== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 19:33:20 (1788651200)
UUID                   1K-blocks        Used   Available Use% Mounted on 
lustre-MDT0000_UUID      1414116       19300     1252004   2% /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       10032     1261272   1% /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       23696     3583240   1% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       19904     3586752   1% /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43600     7169992   1% /mnt/lustre