[ubuntu] 12.04 clone encrypted drive?

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http://ubuntuforums.org – Is it possible to clone a entire LVM managed encrypted drive to an identical second hard drive? I thought maybe if you had 3 drives one with Ubuntu 12.04 running, one as the 'from' drive and the other as 'to' drive but since the 'from' drive is encrypted I don't know if Ubuntu 12.04 could copy it. The other thing I thought of is to boot with the 'from' drive and copy everything over to the 'to' drive... however I figure there may be some locked files like swap etc. that would not copy over. Any advice is appreciated. (Hardware)