== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 17:56:48 (1746136608)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       19880     1267808   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       18248     1269440   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       28844     3578176   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       14308     3592712   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       43152     7170888   1% /mnt/lustre