== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 22:29:52 (1763350192)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       17132     1254172   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       15884     1255420   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       30264     3576728   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       13348     3593644   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       43612     7170372   1%  /mnt/lustre