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Sun Cluster 2.2 Software Installation Guide

Configuring the Shared CCD Volume

You use the confccdssa(1M) command to create a disk group and volume to be used to store the CCD database. This is supported only on two-node clusters using VERITAS Volume Manager. This is not supported on clusters using Solstice DiskSuite.

Note -

The root disk group (rootdg) must be initialized before you run the confccdssa(1M) command.

How to Configure the Shared CCD Volume

  1. Make sure you have configured a volume for the CCD.

    Run the following command on both nodes. See the scconf(1M) man page for more details.


    # scconf clustername -S ccdvol

  2. Run the confccdssa(1M) command on only one node, and use it to select disks for the CCD.

    Select two disks from the shared disk expansion unit on which the shared CCD volume will be constructed: 


    # /opt/SUNWcluster/bin/confccdssa clustername
On a 2-node configured cluster you may select two disks that are 
shared between the 2 nodes to store the CCD database in case of a
 single node failure.

Please, select the disks you want to use from the following list:

Select devices from list.
Type the number corresponding to the desired selection.
For example: 1<CR>

1) SSA:00000078C9BF
2) SSA:00000080295E
3) DISK:c3t32d0s2:9725B71845
4) DISK:c3t33d0s2:9725B70870

Device 1: 3
Disk c3t32d0s2 with serial id 9725B71845 has been selected
as device 1.

Select devices from list.
Type the number corresponding to the desired selection.
For example: 1<CR>

1) SSA:00000078C9BF
2) SSA:00000080295E
3) DISK:c3t33d0s2:9725B70870
4) DISK:c3t34d0s2:9725B71240

Device 2: 4
Disk c3t34d0s2 with serial id 9725B71240 has been selected
as device 2.

newfs: construct a new file system /dev/vx/rdsk/sc_dg/ccdvol: 

(y/n)? y
...

The two disks selected can no longer be included in any other disk group. Once selected, the volume is created and a file system is laid out on the volume. See the confccdssa(1M) man page for more details.