== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 23:07:43 (1763352463)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       18928     1252376   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       17848     1253456   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       30248     3576772   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       13364     3593656   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       43612     7170428   1%  /mnt/lustre