== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 11:11:26 (1790953886)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       19428     1251876   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       11900     1259404   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       31908     3574748   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       11680     3595256   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43588     7170004   1% /mnt/lustre