== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 22:02:24 (1777428144)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       20348     1250956   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       28156     1243148   3%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       31928     3575092   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       13688     3593332   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       45616     7168424   1%  /mnt/lustre