== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 11:41:38 (1787586098)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       11580     1259724   1% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       16416     1254888   2% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       27940     3578576   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       15616     3591264   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43556     7169840   1% /mnt/lustre