== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 13:48:20 (1772477300)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       23092     1248212   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       19944     1251360   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       30964     3576056   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       14608     3592412   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       45572     7168468   1%  /mnt/lustre