grub: compression algorithm inherited not supported

Runningman2552

New Member
Mar 22, 2023
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On my proxmox 8.1.10 system after "apt update; apt upgrade; apt autoremove" I get the following messages:

[...]Generating grub configuration file ...
Found linux image: /boot/vmlinuz-6.5.13-5-pve
Found initrd image: /boot/initrd.img-6.5.13-5-pve
Found linux image: /boot/vmlinuz-6.5.13-1-pve
Found initrd image: /boot/initrd.img-6.5.13-1-pve
Found linux image: /boot/vmlinuz-6.2.16-20-pve
Found initrd image: /boot/initrd.img-6.2.16-20-pve
done
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 6.5.11-7-pve /boot/vmlinuz-6.5.11-7-pve
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-6.5.13-5-pve
Found initrd image: /boot/initrd.img-6.5.13-5-pve
/usr/sbin/grub-probe: error: compression algorithm inherit not supported
.
Found linux image: /boot/vmlinuz-6.5.13-1-pve
Found initrd image: /boot/initrd.img-6.5.13-1-pve
Found linux image: /boot/vmlinuz-6.5.11-8-pve
Found initrd image: /boot/initrd.img-6.5.11-8-pve
Found linux image: /boot/vmlinuz-6.2.16-20-pve
Found initrd image: /boot/initrd.img-6.2.16-20-pve
Found linux image: /boot/vmlinuz-5.13.19-6-pve
Found initrd image: /boot/initrd.img-5.13.19-6-pve
Found linux image: /boot/vmlinuz-5.13.19-2-pve
Found initrd image: /boot/initrd.img-5.13.19-2-pve
/usr/sbin/grub-probe: error: compression algorithm inherit not supported

what happened, what can I do?
 
I saw with "zpool status" that my pools were missing a zfs feature, then I did a "zpool grade" on the pools, does this fix it?
 
I saw with "zpool status" that my pools were missing a zfs feature, then I did a "zpool upgrade" [edited by KN] on the pools, does this fix it?

*facepalm*

Oh geez... No. You just made it worse.

Grub doesn't support certain features on the boot pool. Now you'll likely have to recreate it WITHOUT those features. Or try switching to systemd-boot, or zfsbootmenu.

Too much for my brain right now, do a search on it.


I never understood why you would want /boot on a zpool in the 1st place, when it's that damn fragile.


https://www.truenas.com/community/t...o-cobia-and-upgrading-zpools-a-solved.114060/

https://pve.proxmox.com/wiki/ZFS:_Switch_Legacy-Boot_to_Proxmox_Boot_Tool#Background