The 'mgs_config_body' structure has information identifying to the MGS
which Lustre file system the client is requesting configuration information
-from. 'mcb_name' contains the filesystem name (fsname). 'mcb_offset'
+from. 'mcb_name' contains the file system name (fsname). 'mcb_offset'
contains the next record number in the configuration llog to process
(see <<llog>> for details), not the byte offset or bulk transfer units.
'mcb_bits' is the log2 of the units of minimum bulk transfer size,