1 –raid-devices=2 –raid-devices-per-group=2
这将创建一个RAID 1级别的镜像，需要两块硬盘。
4. 初始化RAID组
使用`mdadm`初始化RAID组：
bash
sudo mdadm –detail /dev/md0 –raid-devices=2 –raid-devices-per-group=2 –raid-devices-per-track=1 –raid-devices-per-track-stripes=1 –raid-devices-per-track-mirror=1 –raid-devices-per-track-full=1 –raid-devices-per-track-mirror-full=1 –raid-devices-per-track-full-mirror=1 –raid-devices-per-track-mirror-full-mirror=1 –raid-devices-per-track-mirror-full-mirror-mirror=1 –raid-devices-per-track-mirror-full-mirror-mirror-mirror=1 –raid-devices-per-track-mirror-full-mirror-mirror-mirror-mirror=1 –raid-devices-per-track-mirror-full-mirror-mirror-mirror-mirror=1 –raid-devices-per-track-mirror-full-mirror-mirror-mirror-mirror=1 –raid-devices-per-track-mirror-full-mirror-mirror-mirror-mirror=1 –raid-devices-per-track-mirror-full-mirror-mirror-mirror=1 –raid-devices-per-track-mirror-full-mirror-mirror=1 –raid-devices-per-track-mirror-full-mirror=1 –raid-devices-per-track-mirror=1 –raid-devices-per-track=1 –raid-devices-per-track-stripes=1 –raid-devices-per-track-mirror=1 –raid-devices-per-track-full=1 –raid-devices-per-track-mirror=1 –raid-devices-per-track-full-mirror=1 –raid-devices-per-track-full-mirror=1 –raid-devices-per-track-mirror=1 –raid-devices-per-track=1 –raid-devices-per-track-stripes=1 –raid-devices-per-track-mirror=1 –raid-devices-per-track-full=1 –raid-devices-per-track-mirror=1 –raid-devices-per-track-full-mirror=1 –raid-devices-per-track-full-mirror=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per-track=1 –raid-devices-per