== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 08:48:15 (1743511695)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       12520     1275168   1% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       20016     1267672   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116      542944     3064020  16% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116      532076     3074916  15% /mnt/lustre[OST:1]

filesystem_summary:      7666232     1075020     6138936  15% /mnt/lustre