当我尝试sudo mount -t ecryptfs folder1 folder2在我的主文件夹（由 ubuntu 加密）中执行操作时出现此错误我尝试了相同的命令，但文件夹位于 /tmp，它按预期工作。
我得到的错误信息：
ecryptfs_unlink_sigs
ecryptfs_key_bytes=16
ecryptfs_cipher=aes
ecryptfs_sig=66cea2017ad38853
Error mounting eCryptfs: [-22] Invalid argument
在/var/log/syslog：
kernel: [ 197.621331] Mount on filesystem of type eCryptfs explicitly disallowed due to known incompatibilities
mount.ecryptfs: Failed to perform eCryptfs mount: [Invalid argument]
kernel: [ 197.659287] Reading sb failed; rc = [-22]