== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 01:19:23 (1744175963)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       22592     1265096   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       20120     1267568   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       24024     3582996   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       20124     3586896   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       44148     7169892   1% /mnt/lustre