== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 12:40:47 (1740678047)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       16892     1270796   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       23496     1264192   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116      539412     3067608  15% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116      536144     3070876  15% /mnt/lustre[OST:1]

filesystem_summary:      7666232     1075556     6138484  15% /mnt/lustre