Re: [gentoo-user] rescue cd for zfs 2.1 or thereabouts

[John Covici <covici@ccs.covici.com>]

On Mon, 23 Aug 2021 14:13:30 -0400,
Neil Bothwick wrote:
> 
> [1  <text/plain; US-ASCII (quoted-printable)>]
> On Mon, 23 Aug 2021 14:02:29 -0400, Rich Freeman wrote:
> 
> > > Aren't new features only applied to newly created pools and datasets?
> > > If /boot was compatible with GRUB it should still be. At least that's
> > > how I read the einfo messages zfs spits out.  
> > 
> > That is correct.  I want to know when I can enable the new features.
> > Of course, it would also be nice to know which features must be
> > disabled when creating a new boot pool.
> > 
> > It is just frustrating that as far as I can tell, there is no
> > documentation about what features grub supports.  It wouldn't be hard
> > for them to just say "here are the zpool features known to work in
> > grub version foo."  The best I've found is the Arch wiki, which has
> > the disclaimer that it is probably out of date and to check the man
> > pages, but of course the man pages don't actually say anything.
> 
> All I could find was this:
> 
> http://git.savannah.gnu.org/cgit/grub.git/tree/grub-core/fs/zfs/zfs.c#n276
> 
> For a program with so much documentation, GRUB seems sorely lacking in
> this respect. It makes me glad I decided to keep /boot off my zpools.

I did exactly that -- when you emerge zfs, it gives you the create
command, so you can tell by that the features it wants, but there
seems to be no good reason to have a boot pool, I can afford the 1 or
2 gig space.
So back to my original question, I downloaded -- after a lot of
trouble finding it -- the Ubuntu 21.04 live server as they call it,
but I cannot find any documentation as to how to use it as a rescue
disk -- seems to be just an install disk.  Am I missing something
here?

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici wb2una
         covici@ccs.covici.com