== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 09:59:22 (1787839162)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       11292     1260012   1%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       16088     1255216   2%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       22744     3584192   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       20864     3586016   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43608     7170208   1%  /mnt/lustre