== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 01:13:08 (1739513588)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       13584     1274104   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       20976     1266712   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116      537696     3069324  15% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116      536844     3070176  15% /mnt/lustre[OST:1]

filesystem_summary:      7666232     1074540     6139500  15% /mnt/lustre