From owner-freebsd-fs@FreeBSD.ORG Sun Dec 6 02:26:00 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 28EE7106566B for ; Sun, 6 Dec 2009 02:26:00 +0000 (UTC) (envelope-from josh@multipart-mixed.com) Received: from joshcarter.com (67-207-137-80.slicehost.net [67.207.137.80]) by mx1.freebsd.org (Postfix) with ESMTP id 07E598FC12 for ; Sun, 6 Dec 2009 02:25:59 +0000 (UTC) Received: from [192.168.1.141] (dsl081-096-235.den1.dsl.speakeasy.net [64.81.96.235]) by joshcarter.com (Postfix) with ESMTPSA id AD9ECC862C; Sun, 6 Dec 2009 02:25:58 +0000 (UTC) Mime-Version: 1.0 (Apple Message framework v1077) Content-Type: text/plain; charset=us-ascii From: Josh Carter In-Reply-To: <20091205191526.GR73250@gremlin.foo.is> Date: Sat, 5 Dec 2009 19:25:56 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20091205170400.GM73250@gremlin.foo.is> <8555674.871260033069220.JavaMail.root@zimbra> <20091205184112.GP73250@gremlin.foo.is> <5da0588e0912051052p25fb743ele098ed9cb9de8fa0@mail.gmail.com> <20091205190641.GQ73250@gremlin.foo.is> <20091205191526.GR73250@gremlin.foo.is> To: Baldur Gislason X-Mailer: Apple Mail (2.1077) Cc: freebsd-fs@freebsd.org Subject: Re: ZFS and reordering drives X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Dec 2009 02:26:00 -0000 FWIW, I've hit drive re-ordering problems several times on FreeBSD and = OpenSolaris (most of those due to me doing abusive things to the system = on purpose). In all cases a "zfs export [pool]" and "zfs import [pool]" = fixed the issue. I'm not sure exactly what ZFS is doing, but even across = reboots it appears to remember the configuration it used to see, and = insist on seeing it again. An export/import forces ZFS to forget what it = knows and look at what's on the drives. -Josh