== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 14:56:03 (1771444563)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       24744     1246560   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       22056     1249248   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       23552     3583468   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       22028     3584992   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       45580     7168460   1%  /mnt/lustre