Iosxrvk9demo613qcow2 Exclusive May 2026

An engineer might execute a command like:

virsh start iosxrv-demo --disk /var/lib/libvirt/images/iosxrvk9demo613qcow2,exclusive

Or encounter a message:

Unable to open disk image iosxrvk9demo613qcow2: Resource temporarily unavailable (exclusive lock held)

What’s happening:

show platform

QCOW2 supports backing files and copy-on-write. If iosxrvk9demo613qcow2 is a base image, you typically create overlay (snapshot) images for each VM instance and lock the base image as exclusive read-only. However, if the base image is accidentally opened read-write by two VMs, corruption is almost certain. iosxrvk9demo613qcow2 exclusive

Thus, hypervisor managers (libvirt, oVirt, OpenStack) use exclusive locks to enforce:

In the world of network virtualization and software-defined networking (SDN), engineers often encounter cryptic filenames and command-line outputs. One such string—iosxrvk9demo613qcow2 exclusive—contains critical information for anyone working with Cisco’s IOS XRv (Virtual Routing and Forwarding) platform. An engineer might execute a command like: virsh

This article breaks down what this string means, its components, and why the term exclusive matters when deploying virtual network devices.

Filesystem inside – Usually a split image: ISO + qcow2 (disk). qcow2 alone needs an ISO bootloader.

Before importing, ensure your lab environment meets these specs. The 64-bit version is heavier than legacy 32-bit images. Or encounter a message: Unable to open disk