Possible to use LVM partitions inside a vmbuilder created KVM virtual machine?

Question

I have an Ubuntu 9.10 host system with LVM partitions running KVM. I've been creating VMs using vmbuilder using LVM partitions for each VM instead of files for the VMs.

When I configure a VM using vmbuilder --part, the partitions in the file I'm using are created as regular partitions (sda1, sda2, etc.).

What I'd like to do is use LVM inside of the VM in case I need to resize the partitions at some point. But I don't see any options for doing that using the vmbuilder tool. It seems like this might be a common request to avoid using kpartx, etc.

Is there something I'm missing, or is this just not possible with vmbuilder?

Do you mean you want vmbuilder create an logical volume, or do you want vmbuilder to use a logical volume you have created? — txwikinger, Jul 08 '10 at 21:08

score 2 · Answer 1 · edited Dec 18 '12 at 08:18

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If the partition is in qcow format you can use like

qemu-img resize partition.qcow2 +5GB

and then

kpartx

in the guest.

edited Dec 18 '12 at 08:18

user9517

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answered Dec 18 '12 at 08:06

Roland Kákonyi

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score 1 · Answer 2 · answered Sep 23 '11 at 14:23

1

VMBuilder does not support that (and I don't think it's actually possible, without running the VM).

I'd use virt-install to define the VM and then run standard Ubuntu installer (possibly with preseed data).

answered Sep 23 '11 at 14:23

sendmoreinfo

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Possible to use LVM partitions inside a vmbuilder created KVM virtual machine?

2 Answers2