This is one of those posts that’s just a placeholder for me to remember how to do something, if it helped you too, that’s great.
- Assign a new disk to the VM in virt-manager, or using virsh, as you prefer - choose VirtIO for the disk type if you have no other preference. Might also be a good idea to take a snapshot at this point.
- Enter the VM - handy things to try at this point would be
pvdisplayto list the physical volume(s) and show the volume group name(s), then you could tryvgdisplay trusty-vgfor example - Run
sudo pvcreate /dev/vdb(or whatever device name is used by the new disk you added). - Add the physical volume to the volume group:
sudo vgextend trusty-vg /dev/vdb - Allocate the physical volume to a logical volume:
sudo lvextend -l +100%FREE /dev/trusty-vg/root - Resize the file system on the logical volume:
sudo resize2fs /dev/trusty-vg/root
Yeah it’s simple, but I had it written down in a notebook and forgot which one >.<