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Date:      Wed, 09 Nov 2022 20:45:09 +0100
From:      Alexander Leidinger <Alexander@leidinger.net>
To:        "Patrick M. Hausen" <pmh@hausen.com>
Cc:        Warner Losh <imp@bsdimp.com>, Mark Millard <marklmi@yahoo.com>, tsoome@freebsd.org, Li-Wen Hsu <lwhsu@freebsd.org>, current@freebsd.org
Subject:   Re: changes to the zfs boot (was: Re: git: 72a1cb05cd23 - main - rc(8): Add a zpoolupgrade rc.d script)
Message-ID:  <20221109204509.Horde.lh5parVrWDSJ7kQCFa64hqe@webmail.leidinger.net>
In-Reply-To: <460205F9-5D59-4033-813B-C34E01BFD6C4@hausen.com>
References:  <202211070339.2A73dJlO027991@gitrepo.freebsd.org> <20221107121514.Horde.nulS9Wg1s3yzAsXXkuJRBa9@webmail.leidinger.net> <CANCZdfrdc%2BDbv6sDyDLcWNpXnWScEmpUsGu3q8%2BMbZRjDS8eig@mail.gmail.com> <20221108105053.Horde.eqgFiBJe2ngGAj6BkXcv5-Z@webmail.leidinger.net> <20221109134610.Horde.JB7ibQTWprHbmIUfhg7JY7f@webmail.leidinger.net> <CANCZdfptmipq%2BsS0AQ1%2B7EmLT-7YdKv8s%2BnCV7ON1Qy6-C6N9A@mail.gmail.com> <460205F9-5D59-4033-813B-C34E01BFD6C4@hausen.com>

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[-- Attachment #1 --]
Quoting "Patrick M. Hausen" <pmh@hausen.com> (from Wed, 9 Nov 2022  
20:02:55 +0100):

> Hi all,
>
>> Am 09.11.2022 um 16:54 schrieb Warner Losh <imp@bsdimp.com>:
>> >>    There is a fixed list of features we support in the boot loader:
>> >>    [...]
>> >>    Any feature not on this list will cause the boot loader to
>> >> reject the pool.
>
> I admit that I do not grasp the full implications of this thread and  
> the proposed
> and debated changes. Does that imply that a simple "zpool upgrade" of the
> boot/root pool might lead to an unbootable system in the future - even if the
> boot loader is upgraded as it should, too?

For a recent pool (zpool get all rpool | grep -q feature && echo  
recent enough): no.

But "zpool set feature@edonr=enabled rpool" (or any other feature not  
in the list we talk about) would render it unbootable.

Bye,
Alexander.

-- 
http://www.Leidinger.net Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF
http://www.FreeBSD.org    netchild@FreeBSD.org  : PGP 0x8F31830F9F2772BF

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