The pool_tool command can be used to change the name of a pool.
pool_tool -r NewPoolName CurrentPoolName
Specifies the new name of the pool.
Specifies the pool name to be changed.
In releases before GFS 5.2, the -r flag had a different usage.
You must deactivate a pool before renaming it. You can deactivate a pool with the pool_assemble -r PoolName command or by using the pool init.d script. For more information about GFS init.d scripts, refer to Chapter 12 Using GFS init.d Scripts.