docs/136712: draft new section on gmirror per partition

[Anton Shterenlikht]

>Number:         136712
>Category:       docs
>Synopsis:       draft new section on gmirror per partition
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Mon Jul 13 12:10:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Anton Shterenlikht
>Release:        FreeBSD 8.0-BETA1 ia64
>Organization:
University of Bristol, UK
>Environment:
System: FreeBSD 8.0-BETA1 #0: Sun Jul 12 15:15:30 BST 2009     mexas at tzav.vms.org:/usr/obj/usr/src/sys/TZAV  ia64

	
>Description:
	section 19.4 RAID1 - Mirroring is incorrect for ia64 architecture,
	or more generally, for GPT partitioning scheme. One mirroring
	individual partitions would work for GPT, mirroring a whole disk
	wouldn't. So I added a section "Mirroring individual partitions",
	and a subsection under Troubleshooting.
>How-To-Repeat:
	
>Fix:
	section 19.4 with the proposed changes is at
	http://eis.bris.ac.uk/~mexas/geom-mirror.html

>Release-Note:
>Audit-Trail:
>Unformatted: