virsh start vqfx20-re virsh console vqfx20-re You should see Juniper bootloader (GRUB) output. If the system hangs at “Loading initrd…” — the image is either corrupted or the VM lacks sufficient RAM/CPU. Once booted, log in as root (no password by default on unconfigured vQFX). Set management IP via vg1 interface:
qemu-img info vqfx202r110reqemuqcow2 Expected output should show file format: qcow2 , virtual size > 10G. If it says raw or corrupt, the file is not valid. If you need a VMDK for ESXi, convert: vqfx202r110reqemuqcow2 work
echo 1024 > /proc/sys/vm/nr_hugepages And add to VM XML: virsh start vqfx20-re virsh console vqfx20-re You should
qemu-img convert -f qcow2 -O vmdk vqfx202r110reqemuqcow2.vmdk Use virt-install or virt-manager . But manual XML editing yields best results. Below is a validated XML snippet: virtual size >