== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 14:07:34 (1788804454)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       11512     1259792   1% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       16340     1254964   2% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       27928     3578896   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       15680     3590864   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43608     7169760   1% /mnt/lustre