Configuring your Environment for Software RAID
Creating a Multiple Disk Device
2.Assemble the MD device on the other node by running the following command:
#mdadm -A -R /dev/md0 /dev/hpdev/sde1 /dev/hpdev/sdf1
3.Stop the MD device on the other node by running the following command:
#mdadm
You must stop the MD device soon after you assemble it on the second node.
4. If you want to create volume groups, restart the MD device on the
| first node by running the following command: |
| # mdadm |
| 5. After you have created the volume groups, stop the MD device by |
| running the following command: |
| # mdadm |
|
|
IMPORTANT | You would need to repeat this procedure to create all MD devices that are |
| used in a package. |
| When data is written to this device, the MD driver writes to both the |
| |
| underlying disks. In case of read requests, the MD reads from one device |
| or the other based on its algorithms. After creating this device you treat |
| it like any other LUN that is going to have shared data in a Serviceguard |
| environment and then create a logical volume and a file system on it. |
Chapter 3 | 73 |
