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From: Zdenek Kabelac <zkabelac@redhat.com>
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Date: Thu, 26 Nov 2015 18:14:08 +0100
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Subject: Re: [linux-lvm] thin_check called with wrong path during "vgchange
	-ay"
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To: LVM general discussion and development <linux-lvm@redhat.com>

Dne 26.11.2015 v 17:35 Chris Friesen napsal(a):
> Hi,
>
> I'm hoping this is a known issue.  I'm trying to use thin provisioning with
> openstack cinder.
>
> If I run "vgchange -ay cinder-volumes" manually, it complains:
>
> controller-0:/home/wrsroot# vgchange -ay cinder-volumes
>    Check of thin pool cinder-volumes/cinder-volumes-pool failed (status:1).
> Manual repair required (thin_dump --repair
> /dev/mapper/cinder-volumes-cinder-volumes-pool_tmeta)!
>
> If I run thin_check on /dev/mapper/cinder-volumes-cinder-volumes-pool_tmeta it
> complains that the file doesn't exist:
>
>
> controller-0:/home/wrsroot# thin_check
> /dev/mapper/cinder-volumes-cinder-volumes-pool_tmeta
> Couldn't stat dev path
>
>
> The actual file name is
> /dev/mapper/cinder--volumes-cinder--volumes--pool_tmeta (note the
> double-hyphens) and if I run thin_check on that then it seems happy:
>
> controller-0:/home/wrsroot# thin_check
> /dev/mapper/cinder--volumes-cinder--volumes--pool_tmeta
> examining superblock
> examining devices tree
> examining mapping tree
> checking space map counts
>
>
> Does anyone know why thin_check is being called with the wrong filename?
>
> For what it's worth, here's my lvm version:
> controller-0:/home/wrsroot# lvm version
>    LVM version:     2.02.95(2) (2012-03-06)

This was early version with thin_check call support - and had a bug
in path building fixed in 2.02.96.

Anyway please switch to some version from this year - ideally upstream...

Zdenek