partly rewritten I2O subsystem to better fit into 2.6 kernel

Hello,

finally there is a new version of the I2O subsystem available. The patch is 600k large and available under:

http://i2o.shadowconnect.com/patches/i2o-build_92.patch

and also bzip2 compressed under:

http://i2o.shadowconnect.com/patches/i2o-build_92.patch.bz2

The major benefits are:
- sysfs support
- PCI probing (which now should allow PCI hotplugging)
- dynamically allocated request queues and gendisks for block devices and a own request queue per disk (which results in much better performance on many parallel requests)

To verify the stability, we've run 4 parallel bonnie++ on a dual Opteron on 4 separate disks without a problem. To generate huge load we've also created a ext2 filesystem on all 4 disks in parallel. This lead to hangups of single disks in earlier versions, but is now fixed. Also the driver was tested on 32-bit as well, but only with 2 disks :-)

Compared to my last post, all subsystems are now converted to use the new API.

Please include the patch to get a wider exposure to test it, and let me know, if there is something missing or there is something to change.

Any comment is appreciated.

Best regards,

Markus Lidel
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Markus Lidel (Senior IT Consultant)

Shadow Connect GmbH
Carl-Reisch-Weg 12
D-86381 Krumbach
Germany

Phone:  +49 82 82/99 51-0
Fax:    +49 82 82/99 51-11

E-Mail: [email protected]
URL:    http://www.shadowconnect.com