Saturday, December 26, 2015

XenServer Dundee Beta.2 Available [feedly]



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XenServer Dundee Beta.2 Available
// Latest blog entries

With 2015 quickly coming to a close, and 2016 beckoning, it's time to deliver a holiday present to the XenServer community. Today, we've released beta 2 of project Dundee. While the lag between beta 1 in September and today has been a bit longer than many would've liked, part of that lag was due to the effort involved in resolving many of the issues reported. The team is confident you'll find both beta 2 and Steve Wilson's blog affirming Citrix's commitment to XenServer to be a nice gift. As part of that gift, we're planning to have a series of blogs covering a few of the major improvements in depth, but for those of you who like the highlights - let's jump right in!

CPU leveling

XenServer has supported for many years the ability to create resource pools with processors from different CPU generations, but a few years back a change was made with Intel CPUs which impacted our ability mix the newest CPUs with much older ones. The good news is that with Dundee beta.2, that situation should be fully resolved, and may indeed offer some performance improvements. Since this is an area where we really need to get things absolutely correct, we'd appreciate anyone running Dundee to try this out if you can and report back on successes and issues.

Increased scalability

Modern servers keep increasing their capacity, and not only do we need to keep pace, but we need to ensure users can create VMs which mirror the capacity of a physical machines. Dundee beta.2 now supports up to 512 physical cores (pCPUs), and can create guest VMs with up to 1.5 TB RAM. Some of you might ask about increasing vCPU limits, and we've bumped those up to 32 as well. We've also enabled Page Modification Logging (PML) in the Xen Project hypervisor as a default. The full design details for PML are posted in the Xen Project Archives for review if you'd like to get into the weeds of why this is valuable. Lastly we've bumped the kernel version to 3.10.93.

New SUSE templates

SUSE have released version 12 SP1 for both (SUSE Linux Enterprise Server) SLES and (SUSE Linux Enterprise Desktop) SLED, both of which are now supported templates in Dundee.

Security updates

Since Dundee beta.1 was made available in late September, a number of security hotfixes for XenServer 6.5 SP1 have been released. Where valid, those same security patches have been applied to Dundee and are included in beta.2.

Download Information

You can download Dundee beta.2 from the Preview Download page (http://xenserver.org/preview), and any issues found can be reported in our defect database (https://bugs.xenserver.org).     


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