== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 19:09:34 (1784243374)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       11612     1259692   1%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       16460     1254844   2%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       22952     3583928   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       20644     3585900   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43596     7169828   1%  /mnt/lustre