== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 11:34:14 (1779982454)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210176       10240     2197888   1%  /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       24576     3727360   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       27648     3732480   1%  /mnt/lustre[OST:1]

filesystem_summary:      7542784       52224     7459840   1%  /mnt/lustre