== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 02:44:27 (1746081867)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       15568     1272120   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       21112     1266576   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       23424     3583596   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       19740     3587280   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       43164     7170876   1% /mnt/lustre