mdadm软RAID

fdisk 分区时把成员盘ID改成fd

RAID:
1.mknod /dev/md1 b 9 1        # use it once by now

echo md1 >> /etc/udev/makedev.d/50-udev.nodes     # add device file

2.mdadm -Cv /dev/md1 -l5 -n3 -x1 /dev/sda{6,7,8,9}    # create RAID

mdadm /dev/md1 -f /dev/sda7 #test remove /dev/sda7    # 强删成员盘 测试

mdadm -D /dev/md1 cat /proc/mdstat      # 查看RAID状态

mdadm -R mdadm -S            # run and stop command

mdadm -Ds > /etc/mdadm.conf         # configuration

 

# make FS and auto mount at boot time

mkfs.ext3 /dev/md1

mkdir -p /media/md1

cat >> /etc/fstab <!
/dev/md1  /media/md1 ext3 defaults  0 0
!

mount -a

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mdadm /dev/md0 -f /dev/sda9     # 模拟磁盘出错

mdadm /dev/md0 -r /dev/sda9     # 把出错的盘移除

mdadm /dev/md0 -a /dev/sda12     # 添加新的可用的盘

mdadm -D /dev/md0       # 可以看到正在修复

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