== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 13:58:48 (1790791128)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       17028     1254276   2% /mnt/lustre[MDT:0] 
lustre-OST0000_UUID      3833116       20392     3586544   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       22648     3583896   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43040     7170440   1% /mnt/lustre