12/8/2023 0 Comments Qemu img resizeOnly go for that if the result of the former step won't boot by not finding the bootloader. This last step burdensome and not always needed (depends on too many details). then chroot into this environment and run sudo update-grub to ensure all meta entries are in the right spot. For that finally mount your disks make sda15 to be /boot under the root FS of sda1. Warning: Never use qemu-img to modify images in use by a running virtual machine or any other process this may destroy the image. It can handle all image formats supported by QEMU. Then you have space free at the end which allows you to resize via qemu-img resize -shrink as explained on the man page.įinally since you moved the boot partition you might need to fix up things of the boot loader (not always true, but could apply in your case). Resizing or growing images in other formats (VMware, Bochs, cow, or cloop) is not supported to the best of my knowledge. Description qemu-img allows you to create, convert and modify images offline. Next you have the extra problem that your boot partition is after the data partition, so get space at the end that you can then shrink you also need to move that e.g. This example creates a qcow2 image with a maximum size of 10 GB: qemu-img create -f qcow2 /. Then you need to shrink the ext FS on sda1 via resize2fs as explained here. You can use the qemu-img command to manage disk images. The first step is to power off the VM before moving to the next steps. In this guide, we will see how to extend KVM virtual machine disk size using the first method. rootlocal:/tmp qemu-img create -f vmdk test.vmdk 2G Formatting test.vmdk, fmtvmdk size2147483648 compat6off zeroedgrainoff rootlocal:/tmp qemu-img info test.vmdk image: test.vmdk file format: vmdk virtual size: 2.0G (2147483648 bytes) disk size: 12K rootlocal:/tmp ls -lah test. For that - as it is a raw file - use losetup as explained here. Extending a powered-off VM Disk entirely from a host. To reach your target of "shrink the disk" you'd need to free space from the end of it, but your case needs some steps to achieve that from what I can see.įirst of all you need to know how to use this as a block device but do NOT mount it as all of the following will need it unmounted. First of all - in any such tasks backup your file in advance as there just are too many rough edges and things could go wrong. qemu-img resize +128G The guest appeared to immediately pick this new size up.
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