Error with software RAID CentOS 5.5

[Wave]

I have installed CentOS 5.5 on the computer of mine. Well I am having 2 hard disk on software Raid 1. When I have look on the RAID status on the computer of mine and it is prompting following details on the screen.

# cat /proc/mdstat
Personalities : [raid1] [raid10] [raid0] [raid6] [raid5] [raid4]
md0 : active raid1 sdb1[1] sda1[0]
4198976 blocks [2/2] [UU]

md1 : active raid1 sdb2[1] sda2[0]
2104448 blocks [2/2] [UU]

md2 : active raid1 sdb3[1]
726266432 blocks [2/1] [_U]

unused devices: <none>

Let me know whether you are aware of the thing which I have mentioned over. I am waiting for the prompt replies of yours. thanks a lot in advance.

[teena_pansare]

I am suggesting that you should use the below mentioned command on the computer of yours. you have to see that /dev/sda3 is running or not.

fdisk -l /dev/sda3

Let me know the results of the above mentioned command over here. Make sure that you have copy and paste the above mentioned command on the terminal.

[Ekpah]

If the above mentioned command is working then I am sure that the you should run the below mentioned command on the terminal.

mdadm /dev/md2 -f /dev/sda3 -r /dev/sda3 -a /dev/sda3

if your computer does not reboot then you should execute the below mentioned command on the terminal.

echo "check" > /sys/block/md2/md/sync_action

[windows_user]

Well looking at the matter of yours I am suggesting that you should execute the below mentioned command on the terminal. Before executing this particular command you should run the mdmonitor and set up MAILADDR on your /etc/mdadm.conf.

chkconfig mdmonitor on && service mdmonitor start

I am hoping that the command which I have mentioned over here.

[Dolsy_bendal]

I think in the situation of yours I am suggesting that the partition is still on the hard disk but I am suspecting that the partition flag is not available. Well if that is the situation and then you should use the following command on the terminal and see whether it is working or not.

fdisk /dev/sda

on the fdisk

t
3
fd
w

it would set the type (t) of the partition 3 on the Linux raid autodetect and save the changes which has been done by you.

[Zhankana_n]

Well I was having the same problem which you have mentioned over here. Even I have tried with the solution which are provided in this particular thread. However it did not helped me to solve the problem of mine. after doing lots of research work I have finally managed to fix the problem of mine. I have executed the below mentioned command on the terminal and I have solved the issue of mine.

mdadm /dev/md2 -a /dev/sda3

I am hoping that it will help you out.