关于mdadm的一些常见操作

更详细的请参考：参考: https://www.cnblogs.com/lpfuture/p/6385657.html?utm_source=itdadao&utm_medium=referral

查看raid信息

mdadm -D /dev/md0
cat /proc/mdstat

创建软raid

mdadm --create /dev/md0 --level=raid0 --raid-devices=12 /dev/sd[b-m]

停止raid

mdadm -S /dev/md0

停止后启动raid

mdadm -A /dev/md0 /dev/sd[b-m]

添加一块磁盘

mdadm --add /dev/md0 /dev/sdb

移除一块盘

mdadm -r /dev/md0 /dev/sdb

################ 一个制作软raid的脚本 ################

!/bin/bash

function mdadm_init ()
{
umount /dev/md0
mdadm -S /dev/md0
mdadm --zero-superblock /dev/sd[b-m]
}

function block_init ()
{
for i in {b..m};
do
echo "
d
n

t
ee
w
" |fdisk /dev/sd\(i && mkfs.xfs -f /dev/sd\){i}
done
}

function raid ()
{
mdadm --create /dev/md0 --level=raid0 --raid-devices=12 /dev/sd[b-m]
mkfs.xfs -f /dev/md0
echo '' > /etc/mdadm.conf
echo Device /dev/sd[b-m] >> /etc/mdadm.conf
mdadm -Ds >> /etc/mdadm.conf
echo MAILADD root@locahost >> /etc/mdadm.conf
sed -i '/Data2/d' /etc/fstab
echo '/dev/md0 /Data2 xfs defaults 0 0' >> /etc/fstab
mount -a
}

mdadm_init
block_init
raid