== sanity test 56db: test 'lfs df -m' only shows MDT devices ========================================================== 19:58:19 (1753747099)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      2210304       10240     2198016   1% /mnt/lustre[MDT:0]
lustre-OST0000_UUID      3771392       20480     3748864   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       25600     3743744   1% /mnt/lustre[OST:1]

filesystem_summary:      7542784       46080     7492608   1% /mnt/lustre