From owner-freebsd-questions@FreeBSD.ORG Sat Aug 27 04:05:00 2011 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 13B93106564A for ; Sat, 27 Aug 2011 04:05:00 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (wonkity.com [67.158.26.137]) by mx1.freebsd.org (Postfix) with ESMTP id C35968FC0A for ; Sat, 27 Aug 2011 04:04:59 +0000 (UTC) Received: from wonkity.com (localhost [127.0.0.1]) by wonkity.com (8.14.5/8.14.5) with ESMTP id p7R44wlZ002752; Fri, 26 Aug 2011 22:04:58 -0600 (MDT) (envelope-from wblock@wonkity.com) Received: from localhost (wblock@localhost) by wonkity.com (8.14.5/8.14.5/Submit) with ESMTP id p7R44wj3002749; Fri, 26 Aug 2011 22:04:58 -0600 (MDT) (envelope-from wblock@wonkity.com) Date: Fri, 26 Aug 2011 22:04:58 -0600 (MDT) From: Warren Block To: Adam Vande More In-Reply-To: Message-ID: References: User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="-902635197-1888676161-1314417898=:2601" X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (wonkity.com [127.0.0.1]); Fri, 26 Aug 2011 22:04:59 -0600 (MDT) Cc: questions@freebsd.org Subject: Re: glabel, gmirror, and gpart X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Aug 2011 04:05:00 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. ---902635197-1888676161-1314417898=:2601 Content-Type: TEXT/PLAIN; format=flowed; charset=ISO-8859-15 Content-Transfer-Encoding: 8BIT On Fri, 26 Aug 2011, Adam Vande More wrote: > On Fri, Aug 26, 2011 at 8:09 PM, Warren Block wrote: > Question 2 is maybe simpler.  On boot, it shows this: >  gptboot: invalid backup GPT header > > I can speculate on what causes that (whether the various g-things use the absolute last block of the device, or the last block of their area and provide their total minus > one block; or it could be that gptboot is seeing the disk rather than the gmirror device).  Can it be fixed? > > > This is a long standing issue that still isn't fixed to the best of my knowledge.  The problem is with gmirror and GPT.  > > http://translate.google.com/translate?js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&sl=auto&tl=en&u=http%3A%2F%2Fbu7cher.blogspot.com%2F2011%2F03%2Ffreebsd-gmirror-gpt-ufs.html&act=url > > is the best I can do. Thanks! So it's cosmetic, but not really the kind of message that instills confidence. gptboot needs to be able to tell if it's reading from a gmirror. Or gmirror should provide one block less than it does, so it doesn't overwrite the GPT backup. ---902635197-1888676161-1314417898=:2601--