Mainframe Linux

Linux and related applications running on IBM S/390 and zSeries mainframe hardware

fsiucv -- A Generic IUCV Device Driver for Linux 2.6 on S/390 and zSeries

fsiucv provides the ability to connect to arbitrary VM CP and CMS IUCV-based services from Linux applications. Each IUCV connection is presented to the Linux system as a device, with semantics similar to that of a serial connection. Data can be read from or written to the IUCV connection using simple shell tools, or can be handled using the standard Unix/POSIX file manipulation tools and APIs. Configuration of the driver is handled using the sysfs interface, and both local and distributed IUCV are supported.

How Many Linux Systems Can Dance on A Single S/390?

The VM operating system allows many hundreds, or even thousands, of Linux images to run simultaneously in their own virtual machines on a single IBM S/390 or zSeries mainframe. In this presentation, David Boyes examines what happens when the number of running Linux images is pushed to its extreme limits. A history of the widely-known "Test Plan Charlie" and lesser-known "Test Plan Omega" demonstrations is included in the presentation.


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