== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 08:43:03 (1756816983)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       22824     1264864   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       20212     1267476   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       26792     3580228   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       18640     3588380   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       45432     7168608   1% /mnt/lustre