How To Manage Ubuntu 11.10 Xen Kernel?

If you are getting an ubuntu 11.10 Xen kernel error, this guide has been written to help you.

After a lot of experience and many problems, I have decided to abandon openSuSE 11.4 and its proprietary xen implementation in favor of the PVOPS kernel and another distribution.

It became difficult for me to choose the right person, because now I am walking with 11 ubuntu.10. One reason is that it needs to be driver friendly and easily customizable. It works with the right components to run various hypervisors, including my best: xen.

For those unfamiliar with xen’s general history, here’s a summary (errors and omissions turned out to be unintentional!)

Xen provides paravirtualization for running software. Unlike the hardware virtualization you’re familiar with from Virtual Box and VMware, a paravirtualized flight system needs to know that it’s virtualized. This requires access to the source code, which is one of the reasons why you can’t run paravirtualized Windows on Linux Xen. Microsoft is releasing its own Xen imitation called Hyper-V, but it’s missing some impressive features.

ubuntu 11.10 xen kernel

Xen is loaded into a handy hypervisor calledReception dom0 with exclusive access to the equipment. Guests (commonly referred to as virtual machines or domUs) typically manage end-to-end hypervisor hardware.

After a while, I bought from Citrix. The Xen sources were not originally part of the official kernel and should be patched there. This meant that the kernel had to be compiled as well, which not everyone likes to do. For some other reason, Red Hat stopped working this way with Fedora 9, and Red Hat Linux 5.x is the last of their enterprise distributions to offer dom0 support. Hat Red 5 must be based on the 2.6.18.x kernel and all backports before development. The 2.6.18 kernel is also known as the “xenified kernel” due to these fixes.

Right now it looked like Zen was dead (at least to help me). The processors could increasingly be the effective bottlenecks in silicon, rather than the software that accelerated ESX by orders of magnitude. The benefits of paravirtualization have been noticeably reduced.

To my knowledge, OpenSuSE is the only distribution that supports xen patches; However, their 11.4 distribution had a lot of problems withUsage due to which our company has abandoned it. Looks like OpenSuSE 12.1 is still releasing patches.

However, over the years of need, Xen fixes have been included to support the kernel. Wim Kukarts suggests an interesting experiment here: http://blogs.oracle.com/wim/entry/linux_mainline_contains_all_the. A major shift in pure kernel development was the move from xenified kernels (other than “kernel”) to paravirtualized operations, or pvops for short. The Pvops core contains all the basic infrastructure to be either a Xen core or a “regular” desktop core. Fedora 15, Ubuntu and others use the PVOPS kernel which requires Xen 4.0.

Maiskernen 2.6.39+ first introduced the ability to ship any dom0 and domU without a kernel patch.

I’ve set up a minimal Ubuntu server version of 11.10 in my environment. To take advantage of Xen virtualization, implementation packages and their dependencies are required:

  • xen-hypervisor-4 was.1-amd64
  • xen-utils-4.1
  • xenwatch
  • xen tools
  • xen-utils-general
  • xenstore-utilities
  • virtual
  • virtual viewer
  • virtual manager
  • This expands on the new boot menu associated with grub2. Using the linked grub2 scared me a bit after changing lilo and the “legacy” grub. To convey friendlier terms, I have placed a startupmanager and linked to help.ubuntu.com/community/Grub2 which is a great resource. Speaking of “installation”. As an RPM fan, using apt-cache, dpkg and apt-get takes very little time. Luckily, there are many tutorials for Debian/Ubuntu, including toolkits.

    ubuntu 11.10 xen kernel

    Using the boot manager, I changed the appropriate default boot menu item for the current Xen kernel and rebooted. Due to a bug in the ACPI implementation on the server, I needed to change the /etc/default/grub file to acpi=ht.

    In addition, the entire /etc/xen/xend-config.sxp file should be changed to contain (xend-unix-server yes)

    Time to reboot! After restoring the game console, check for xen virsh:

    # and only xm listName ID Memory VCPUS Status Time (s)Domain-0 – I – In 23149 – I ——- 16.6# Viral versionCompiled with library: libvir 0.9.2Use the library: libvir 0.9.2API Usage: Xen 3.0.1Working hypervisor: Xen 4.1.0

    After a reboot, I was surprised to see “virbr0” some sort of interface in the ifconfig output. I checked the /etc/network/interfaces file where Ubuntu stores its network, but Formation didn’t find anything. The libvirt RSS feeds (http://wiki.libvirt.org/page/Networking) describe virbr0 as the city, the “default” network, just created by libvirt when started using NAT. The configuration file is located at /usr/share/libvirt/networks/default.xml and is used for raw and dirty live CDs or other non-production bootable media. The documentation just says that you shouldn’t just manually add interfaces to the bridge. The default purchase is Web 2 . 0 Usability: The DHCP server distributes an IP address, and NAT works with it from the system, including the correct configuration of software rules. But I don’t want to.

    What I wanted was a setup similar to the previous one: host networks only, br0 for the “public” network, br1 then br2 for RAC connections, and storage tied to iSCSI. The tools for this are in the bridge-utils package. To set up a bridge, rewrite the /etc/network/interfaces file and add the following directives:

    Jądro Ubuntu 11.10 Xen
    Ubuntu 11.10 Kernel Xen
    Ubuntu 11.10 Xen-kernel
    우분투 11.10 젠 커널
    Ubuntu 11.10 Xen Kernel
    Ubuntu 11.10 Xen Kernel
    Núcleo Ubuntu 11.10 Xen
    Ядро Ubuntu 11.10 Xen
    Ubuntu 11.10 Xen-Kernel