Problem with rsync and mdconfig

[Portable]

Hello,

I'm using freebsd 7.0-current-p4.

Creating a small file based filesystem with 
dd if=/dev/zero of=/home/file bs=16k count=256000
then
mdconfig -a -t vnode -f /home/file -u 0
next creating filesystem with
newfs /dev/md0
Mounting new partition for /test.

Now I'm trying to copy 100k files for /test partition with rsync or cp. After copule seconds server hangs. I can do ps, but can not kill rsync procesess and any other in example apache. Any solution to unhangs a server is to make a reboot. 
I can copy the same files during the normal partition or even another non filebased partition.

sysct kern.maxfiles=65535

Any help will be really nice.

Regards,

xtor