== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 23:51:57 (1718855517)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       15268     1272420   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       22068     1265620   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       31372     3575648   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       19188     3587832   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       50560     7163480   1% /mnt/lustre