From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.11.6/8.11.6) with ESMTP id iBV4NXr05231 for ; Thu, 30 Dec 2004 23:23:33 -0500 Received: from rproxy.gmail.com (rproxy.gmail.com [64.233.170.197]) by mx3.redhat.com (8.12.11/8.12.11) with ESMTP id iBV4NNV1017919 for ; Thu, 30 Dec 2004 23:23:28 -0500 Received: by rproxy.gmail.com with SMTP id 1so321877rny for ; Thu, 30 Dec 2004 20:23:22 -0800 (PST) Message-ID: Date: Thu, 30 Dec 2004 23:23:22 -0500 From: Sasha Z Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [linux-lvm] Rebuilding physical volume metadata Reply-To: Sasha Z , LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii" To: linux-lvm@redhat.com I have a severe problem. I had a healthly LVM four days ago, but came home to an LVM that no longer had an PV's, and a computer without an PV's listed. So I had to recreate the physical volumes, and that went ok. When I recreated the volume group, I found that it thought all the PV's were completely empty. Of course this cannot be true. Nothing I did took any time at all, zeroing 700GB's of disk would take a very very long time. I didn't delete any partitions, and so I figure the "maps" or metadata stored on each drive has been deleted somehow. Is there a way to regenerate these maps using raw sector data? I know my data is there, just getting LVM2 to allow access to it is the problem. - Sasha Z.