== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 11:35:55 (1788363355)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210176        9728     2198400   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