XFCE + encrypted partition inside LVM

[^rooker]

My plan was to mount an encrypted home partition, stored inside an LVM - on an external drive (On Xubuntu 11.10 Oneiric).

Install the package "lvm2" in order to the commandline tools needed:

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apt-get install lvm2

In order to access the LVMs with a file manager (e.g. Thunar), do the following:

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pvscan
vgscan
vgchange -a y
lvscan

Afterwards, the partitions appeared in my file manager.
When I tried to open an encrypted one, it asked me for my password and then stopped with the following error message:

Error starting job: Failed to execute child process "cryptsetup" (No such file or directory).

So I installed the package "cryptsetup" and then tried it again: It worked!