From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (mx1.redhat.com [172.16.48.31]) by int-mx1.corp.redhat.com (8.11.6/8.11.6) with ESMTP id k25Hm2101723 for ; Sun, 5 Mar 2006 12:48:02 -0500 Received: from mail.volved.com (c-71-192-139-98.hsd1.ma.comcast.net [71.192.139.98]) by mx1.redhat.com (8.12.11/8.12.11) with ESMTP id k25Hm1AI008389 for ; Sun, 5 Mar 2006 12:48:01 -0500 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.volved.com (Postfix) with ESMTP id CC26B1B8D for ; Sun, 5 Mar 2006 12:47:55 -0500 (EST) Received: from mail.volved.com ([127.0.0.1]) by localhost (monolith [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 26721-11 for ; Sun, 5 Mar 2006 12:47:47 -0500 (EST) Received: from [192.168.0.210] (unknown [192.168.0.210]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.volved.com (Postfix) with ESMTP id 1E1031B8C for ; Sun, 5 Mar 2006 12:47:47 -0500 (EST) Message-ID: <440B244B.6000606@volved.com> Date: Sun, 05 Mar 2006 12:47:55 -0500 From: Barnaby Claydon MIME-Version: 1.0 Subject: Re: [linux-lvm] New disk; "Couldn't find uuid" after successful pvcreate&vgextend References: <440AECFD.5070305@volved.com> In-Reply-To: Content-Transfer-Encoding: 7bit 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: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-lvm@redhat.com # pvcreate -v /dev/hdc Set up physical volume for "/dev/hdc" with 390721584 available sectors Zeroing start of device /dev/hdc Physical volume "/dev/hdc" successfully created # pvdisplay -v /dev/hdc Using physical volume(s) on command line --- NEW Physical volume --- PV Name /dev/hdc VG Name PV Size 186.31 GB Allocatable NO PE Size (KByte) 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID xacykK-MXPT-2yO0-qf2R-TBTU-VJb5-vVYw4Q I haven't tried vgextend again since running badblocks - it looks like the drive is fine though: # badblocks -svw /dev/hdc Checking for bad blocks in read-write mode From block 0 to 195360984 Testing with pattern 0xaa: done 984 Reading and comparing: done 984 Testing with pattern 0x55: done 984 Reading and comparing: done 984 Testing with pattern 0xff: done 984 Reading and comparing: done 984 Testing with pattern 0x00: done 984 Reading and comparing: done 984 Pass completed, 0 bad blocks found. James Hammett wrote: > What do you get when you try pvdisplay? > > James > >> Hi all, >> >> I've been successfully running LVM2 (2.01.04) on Debian Sarge >> (2.6.8-2-686) for months. >> >> As I've done many times before, I added a new disk yesterday. I >> successfully ran the following, both without error: >> >> pvcreate -v /dev/hdc >> and >> vgextend -v mono_media /dev/hdc >> >> As standard practice to make sure everything was ok, I then ran: >> >> vgscan -v >> >> At this point I got several references to "Couldn't find uuid..." >> repeated with the same uuid several times. At this point it seemed >> logical to back-out my changes, so I tried to run the following: >> >> vgreduce -v mono_media /dev/hdc >> >> Unfortunately this gave the same "Couldn't find uuid..." errors as >> 'vgscan'. As it seemed somewhat logical, I tried running the same >> 'pvcreate' command, again without error: >> >> pvcreate -v /dev/hdc >> >> After 'pvcreate' had finished, I was THEN able to run 'vgreduce' and >> restore my 'mono_media' VG to working order. >> >> At this point I was a bit baffled, running 'lvmdiskscan' after the >> initial 'pvcreate' shows the disk as present, but if I reboot after >> just that first 'pvcreate' step and run 'lvmdisksacn' after the >> reboot, /dev/hdc isn't shown. >> >> To rule-out a hardware problem I successfully ran 'mkfs.ext3 >> /dev/hdc' and was able to mount and navigate the volume without >> errors. Last night I also left 'badblocks -svw /dev/hdc' running >> which is almost complete and hasn't found any errors yet. >> >> I will reply with full command output once 'badblocks' has finished, >> but I hope this brief synopsis makes sense. >> >> Thanks everyone! >> -Barnaby >> >> _______________________________________________ >> linux-lvm mailing list >> linux-lvm@redhat.com >> https://www.redhat.com/mailman/listinfo/linux-lvm >> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ > >