== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 12:27:39 (1788539259)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       11428     1259876   1% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       16300     1255004   2% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       20720     3586300   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       22952     3584068   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43672     7170368   1% /mnt/lustre