From mwlucas@bewilderbeast.blackhelicopters.org  Mon Nov 21 16:20:06 2011
Return-Path: <mwlucas@bewilderbeast.blackhelicopters.org>
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 5D5E2106564A
	for <FreeBSD-gnats-submit@freebsd.org>; Mon, 21 Nov 2011 16:20:06 +0000 (UTC)
	(envelope-from mwlucas@bewilderbeast.blackhelicopters.org)
Received: from bewilderbeast.blackhelicopters.org (mwlucas-2-pt.tunnel.tserv9.chi1.ipv6.he.net [IPv6:2001:470:1f10:b9c::2])
	by mx1.freebsd.org (Postfix) with ESMTP id 19B148FC1D
	for <FreeBSD-gnats-submit@freebsd.org>; Mon, 21 Nov 2011 16:20:05 +0000 (UTC)
Received: from bewilderbeast.blackhelicopters.org (localhost [127.0.0.1])
	by bewilderbeast.blackhelicopters.org (8.14.4/8.14.5) with ESMTP id pALGK38P090926
	for <FreeBSD-gnats-submit@freebsd.org>; Mon, 21 Nov 2011 11:20:04 -0500 (EST)
	(envelope-from mwlucas@bewilderbeast.blackhelicopters.org)
Received: (from mwlucas@localhost)
	by bewilderbeast.blackhelicopters.org (8.14.4/8.14.5/Submit) id pALGK3YQ090925;
	Mon, 21 Nov 2011 11:20:03 -0500 (EST)
	(envelope-from mwlucas)
Message-Id: <201111211620.pALGK3YQ090925@bewilderbeast.blackhelicopters.org>
Date: Mon, 21 Nov 2011 11:20:03 -0500 (EST)
From: Michael W Lucas <mwlucas@blackhelicopters.org>
Reply-To: Michael W Lucas <mwlucas@blackhelicopters.org>
To: FreeBSD-gnats-submit@freebsd.org
Cc:
Subject: gmirror handbook instructions ate my disk
X-Send-Pr-Version: 3.113
X-GNATS-Notify:

>Number:         162723
>Category:       docs
>Synopsis:       gmirror handbook instructions ate my disk
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    manolis
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          doc-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 21 16:30:08 UTC 2011
>Closed-Date:    Mon Nov 21 18:23:41 UTC 2011
>Last-Modified:  Mon Nov 21 18:23:41 UTC 2011
>Originator:     Michael W Lucas
>Release:        FreeBSD 9.0-BETA2 amd64
>Organization:
none
>Environment:
System: FreeBSD bewilderbeast.blackhelicopters.org 9.0-BETA2 FreeBSD 9.0-BETA2 #12: Wed Sep 7 03:29:55 EDT 2011 mwlucas@bewilderbeast.blackhelicopters.org:/usr/obj/usr/src/sys/GENERIC amd64

Installed 9.0-RC1/i386 from CD, built & installed RC2.

>Description:

Tried to mirror my root drive as per 

http://www.freebsd.org/doc/handbook/geom-mirror.html

System did not recover from reboot, failing with:

GEOM: mirror/gm0: corrupt or invalid GPT detected.
GEOM: mirror/gm0: GPT rejected -- may not be recoverable

Further research shows that this is expected, and is a result of our
new GPT overlords

>How-To-Repeat:

>Fix:

Could we get a warning at the top of the page that says "For FreeBSD 8
and earlier. Do not use on FreeBSD 9." ?

We need updated docs, yes, but a warning in the directions would
reduce user annoyance.
>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-doc->manolis 
Responsible-Changed-By: manolis 
Responsible-Changed-When: Mon Nov 21 17:38:28 UTC 2011 
Responsible-Changed-Why:  
Over to me 

http://www.freebsd.org/cgi/query-pr.cgi?pr=162723 

From: Manolis Kiagias <sonic2000gr@gmail.com>
To: Michael W Lucas <mwlucas@blackhelicopters.org>
Cc: bug-followup@FreeBSD.org
Subject: Re: docs/162723: gmirror handbook instructions ate my disk
Date: Mon, 21 Nov 2011 19:37:42 +0200

 I just tried the procedure in VirtualBox.
 In my case, it was the backup GPT that got corrupted - the system was 
 still bootable but of course no gm* devices were created, had to use the 
 standard ad* ones.
 You are right we should warn about this, I will  add this info to the 
 "warning" already present in the section.

From: dfilter@FreeBSD.ORG (dfilter service)
To: bug-followup@FreeBSD.org
Cc:  
Subject: Re: docs/162723: commit references a PR
Date: Mon, 21 Nov 2011 18:11:33 +0000 (UTC)

 manolis     2011-11-21 18:11:25 UTC
 
   FreeBSD doc repository
 
   Modified files:
     en_US.ISO8859-1/books/handbook/geom chapter.sgml 
   Log:
   Add a warning on using GEOM mirroring on GPT partitioned disks, the
   default scheme used on FreeBSD 9.X
   
   PR:             docs/162723
   Submitted by:   Michael W. Lucas <mwlucas at blackhelicopters dot org>
   
   Revision  Changes    Path
   1.51      +6 -1      doc/en_US.ISO8859-1/books/handbook/geom/chapter.sgml
 _______________________________________________
 cvs-all@freebsd.org mailing list
 http://lists.freebsd.org/mailman/listinfo/cvs-all
 To unsubscribe, send any mail to "cvs-all-unsubscribe@freebsd.org"
 
State-Changed-From-To: open->closed 
State-Changed-By: manolis 
State-Changed-When: Mon Nov 21 18:23:18 UTC 2011 
State-Changed-Why:  
Changes were committed, thanks! 

http://www.freebsd.org/cgi/query-pr.cgi?pr=162723 
>Unformatted:
