== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 21:31:12 (1746149472)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       19868     1267820   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       18176     1269512   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       25776     3581244   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       17392     3589628   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       43168     7170872   1% /mnt/lustre