Automatically unlock encrypted dataset on USB drive on reboot?

[GJSchaller]

I have two USB drives connected to my TrueNAS Mini X+, for onsite and offsite backup. Because the offsite one is, well, offsite, I want to keep it encrypted. For uniformity’s sake, I am encrypting the onsite drive as well.

Because the main dataset is not encrypted, I cannot back them up to an already encrypted pool. My layout for the drives, and the backup datasets, is this:

Is there a way to automatically unlock the datasets named “backup” when the drives are mounted, or when the TrueNAS reboots and they are already attached?

[winnielinnie]

@GJSchaller

Is there a way to automatically unlock the datasets named “backup”

With TrueNAS, only if the User Key format is a keystring, not passphrase.

If you want it to work with a passphrase, you’d need to use a custom script, which would need to know your passphrase.