From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx14.extmail.prod.ext.phx2.redhat.com [10.5.110.19]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r2RIpNcx008431 for ; Wed, 27 Mar 2013 14:51:23 -0400 Received: from mail.bmsi.com (mail.bmsi.com [68.106.146.44]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r2RIpMNK027721 for ; Wed, 27 Mar 2013 14:51:22 -0400 Received: from sdg.bmsi.com (sdg.bmsi.com [192.168.9.34] (may be forged)) (authenticated bits=0) by mail.bmsi.com (8.14.3/8.14.3) with ESMTP id r2RIpKL0014489 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Wed, 27 Mar 2013 14:51:21 -0400 Message-ID: <51533FA8.1060500@bmsi.com> Date: Wed, 27 Mar 2013 14:51:20 -0400 From: Stuart D Gathman MIME-Version: 1.0 References: <533CFD97-2715-4B1C-A8C5-02161911747D@googlemail.com> <51509ECB.4050901@bmsi.com> <244E0086-C561-4034-BF26-31DFC419B72F@googlemail.com> <5150B555.4010207@bmsi.com> <0FEAF33E-7395-4820-9732-AFE70D3B5877@googlemail.com> <5150C1F8.8090107@bmsi.com> <5151A59B.5010909@bmsi.com> In-Reply-To: Content-Type: multipart/alternative; boundary="------------030201020005080905010903" Subject: Re: [linux-lvm] vg disappeared after replacing disc in raid10 Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: To: linux-lvm@redhat.com This is a multi-part message in MIME format. --------------030201020005080905010903 Content-Type: text/plain; charset="iso-8859-1"; format="flowed" Content-Transfer-Encoding: quoted-printable On 03/26/2013 02:13 PM, Bj=EF=BF=BDrn Nadrowski expounded in part: > > So, should I rewrite the beginning of the device with the dd command? > > What then? > > Thanks a lot for all your help! > You could try the dd, if it has a good chance of restoring the device to=20 before the pvcreate. I don't know offhand how much of a PV pvcreate=20 overwrites. Hopefully, an LVM guru can chime in. Before doing pvcreate,=20 things like vg_scan -v should give a clue as to whether knoppix is even=20 looking at md127. You might need to tweak the device filter in lvm.conf=20 for knoppix. --------------030201020005080905010903 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit

On 03/26/2013 02:13 PM, Björn Nadrowski expounded in part:

So, should I rewrite the beginning of the device with the dd command?

What then?

Thanks a lot for all your help!

You could try the dd, if it has a good chance of restoring the device to before the pvcreate. I don't know offhand how much of a PV pvcreate overwrites. Hopefully, an LVM guru can chime in. Before doing pvcreate, things like vg_scan -v should give a clue as to whether knoppix is even looking at md127. You might need to tweak the device filter in lvm.conf for knoppix.
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