== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 06:14:38 (1768562078)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210176       10240     2197888   1%  /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       22528     3744768   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       23552     3736576   1%  /mnt/lustre[OST:1]

filesystem_summary:      7542784       46080     7481344   1%  /mnt/lustre