== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 13:52:18 (1789062738)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       15472     1255832   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       10248     1261056   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       26136     3580856   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       17468     3589524   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43604     7170380   1% /mnt/lustre