Review the following considerations when attempting to mount an encrypted ZFS file system:
If an encrypted file system key is not available during boot time, the file system is not mounted automatically. For example, a file system with an encryption policy set to passphrase,prompt will not mount during boot time because the boot process is not interrupted to prompt for a passphrase.
If you want to mount a file system with an encryption policy set to passphrase,prompt at boot time, you will need to either explicitly mount it with the zfs mount command and specify the passphrase or use the zfs key –l command to be prompted for the key after the system is booted.
For example:
# zfs mount -a Enter passphrase for 'tank/home/darren': xxxxxxxx Enter passphrase for 'tank/home/ws': xxxxxxxx Enter passphrase for 'tank/home/mark': xxxxxxxx
If an encrypted file system's keysource property points to a file in another file system, the mount order of the file systems can impact whether the encrypted file system is mounted at boot, particularly if the file is on removable media.