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Special Forums News, Links, Events and Announcements Software Releases - RSS News OpenAIS 0.83 (Trunk branch)
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Old 05-12-2008
OpenAIS 0.83 (Trunk branch)
OpenAIS is an open source implementation of the SA Forum (www.saforum.org) Application Interface Specification. The project currently implements APIs to improve availability by reducing MTTR. APIs available are cluster membership, application failover, checkpointing, eventing, distributed locking, messaging, closed process groups, and extended virtual synchrony passthrough. It is possible to write redundant applications that tolerate hardware, operating system, and application faults. Cluster software developers can write plugins to use the infrastructure provided by OpenAIS.License: BSD License (revised)Changes:
The addition of functions to the objdb API. The addition of a new confdb API for external configuration. The addition of a logsys API for external usage providing non-blocking threaded logging for a process. Significant bugfixes. Build system enhancements. libconfdb runs stand-alone. The ability to load and unload service engines during runtime execution with openais-cfgtool.Image

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LEARN ABOUT SUNOS

sd-readahead

SD-READAHEAD(7) 						   sd-readahead 						   SD-READAHEAD(7)

NAME

       sd-readahead - Reference implementation of APIs for controlling boot-time read-ahead

SYNOPSIS

       #include "sd-readahead.h"

DESCRIPTION

       sd-readahead.c and sd-readahead.h provide a reference implementation for APIs for controlling boot-time read-ahead, as implemented by the
       read-ahead subsystem of the systemd(1) init system.

       See sd_readahead(3) for more information about the function implemented.

NOTES

       This interface is provided by the reference implementation of APIs for controlling boot-time read-ahead and distributed with the systemd
       package. The algorithms it implements are simple, and can easily be reimplemented in daemons if it is important to support this interface
       without using the reference implementation. See the respective function man pages for details.

       In addition, for details about the algorithms check the liberally licensed reference implementation sources:
       http://cgit.freedesktop.org/systemd/systemd/plain/src/readahead/sd-readahead.c resp.
       http://cgit.freedesktop.org/systemd/systemd/plain/src/systemd/sd-readahead.h

       These APIs are implemented in the reference implementation's drop-in sd-readahead.c and sd-readahead.h files. It is recommended that
       applications consuming these APIs copy the implementation into their source tree, either verbatim or in excerpts. These interfaces are
       currently not available in a dynamic library.

       The functions provided by this interface become NOPs when -DDISABLE_SYSTEMD is set during compilation. In addition, if sd-readhead.c is
       compiled on non-Linux systems it becomes NOPs.

SEE ALSO

       systemd(1), sd_readahead(3), sd-daemon(7)

AUTHOR

       Lennart Poettering <lennart@poettering.net>
	   Developer

systemd 							    03/16/2012							   SD-READAHEAD(7)