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Date:      Mon, 22 Oct 2018 17:42:54 +0300
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Eugene Grosbein <eugen@grosbein.net>, Glen Barber <gjb@FreeBSD.org>
Cc:        FreeBSD stable <freebsd-stable@FreeBSD.org>
Subject:   Re: krpc: unbootable ZFS-on-root after major upgrade to 11.2
Message-ID:  <d2710811-2679-0dee-f9a5-4fb9f6165a84@FreeBSD.org>
In-Reply-To: <8b31ed45-eddb-e93e-57f6-4bc1387d18ff@grosbein.net>
References:  <8517429b-9e3b-2ea3-80a6-12fc92106252@grosbein.net> <6627d159-fd52-2d10-2d45-97fd02725adc@FreeBSD.org> <5BC9A2E4.9010306@grosbein.net> <6c2f8adb-c0e7-550b-8595-e7a4768d5157@FreeBSD.org> <f6249da6-db28-6672-5d4f-3e711e98f87e@grosbein.net> <20181022140304.GE13668@FreeBSD.org> <1d5236b8-0269-5dce-3f2e-e7b1910836c6@grosbein.net> <20181022141527.GF13668@FreeBSD.org> <c63c24f7-dc7f-785f-ea13-f4a9d7802114@FreeBSD.org> <8b31ed45-eddb-e93e-57f6-4bc1387d18ff@grosbein.net>

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On 22/10/2018 17:32, Eugene Grosbein wrote:
> 22.10.2018 21:21, Andriy Gapon wrote:
>> This is just a typical foot-shooting (and a shortcoming of the kernel build
>> system that allows such foot-shooting to happen).
>> I think that there can be other ways in which you can specify inconsistent
>> kernel options and/or an incorrect subset of modules in MODULES_OVERRIDE to
>> create missing dependencies for critical modules.
>> Do we want to issue an errata for each possible misconfiguration?
> 
> OTOH, we have option krpc in sys/conf/options but it is not mentioned elsewhere:
> not in the Handbook nor in the sys/conf/NOTES or GENERIC. Not a bit of our documentation mentions
> that ZFS requires KRPC for last 10 years.
> 
> One can call it foot-shooting if it is against documentation but that's not the case.

I certainly agree that there is a lack of documentation.
Still, this is a foot-shooting.

Anyway, my point was about a need to create an erratum for this kind of issue.
A documentation update would be much more appropriate.

-- 
Andriy Gapon



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