The actual used space is 380 MB as du reports. qemu-img info seems to give the right info, but qemu-img check returns a lot of errors, and trying to fix them and then resize, gives an unusable image. As my partition layout included a swap partition, I couldn't use the growpart command to resize it. On OS X (High Sierra) I tried to resize image with qemu-img (5.1.0) without luck. I resized the image that uses the base image as backing file using the same command as in 1. In this guide you'll learn how to resize the virtual disks that store your VM data, letting you increase capacity before you run out of space. 1 Answer Sorted by: 0 I finally could solve it as follow: I resized the base image using qemu-img resize vmdisk.qcow 30G. Shut down the windows machine in KVM and locate the Windows 10 disk. You can find the KVM qemu disk image either using GUI or the CLI. I did an screenshot of virt-manager and terminal oposed opinions on "size" of the disk image. Cloud How to Increase a KVM Virtual Machine's Disk Size By James Walker Published KVM is a popular virtualization technology built into the Linux kernel. We are going to increase the VM’s virtual hard disk storage using KVM resize disk, before you perform that, first you need to find the KVM disk image. This is the size perceived from the guest OS and the one reported by virt-manager (the GUI). It creates a "domain" and starts the vm with the disk, but instead of 10 GB, it shows it as 2.2 GB. Problem > However, this doesn't work as expected. disk path=/path/to/cloud-init.img,device=cdrom \ disk path=/path/to/bionic-server-cloudimg-amd64.img,format=qcow2,bus=virtio,size=10 \ Check the new size of the image: rootkvm: qemu-img info debian.img image: debian.img file format: raw virtual size: 20G (21474836480 bytes) disk size: 848M rootkvm. In order to resize such an image, you will need to convert it to raw image first using the qemu-img convert command. The command that I tried to do what I want, using Ubuntu cloud images: virt-install \ Please note that not all image types support resizing. Actually, from the virt-install manpages it looks like one could do something like -import -disk path=/home/user/my_os.img,size=10 and it would make sure available storage for guest OS is 10 GB. qemu-img resize filename size You can also resize relative to the current size of the disk image. It's ok for me, but I find it troublesome that I can't set the maximum size of the image, that one the guest OS perceives from inside.Įxplored way > I learnt how to resize a qemu image with qemu-img and the gparted live cd, but I'm sure there's an easier way. However, using libvirt and qemu with qcow2 images such as one of debian cloud, the process I have found does not separate the working disk image from the downloaded or template one, using "import from existing image". Back then, the UI would guide me to choosing a "template" ISO image for the OS, and creating a separate VDI storage file without modifying the "template" image. I am using qemu/kvm with libvirt and have used VirtualBox in the past. Context > I am a bit confused about disk images and their installation.
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