== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 17:38:54 (1788212334)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       19236     1252068   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       11876     1259428   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       29848     3577116   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       13756     3593208   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43604     7170324   1% /mnt/lustre