How do I mount a qcow2 disk image?

I have a QEMU virtual machine that uses a qcow2 disk image.

How can I mount its filesystem without powering on the virtual machine?

4 Answers

A quick google search turns up the qemu-nbd program, mentioned here. It is part of the qemu-kvm package, so you'll have to install KVM if you aren't using that already. Not sure about any direct GNOME/KDE solutions, if that is what you were looking for. Here is an example for using it:

sudo modprobe nbd
sudo qemu-nbd -c /dev/nbd0 --read-only /path/to/image.qcow2
udisksctl mount -b /dev/nbd0p1

5

There's also libguestfs, but it's not yet available from official repositories1. There are binaries in libguestfs.org though.

1

xmount can make the disk images of some VMs look like a raw disk (which can then be partitioned with losetup, and the partitions mounted). I don't know if it supports qcow2, however.

1

you can directly mount as a normal mount like this

mount /dev/sdb1 /mount-point

But if u have n number of device mean you want again mount it to another directory for that you can follow this one:

Mounting a partition from raw image is pretty simple:

losetup /dev/loop0 image.img
kpartx -a /dev/loop0
mount /dev/mapper/loop0p1 /mnt/image

1

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