Comment # 2 on bug 1083827 from Neil Rickert

I think there is an existing bug report for the encryted LVM not using the
entire disk.  I'm not sure of the bug number and haven't searched.

As for the main issue of your bug report -- I think it is just a matter of
being a bit confused.  And the partitioner is confusing about this.

You can have an encrypted LVM (which you did try to setup).
And then you can separately encrypt an individual volume within that LVM.  That
would be double encryption, and serves no useful purpose.

When you were seeing that the volume in the LVM was not encrypted, you were
seeing only that it doesn't have that second layer of encryption.  The LVM
itself still exists on encrypted disk space, so there is no need for that
second layer of encryption.