No Volume data is gathered by the DiskIO agent for some of the filesystems mounted an HP UX 11.31 host. The filesystems are local to the host and managed by the HP Logical Volume Manager (LVM). Data is gathered for filesystems mounted on another drive which is also local and managed by HP LVM.
The DiskIO agent did not have the permissions required to gather data from some of the filesystems. The FglAM (Foglight Agent Manager) was running as a non-root user.
There are two possible resolutions to this problem:
Add the user that the FglAM runs as to the "sys" group.
Allow the DiskIO agent to run with root permissions