fs_status()

Attribute 

Determines availability of threshold controls (for example, a read-only mounted file system has no threshold control) 

fs_max_size()

Attribute 

Size of the file system in blocks 

fs_bsize()

Attribute 

Size in bytes of the block 

fs_space_free()

Gauge (low threshold) 

Number of blocks currently available in the file system 

fs_max_files()

Attribute 

Maximum number of files that can be created on the file system 

fs_nb_files()

Gauge 

Current number of files created on the file system