On Tue, Oct 30, 2012 at 8:56 AM, Rudi Ahlers <r...@softdux.com> wrote: > > Can anyone please tell me, or direct me to a website with > instructions, how to resize a Windows based KVM guest, when the > Windows KVM guest is setup on LVM? > > The host server runs on CentOS 6, with no GUI installed. > > The following website have a good explanation of the steps to take, > but I need a GUI installed which I don't: > http://www.linux-kvm.com/content/how-resize-your-kvm-virtual-disk
Can you clarify what "Windows KVM guest is setup on LVM" means? Does it simply mean that the virtual disk is on an LV? As the link above shows, it's a two-step procedure. You first have to increase the size of the kvm disk on the host and then increase the size of the disk and the filesystem on the guest from within the guest. For the first step, assuming that you have the space to do so, the only thing that you need to do on the host is "qemu-img resize ...". For the second step, I don't understand why the disk isn't resized within the Windows guest, whether with the "Disk Management" GUI tool or the "diskpart" CLI tool (for later versions of Windows there's a limitation that the space into which a partition has to be extended has to be contiguous to the partition). If you really want to go down the same route as the link, you have to add the disk to a Linux VM and resize it from within that VM. At the CLI you can use fdisk or parted. With fdisk, you have to delete and recreate the partition. With parted, you can resize it. I've done this with extX but never with ntfs so, if I were you, I'd dupe the virtual disk and run a test to ensure that it works.
