== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 17:39:05 (1789076345)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       17564     1253740   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116        9904     1261400   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       24060     3582960   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       19544     3587448   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43604     7170408   1% /mnt/lustre