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Date: Thu, 4 Oct 2001 12:53:06 +0200
From: Wichert Akkerman <wichert@cistron.nl>
To: linux-lvm@sistina.com, alan@lxorguk.ukuu.org.uk,
        linux-kernel@vger.kernel.org
Subject: Re: [linux-lvm] Re: partition table read incorrectly
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Previously Andreas Dilger wrote:
> If you already have data on the PV in
> question, you can "dd if=/dev/zero of=/dev/sdb bs=1 seek=510 count=2"
> to remove only the partition signature.

That helped and the kernel no longer sees that partition anymore.
However LVM still doesn't work:

cloud:/dev/discs/disc1# vgscan
vgscan -- reading all physical volumes (this may take a while...)
vgscan -- found active volume group "vg_user"
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume group

cloud:/dev/discs/disc1# vgchange -a y
vgchange -- ERROR: VGDA in kernel and lvmtab are NOT consistent; please run vgscan

I did a bit of looking around and it seems the confusement is in the
kernel: when lvm_check_kernel_lvmtab_consistency() compares the kernel
and the lvmtab entries the list from the kernel mentions the vg_user
volume group twice, while the lvmtab only mentions it once.

Wichert.

-- 
  _________________________________________________________________
 /       Nothing is fool-proof to a sufficiently talented fool     \
| wichert@wiggy.net                   http://www.liacs.nl/~wichert/ |
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