libvirt users - Nov 2015 - Re: How to fix an incorrect storage pool?

I've created my storage pool incorrectly. I'm using LVM and I have a
volume
group called vms-lvm.
When I look at it in virt-manager I see that the volumes it contains are
home, root and swap, so when I created the storage group in virt-manager I
must have specified something incorrectly.

Unfortunately I can't find a way to correct this. If I try to destroy
(stop) the storage group I get an error:

# virsh pool-destroy vms-lvm
error: Failed to destroy pool vms-lvm
error: internal error: Child process (/usr/sbin/vgchange -aln centos_hyv2)
unexpected exit status 5:   Logical volume centos_hyv2/swap in use.
  Can't deactivate volume group "centos_hyv2" with 3 open logical
volume(s)

Same if I try to undefine it:
# virsh pool-undefine vms-lvm
error: Failed to undefine pool vms-lvm
error: Requested operation is not valid: storage pool 'vms-lvm' is still
active


Can anyone please advise how I get out of this mess? There must surely be a
way of undefining this?

It says that  Logical volume centos_hyv2/swap in use. Maybe centos_hyv2/swap is
mounted. So I think you should umount or
swapoff centos_hyv2/swap first, make sure it is not used by other process. Then
try pool-destroy.

----- Original Message -----
From: "Phill Edwards" <philledwards@gmail.com>
To: libvirt-users@redhat.com
Sent: Wednesday, November 11, 2015 8:59:22 PM
Subject: [libvirt-users] How to fix an incorrect storage pool?

I've created my storage pool incorrectly. I'm using LVM and I have a
volume group called vms-lvm.
When I look at it in virt-manager I see that the volumes it contains are home,
root and swap, so when I created the storage group in virt-manager I must have
specified something incorrectly.

Unfortunately I can't find a way to correct this. If I try to destroy (stop)
the storage group I get an error:

# virsh pool-destroy vms-lvm 
error: Failed to destroy pool vms-lvm 
error: internal error: Child process (/usr/sbin/vgchange -aln centos_hyv2)
unexpected exit status 5: Logical volume centos_hyv2/swap in use.
Can't deactivate volume group "centos_hyv2" with 3 open logical
volume(s)

Same if I try to undefine it: 
# virsh pool-undefine vms-lvm 
error: Failed to undefine pool vms-lvm 
error: Requested operation is not valid: storage pool 'vms-lvm' is still
active


Can anyone please advise how I get out of this mess? There must surely be a way
of undefining this?

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On 12 Nov 2015 13:27, "Han Han" <hhan@redhat.com>
wrote:
>
> It says that  Logical volume centos_hyv2/swap in use. Maybe
centos_hyv2/swap is mounted. So I think you should umount
or
> swapoff centos_hyv2/swap first, make sure it is not used by other
process. Then try pool-destroy.
>
Yes, that's the system swap. That and home and root are all in the storage
pool and are, of course, all in use and I can't run the machine without
them being in use. Perhaps if I rm'd the storage pool definition file? Do
you think that  would work or is it too dangerous?