== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 11:47:30 (1781624850)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       17820     1253484   2%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       10344     1260960   1%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       28848     3578172   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       14684     3592336   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43532     7170508   1%  /mnt/lustre