[TUHS] UNIX on S/370

Clem Cole clemc at ccc.com
Wed Nov 22 03:06:56 AEST 2017

*OpenSSI (Single System Image) Clusters for Linux
<http://openssi.org/cgi-bin/view?page=openssi.html>​ is the URL for the

*Note Bruce has retired since he wrote the following, but the *
*paper describing the work is:   *Open Single System Image (openSSI) Linux
Cluster Project, Bruce J. Walker, Hewlett-Packard

Bruce.walker at hp.com


The openSSI Cluster project is an ongoing open source project which was
started two years ago to bring together some of the best Linux and Unix
clustering technologies into a single integrated and yet modular project.

Linux is rich in cluster technology but is segmented into 6 different
cluster areas
- high performance, load-leveling, web-service, storage, database and high
availability. The openSSI project address all cluster environments by
simultaneously addressing the three key cluster goals - availability,
scalability and manageability.
To accomplish this ambitious goal, the project was started with a Linux
adaptation of the NonStop Clusters for Unixware code, contributed by
Compaq/HP. That code included membership, internode communication,
clusterwide process management, clusterwide devices, a cluster filesystem,
clusterwide IPC (pipes, fifos, msgqueues, semaphores, etc.) and clusterwide
tcp/ip networking. Other open source clustering code has been integrated
into the modular architecture, including openGFS, openDLM, LVS, Lustre and
a small component of Mosix. The architecture of the project allows for
subsetting and substitution of components. A full function initial release
is available in both source and RPM form. Many enhancement opportunities
still exist both in integrating with other technologies and by improving
scalability and availability.
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