From owner-freebsd-questions@freebsd.org Wed Mar 21 12:27:38 2018 Return-Path: Delivered-To: freebsd-questions@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 0FA84F63ECB for ; Wed, 21 Mar 2018 12:27:38 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (wonkity.com [67.158.26.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "wonkity.com", Issuer "wonkity.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 92D9A6CAB5 for ; Wed, 21 Mar 2018 12:27:37 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (localhost [127.0.0.1]) by wonkity.com (8.15.2/8.15.2) with ESMTPS id w2LCRaqM099844 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 21 Mar 2018 06:27:36 -0600 (MDT) (envelope-from wblock@wonkity.com) Received: from localhost (wblock@localhost) by wonkity.com (8.15.2/8.15.2/Submit) with ESMTP id w2LCRZYa099840; Wed, 21 Mar 2018 06:27:36 -0600 (MDT) (envelope-from wblock@wonkity.com) Date: Wed, 21 Mar 2018 06:27:35 -0600 (MDT) From: Warren Block To: Victor Sudakov cc: freebsd-questions@freebsd.org Subject: Re: Solved. Re: Dualboot and ZFS In-Reply-To: <20180319025914.GA57490@admin.sibptus.transneft.ru> Message-ID: References: <20180115125241.GB60956@admin.sibptus.transneft.ru> <20180115144747.GA65526@admin.sibptus.transneft.ru> <20180115151526.GA66342@admin.sibptus.transneft.ru> <20180116034929.GB89443@admin.sibptus.transneft.ru> <20180131082738.GA46395@admin.sibptus.transneft.ru> <547e65d16ef16667f61d88463ca73079@roundcube.fjl.org.uk> <20180319025914.GA57490@admin.sibptus.transneft.ru> User-Agent: Alpine 2.21 (BSF 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (wonkity.com [127.0.0.1]); Wed, 21 Mar 2018 06:27:36 -0600 (MDT) 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: Wed, 21 Mar 2018 12:27:38 -0000 On Mon, 19 Mar 2018, Victor Sudakov wrote: > On 2018-01-31 08:27, Victor Sudakov wrote: >>> My pool works successfully in a bhyve environment, but in VirtualBox >>> 5.0.14 >>> (to test the real boot sequence) I get this message from zfsboot: >>> >>> zfsboot: No ZFS pools located, can't boot >>> >>> However, if I boot from LiveCD, the pool is there, it's healthy and >>> can be imported. > > Finally, and thanks to Eugene Grossbein, the problem is solved. > > The gist of the problem was the presence of a BSD label in the slice > where the bootable zfs pool was located. It turns out that zfsboot > ignores the slice if it finds a BSD label therein. The bootable zpool > should be directly on the slice (like on da1s1, and not da1s1a). > > This means that both zfsboot(8) and the articles in the FreeBSD wiki > are erroneous because they all suggest "gpart create -s BSD ada0s1" - > in fact, it's fatal. > > > Below is the final working example: > > ================================================ > #!/bin/sh > > sysctl kern.geom.debugflags=0x10 Please reconsider doing this without it being required. It means "allow destroying mounted partitions" and is usually not necessary.