== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 12:49:50 (1787849390)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       11276     1260028   1%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       16160     1255144   2%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       20560     3586348   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       23044     3583976   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43604     7170324   1%  /mnt/lustre