== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 22:31:20 (1775874680)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210048        7680     2200320   1%  /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       21504     3747840   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       26624     3742720   1%  /mnt/lustre[OST:1]

filesystem_summary:      7542784       48128     7490560   1%  /mnt/lustre