== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 14:54:24 (1790794464)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      2209792       10240     2197504   1% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      2210048       10368     2197632   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3771392       32768     3736576   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3771392       17408     3751936   1% /mnt/lustre[OST:1] 

filesystem_summary:      7542784       50176     7488512   1% /mnt/lustre