From owner-freebsd-fs@FreeBSD.ORG  Thu May 31 23:26:10 2012
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 7A8B2106566C
	for <freebsd-fs@freebsd.org>; Thu, 31 May 2012 23:26:10 +0000 (UTC)
	(envelope-from randy@psg.com)
Received: from ran.psg.com (ran.psg.com [IPv6:2001:418:1::36])
	by mx1.freebsd.org (Postfix) with ESMTP id 5CD168FC0C
	for <freebsd-fs@freebsd.org>; Thu, 31 May 2012 23:26:10 +0000 (UTC)
Received: from localhost ([127.0.0.1] helo=rair.psg.com.psg.com)
	by ran.psg.com with esmtp (Exim 4.77 (FreeBSD))
	(envelope-from <randy@psg.com>) id 1SaEkr-000J1B-3K
	for freebsd-fs@freebsd.org; Thu, 31 May 2012 23:26:09 +0000
Date: Fri, 01 Jun 2012 08:26:07 +0900
Message-ID: <m2pq9kq6eo.wl%randy@psg.com>
From: Randy Bush <randy@psg.com>
To: FreeBSD FS <freebsd-fs@freebsd.org>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/22.3 Mule/5.0 (SAKAKI)
MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka")
Content-Type: text/plain; charset=US-ASCII
Subject: hptrr disk labeling
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 31 May 2012 23:26:10 -0000

i have an hptrr controller with 12-16 2tb satas on it.  a picture
before i started cleaning up some disk failures.

        NAME                STATE     READ WRITE CKSUM
        tank                ONLINE       0     0     0
          mirror            ONLINE       0     0     0
            label/m00-d01   ONLINE       0     0     0
            label/m00-d00   ONLINE       0     0     0
          mirror            ONLINE       0     0     0
            label/m01-d00   ONLINE       0     0     0
            label/m01-d01   ONLINE       0     0     0
          mirror            ONLINE       0     0     0
            label/m02-d00   ONLINE       0     0     0
            label/m02-d01   ONLINE       0     0     0
          mirror            ONLINE       0     0     0
            label/m03-d00   ONLINE       0     0     0
            label/m03-d01   ONLINE       0     0     0
          mirror            ONLINE       0     0     0
            label/m04-d00   ONLINE       0     0     0
            label/m04-d01   ONLINE       0     0     0
          mirror            ONLINE       0     0     0
            label/m05-d00   ONLINE       0     0     0
            label/m05-d01   ONLINE       0     0     0

the reason i used glabels was because when the system boots or the
controller rescans, it assigns da0 to the first drive it finds alive on
the controller, da1 to the second, etc.

this means that drive addition or removal changes the daX numbering.

so the labels are so that zfs can find its ass when assembling the
array.

the kernel opt
   options        ATA_STATIC_ID   # Static device numbering
is for ata, not sata, yes?

is there a nice way out of this?

randy