On Linux RH 6.x which utilizes autofs for a mountpoint, the cdm probe returns 0 values for the total space and free space for these autofs filesystem type filesystems.
The cdm.log file will show messages similar to the following at loglevel 5 in the cdm.log file:
Mar 4 09:08:13:855 [139933951612672] cdm: Found FS /my/autofs on device /etc/auto.direct type autofs
Mar 4 09:08:13:855 [139933951612672] cdm: Adding FS to list
Mar 4 09:08:13:855 [139933951612672] cdm: Found FS /my/autofs on device remotedevice:/remote/nfs type nfs4
Mar 4 09:08:13:855 [139933951612672] cdm: Adding FS to list
Mar 4 09:08:13:855 [139933951612672] cdm: Skipping Network fs /my/autofs - nfs space checking not active
Release : 8.5 or higer
Component : UIM - CDM WITH IOSTAT any version through 6.42