== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 21:54:25 (1788573265)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       19320     1251984   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       11968     1259336   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       22908     3583916   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       20700     3586180   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43608     7170096   1% /mnt/lustre