== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 12:32:35 (1772472755)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2210304       10368     2197888   1%  /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       23552     3745792   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3770368       23552     3719168   1%  /mnt/lustre[OST:1]

filesystem_summary:      7541760       47104     7464960   1%  /mnt/lustre