== sanity test 56db: test 'lfs df -m' only shows MDT devices ========================================================== 02:12:24 (1746166344)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       19244     1268444   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       17916     1269772   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       23440     3583580   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       19720     3587300   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       43160     7170880   1% /mnt/lustre