grub-probe 2.12~rc1-4ubuntu1 fails with zfs root

[satmandu]

While updating to mantic & having zfs root installed, I see this:
/usr/sbin/grub-probe: error: failed to get canonical path of `rpool/ROOT/ubuntu_3oz2ph'.
r

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: grub-common 2.12~rc1-4ubuntu1
Uname: Linux 6.5.0-rc6 x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.27.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Wed Aug 16 13:23:47 2023
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, user)
 SHELL=/bin/bash
 TERM=tmux-256color
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)

[satmandu (satadru-umich)]

This was in part from me not having updated glibc to the 2.38 in mantic-proposed.

Eventually I did get this error: /etc/grub.d/10_linux_zfs: 425: version_find_latest: not found
That was resolved by replacing line 425:

        #linux=$(version_find_latest ${list_basename})
        linux=$(echo ${list_basename} | tr ' ' '\n' | sort -V | head -1 | cat)

[satmandu (satadru-umich)]

Turns out that it needs to be:

        #linux=$(version_find_latest ${list_basename})
        linux=$(echo ${list_basename} | tr ' ' '\n' | sort -Vr | head -1 | cat)