== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 05:54:25 (1787392465)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       17780     1253524   2%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       10196     1261108   1%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       29076     3577776   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       14504     3592208   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43580     7169984   1%  /mnt/lustre