C.5.1 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.