[Need Help]isboot (iSCSI boot driver) version 0.2.1

Alexander Motin mav at FreeBSD.org
Sun Jul 4 11:51:38 UTC 2010

Daisuke Aoyama wrote:
>>> Notes/Known Issues/Limitations:
>>> FreeBSD can't use transfer length > 64KB.
>> Since 8.0 FreeBSD can use any transfer lengths. 64K is a safety limit
>> for CAM SIMs that do not report maximum transfer size. If your driver
>> supports bigger transactions (and even if not), you should fill maxio
>> field in XPT_PATH_INQ response.
> I set maxio=1024*1024 in version 0.2.2. As a result, the request (each ccb)
> have 256 blocks (128KB). I don't know why it is 128KB.

128KB is a default MAXPHYS value. You may rise it in your kernel if you
want. I am successfully using 1MB MAXPHYS now.

Alexander Motin

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