From owner-freebsd-current@freebsd.org Mon Apr 29 18:36:16 2019 Return-Path: Delivered-To: freebsd-current@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 A496C1598CAA for ; Mon, 29 Apr 2019 18:36:16 +0000 (UTC) (envelope-from lausts@acm.org) Received: from cdptpa-cmomta02.email.rr.com (cdptpa-outbound-snat.email.rr.com [107.14.166.227]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "Client", Issuer "CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id BD26A69B67; Mon, 29 Apr 2019 18:36:15 +0000 (UTC) (envelope-from lausts@acm.org) Received: from mail.laus.org ([65.29.112.189]) by cmsmtp with ESMTP id LB0GhaTesdLG1LB0IhO7Tn; Mon, 29 Apr 2019 18:27:50 +0000 Received: from [192.168.1.100] (inspiron [192.168.1.100]) by mail.laus.org (8.15.2/8.15.2) with ESMTPS id x3TIRlLk013975 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO); Mon, 29 Apr 2019 14:27:48 -0400 (EDT) (envelope-from lausts@acm.org) X-Authentication-Warning: mail.laus.org: Host inspiron [192.168.1.100] claimed to be [192.168.1.100] Reply-To: lausts@acm.org Subject: Re: Question about 'gptzfsboot' To: Ian Lepore , FreeBSD Current References: <01d10a11-49b2-2982-01cb-b49a0831d30b@acm.org> <5de29e0b5228d7eb0aac8e0eec116896f11ea862.camel@freebsd.org> <5bf88341-80f0-3aff-f51a-0b1975530f2e@acm.org> <0848043e68641ea47b918b8480ac8a5a3bb773e0.camel@freebsd.org> From: Thomas Laus Openpgp: preference=signencrypt Autocrypt: addr=lausts@acm.org; prefer-encrypt=mutual; keydata= mQGiBDx1NWwRBADARalI5I8kGeBYYYWnZB73T1fU4333yCuRokRvzlAZ5Zhb3hqsNdTEMheN FDjZSL8J5jeJtvSRinY2p09CxpAMoJR9zHLmHl+zEOY8fInbB+KiFtSfGf0blSEY9/+isQP9 xmUIQWUj0kwVtrns7m1HrYLiI07NVFzbHNKqQcbPuwCg0n/KKi+VJiUs5MqLKwGuPotGeZME AIluMetTQwfLyovundMwFYlSZ/Z8JjkMybqgKuiRrZnaBVVZ80NjAYZI73yAZPfQh9mvFxW9 ipc2tSALwDy/tYDpQRK0k+0EsDmwG/wM6OarkqSuFcYx+tP86+2+6Xitn6E/hriIWa/ZQVef /fx7dZzdwhXH6fd34v8o/BuqhawLBACs4MTMGbdSmyI56vCMXWY1yxRPmuygd4vUnXqYwlrM Ee/LjQdreg1zTAJnnW1K+PgOUW/jvS+uAbgxLa3i59/Z4Uu7nB6G1y+Y1cThojUsLnvoJlt1 4XE1U/vnOcvO3evo6knB1qjbAMsZGaVleiVKDq+7XE7swe4WtBJKbYJthbQcVGhvbWFzIExh dXMgPGxhdXN0c0BhY20ub3JnPoh/BBMRAgA/AheAAh4BBgsJCAcDAgYVCAIJCgsEFgIDAQIZ ARYhBBloSoDtPqFEokqZd+v/gtRiCDbPBQJcKgq6BQkhqyDOAAoJEOv/gtRiCDbP9xQAoL7B hCgFeI2K/0koKP3U8OB52nQyAJ0dd/QVJC7tV8gER4tse5GCUN5CHrkCDQRFspgcEAgAjXsi 9WqowAKZ7d2ix6t7fiYgu2QBGWq36NvN+cPBJIu0CnagL1v4W1UrRW/0cInLzgqlWrSU7SFg y1+rGBlusMHf8/faGeZD0XwMdYgTIYdjdK5VZ0GaRWUs0LbHAOJQkOFRHLMAEG8wrc3f1xrn uVJ4JPOA81kTmTXvYTyQNXJBySc0oNSgvSut8aBbNGBZhw9U2V3yXXnnMeWR8+DYrriYdOdR eK7S0LNN8TPY60PJx3KLN9vUY9Cb5Ly0NavF3wREPQqYlNfTMoG/GA/n8XB6SCoMj73oKCyw FLbckBUjFsl7wTeKKvU68V8kWG762fscXhOhRduETGrja09MbwADBQf/WiycmdfNtB41+vvT HQqz9tm3ZHAW2yE53CxfQpvlyS/KwnWgLjl/iV0SHRDede0NJ5yTEqPVhqq7WCdlqVsHPSpX FfvyOgbNmjPmOY/a1nW4UnWSqA7bgQvkthahhoLeHzkU8YKupW0m05RIBpqQER6HwBOksTq4 sWV/lUy1P0VT8GqqPLNklKe2BEu+KhuhLV6XwEG3VrHNoY6/R5CMGvBhZbtiUViCZktmxJAj Fq0VCcuj7+Oo52eq4BL2vMrzLX+2Ib1JSWid6t0N+grXxbr2mv7H2V2/4Vo0XI3IKxPX1mdG y9RBkbRUGyV9A8RlaS0QTnXvsxZTjOnmjxPX64hmBBgRAgAmAhsMFiEEGWhKgO0+oUSiSpl3 6/+C1GIINs8FAlwqCsMFCRhtvicACgkQ6/+C1GIINs/KCgCdGI1pg3HFhr7VEQeC63bhlMKH 0GAAn0mvTZY9OWKGMPoo0x/HdXkdgJHe Message-ID: <940cbef4-67a9-1f8e-2bca-35b41e4a08f9@acm.org> Date: Mon, 29 Apr 2019 14:27:48 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <0848043e68641ea47b918b8480ac8a5a3bb773e0.camel@freebsd.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4wfOuZ31T4FRk8oGpNe1Olu7V2mgk+P/CfxxL18hmGPZcQMTQuPjceiBTgCSAfjr4dXEs5xcxLsutQky5nXTiOm0k0RPjTgqzLpUKwaGS+NxSnBdmEVfvH VMkfpsE/67JusP0e83gM89Kc1SeuU2Bg26H2ffguJ5oEFUow8yoZrcLydycBJibuyVBbG2eny3XRQYGkwfSczTcsu37v/r/JpUo= X-Rspamd-Queue-Id: BD26A69B67 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; spf=softfail (mx1.freebsd.org: 107.14.166.227 is neither permitted nor denied by domain of lausts@acm.org) smtp.mailfrom=lausts@acm.org X-Spamd-Result: default: False [-2.98 / 15.00]; HAS_REPLYTO(0.00)[lausts@acm.org]; HAS_XAW(0.00)[]; REPLYTO_ADDR_EQ_FROM(0.00)[]; R_SPF_SOFTFAIL(0.00)[~all]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; MX_GOOD(-0.01)[cached: mail.mailroute.net]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.46)[-0.464,0]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:14065, ipnet:107.14.160.0/20, country:US]; MID_RHS_MATCH_FROM(0.00)[]; RECEIVED_SPAMHAUS_PBL(0.00)[189.112.29.65.zen.spamhaus.org : 127.0.0.10]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.996,0]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; DMARC_NA(0.00)[acm.org]; IP_SCORE(-0.41)[ipnet: 107.14.160.0/20(-1.11), asn: 14065(-0.89), country: US(-0.06)]; RCVD_IN_DNSWL_NONE(0.00)[227.166.14.107.list.dnswl.org : 127.0.5.0] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Apr 2019 18:36:16 -0000 On 2019-04-29 11:14, Ian Lepore wrote: > > I'm fighting my own video driver troubles (seems like a lot of that > going around lately); on an upgrade of a machine from 11-stable to 12- > stable I lost my console. > > But, a broken kernel and/or userland shouldn't affect your ability to > use the new boot components. That is, you can use gptzfsboot and > loader that contain my fixes, and use them to load an older kernel that > has working video drivers. > Ian: It was more than a broken console. All of the other 2 computers that I upgraded to r346885 were essentially 'dead'. I could not even remotely login to them via ssh. All of them required a hard power button reset to get into single user mode to let me comment out the rc.conf line that loads the DRM driver. The computer could successfully boot without DRM activation but would go to a black console screen again with 'startx'. This also required a hard power button shutdown. I rolled back to r346544 and everything worked again like before. My disastrous update to r346885 included installing a new gptzfsboot and pmbr in the drive boot record. I did not try booting an older kernel using the new gptzfsboot. I was concerned about the lack of ssh login when the computers lost their console, so I just rolled back my system to the last snapshot made a week ago. Tom -- Public Keys: PGP KeyID = 0x5F22FDC1 GnuPG KeyID = 0x620836CF