How to mount a QCOW2 drive

2023-06-25 11:10:03

[开发运维 | Dev Ops] ,

qcow2 file is a common disk file for virtual machines. We don't have to run the VM to gain access to the qcow file system.
It can be mounted directly with a little tweak to the host machine.

We first need to locate the libvirt image folder. It is usually located at /var/lib/libvirt/images
And enabled mod nbd

sudo modprobe nbd max_part=8
sudo qemu-nbd --connect=/dev/nbd0 /var/lib/libvirt/images/ayaka.qcow2

We create perform a disk check on the block device

sudo fdisk /dev/nbd0 -l
# list block devices

And then mount the disk

sudo mkdir /mnt/ayaka
mount /dev/nbd0p2 /mnt/ayaka

After you are done, we need to unmount and disconnect the disk

sudo umount /mnt/ayaka
sudo qemu-nbd -d /dev/nbd0
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