Guidelines for the /globaldevices File System

Sun Cluster software requires you to set aside a dedicated file system on one of the local disks for use in managing global devices. This file system is usually located on your root disk. However, if you use different storage on which to locate the global-devices file system, such as a Logical Volume Manager volume, it must not be part of a Solaris Volume Manager shared disk set or part of a VxVM disk group other than a root disk group. This file system is later mounted as a UFS cluster file system. Name this file system /globaldevices, which is the default name that is recognized by the scinstall(1M) command.

No file-system type other than UFS is valid for the global-devices file system. Do not attempt to change the file-system type after the global-devices file system is created.

The scinstall command later renames the file system /global/.devices/node@nodeid, where nodeid represents the number that is assigned to a Solaris host when it becomes a global-cluster member. The original /globaldevices mount point is removed.

The /globaldevices file system must have ample space and ample inode capacity for creating both block special devices and character special devices. This guideline is especially important if a large number of disks are in the cluster. A file system size of 512 Mbytes should suffice for most cluster configurations.