From owner-freebsd-fs@freebsd.org Tue Apr 9 00:22:31 2019 Return-Path: Delivered-To: freebsd-fs@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 1861C156D972; Tue, 9 Apr 2019 00:22:31 +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 E25686B3E0; Tue, 9 Apr 2019 00:22:19 +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 x390M58m037896 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 9 Apr 2019 02:22:09 +0200 (CEST) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: kpn@neutralgood.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 x390M4YI051921 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Tue, 9 Apr 2019 07:22:04 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: about zfs and ashift and changing ashift on existing zpool To: "Kevin P. Neal" , Peter Jeremy References: <20190407153639.GA41753@rpi3.zyxst.net> <20190408212822.GD13734@server.rulingia.com> <20190409000009.GA65388@neutralgood.org> Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org, tech-lists , freebsd-geom@freebsd.org, Alexander Motin From: Eugene Grosbein Message-ID: <9590cb82-64be-a2f9-a812-36f0ea324e4d@grosbein.net> Date: Tue, 9 Apr 2019 07:21:57 +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: <20190409000009.GA65388@neutralgood.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_00,LOCAL_FROM,SPF_PASS autolearn=no autolearn_force=no version=3.4.2 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 3.4.2 (2018-09-13) on hz.grosbein.net X-Rspamd-Queue-Id: E25686B3E0 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; spf=permerror (mx1.freebsd.org: domain of eugen@grosbein.net uses mechanism not recognized by this client) smtp.mailfrom=eugen@grosbein.net X-Spamd-Result: default: False [-3.55 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; MX_INVALID(0.50)[greylisted]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[grosbein.net]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; R_SPF_PERMFAIL(0.00)[]; NEURAL_HAM_SHORT(-0.82)[-0.822,0]; RCPT_COUNT_SEVEN(0.00)[7]; IP_SCORE(-1.13)[ip: (-1.48), ipnet: 2a01:4f8::/29(-2.16), asn: 24940(-2.01), country: DE(-0.01)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/29, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Apr 2019 00:22:31 -0000 09.04.2019 7:00, Kevin P. Neal wrote: >> My guess (given that only ada1 is reporting a blocksize mismatch) is that >> your disks reported a 512B native blocksize. In the absence of any override, >> ZFS will then build an ashift=9 pool. [skip] > smartctl 7.0 2018-12-30 r4883 [FreeBSD 11.2-RELEASE-p4 amd64] (local build) > Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org > > === START OF INFORMATION SECTION === > Vendor: SEAGATE > Product: ST2400MM0129 > Revision: C003 > Compliance: SPC-4 > User Capacity: 2,400,476,553,216 bytes [2.40 TB] > Logical block size: 512 bytes > Physical block size: 4096 bytes Maybe it't time to prefer "Physical block size" over "Logical block size" in relevant GEOMs like GEOM_DISK, so upper levels such as ZFS would do the right thing automatically.