== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 05:10:23 (1753434623)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       18216     1269472   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       25820     1261868   3% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       21612     3585380   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       24040     3582924   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       45652     7168304   1% /mnt/lustre