On Mon, 18 Feb 2013, sk wrote:

I have tried xfs as well and it was ok. However, later it hangs several 
times while transferring files and the only way to stop the transfer was 
rebooting.

Then you need to start looking at your logs. Seems you have some other 
problem causing IO to stall.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se