== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 07:34:12 (1733402052)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       14764     1272924   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       22040     1265648   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116      547600     3059420  16% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116      527932     3079088  15% /mnt/lustre[OST:1]

filesystem_summary:      7666232     1075532     6138508  15% /mnt/lustre