How to increase a KVM guest’s disk space

disk-space-utilizationkvm-virtualizationvirtualization

I setup an Ubuntu guest on a CentOS KVM host with initially 6GB of disk space. How do I go about increasing the Ubuntu guest's disk space from the command line?

EDIT #1: I'm using a disk image file (qemu).

Best Answer

  1. stop the VM
  2. run qemu-img resize vmdisk.img +10G to increase image size by 10Gb
  3. start the VM, resize the partitions and LVM structure within it normally
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