From owner-freebsd-questions@freebsd.org Tue Oct 6 22:59:48 2015 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 EC5209D161E for ; Tue, 6 Oct 2015 22:59:48 +0000 (UTC) (envelope-from woodsb02@gmail.com) Received: from mail-vk0-x22f.google.com (mail-vk0-x22f.google.com [IPv6:2607:f8b0:400c:c05::22f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A72D01B43 for ; Tue, 6 Oct 2015 22:59:48 +0000 (UTC) (envelope-from woodsb02@gmail.com) Received: by vkao3 with SMTP id o3so167604vka.2 for ; Tue, 06 Oct 2015 15:59:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=nzCDx5kKsL1ZLgSr5Rq4VBBd7odwyi0K3jWVdCzJIsw=; b=q1DiRgzkNZj5XLa8ETg6uNCScgrvWFglYp6wWvwzwe29fTjxvheeM+21NoaSfxEvhQ 2mBD5v3Jn2xo2ju6B4jC7zZv4Z1clSzfbiQGhZSt1evu9QCpDzJTEQP7a0kD1ohw4jkF 3KCJAYoWbuF+qJlCEYoIoS+ERjPNqHTQD5BuUNu+7OVPCkvgdFZ2qjlUqS/mVaLHK68J x5x5+MCJfBqQJulXaTcl2eNMH3lUFCUGAbor2aiIPajA/nQUiavKGPF7xFThZ2bA82Gw 82wnWvdSdp/uwlkKIKcq2PftO0bbREeI84hwd17caa7lfQyHTff35EmdFym/HdvANPps ztOQ== MIME-Version: 1.0 X-Received: by 10.31.4.145 with SMTP id 139mr26527974vke.76.1444172387102; Tue, 06 Oct 2015 15:59:47 -0700 (PDT) Received: by 10.31.96.79 with HTTP; Tue, 6 Oct 2015 15:59:47 -0700 (PDT) In-Reply-To: <561420BD.6090700@macfreek.nl> References: <561420BD.6090700@macfreek.nl> Date: Wed, 7 Oct 2015 09:59:47 +1100 Message-ID: Subject: Re: ZFS fatal double fault upon reboot after upgrade to 10.2 From: Ben Woods To: Freek Dijkstra Cc: "freebsd-questions@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Oct 2015 22:59:49 -0000 On Wednesday, 7 October 2015, Freek Dijkstra wrote: > Hi all, > > After an upgrade from FreeBSD 10.0 to 10.2, my system no longer boots > with an error: > > Trying to mount root from zfs:zroot []... > Fatal double fault: > I think you are experiencing a known issue with FreeBSD >= 10.1 on i386 with multi-disk zfs configurations. Refer to the 2nd bullet point here: https://www.freebsd.org/releases/10.2R/errata.html#open-issues Extract: "FreeBSD/i386 10.2-RELEASE installed on ZFS may crash during boot when the ZFS pool mount is attempted while booting an unmodified GENERIC kernel. As described in /usr/src/UPDATING entry 20121223, rebuilding the kernel with options KSTACK_PAGES=4 has been observed to resolve the boot-time crash." Please refer the the above errata link to continue reading. Please also ensure you are familiar with this chapter of the handbook: https://www.freebsd.org/doc/handbook/zfs-advanced.html#zfs-advanced-i386 Regards, Ben -- -- From: Benjamin Woods woodsb02@gmail.com