== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 23:10:53 (1788664253)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       17480     1253824   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       10036     1261268   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       24712     3582252   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       18896     3588040   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43608     7170292   1% /mnt/lustre