From owner-freebsd-geom@FreeBSD.ORG Thu Mar 12 08:13:19 2009 Return-Path: Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 267D6106566C for ; Thu, 12 Mar 2009 08:13:19 +0000 (UTC) (envelope-from lavagecko@gmail.com) Received: from wf-out-1314.google.com (wf-out-1314.google.com [209.85.200.171]) by mx1.freebsd.org (Postfix) with ESMTP id EC7B48FC21 for ; Thu, 12 Mar 2009 08:13:18 +0000 (UTC) (envelope-from lavagecko@gmail.com) Received: by wf-out-1314.google.com with SMTP id 27so458450wfd.7 for ; Thu, 12 Mar 2009 01:13:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:from:to :content-type:content-transfer-encoding:mime-version:subject:date :x-mailer; bh=s2kepCWsqiUDy2KUuFfMKJ++xjrX6yLOWMaJ7FNMH4k=; b=qAJYMkR6Jk18r2rucBVhPMOxx5pWGVVUq1i9z7x6PU16fzJQXHas5B6LVvvltsdrWH CXEfpSP5pEuYZS/o8obrmk7cX4F7nkrOVbRllNrjgKoeMOKo2t51L3bq2apvJruXcHIc kUCQdk7VtZ5iYC/+Ofe8Q4HzqNx846ClChLis= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:from:to:content-type:content-transfer-encoding :mime-version:subject:date:x-mailer; b=Jt5tyrQ7mvQC859qjjuBbW7d/ERCrYXp2uugYq9IyaNY1MpbYnQM35sGVUnWiNTLMn SCXqor3w2COmShqs7/CaOI1KNexMDqb83slG158XUjHO0XguEeELlNGS9v9VOrwOFzgZ CMB8ksU/NSv4onIwjfRrRSL3QrDWP8CpdBq64= Received: by 10.143.165.19 with SMTP id s19mr2672758wfo.236.1236844323253; Thu, 12 Mar 2009 00:52:03 -0700 (PDT) Received: from ?192.168.1.103? ([216.155.218.13]) by mx.google.com with ESMTPS id 29sm1035574wfg.53.2009.03.12.00.52.02 (version=SSLv3 cipher=RC4-MD5); Thu, 12 Mar 2009 00:52:02 -0700 (PDT) Sender: Clayton Message-Id: <6D5ADA2B-9471-4404-892D-1DFAB9011C09@bitheaven.net> From: Clayton Fuller To: freebsd-geom@freebsd.org Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v930.3) Date: Thu, 12 Mar 2009 01:52:01 -0600 X-Mailer: Apple Mail (2.930.3) Subject: Safe to ignore GEOM warnings on ZFS raidz? X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Mar 2009 08:13:19 -0000 I am setting up a new home file server on CURRENT-8.0 using 4 1.5 TB SATA drives in a ZFS raidz pool I created the pool without first partitioning or labeling the drives. during the boot sequence, I get the following warnings for each of the drives: GEOM: ad6: corrupt or invalid GPT detected. GEOM: ad6: GPT rejected -- may not be recoverable. here's the drive info (I have 3 identical drives at ad8, ad12 and ad14) ad6: 1430799MB at ata3-master SATA300 The storage pool seems to work fine, as tested by transferring nearly a terabyte of data, simulating a failed drive, resilvering, etc and all seems to be working well. invoking the zpool scrub command will bring up the corrupt GPT errors again, but all other read/write operations on my storage pool seem to be fine. Is GEOM in any way necessary for managing this ZFS pool? Can I safely ignore the warnings? Is there a better way to configure this to keep GEOM happy? I'd be happy to supply more specifics if germane, but thought I'd try to keep it simple. Any suggestions would be greatly appreciated. -Clayton