== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 20:48:01 (1788569281)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      2210048        8320     2199680   1% /mnt/lustre[MDT:0] 
lustre-OST0000_UUID      3771392       23552     3738624   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3771392       26624     3733504   1% /mnt/lustre[OST:1] 

filesystem_summary:      7542784       50176     7472128   1% /mnt/lustre