== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 03:13:28 (1747811608)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      2210432       23808     2184576   2% /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       22528     3746816   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       26624     3742720   1% /mnt/lustre[OST:1]

filesystem_summary:      7542784       49152     7489536   1% /mnt/lustre