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

From: Alexander Motin <mav_at_FreeBSD.org>
Date: Sun, 04 Jul 2010 14:50:38 +0300
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
Received on Sun Jul 04 2010 - 09:51:38 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:05 UTC