== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 00:34:59 (1746074099)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      2210432       18176     2190208   1% /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       21504     3747840   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       25600     3743744   1% /mnt/lustre[OST:1]

filesystem_summary:      7542784       47104     7491584   1% /mnt/lustre