== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 12:36:54 (1772473014)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210304       10240     2198016   1%  /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       21504     3745792   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       25600     3739648   1%  /mnt/lustre[OST:1]

filesystem_summary:      7542784       47104     7485440   1%  /mnt/lustre