== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 19:28:04 (1748474884)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       20992     1266696   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       19048     1268640   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       30456     3576564   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       13720     3593300   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       44176     7169864   1% /mnt/lustre