How do I reduce the size of an image in qcow2?

How do I reduce the size of an image in qcow2?

How to reduce the size of KVM QCOW2 images that grow out of hand

1. Free up any space in the disk from within the VM.
2. Shutdown the VM.
3. Backup the disk image that you want to reduce(Optional, if have a lot of faith in Unix commands that you never heard about before )
4. from the directory where your image is stored call:

How do I fix qcow2 images?

KVM repair qcow2 image

1. Shutdown VM.
2. Make a backup copy of the image.
3. Check image: qemu-img check vmflow.qcow2 …
4. Try repairing image: qemu-img check -r all vmflow.qcow2 …
5. Check again, if you’re lucky you might try to boot the VM in rescue mode and repair the fileystem there.

How do I increase the size of my qcow2 disk?

How To extend/increase KVM Virtual Machine (VM) disk size

1. Step 1: Shut down the Virtual Machine on KVM. Before you can extend your guest machine Virtual disk, you need to first shut it down.
2. Step 2: Extend your KVM guest OS disk. Locate your guest OS disk path.
3. Step 3: Extend guest VM disk.
4. Step 4: Grow VM partition.

How do I increase the size of a qemu image?

13 Answers

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.

How do I convert an image to qcow2?

1. Run the following command to convert the image file format from VMDK to QCOW2: qemu-img convert -p -f vmdk -O qcow2 centos6.9.vmdk centos6.9.qcow2. The parameters are described as follows:
2. Run the following command to query details about the converted image file in QCOW2 format: qemu-img info centos6.9.qcow2.

How do I open a qcow2 file?

How do I open a QCOW2 file? You can mount a QCOW2 disk image and use it to create a virtual machine in QEMU (cross-platform) and some other virtualization programs. You can also use QEMU to create and modify QCOW2 files. For more information, refer to QEMU’s official documentation.

How to resize qcow2 image in KVM server?

Here we are basically going to use two kvm tools, virt-resize and qemu-img to resize qcow2 image. Also Read: How to Install KVM Server tools (virsh) on Linux (RHEL/CentOS 7/8) in 6 Easy Steps a)You need to have KVM tools ( virt-resize and qemu-img) installed in your System. b)You should have sudo access to run privilege commands.

How much space do I need for a qcow2 image?

For example, you want to resize a 100gb allocation to 50gb, your current image shows 60gb used from outside (the qcow2 image) and has 30gb actually used inside. For the change, you’ll need to have 50gb space for the resized image and 60gb for the existing image, so 110gb total.

Is there a way to expand and shrink qcow2 images?

While expanding qcow2 images is easy, finding an easy way to shrink them was not. Recently, my Matrix VM ran out of disk space, while my miscellaneous hosting VM had way too much space. Since resizing images is often useful, I decided to make a fairly simple tutorial on how to expand and shrink the images. This is fairly straightforward.

How much space do I need to resize an image?

For the change, you’ll need to have 50gb space for the resized image and 60gb for the existing image, so 110gb total. If you managed to resize the partition from within the virtual machine (and thus didn’t shut it down already for resizing), shut it down now.