== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 11:28:03 (1790954883)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      2210048        7552     2200448   1% /mnt/lustre[MDT:0] 
lustre-OST0000_UUID      3771392       21504     3740672   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3771392       26624     3733504   1% /mnt/lustre[OST:1] 

filesystem_summary:      7542784       48128     7474176   1% /mnt/lustre