From owner-freebsd-stable@freebsd.org Tue Apr 19 10:20:17 2016 Return-Path: Delivered-To: freebsd-stable@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 488C5B143D6 for ; Tue, 19 Apr 2016 10:20:17 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [78.47.246.247]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 3D5C912D3; Tue, 19 Apr 2016 10:20:15 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (root@eg.sd.rdtc.ru [62.231.161.221]) by hz.grosbein.net (8.14.9/8.14.9) with ESMTP id u3JAK9nY088390 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 19 Apr 2016 12:20:10 +0200 (CEST) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: melissa-freebsd@littlebluecar.co.uk Received: from eg.sd.rdtc.ru (eugen@localhost [127.0.0.1]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTP id u3JAJw9K024202; Tue, 19 Apr 2016 17:19:58 +0700 (KRAT) (envelope-from eugen@grosbein.net) Subject: Re: 10.3 and reboot -r (reroot) To: Melissa Jenkins References: <45B67BCE-540F-432A-9AA2-192B20312D27@littlebluecar.co.uk> <5715F73F.7050208@grosbein.net> Cc: freebsd-stable@freebsd.org, Edward Tomasz Napierala From: Eugene Grosbein X-Enigmail-Draft-Status: N1110 Message-ID: <5716064E.3080005@grosbein.net> Date: Tue, 19 Apr 2016 17:19:58 +0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=1.3 required=5.0 tests=BAYES_00, DATE_IN_FUTURE_96_Q, LOCAL_FROM autolearn=no version=3.3.2 X-Spam-Report: * 1.0 DATE_IN_FUTURE_96_Q Date: is 4 days to 4 months after Received: date * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 2.6 LOCAL_FROM From my domains X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on hz.grosbein.net X-Spam-Level: * X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Apr 2016 10:20:17 -0000 CCing Edward Tomasz Napierala, "Root Remount" project contact. On 19.04.2016 16:42, Melissa Jenkins wrote: > My apologies: > > [root@test:~]# sysctl -A kern.proc.pathname > [root@test:~]# kenv vfs.root.mountfrom > nfs:nfsserver:/bootenv/10.3 > [root@test:~]# kenv vfs.root.mountfrom=zfs:test/root_role > vfs.root.mountfrom="zfs:test/root_role" > [root@test:~]# reboot -r > [root@test:~]# > > Apr 19 09:35:28 test reroot: rerooted by melissa > Apr 19 09:35:28 test init: failed to get kern.proc.pathname: No such file or directory > Apr 19 09:35:28 test init: reroot failed; going to single user mode > Apr 19 09:35:28 test root: /etc/rc: WARNING: could not store hostuuid in /etc/hostid. > Apr 19 09:35:31 test root: /etc/rc: WARNING: failed to start dev > > It actually doesn't do seem to either drop to single user mode or actually kill anything off. If you reroot to the existing directory it seems to panic though I don't have a crash file from this. > > The machine has been booted from a vanilla 10.3 PXE boot. I've then created a zfs file system on local disks, installed the operating system in it and would like to 'restart the system into' this new file system. Normally I'd use the init_script and init_chroot kenv flags but rerooting seems cleaner and may allow chroots to work better It seems, reroot currently does not work for PXE-booted systems. You should fill a PR.