From owner-freebsd-stable@FreeBSD.ORG Thu Aug 29 21:38:15 2013 Return-Path: Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 7E3BAD06; Thu, 29 Aug 2013 21:38:15 +0000 (UTC) (envelope-from spork@bway.net) Received: from smtp2.bway.net (smtp2.v6.bway.net [IPv6:2607:d300:1::28]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 4C1BD2B78; Thu, 29 Aug 2013 21:38:15 +0000 (UTC) Received: from toasty.sporklab.com (foon.sporktines.com [96.57.144.66]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: spork@bway.net) by smtp2.bway.net (Postfix) with ESMTPSA id 6EA0495875; Thu, 29 Aug 2013 17:38:07 -0400 (EDT) References: <521F05F0.4090607@cloverinformatica.it> <521F0DEB.20408@FreeBSD.org> In-Reply-To: <521F0DEB.20408@FreeBSD.org> Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=us-ascii Message-Id: Content-Transfer-Encoding: quoted-printable From: Charles Sprickman Subject: Re: Boot problem if a ZFS log device is missing Date: Thu, 29 Aug 2013 17:38:06 -0400 To: Andriy Gapon X-Mailer: Apple Mail (2.1085) Cc: Maurizio Vairani , freebsd-fs@FreeBSD.org, freebsd-stable@FreeBSD.org X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 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, 29 Aug 2013 21:38:15 -0000 On Aug 29, 2013, at 5:01 AM, Andriy Gapon wrote: > on 29/08/2013 11:27 Maurizio Vairani said the following: >>=20 >> I am able to boot the PC without a cache device but not without a log = device. Why ? >=20 > The log could potentially contain uncommitted entries. Without the = log device > there is no knowing if it did or did not. And if it did then the pool = is > inconsistent state without the log device and so it can not be = imported. If one is willing to accept that data is lost (like the log device is = totally smoked), is there a way to boot knowing that you may have some = data loss, or is the only option to boot alternate media and force a = pool import (assuming that works without the log device)? Charles >=20 > The cache is not persistent and so there is nothing needed from it = upon a boot. >=20 > --=20 > Andriy Gapon > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"