From owner-freebsd-current@FreeBSD.ORG Thu Apr 21 16:43:03 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A61BF106566B for ; Thu, 21 Apr 2011 16:43:03 +0000 (UTC) (envelope-from fjwcash@gmail.com) Received: from mail-yx0-f182.google.com (mail-yx0-f182.google.com [209.85.213.182]) by mx1.freebsd.org (Postfix) with ESMTP id 5D7C58FC08 for ; Thu, 21 Apr 2011 16:43:03 +0000 (UTC) Received: by yxl31 with SMTP id 31so675537yxl.13 for ; Thu, 21 Apr 2011 09:43:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=w30RNzTZ5YheJqKRPeBU1oFLD0eU6sY2yJ2SYPbTej4=; b=sRj5ZGf5czROYq9Iv8idGFphFlMkeElFUHFFeC9z4/jRK3l9uvkaDZ2f5L00gb9d2i ZCihZcpal4iyXapgw1K62rVmxOAiUP7YwYO1V8Ok2L9GSoDMCmqDWxTnXcg/9bxuI6X6 vHiQspop76v50HLeZoqaGRqj7V4B3xBj/FDj0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=TvyUriv3KCFUJ6NOpSzUXAk95UEUaF3MZkNA2tcz1bNkOzM+NKeSTATyUNjFsffXmL Cco9nY1tqGfI4Ki75iwJHKbtvU3Y0fw5KK5Lxn7AGFDk9Tzjy0XabOPNHUbPbZYw8K+w O3pjiWkVWz4Ibc0olbODsdD8zWX59H/WWeWns= MIME-Version: 1.0 Received: by 10.91.164.27 with SMTP id r27mr605466ago.204.1303404182386; Thu, 21 Apr 2011 09:43:02 -0700 (PDT) Received: by 10.90.53.5 with HTTP; Thu, 21 Apr 2011 09:43:02 -0700 (PDT) In-Reply-To: <20110421161814.GB2675@zod.isi.edu> References: <4DAEAE1B.70207@FreeBSD.org> <20110420203754.GM85668@acme.spoerlein.net> <4DAF46F8.9040004@FreeBSD.org> <4DAF5FBA.8080304@FreeBSD.org> <20110421161814.GB2675@zod.isi.edu> Date: Thu, 21 Apr 2011 09:43:02 -0700 Message-ID: From: Freddie Cash To: Ted Faber Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: FreeBSD-Current Subject: Re: Switch from legacy ata(4) to CAM-based ATA X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Apr 2011 16:43:03 -0000 On Thu, Apr 21, 2011 at 9:18 AM, Ted Faber wrote: > I seem to recall some flakiness with mounting labelled gmirrors. =C2=A0An= yone > know if that's been resolved? Purely anecdotal, but we've been using gmirror on top of glabel since FreeBSD 7.0. First on CompactFlash disks using CF-to-IDE adapters (ata(4)), then with CF-to-SATA adapters (ahci(4)), then with SSDs (ahci(4)). These systems have been upgraded through 7.1, 7.2, 7.3, 8.0, 8.1, 8.2, and now run 8-STABLE (from early April). No issues relating to the use of gmirror or glabel, even when replacing disks in the mirror. I've also run gmirror on glabelled USB sticks, although the quality of the sticks and the USB stack made that flaky in the extreme when combined with a very active ZFS pool (7.x days). We've since removed the CF disks and switched to using SSDs due to speed is= sues. --=20 Freddie Cash fjwcash@gmail.com