virt-install --name=testserver1 --file=/var/lib/libvirt/images/testserver1.qcow2 --file-size=60 --nonsparse --graphics spice --vcpus=2 --ram=4096 --cdrom=/tmp/CentOS-7-x86_64-Minimal-1611.iso --network bridge=virbr0 --os-type=linux --os-variant=generic

Starting install...
Allocating 'testserver1.qcow2' | 60 GB 00:00:00
ERROR internal error: process exited while connecting to monitor: 2017-04-07T13:57:13.208661Z qemu-system-x86_64: -drive file=/tmp/CentOS-7-x86_64-Minimal-1611.iso,format=raw,if=none,id=drive-ide0-0-1,readonly=on: Could not open '/tmp/CentOS-7-x86_64-Minimal-1611.iso': Permission denied
Removing disk 'testserver1.qcow2' | 0 B 00:00:00
Domain installation does not appear to have been successful.
If it was, you can restart your domain by running:
virsh --connect qemu:///system start testserver1
otherwise, please restart your installation.