Mount qcow2 file on CentOS 7

Need to edit Cloud qcow2 image and this is how :

yum install libguestfs-tools libguestfs
chown 107:107 CentOS-7-x86_64-GenericCloud.qcow2
guestmount -a CentOS-7-x86_64-GenericCloud.qcow2 -i --rw /mnt

Make some changes and unmount /mnt

done.