July 16, 2018

Red Hat Enterprise Linux (RHEL) 7.5 released

RHEL logo
On April 10th, 2018 Red Hat announced the next regular update to their flag ship operating system.

The kernel level for 7.5 is kernel-3.10.0-862.el7. The kernel level for 7.5-alt is kernel-4.14.0-49.el7a.
And this is actually the largest change. There is an alternate DVD with very interesting stuff. As Red hat wrote in their announcement: "This release also brings support for single-host KVM virtualization and Open Container Initiative (OCI)-formated runtime environment and base image to IBM z Systems."

On top the classic kernel got a lot of bug fixes and security & crypto enhancements

Here is my usual summary of links to more information:

July 15, 2018

SUSE Linux Enterprise 12 Service Pack 3 (SLES 12 SP3) released

SUSE logo

On September 7th 2017 eleven months after the last service pack  SUSE has released the latest updated to their flag ship server distribution.

The kernel level for 12.3 is kernel-4.4.73-5.1. So the major kernel level stayed the same, which allowed for a large amount of bug fixes to be included.

Here is my usual summary of links to more information:

July 14, 2018

Red Hat Enterprise Linux (RHEL) 7.4 released

On August 1st, 2017 Red Hat announced the next regular update to their flag ship operating system.

The kernel level for 7.4 is kernel-3.10.0-693.el7.

Here is my usual summary of links to more information:
From a Linux on Z Systems perspective the major enhancements are the support for the zEDC (genwqe tools) card, the new RoCE 2 card of the z14 (mlx 5 driver) and the usual set of cryptographic enhancements in libica, ibmca and opencryptoki.

May 17, 2018

Determining LPAR CPU assignment on a running System Z


LPAR CPU assignment view

A frequently question in the past was: which physical CPUs is my LPAR using right now? Since z14 the Hardware Management Console provides this for authorized users. The task is called "View partition Resource Assignments".
The Washington System Center has provided a short whitepaper "IBM Z: Accessing the LPAR Resource Assignment Task" with the details.