Re: SCSI luns

[Arjan van de Ven <arjan@infradead.org>]

On Tue, 2005-07-12 at 16:52 +0530, Amrut Joshi wrote:
> Hi,
> 
> Currently linux scsi subsystem doesnt store the 8-byte luns which are
> recieved in REPORT_LUNS reply. This information is forver lost once
> the scan is over. In my LDD  I need this information. Currently I have
> to snoop REPORT_LUNS reply, do scsilun_to_int for all the luns and

which LDD is this? Is it ready for merging into the linux kernel yet?

> store this mapping somewhere. This can be simplified by storing it in
> scsi_device. This field will be meaningful only if sdev->scsi_level >=
> SCSI_3.

> Heres the patch

your patch is whitespace damanged unfortunately... 

> -----------------------------------------------------------------------------------------------------------------
> --- drivers/scsi/scsi_scan.c.orig       2005-06-30 04:30:53.000000000 +0530
> +++ drivers/scsi/scsi_scan.c    2005-07-12 16:19:48.533788528 +0530
> @@ -1170,6 +1170,7 @@
>                                        " aborted\n", devname, lun);
>                                 break;
>                         }
> +                        memcpy(sdev->lun_address, lunp,
> sizeof(sdev->lun_address));
>                 }
>         }
> 
> --- include/scsi/scsi_device.h.orig     2005-06-30 04:30:53.000000000 +0530
> +++ include/scsi/scsi_device.h  2005-07-12 16:19:48.534788376 +0530
> @@ -58,6 +58,8 @@
>                                            could all be from the same event. */
> 
>         unsigned int id, lun, channel;
> +        struct scsi_lun lun_address;    /* scsi address returned by REPORT_LUNS
> +                                         * usable only if
> sdev->scsi_lun >= SCSI_3 */
> 
>         unsigned int manufacturer;      /* Manufacturer of device, for using
>                                          * vendor-specific cmd's */
> 
> ----------------------------------------------------------------------------------------------------------------------
> 
> Please CC replies to me as I am not on the list.
> 
> Thanks,
> -Amrut!
> -
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