== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 13:50:20 (1731351020)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       20660     1267028   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       18364     1269324   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116      549480     3057540  16% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116      526084     3080936  15% /mnt/lustre[OST:1]

filesystem_summary:      7666232     1075564     6138476  15% /mnt/lustre