== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 16:21:22 (1761250882)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       15828     1255476   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       21228     1250076   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       20752     3586156   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       22840     3583676   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       43592     7169832   1%  /mnt/lustre