Monthly Archives: July 2011

Xen at Silicon Valley Linux User Group

Stefano Stabellini, one ouf our Xen maintainers will talk about Xen Support in the Linux Kernel: Upstreaming Efforts and New Developments at the Augst  SVLUG meeting. The SVLUG meeting is held in Mountain View, Aug 3 from 7-9 PM at the Symantec Offices. See you there!


Xen reuses many externals of open source projects, Qemu and Linux in particular. During the first years of existence, Xen accumulated a large number of changes to these external projects, but then struggled to upstream them. In the last couple of years, the Xen community has been removing dependencies on downstream modifications, and establish better relationships with other open source communities. What is the current status of Xen in relation with other free software projects?

At the same time, Xen development proceeded at a fast pace, and several new features were introduced; this talk will go through one in particular: PV on HVM support in the Linux kernel. Traditionally, Linux has always run on Xen either as a pure PV guest or as a virtualization- unaware guest in an HVM domain. Under the name “PV on HVM”, work has been done to make Linux aware that is running on Xen, and enable as many PV interfaces as possible, even when running in an HVM container.

XCP 1.1 Beta Release

The XCP project team would like to let you know that we have released XCP 1.1 beta today. While this is only a minor version bump from XCP 1.0, there are quite a few new features included with this release:

  • Security updates and bug fixes
  • IntelliCache: Enables you to use a combination of Shared storage and local storage caching.
  • Local Storage Spans All Physical Volumes: When EXT local storage is used on a host containing multiple physical disks, the local Storage Repository (SR) now spans all the disks in a single LVM volume group.
  • Reset-on-boot VM behaviour: Disks with the on-boot option set to reset, is now available for disks in any type of SR. (Previously it was only available for disks in NFS and EXT SRs.)
  • Block SCSI Generic Support: BSG support added enabling full compatibility with Emulex and QLogic management functionality.
  • Enhanced guest OS support: Support for Red Hat Enterprise Linux (RHEL) 6.

The beta will continue until the community is satisfied that we have resolved all critical bugs, but we hope to publish XCP 1.1 final release in late July. If you do believe you have found a bug with the beta, please report it to the xen-api mailing list with the subject “XCP BETA BUG: <brief description of bug>“.

The next major release of XCP will be released as beta later this month. For more information, see the XCP Roadmap page on the wiki.

XenSummit Abstracts Available

The abstracts for XenSummit North America are now available on the XenSummit portal.

Note that early registration ends Monday (registration fee will be raised  to $150 after that).

If you are interested in participating in a possible developer meeting on August 4 (the day after the summit), sign up  here. If at least 25 people sign up, we will hold the meeting.

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