== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 11:05:58 (1790953558)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      2210176        7936     2200192   1% /mnt/lustre[MDT:0] 
lustre-OST0000_UUID      3771392       24576     3739648   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3771392       25600     3734528   1% /mnt/lustre[OST:1] 

filesystem_summary:      7542784       50176     7474176   1% /mnt/lustre