== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 19:58:07 (1784764687)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210048        8192     2199808   1%  /mnt/lustre[MDT:0] 
lustre-OST0000_UUID      3771392       21504     3747840   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3771392       26624     3722240   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7542784       48128     7470080   1%  /mnt/lustre