== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 16:07:13 (1779998833)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       11704     1259600   1%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       16256     1255048   2%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       28740     3578224   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       14864     3592016   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43604     7170240   1%  /mnt/lustre