We ran sanity tests with 2 OSTs and got following errors.

== sanity test 56u: check lfs find -stripe-index works == 08:53:30 (1377824010)
sanity test_56u: @@@@@@ FAIL: "lfs find -stripe-index 0 -type f /mnt/lustre/d0.sanity/d56u" wrong: found 16, expected 12

We found that the newly created files located on two OSTs rather than one. This might happen when the default stripe of mount point is two. So I think when creating the file, 'lfs setstripe -i 1' might not be enough, '-c 1' should be added too.

I will push the patch soon.