From owner-freebsd-questions@freebsd.org Mon Jan 15 14:47:57 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8B34FEA7617 for ; Mon, 15 Jan 2018 14:47:57 +0000 (UTC) (envelope-from vas@mpeks.tomsk.su) Received: from relay2.tomsk.ru (mail.sibptus.tomsk.ru [212.73.124.5]) by mx1.freebsd.org (Postfix) with ESMTP id EBCFB78CDC for ; Mon, 15 Jan 2018 14:47:56 +0000 (UTC) (envelope-from vas@mpeks.tomsk.su) X-Virus-Scanned: by clamd daemon 0.98.5_1 for FreeBSD at relay2.tomsk.ru Received: from [212.73.125.240] (HELO admin.sibptus.transneft.ru) by relay2.tomsk.ru (CommuniGate Pro SMTP 5.1.16) with ESMTPS id 39913154; Mon, 15 Jan 2018 20:43:05 +0600 Received: from admin.sibptus.transneft.ru (sudakov@localhost [127.0.0.1]) by admin.sibptus.transneft.ru (8.15.2/8.15.2) with ESMTP id w0FElqad065615; Mon, 15 Jan 2018 21:47:54 +0700 (+07) (envelope-from vas@mpeks.tomsk.su) Received: (from sudakov@localhost) by admin.sibptus.transneft.ru (8.15.2/8.15.2/Submit) id w0FElm2O065611; Mon, 15 Jan 2018 21:47:48 +0700 (+07) (envelope-from vas@mpeks.tomsk.su) X-Authentication-Warning: admin.sibptus.transneft.ru: sudakov set sender to vas@mpeks.tomsk.su using -f Date: Mon, 15 Jan 2018 21:47:48 +0700 From: Victor Sudakov To: Manish Jain Cc: "freebsd-questions@freebsd.org" Subject: Re: Dualboot and ZFS Message-ID: <20180115144747.GA65526@admin.sibptus.transneft.ru> References: <20180115051308.GA45168@admin.sibptus.transneft.ru> <20180115125241.GB60956@admin.sibptus.transneft.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: AO "Svyaztransneft", SibPTUS X-PGP-Key: http://www.dreamwidth.org/pubkey?user=victor_sudakov X-PGP-Fingerprint: 10E3 1171 1273 E007 C2E9 3532 0DA4 F259 9B5E C634 User-Agent: Mutt/1.9.1 (2017-09-22) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Jan 2018 14:47:57 -0000 Manish Jain wrote: > > > Sorry if my question was misleading, I did not mean converting the > > existing system from UFS to ZFS at ada0s3. Suppose ada0s3 is an unused > > slice, I can probably create a zpool thereon. But a few questions > > remain: > > > > 1. Can I install a root-on-zfs system on ada0s3 with bsdinstall? I > > suppose not? > > That's right. You cannot install ZFS onto an MBR slice. ZFS by default > needs an entire disk, partitioned GPT. However, later you suggest it's possible to install freebsd-zfs on a BSD slice. How is that? > > > Why are you creating a zpool within a BSD "a" partition, and not in > > da0s1 directly? I have never seen such a configuration. Is it even > > possible to set the "freebsd-zfs" type on a BSD partition? > > I presume you are using MBR partitioning. Under MBR, freebsd slices are > always nested. The slice contains partitions denoted with a, b and so on. > > I do not think it is viable to set freebsd-zfs on an MBR slice. It just > will not work. ZFS needs an entire disk. If you wish to install on an > MBR slice, you must use rsync after installing freebsd-UFS. Do you mean to say it's viable to install freebsd-zfs on ada0s3a but not viable on ada0s3 ? I don't see logic here. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN AS43859