== sanity test 56db: test 'lfs df -m' only shows MDT devices ========================================================== 06:33:30 (1744022010)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      2210432       19200     2189184   1% /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       22528     3746816   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       26624     3742720   1% /mnt/lustre[OST:1]

filesystem_summary:      7542784       49152     7489536   1% /mnt/lustre