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Date: Tue, 09 Jun 2009 12:25:10 +0200
From: Stefan Radovanovici <stefan@nektulos.de>
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Subject: Re: [linux-lvm] pvremove won't work
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On 6/9/2009 11:46 AM, Bryn M. Reeves wrote:

> Use dmsetup:
> 
> $ dmsetup info --maj 252 --min 1
> 
> (the output above shows dm is using 252 as its major number for this
> device on your system).
> 
> At a guess it looks like you somehow removed the PV from the VG while a
> logical volume was mapped on it.

First of all, thanks for the info. I am not a LVM expert and this is useful information. dmsetup shows this:

root@neriak:/sys/block/sda/sda4/holders/dm-1# dmsetup info --maj 252 --min 1
Name:              storage-pvmove0
State:             ACTIVE
Read Ahead:        256
Tables present:    LIVE
Open count:        0
Event number:      1
Major, minor:      252, 1
Number of targets: 1
UUID: LVM-SS2wO5K12BwSo1iceXVSiTaYPQzdgEuUoOPgGYKKRLO109x4837eAHZeiSmzzEqW

I think I somehow messed up while trying to get rid of /dev/sda4. I used a GUI for this not the CLI, first I tried to move the extents to other PVs (which I think is that pvmove does) and then to actually remove it from the group (which is probably what vgreduce does). If I am not mistaken, the first operation gave an error even though it appeared to have worked somehow at the time.

Any way I can fix this ?

Thanks,
Stefan