== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 17:56:47 (1784239007)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210176        8192     2199936   1%  /mnt/lustre[MDT:0] 
lustre-OST0000_UUID      3771392       21504     3740672   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3771392       26624     3738624   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7542784       48128     7479296   1%  /mnt/lustre