From owner-freebsd-stable@freebsd.org Mon Oct 22 15:21:20 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 82F2EFFFB9C for ; Mon, 22 Oct 2018 15:21:20 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [IPv6:2a01:4f8:d12:604::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 08F137EAC6; Mon, 22 Oct 2018 15:21:19 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [IPv6:2a03:3100:c:13:0:0:0:5]) by hz.grosbein.net (8.15.2/8.15.2) with ESMTPS id w9MFLCGG010298 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 22 Oct 2018 17:21:13 +0200 (CEST) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: gjb@freebsd.org Received: from [10.58.0.4] ([10.58.0.4]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTPS id w9MFLBoJ075058 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Mon, 22 Oct 2018 22:21:11 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: krpc: unbootable ZFS-on-root after major upgrade to 11.2 To: Glen Barber , Andriy Gapon 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> <20181022140304.GE13668@FreeBSD.org> <1d5236b8-0269-5dce-3f2e-e7b1910836c6@grosbein.net> <20181022141527.GF13668@FreeBSD.org> <20181022143559.GG13668@FreeBSD.org> Cc: FreeBSD stable From: Eugene Grosbein Message-ID: <80971314-a8f0-6539-e4cc-ce5774f3c1af@grosbein.net> Date: Mon, 22 Oct 2018 22:21:06 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <20181022143559.GG13668@FreeBSD.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_00,LOCAL_FROM,SPF_PASS autolearn=no autolearn_force=no version=3.4.1 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 SPF_PASS SPF: sender matches SPF record * 2.6 LOCAL_FROM From my domains X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on hz.grosbein.net X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Oct 2018 15:21:20 -0000 22.10.2018 21:35, Glen Barber 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? > > Not necessarily. I think it is a matter of how common the edge case is, > for example. I am perfectly fine removing the errata entry if this is > an extreme edge case. Well, usage of stripped-down kernel instead of GENERIC may be less common than it was 10 years ago. But not extreme rare because of low-class virtual machines. Same with stripped-down installed set of files without full set of kernel modules but this may be more extreme as (virtual) disk space is more cheap than RAM. ZFS-on-root is definitely not so seldom.