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Virtualization Feed

Xen Hypervisor, KVM Hypervisor and Oracle virtualization resources, news, and support articles.

Customers Call the Shots — Verizon Cloud Adds Business Value with Quality of Service


Both businesses and consumers rely on public clouds for a range of tasks and activities from collaboration and video streaming to gmail and Netflix. New companies are born with just a dozen employees, a laptop and an Internet connection practically overnight. This is all thanks to cloud computing.

2 weeks to Xen Project Developer Summit – Chicago 18-19, IL, USA

Only last week, the Xen Project team was at OSCON where we launched Mirage OS 2.0 (event report to follow soon, but in the meantime check out thew following sessions Nymote and Mirage, Floss Weekly on Mirage OS and 

RDO Setup Two Real Node (Controller+Compute) IceHouse Neutron ML2&OVS&VXLAN Cluster on CentOS 7

As of 07/28/2014 Bug is still pending and workaround suggested above should be applied during two node RDO packstack installation.
Successful implementation of Neutron ML2&&OVS&&VXLAN multi node setup requires correct version of plugin.ini -> /etc/neutron/plugins/ml2/ml2_conf.ini which appears to be generated with errors by packstack.

ZFS with Redhat Cluster Suite

This is a very nice project I have been working on. The hardware at hand – two servers, with a shared SAS bus containing several SAS disks. Since it’s a shared bus, no RAID solution would cut it, and as I don’t want to waste disks with ASM (“normal” redundancy meaning half the size…), I went to ZFS storage.
ZFS is a wonderful technology, with many advantages, but with some dangerous pitfalls. As I prefer Linux, I did not bother with any Sloaris solutions, and went directly to Centos 6. I will describe my cluster setup below.

Mirage OS v2.0: The new features

The first release of Mirage OS back in December 2013 introduced the prototype of the unikernel concept, which realised the promise of a safe, flexible mechanism to build highly optimized software stacks purpose-built for deployment in the public cloud (see the

XCP Wiki Pages Have Been Migrated to

XCP is Dead; Long Live XenServer!

Last year was a momentous year for all things related to the Xen Project.  2013 saw Xen Project become a Linux Foundation Collaborative Project.  It also saw the separate XenServer project become Open Source under the auspices of

Mark Your Calendars! Great Xen Project Events Coming in August and September 2014

If you use — or are just interested in learning about — the Xen Project Hypervisor, you will want to mark your calendar now for two great events coming later this summer.

September 15: Xen Project User Summit, New York City, NY

The Xen Project User Summit is great for:

The Docker exploit and the security of containers

We normally only cover news and information directly related to Xen in this channel, but we thought it might be useful to briefly expand our scope a bit to mention the recent discussion about the Docker security exploit.

What’s the news?

Well to begin with, a few weeks ago Docker 1.0 was released, just in time for DockerCon.

RDO IceHouse Setup Two Node (Controller+Compute) Neutron ML2&OVS&VLAN Cluster on Fedora 20

Two KVMs have been created , each one having 2 virtual NICs (eth0,eth1) for Controller && Compute Nodes setup. Before running `packstack –answer-file= TwoNodeML2&OVS&VLAN.txt` SELINUX set to permissive on both nodes. Both eth1’s assigned IPs from VLAN Libvirts subnet before installation and set to promiscuous mode (, ). Packstack bind to public IP – eth0 , Compute Node

Release management: Risk, intuition, and freeze exceptions

I’ve been release coordinator for Xen’s 4.3 and 4.4 releases. For the 4.5 release, I’ve handed this role off to Konrad Wilk, from Oracle. In this blog, I try to capture some of my thoughts and experience about one aspect of release management: deciding what patches to accept during a freeze.

I have three goals when doing release management:

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