ZFS grub not updating as expected

[636f6e6e6f72]

tl;dr:

Want to update GRUB_CMDLINE_LINUX_DEFAULT to add boot parameter.

Have modified via /etc/default/grub and then update-grub.

/boot/grub/grub.cfg now contains my new boot parameters.

However this isn't being read at boot.

cat /proc/cmdline confirms this.

Editing the grub entry at boot also confirms this.

The grub entry parameters are whatever is default.

I am booting from ZFS, set up by the Proxmox installer.

What am I missing to update grub?

 

[dietmar]

I am booting from ZFS, set up by the Proxmox installer.

Newer version of the installer do not use grub for zfs systems. Instead, systemd-boot is used to boot the system. So maybe that is the issue?