This looks like a possibly useful datapoint that showed up in dmesg at some point during my ongoing debugging / diagnosis attempts:
> dmesg | grep ryptfs [ 782.510299] Mount on filesystem of type eCryptfs explicitly disallowed due to known incompatibilities
This looks like a possibly useful datapoint that showed up in dmesg at some point during my ongoing debugging / diagnosis attempts:
> dmesg | grep ryptfs
[ 782.510299] Mount on filesystem of type eCryptfs explicitly disallowed due to known incompatibilities