== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 18:58:01 (1788476281)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       17676     1253628   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       10320     1260984   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       30948     3575792   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       12648     3594260   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43596     7170052   1% /mnt/lustre