== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 15:40:40 (1752522040)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       17340     1270348   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       16084     1271604   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       32268     3574444   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       11284     3595596   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       43552     7170040   1% /mnt/lustre