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From: Alexander Motin <mav@FreeBSD.org>
Subject: Re: kern/169539: [geom] [patch] fix ability to run gmirror on MSI
 MegaRaid (/dev/ar* vs /dev/gm*)
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The following reply was made to PR kern/169539; it has been noted by GNATS.

From: Alexander Motin <mav@FreeBSD.org>
To: bug-followup@FreeBSD.org, alter@alter.org.ua
Cc:  
Subject: Re: kern/169539: [geom] [patch] fix ability to run gmirror on MSI
 MegaRaid (/dev/ar* vs /dev/gm*)
Date: Tue, 15 Jan 2013 03:40:23 +0200

 I don't think that hacking gmirror to move its metadata is a right
 approach to the problem. It will make metadata detection complicated and
 depending on some external knowledge. Why just not partition the disks
 and not use gmirror on top of partition table? If partition will not use
 the last sector of the disk, controller should be happy and gmirror
 won't need any hacks.
 
 -- 
 Alexander Motin