== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 07:49:20 (1726832960)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       17360     1270328   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       14224     1273464   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116      547936     3059084  16% /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116      526604     3080416  15% /mnt/lustre[OST:1]

filesystem_summary:      7666232     1074540     6139500  15% /mnt/lustre