From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Tue, 15 Nov 2011 11:07:12 +0000
From: "Bryn M. Reeves" <bmr@redhat.com>
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Subject: Re: [linux-lvm] Unable to remove LVs
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To: LVM general discussion and development <linux-lvm@redhat.com>
Cc: Jan Bakuwel <jan.bakuwel@omiha.com>

On 11/15/2011 06:44 AM, Jan Bakuwel wrote:
> Hi Bryn,
>
>> The partition map has a 'p' separator - d-pdc.oa.cp1 - the correct
>> command is:
>>
>> kpartx -d /dev/mapper/d-pdc.oa.c
>
> # kpartx -d /dev/mapper/d-pdc.oa.c

It's possible kpartx is getting confused and is refusing to remove the 
maps if they still exist after running this command.

You can try to remove the device manually with dmsetup:

dmsetup remove d-pdc.oa.cp1

If this succeeds then you can proceed to deactivate the lv/vg. If it 
fails then there is something still using the device and you'll need to 
figure out what it is to get rid of the devices.

Regards,
Bryn.