== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 07:33:54 (1743507234)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      2210176       10496     2197632   1% /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       29696     3734528   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       25600     3739648   1% /mnt/lustre[OST:1]

filesystem_summary:      7542784       55296     7474176   1% /mnt/lustre