From owner-freebsd-stable@freebsd.org Thu Apr 1 08:20:53 2021 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 4D2E15C3457 for ; Thu, 1 Apr 2021 08:20:53 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from smtp.freebsd.org (smtp.freebsd.org [96.47.72.83]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4F9x2q4Pxjz4vKN; Thu, 1 Apr 2021 08:20:49 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from onlyone.not-for.work (onlyone.not-for.work [IPv6:2a01:4f8:201:6350::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) (Authenticated sender: lev/mail) by smtp.freebsd.org (Postfix) with ESMTPSA id 06C5F2158F; Thu, 1 Apr 2021 08:20:49 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from [192.168.134.16] (unknown [94.19.224.8]) (Authenticated sender: lev@serebryakov.spb.ru) by onlyone.not-for.work (Postfix) with ESMTPSA id 754CE11EBE; Thu, 1 Apr 2021 11:20:44 +0300 (MSK) Reply-To: lev@FreeBSD.org Subject: Re: Vinum deprecation for FreeBSD 14 - are there any remaining Vinum users? To: Doug Ambrisko , Ed Maste Cc: Chris , freebsd-stable stable References: <20210331233934.GA66902@ambrisko.com> From: Lev Serebryakov Organization: FreeBSD Message-ID: Date: Thu, 1 Apr 2021 11:20:44 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210331233934.GA66902@ambrisko.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Apr 2021 08:20:55 -0000 On 01.04.2021 2:39, Doug Ambrisko wrote: > | > I can only state that I use it only occasionally, and that when I do. I > | > have had no problems with it. I'm glad that it's there when I need it. > | > | Thanks for the reply. Can you comment on your use cases - in > | particular, did you use mirror, stripe, or raid5? If the first two > | then gmirror, gconcat, gstripe, and/or graid are suitable > | replacements. > | > | I'm not looking to deprecate it just because it's old, but because of > | a mismatch between user and developer expectations about its > | stability. > > It would be nice if graid got full support for RAID5 alteast I'm not sure > how much the others are used for that are not fully supported (RAID4, > RAID5, RAID5E, RAID5EE, RAID5R, RAID6, RAIDMDF) according to the man > page. I started to hack in RAID5 full support and try to avoid writes > if members didn't change. This limits our VROC support. My experience, as co-author and maintainer of `sysutil/graid5`, shows, that it is very non-trivial task. It contains many subtle problems. `graid5` still has some undiscovered problems, and I don't think it worth fixing in 2021, when we have ZFS for many years. -- // Lev Serebryakov