== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 14:08:51 (1787854131)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       11592     1259712   1%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       16400     1254904   2%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       24636     3582384   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       18972     3588048   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43608     7170432   1%  /mnt/lustre