From owner-freebsd-current@FreeBSD.ORG Mon Dec 19 16:49:05 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8893F106564A for ; Mon, 19 Dec 2011 16:49:05 +0000 (UTC) (envelope-from mike@reifenberger.com) Received: from mail-out.m-online.net (mail-out.m-online.net [IPv6:2001:a60:0:32:0:1:25:1]) by mx1.freebsd.org (Postfix) with ESMTP id 1692F8FC1E for ; Mon, 19 Dec 2011 16:49:04 +0000 (UTC) Received: from frontend1.mail.m-online.net (frontend1.mail.intern.m-online.net [192.168.8.180]) by mail-out.m-online.net (Postfix) with ESMTP id C278C1802EF9; Mon, 19 Dec 2011 17:49:03 +0100 (CET) Received: from localhost (dynscan1.mnet-online.de [192.168.8.164]) by mail.m-online.net (Postfix) with ESMTP id 714641C0011E; Mon, 19 Dec 2011 17:49:03 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.180]) by localhost (dynscan1.mail.m-online.net [192.168.8.164]) (amavisd-new, port 10024) with ESMTP id 24akbetp1gI7; Mon, 19 Dec 2011 17:48:58 +0100 (CET) Received: from mail.reifenberger.com (ppp-93-104-61-230.dynamic.mnet-online.de [93.104.61.230]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPS; Mon, 19 Dec 2011 17:48:58 +0100 (CET) Received: by mail.reifenberger.com (Postfix, from userid 1001) id 0179924B97; Mon, 19 Dec 2011 17:48:57 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by mail.reifenberger.com (Postfix) with ESMTP id F271924B96; Mon, 19 Dec 2011 17:48:56 +0100 (CET) Date: Mon, 19 Dec 2011 17:48:56 +0100 (CET) From: Michael Reifenberger To: Peter Maloney In-Reply-To: <4EEF5B5C.90905@brockmann-consult.de> Message-ID: References: <4EEF488E.1030904@freebsd.org> <4EEF5B5C.90905@brockmann-consult.de> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-current@freebsd.org Subject: Re: Uneven load on drives in ZFS RAIDZ1 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Dec 2011 16:49:05 -0000 On Mon, 19 Dec 2011, Peter Maloney wrote: > Swapping disks (or even removing one depending on controller, etc. when > it fails) without labels can be bad. > eg. Since ZFS uses (and searches for) its own UUID partition signatures s disk wapping shouldn't matter as long enough disks are found. Set vfs.zfs.debug=1 during boot to watch what is searched for. Bye/2 --- Michael Reifenberger Michael@Reifenberger.com http://www.Reifenberger.com