== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 22:24:09 (1788747849)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       17548     1253756   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       10148     1261156   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       20932     3586088   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       22676     3584316   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43608     7170404   1% /mnt/lustre