== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 23:44:52 (1763354692)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210304       14976     2193280   1%  /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       22528     3737600   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       25600     3743744   1%  /mnt/lustre[OST:1]

filesystem_summary:      7542784       48128     7481344   1%  /mnt/lustre