4 Years in the Trenches with Linux/QEMU/libvirt

Over the past 4 years of running production OpenStack clouds for our clients we’ve learned a lot about the Linux/QEMU/libvirt stack. In ths session we will talk about our experience deploying and supporting this stack. We will cover a range of topics including how to tune the stack for performance of VMs, functionality of orchestration tasks such as live migration, and for resilience and error handling when the unexpected happens. Finally we will look at strategies for performing in-place upgrades and what type of challenges this can bring.