Your root pool setup doesn't really matter for GRUB compatibility. What's
important is that you have the proper features setup on your boot pool. That's
the one GRUB loads.
On Aug 23, 2021 12:24 PM, Rich Freeman <ri...@gentoo.org> wrote:
>
> On Mon, Aug 23, 2021 at 11:11 AM Neil Bothwick <n...@digimed.co.uk> wrote:
> >
> > On Mon, 23 Aug 2021 04:15:10 -0400, John Covici wrote:
> >
> > > Now, the problem is that I am using zfs and will not give it up, and
> > > the version I have been using 0.8.6 is no longer supported in 5.10
> > > versions of the kernel. So, I need a newer version of zfs and a
> > > rescue cd in case I get into trouble.
> >
> > It doesn't answer your question, other have done that, but FWIW I went
> > from ZFS 0.8.4 to 2.0 a year ago and it went without a hitch. Just emerge
> > the later ZFS packages first, check everything works then update your
> > kernel.
>
> Yeah, I'm pretty conservative with zfs upgrades but have had no
> issues. The one thing I wish is that there were better documentation
> of grub compatibility. I have a root partition I haven't upgraded the
> features on because I have no idea whether it would break grub, and
> you can't reverse this. Sure, I have backups but I really don't want
> to deal with the hassle of restoring a filesystem over some feature
> I'd have to google to even know what it does.
>
> --
> Rich
>
