SCSI luns

[Amrut Joshi <amrut.joshi@gmail.com>]

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
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
-----------------------------------------------------------------------------------------------------------------
--- 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!