zfs change passphrase

[rcd]

How do you change the passphrase on proxmox zfs?

https://pve.proxmox.com/wiki/ZFS_on_Linux explains how to set a password, but not how to remove or change it.

The internet suggests "zfs key ..." but that command is not available on proxmox' version of zfs.

 

[Dunuin]

ZFS isn't a proxmox specific feature. Look at the ZFS documentation.

 

[rcd]

I know ZFS isn't a proxmox specific feature, but the version used in proxmox is different from the one documented in Oracle.

Anyway, this irrelevant point apart, when I try zfs change-key, I get this error:

# zfs change-key -i poolz/secdata
Key change error: Parent must be encrypted.

If I don't mount it using zfs mount -al it doesn't mount, so I think it must be encrypted...