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REPORT LUNS

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Unread 09-05-2008, 10:20 AM   #1
muriwai
Guest
 
Posts: n/a
REPORT LUNS

Hi,

I wonder what the format of SCSIOP_REPORT_LUN's LUN_LIST.Lun field is.

Storport.h has

UCHAR Lun[0][8]; // 4 level of addressing. 2 bytes each.

The SCSI standard says nothing about the format. It looks like it's just a
list of 64-bit numbers being LU numbers. Why does storport.h mention "4
level of addressing. 2 bytes each" then?

Thanks,

Andrew

 
Unread 09-05-2008, 04:32 PM   #2
Gary G. Little
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Posts: n/a
Re: REPORT LUNS

Look at the SAM-4 spec from t he T-10 committiee. LUNs are no longer 8 bits
in length but do indeed have multiple layers of addressing.

--
The personal opinion of
Gary G. Little


"muriwai" <muriwai@nospam.nospam> wrote in message
news:%23NWtwYbsIHA.1220@TK2MSFTNGP04.phx.gbl...
> Hi,
>
> I wonder what the format of SCSIOP_REPORT_LUN's LUN_LIST.Lun field is.
>
> Storport.h has
>
> UCHAR Lun[0][8]; // 4 level of addressing. 2 bytes each.
>
> The SCSI standard says nothing about the format. It looks like it's just a
> list of 64-bit numbers being LU numbers. Why does storport.h mention "4
> level of addressing. 2 bytes each" then?
>
> Thanks,
>
> Andrew



 
Unread 09-05-2008, 05:35 PM   #3
Maxim S. Shatskih
Guest
 
Posts: n/a
Re: REPORT LUNS

> I wonder what the format of SCSIOP_REPORT_LUN's LUN_LIST.Lun field is.
>
> Storport.h has
>
> UCHAR Lun[0][8]; // 4 level of addressing. 2 bytes each.
>
> The SCSI standard says nothing about the format. It looks like it's just a
> list of 64-bit numbers being LU numbers.


Look at SCSI specs at www.t10.org, I think REPORT LUNS is described in SPC or
SAM family of specs.

If the miniport/controller/LUN does not support REPORT LUNS, then SCSIPORT will
enumerate all LUNs from 0 up and stop on first non-responding LUN.

Don't know on STORPORT, probably it uses the same way.

--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com

 
Unread 09-05-2008, 09:20 PM   #4
muriwai
Guest
 
Posts: n/a
Re: REPORT LUNS

SAM-4 seems to be what I need.

Thank you



"muriwai" <muriwai@nospam.nospam> wrote in message
news:%23NWtwYbsIHA.1220@TK2MSFTNGP04.phx.gbl...
> Hi,
>
> I wonder what the format of SCSIOP_REPORT_LUN's LUN_LIST.Lun field is.
>
> Storport.h has
>
> UCHAR Lun[0][8]; // 4 level of addressing. 2 bytes each.
>
> The SCSI standard says nothing about the format. It looks like it's just a
> list of 64-bit numbers being LU numbers. Why does storport.h mention "4
> level of addressing. 2 bytes each" then?
>
> Thanks,
>
> Andrew


 
 

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