== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 19:17:52 (1780528672)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       21444     1249860   2%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       15856     1255448   2%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       27852     3579084   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       17848     3589144   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       45700     7168228   1%  /mnt/lustre