Saving Device Configuration Information

Record the /etc/path_to_inst and the /etc/name_to_major information on removable media (floppy disk or backup tape).

The path_to_inst(4) file contains the minor unit numbers for disks in each multihost disk expansion unit. This information will be necessary if the boot disk on any Sun Cluster node fails and has to be replaced.

• Solstice DiskSuite - For configurations that do not use the Disk ID (DID) driver, the /etc/name_to_major file contains the major device numbers for multihost disks. For example, Solstice DiskSuite relies upon the major numbers remaining the same across Solaris operating system installs. This applies only to clusters that upgraded from HA 1.3 to Sun Cluster 2.2. Refer to the Solstice DiskSuite appendix in the Sun Cluster 2.2 Software Installation Guide for more information.

• VxVM - To avoid "Stale File handle" errors at the client on NFS failovers, make sure that the vxio driver has identical pseudo-device major numbers on all cluster nodes. This number can be found in the /etc/name_to_major file after you complete the installation. Refer to the chapters on Sun Cluster HA for NFS and on configuring VxVM in the Sun Cluster 2.2 Software Installation Guide for more information.