Re: changes to the zfs boot (was: Re: git: 72a1cb05cd23 - main - rc(8): Add a zpoolupgrade rc.d script)

On Wed, Nov 9, 2022 at 1:54 PM Patrick M. Hausen <pmh@hausen.com> wrote:

> Hi Warner,
>
> > Am 09.11.2022 um 21:51 schrieb Warner Losh <imp@bsdimp.com>:
> > Yes. For safety, boot loader upgrade is mandatory when you do a zpool
> upgrade of the root filesystem.
> > It was definitely needed in the OpenZFS jump, and we've had one or two
> other flag days since.
>
> That's a given and not a problem. What I fear from my understanding of
> this thread so far is
> that there might be a situation when I upgrade the zpool and the boot
> loader and the system
> ends up unbootable nonetheless.
>
> Possible or not?
>

If all you do is upgrade, then no, modulo bugs that we've thankfully not
had yet. It's when you enable something on the zpool that you can run into
trouble, but that's true independent of upgrade :)

Warner


> Modulo bugs, try test systems first, etc. Of course.
>
> Thanks,
> Patrick