When using LVM, there will be sooner or later the time when you want to move an existing LVM volume to another server. I used this twice:
dd if=/dev/volumegroupname/logicalvolume bs=4096 | pv | gzip | \
ssh root@example.com 'gzip -d | dd of=/dev/volumegroupname/logicalvolume' bs=4096
Source: Serverfault: Moving a Logical Volume directly from one server to another over the network?
Please check that the required packages are installed, for Debian use this line:
apt-get install coreutils gzip openssh-client pv
For creating a logical volume you can reffer the LVM HOWTO for this or a nice German LVM reference.