== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 13:49:30 (1772477370)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       23736     1247568   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       21352     1249952   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       30420     3576600   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       14220     3592800   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       44640     7169400   1%  /mnt/lustre