Date: Sun, 4 Jul 2010 14:40:52 +0200 From: Oliver Pinter <oliver.pntr@gmail.com> To: Alexander Motin <mav@freebsd.org> Cc: Daisuke Aoyama <aoyama@peach.ne.jp>, FreeBSD-Current <freebsd-current@freebsd.org> Subject: Re: [Need Help]isboot (iSCSI boot driver) version 0.2.1 Message-ID: <AANLkTikAEZzOWE3yTCWWm3GyRorvzSaMpnVMefIytHhS@mail.gmail.com> In-Reply-To: <4C30758E.7080102@FreeBSD.org> References: <6BC2B2FBAFFA4C26A46977F121B707E1@ad.peach.ne.jp> <mailpost.1278162245.7916753.99842.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw> <4C2F4B67.3060201@FreeBSD.org> <10CB692CA3FE4A8992B250B7F35B243B@ad.peach.ne.jp> <4C30758E.7080102@FreeBSD.org>
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iscsi initiator paniced over 4 dev, and the code has limitations of
devices, it is hardcoded to 4
9f2ae5be (scottl 2007-07-24 15:35:02 +0000 39) #define ISCSIDEV "iscsi"
9f2ae5be (scottl 2007-07-24 15:35:02 +0000 40)
9f2ae5be (scottl 2007-07-24 15:35:02 +0000 41) #define
ISCSI_MAX_TARGETS 4 //64
9f2ae5be (scottl 2007-07-24 15:35:02 +0000 42)
9f2ae5be (scottl 2007-07-24 15:35:02 +0000 43) #define ISCSI_MAX_LUNS
4
when setting this to 64, than paniced the kernel
On 7/4/10, Alexander Motin <mav@freebsd.org> wrote:
> 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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