== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 18:37:01 (1764805021)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       13644     1257660   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       19008     1252296   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       31120     3575816   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       12464     3594444   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       43584     7170260   1%  /mnt/lustre