== sanity test 56db: test 'lfs df -m' only shows MDT devices ========================================================== 15:17:53 (1767039473)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       17752     1253552   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       25048     1246256   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       27848     3579116   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       17752     3589268   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       45600     7168384   1%  /mnt/lustre