Set up a new laptop for Ubuntu recently and opted for ZFS encryption, impressed it was now a mainstream install option. Sadly amused after setup that it suspends indefinitely without requiring the passphrase, ie. keeps unlocked volumes in memory. This makes the encryption basically pointless. (NB. This category of issue was highlighted in the recent interview by the resurfaced Alpha Bay operator, specifically after his former associate Cazes was bagged in Bangkok after an international police sting allegedly created a server issue explicitly to require him to log in to the so they could access his credentials unencrypted. The resurfaced operator's reported solution was apparently to always power down, even on a bathroom break.)