From owner-freebsd-geom@FreeBSD.ORG Wed Jun 10 08:16:50 2009 Return-Path: Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 53C1A1065673 for ; Wed, 10 Jun 2009 08:16:50 +0000 (UTC) (envelope-from dan.naumov@gmail.com) Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.250]) by mx1.freebsd.org (Postfix) with ESMTP id 0E6B98FC15 for ; Wed, 10 Jun 2009 08:16:49 +0000 (UTC) (envelope-from dan.naumov@gmail.com) Received: by an-out-0708.google.com with SMTP id c3so336832ana.13 for ; Wed, 10 Jun 2009 01:16:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=q7RcLudWQYV0lCR0bxux1u4Awyj+rzruPf8dBIvwku8=; b=ETghBrIgZrlGH8JoqN/6GEmD5dEV0hF/dmGU1HCw2h77DvPEoc8VUDRn9iaaLJoTrY 1fNCWwjMIOOUXbmOv46yzgBawCpncizsfAxCQG5Gcqttyz8WIsWUnKNCeRJB3kvrL0xU XZVPAHHpEZ/x+F4H32yNkBtEJv7LJGFTpPJuo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=SRSlfwYnUvKDAehjs514IGI55J8j5MO/svbY2JO2msP0dBSAk6+KN4NxHr43+HUeS4 z4O1eyXkYXeS42YnQR9pulVjMnqRcMz16s9JDlre85xgJXBZEeBfn783QotIoRIB/Jvo WgVgFmMGweg52oW8Uo2SGczpeYlLtkAF7UtH0= MIME-Version: 1.0 Received: by 10.100.231.4 with SMTP id d4mr946827anh.24.1244621809429; Wed, 10 Jun 2009 01:16:49 -0700 (PDT) In-Reply-To: <4A2F6778.4050200@gmail.com> References: <4A2F6778.4050200@gmail.com> Date: Wed, 10 Jun 2009 11:16:49 +0300 Message-ID: From: Dan Naumov To: cooper Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-geom@freebsd.org Subject: Re: how is multipath information stored X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Jun 2009 08:16:50 -0000 This is a really wild guess (so correct me if I am wrong), but I would guess this information is stored as metadata inside the geom provider after you have initialized it, so on boot, GEOM searches for any providers attached, reads their metadata and loads them accordingly. What has me curious though is what happens if you, for example, swap a few disks around so your (for example) /dev/ad1 "this boot" isn't the same as the /dev/ad1 the previous time. Are GEOM labels unique? If they are, it is obviously possible for GEOM to transparently restore your configuration after you have changed your disk configuration. But if they aren't, it could be quite a pain in certain situations... - Dan Naumov 2009/6/10 cooper : > Hi, folks. > I wander where FreeBSD saves the information about the geom, for > instance which underlying devices are used to construct a multipath > label and what's the name of the label. In another word, how does the > system restore the multipathes which I configured before the last reboot > during the start up phase. > _______________________________________________ > freebsd-geom@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-geom > To unsubscribe, send any mail to "freebsd-geom-unsubscribe@freebsd.org" >