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Update Time : Tue Feb 28 22:17:55 2006
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 33 1 active sync /dev/sdc1
2 8 49 2 active sync /dev/sdd1
UUID : 70fc89c1:ef191858:784578eb:81603b8d
Events : 0.48
一切正常!
<3>如果其中某个硬盘坏了会怎么样呢?系统会自动停止这块硬盘的工作,然后让后备的那块硬盘顶上去工作.我们可以进行如下操作：
拥有帝国一切，皆有可能。欢迎访问phome.net
[root@localhost mdadm]# mdadm /dev/md0 --fail /dev/sdc1
mdadm: set /dev/sdc1 faulty in /dev/md0
[root@localhost mdadm]# cat /proc/mdstat
Personalities : [raid5]
md0 : active raid5 sdc1[3](F) sdd1[2] sdb1[1] sda1[0] # F标签以为此盘为fail.
2088192 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
unused devices: <none>
<4>如果我要移除一块坏的硬盘或添加一块硬盘呢?
[root@localhost mdadm]# mdadm /dev/md0 --remove /dev/sdc1
mdadm: hot removed /dev/sdc1
[root@localhost mdadm]# cat /proc/mdstat
Personalities : [raid5]
md0 : active raid5 sdd1[2] sdb1[1] sda1[0]
2088192 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
unused devices: <none>
<5>增加一块硬盘
[root@localhost mdadm]# mdadm /dev/md0 --add /dev/sdc1
mdadm: hot added /dev/sdc1
[root@localhost mdadm]# cat /proc/mdstat
Personalities : [raid5]
md0 : active raid5 sdc1[3] sdd1[2] sdb1[1] sda1[0]
2088192 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
unused devices: <none>
拥有帝国一切，皆有可能。欢迎访问phome.net |
