From owner-freebsd-stable@freebsd.org Wed Jul 31 15:30:54 2019 Return-Path: Delivered-To: freebsd-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 3A999A1934 for ; Wed, 31 Jul 2019 15:30:54 +0000 (UTC) (envelope-from mike@sentex.net) Received: from pyroxene.sentex.ca (unknown [IPv6:2607:f3e0:0:3::18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "pyroxene.sentex.ca", Issuer "Let's Encrypt Authority X3" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 45zHSM5jhlz3xpB for ; Wed, 31 Jul 2019 15:30:43 +0000 (UTC) (envelope-from mike@sentex.net) Received: from [IPv6:2607:f3e0:0:4:4a9:e86e:cf88:1178] ([IPv6:2607:f3e0:0:4:4a9:e86e:cf88:1178]) by pyroxene.sentex.ca (8.15.2/8.15.2) with ESMTPS id x6VFUe2q054829 (version=TLSv1.2 cipher=AES128-SHA bits=128 verify=NO) for ; Wed, 31 Jul 2019 11:30:41 -0400 (EDT) (envelope-from mike@sentex.net) To: freebsd-stable@freebsd.org From: mike tancsa Subject: extremely slow boot of RELENG_10 Message-ID: <9f30d6b9-81bb-769c-1a03-1e81277ae07d@sentex.net> Date: Wed, 31 Jul 2019 11:30:43 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Language: en-US X-Rspamd-Queue-Id: 45zHSM5jhlz3xpB X-Spamd-Bar: + Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of mike@sentex.net designates 2607:f3e0:0:3::18 as permitted sender) smtp.mailfrom=mike@sentex.net X-Spamd-Result: default: False [1.33 / 15.00]; ARC_NA(0.00)[]; RDNS_NONE(1.00)[]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f3e0::/32]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-stable@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; DMARC_NA(0.00)[sentex.net]; MX_GOOD(-0.01)[smtp.sentex.ca]; NEURAL_HAM_SHORT(-0.14)[-0.135,0]; IP_SCORE(-1.72)[ipnet: 2607:f3e0::/32(-4.94), asn: 11647(-3.57), country: CA(-0.09)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:11647, ipnet:2607:f3e0::/32, country:CA]; HFILTER_HOSTNAME_UNKNOWN(2.50)[]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2] 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: Wed, 31 Jul 2019 15:30:54 -0000 While moving a pair of ZFS disks from an *very* old motherboard to a new one, I ran into an odd problem I had not seen before.  The box was running just fine RELENG_10 from FreeBSD 10.1-STABLE #18 r279918 on 10yr old MB. Boots normally and expected speeds for old hardware/CPU.  But on the new one, as soon as the |\-/|\ starts spinning, it looks like its 1/100th of the speed it should be.  Unfortunately, we didnt have the luxury to wait for it to boot up all the way.  We put the disks back in the old motherboard, did the RELENG_11 upgrade which included putting in the new boot blocks after zpool upgrade and then the disks booted just fine in the new box.  We at first thought it was a hardware issue, but same behaviour on another new MB, new SATA cables etc etc. Any idea what was going on behind the scenes that might have caused it ?  Is there something about the way the old boot blocks would interact poorly with new motherboards (in this case, a SuperMicro X11SSH-F) ?     ---Mike