[linux-lvm] Problem with LVM2 and device-mapper

Jonathan E Brassow jbrassow at redhat.com
Tue Oct 18 21:14:44 UTC 2005

After a failed vgchange -ay, what does 'dmsetup ls' report?

I thought I've seen something like this in the past, but it always had 
to do with a partial load of a logical volume.


On Oct 18, 2005, at 2:50 PM, Patrick Lawrence (LVM List) wrote:

> Hello,
> I am using CentOS 4 and just did an upgrade from 4.1 to 4.2 on my 
> x86_64
> home server.  After a reboot, one of my vol groups stopped working.
> It's a volume group spread across 2 disks and when I try to activate
> that volgroup I get the following:
> <snip>
> [root at hetfield mapper]# vgchange -ay VolGroup02
>    device-mapper ioctl cmd 9 failed: Invalid argument
>    Couldn't load device 'VolGroup02-DVD'.
>    1 logical volume(s) in volume group "VolGroup02" now active
> <snip>
> and the relevant portion of the /var/log/messages has:
> <snip>
> Oct 17 08:45:07 hetfield kernel: device-mapper: dm-linear: Device 
> lookup
> failed
> Oct 17 08:45:07 hetfield kernel: device-mapper: error adding target to
> table
> <snip>
> My other two volgroups are working fine.  It's just this third one that
> has problems.
> I did quite a bit of googling yesterday, but I didn't come up with much
> although I have to confess that I know jack about the device mapper...
> Is there anything I can provide to diagnose the problem further?  Since
> CentOS tracks RHEL4 very closely, I suspect this affects RHEL4 as well.
> Regards,
> Pat
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