== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 05:04:52 (1753434292)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       16928     1270760   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       23804     1263884   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       31332     3575520   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       13232     3593648   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       44564     7169168   1% /mnt/lustre