== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 00:23:32 (1735104212)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       18928     1268760   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       24500     1263188   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116      548976     3058044  16% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116      527640     3079380  15% /mnt/lustre[OST:1]

filesystem_summary:      7666232     1076616     6137424  15% /mnt/lustre