== sanity test 56db: test 'lfs df -m' only shows MDT devices ========================================================== 14:00:55 (1772478055)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       17472     1253832   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       24420     1246884   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       21368     3585652   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       23376     3583644   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       44744     7169296   1%  /mnt/lustre