z196 GA2 feature base support in Linux
The required Linux distribution versions for the base support of new features like OSA Express4 are documented in the announcement letter (pdf). To find it scroll down to the Software requirements section.
Updated Virtualization Cookbook
The virtualization cookbook from Michael MacIsaac, Brad Hinson, Marian Gasparovic received a major updates to cover z/VM 6.2 (including singe system image), RHEL 6.2 and the upcoming SLES11 SP2. All is now in one book and it’s even got a … Read the rest
Linux and VIPA – white papers
In the past month a few questions regarding the use of OSPF and VIPA on Linux have been raised. This is especially important to clients combining z/OS and Linux and System z. So here are a two references to start … Read the rest
Red Hat Enterprise Linux 6.2 released
Red Hat has announced the availability of RHEL 6.2. New general features are described in this “what’s new” document. The kernel level is now kernel-2.6.32-220.el6.
As usual there are the release notes and the technical notes in two separate documents. … Read the rest
Gathering performance data with sysstat
The sysstat package is included in all distributions but not always installed by default. It’s a collection of performance monitoring tools and you can check the options for your current version in the manual pages. It’s platform independent and so … Read the rest
New whitepaper: “Sharing A WebSphere Application Server V8 Installation Among Many Linux for IBM System z Servers”
In the new white paper “Sharing A WebSphere Application Server V8 Installation Among Many Linux for IBM System z Servers” you find a hands on description on a more complex WAS server setup. This is the update of the white … Read the rest
New Redpaper: “Installing Oracle 11gR2 RAC on Linux on System z”
This Redpaper describes the installation of the latest Oracle DB on RHEL 5 and SLES 11 for Linux on System z. It covers both ECKD as well as SCSI installations and on the Oracle side the Grid Infrastructure and RAC.… Read the rest
z/VM 6.2 – beyond SSI and LGR
The main features in z/VM 6.2 are certainly Single System Image (SSI) and Live Guest Relocation (LGR). With that it’s now possible to have up to four z/VMs in one cluster and move the Linux guests from one to the … Read the rest
How to find software solutions for Linux on System z
There are multiple sources for finding middleware and solutions for Linux. As the web sites get updated this may change – let me know then I adapt the description.
Please note that none of those catalogs is complete, they are … Read the rest
Why doesn’t the Linux iowait show up as busy time in the virtualization layer?
When a process in Linux has issued an IO and is waiting for a response there are basically two different possibilities. The good case is that there is other work pending and the CPU can continue to work. If there … Read the rest