== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 12:37:01 (1787589421)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      2210048        7936     2200064   1% /mnt/lustre[MDT:0] 
lustre-OST0000_UUID      3771392       22528     3737600   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3771392       25600     3731456   1% /mnt/lustre[OST:1] 

filesystem_summary:      7542784       48128     7469056   1% /mnt/lustre