== sanity test 56db: test 'lfs df -m' only shows MDT devices ========================================================== 08:36:58 (1749127018)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       23704     1263984   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       21160     1266528   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       32924     3574096   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       12100     3594920   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       45024     7169016   1% /mnt/lustre