linux as2.1 软raid5坏盘更换笔记

June 22nd, 2007

作者: Jeffrey
出处:http://blog.zhangjianfeng.com/?p=583

硬件:hp 9000小型机
软件:redhat as2.1
1.查看raid信息
cat /etc/raidtab,如果有信息就可以用命令 lsraid -a
/dev/md0 查看详细内容,包括各盘的状态等
但运行lsraid -a /dev/md3,显示其中一块盘状态为failed
[dev   8, 49] /dev/sdd1        AED294EF.331491E9.8D3C2C28.9C9E47A8 failed
2.关机，取出坏盘，更换新盘
3.开机，对新盘进行重新分区
4.运行raidhotadd /dev/md3 /dev/sdd1
5. 运行 cat /proc/mdstat看恢复的进度
Personalities : [raid1] [raid5]
read_ahead 1024 sectors
md3 : active raid5 sdd1[5] sdg1[4] sdf1[3] sde1[2] sdc1[0]
      142261760 blocks level 5, 64k chunk, algorithm 0 [5/4] [U_UUU]
      [==>………………] recovery = 11.9% (4260096/35565440) finish=52.3min speed=9956K/sec
md5 : active raid1 sdb1[1] sda1[0]
      307136 blocks [2/2] [UU]

md0 : active raid1 sdb2[1] sda2[0]
      20479936 blocks [2/2] [UU]

md4 : active raid1 sdb3[1] sda3[0]
      9609152 blocks [2/2] [UU]

md2 : active raid1 sdb4[1] sda4[0]
      3071936 blocks [2/2] [UU]

md1 : active raid1 sdb5[1] sda5[0]
      2097088 blocks [2/2] [UU]