View source for AoE Support

= AoE Support =

== Project Description ==

AoE (ATA over Ethernet) is a network protocol that has been designed for high-performance access to PATA and SATA disks over an Ethernet network. This technology allows for storage area networks (SAN) to be built using standard, low-cost consumer technologies.

The goals of this project are to test the performance and reliability of AoE under heavy load for x86_64 based systems; if successful, it will be tested and implemented on ARM based systems.

[http://aoetools.sourceforge.net/ http://aoetools.sourceforge.net/]

== Project Leader(s) ==

* [[User:dliscio|David Liscio]]

== Project Contributor(s) ==


== Project Details ==

This project will involve testing if AoE for ARM is a viable solution compared the current NFS implementation of shared network storage. Performance and stability will be evaluated between two x86_64 based systems for initial testing; if successful, AoE testing and implementation will be ported to the ARM architecture for further analysis. The ARM port will consist of a server and client setup for testing AoE. The final stage will consist of a working AoE network storage solution that could possibly replace the current NFS storage used.

== Project Plan ==

Tracking mechanism: TBD

Key contacts:
* [[User:Chris Tyler|ctyler]]
* [[User:jacwang|jacwang]]
* [[User:Paul.W|Paul.W]]

Goals for each release and plans for reaching those goals:
* 0.1 - Test AoE under heavy load between two x86_64 based systems
        - Release stable server/client configuration
* 0.2 - Port AoE to ARM and test with an x86_64 server and client setup
        - Release working ARM client/x86_64 server configuration
* 0.3 - Build a working, tested solution for AoE on ARM
        - Release ARM kernel with AoE module (if stable)
        - Release tested and stable x86 server and arm client configuration

== Communication ==

=== Mailing Lists ===
[http://sourceforge.net/mail/?group_id=130453 http://sourceforge.net/mail/?group_id=130453]

=== Upstream Wiki and Web ===

=== Links/Bugs/Tracking ===
Pandaboard NIC driver drops connections when under heavy load. This is a workaround fix to resolve the issue.

<nowiki>#</nowiki> The driver smsc95xx, used by both Beagleboard XM and Pandaboard uses <br> 
<nowiki>#</nowiki> turbo mode by default, that enables multiple frames per Rx transaction,<br>
<nowiki>#</nowiki> increasing performance but consuming more kernel memory.<br>
<nowiki>#</nowiki> To avoid page allocation failures and smsc kevent drops we need to <br> 
<nowiki>#</nowiki> increase the minimum free system memory in the kernel to a higher value. <br> 
<nowiki>#</nowiki> If you’re still having page allocation failures, try to increase this <br> 
<nowiki>#</nowiki> value to 12288 or even higher. You could also disable the driver’s turbo <br> 
<nowiki>#</nowiki> mode, but decreasing the ethernet performance. <br> 
<nowiki>#</nowiki> If you encounter problems due to the settings please file a bug <br> 
<nowiki>#</nowiki> against the jasper-initramfs ubuntu package. <br> 
<nowiki>#</nowiki> For more details please check http://bugs.launchpad.net/bugs/746137 <br> 
vm.min_free_kbytes = 8192

=== Source Code Control ===

=== Blogs ===
[http://dliscio.wordpress.com http://dliscio.wordpress.com]

==== Seneca Particpants ====

==== Non-Seneca Participants ====

==== Planets ====

== Project News ==