To enable I/O fencing on Solaris, the UNIX user starting the
Cluster Edition must be granted SYS_DEVICES inheritable
privileges to enable access to the raw devices (/dev/raw/raw# or /dev/rdsk/c#t#d#s#)
used by the Cluster Edition for database and quorum devices. SYS_DEVICES
allows the Cluster Edition to execute the SCSI-3 PGR commands used
for I/O fencing.
Temporary SYS_DEVICES privileges can be granted to
the user’s set of inheritable privileges. For example:
sudo ppriv -s I+sys_devices $$
Permanent SYS_DEVICES privileges can be granted to
the current user’s shell process. For example:
usermod -K defaultpriv=basic,sys_devices mylogin
Note: Solaris AMD 64-bit doesn't support I/O fencing on Solaris VMs.
See your operating system documentation for complete syntax
and usage information.