Changes For This Release

• Removed warning message displayed when Inquiry and system names differ.
• Added support for devices which do not return block descriptors. QAR 48942. A new (undocumented) command "set default dbd on" can be used to set the dbd bit in Mode Sense, to disable block discriptors.
  [ NOTE: Not all devices support the Mode Sense "dbd" bit. ]
• Correct problem where device name constructed from Inquiry product ID, contained a trailing space (minor, but screwed up Roger's scripts).
• Added a new command "sbtl bus target lun", shorthand for "set nexus". If no parameters are specified, "sbtl" does a "show nexus". See the scu help file for further information on this command.
• Updated tape density codes to support new densities and added missing densities (those not used by DEC tapes).
• Updated "show inquiry" to display SCSI-3 supported capability bits.
  [ NOTE: These SCSI-3 bits are _only_ displayed if they are set. ]
• Modified "show edt" to skip EDT entries marked as "Not Present".
  [ NOTE: These are normally entries from LUN's with no devices. ]
• Changed default "show edt" summary display format, and added a new option "capabilities" to list device capabilities enabled. See below.
  [ NOTE: The "N/W" field indicates Narrow or Wide (requested by rer). ]
• Fixed problem using wrong mask when obtaining LUN (lost high LUN bit).
  [ NOTE: This problem only existed on the non-ptos version of 'scu'. ]

Last modified: December 29th, 1999

Examples:

og% scu show edt

CAM Equipment Device Table (EDT) Information:

    Bus/Target/Lun Device Type  ANSI  Vendor ID    Product ID    Revision N/W
    -------------- ----------- ------ --------- ---------------- -------- ---
     0    0    0   Direct      SCSI-2 DEC       RZ28     (C) DEC   442D    N
     0    1    0   Direct      SCSI-2 DEC       RZ29B    (C) DEC   0014    N
     0    2    0   Direct      SCSI-2 DEC       RZ29B    (C) DEC   0014    N
     0    3    0   Direct      SCSI-2 DEC       RZ28M    (C) DEC   0466    N
     0    5    0   Sequential  SCSI-2 DEC       TLZ06     (C)DEC   4BQD    N
     0    6    0   CD-ROM      SCSI-2 DEC       RRD43   (C) DEC    1084    N
     1    4    0   Sequential  SCSI-2 DEC       TLZ7      (C)DEC   4BQH    N
     1    4    1   Changer     SCSI-2 DEC       TLZ7      (C)DEC   4BQH    N
     1    5    0   Sequential  SCSI-2 DEC       TLZ9     (C) DEC   A017    N
     1    5    1   Changer     SCSI-2 DEC       TLZ9     (C) DEC   A017    N

og% scu show edt cap

CAM Equipment Device Table (EDT) Information:

    Bus/Target/Lun Device Type  ANSI  Vendor ID    Product ID    Revision Capabilities
    -------------- ----------- ------ --------- ---------------- -------- ------------
     0    0    0   Direct      SCSI-2 DEC       RZ28     (C) DEC   442D   cmdque transdis sync
     0    1    0   Direct      SCSI-2 DEC       RZ29B    (C) DEC   0014   cmdque transdis linked sync
     0    2    0   Direct      SCSI-2 DEC       RZ29B    (C) DEC   0014   cmdque transdis linked sync
     0    3    0   Direct      SCSI-2 DEC       RZ28M    (C) DEC   0466   cmdque transdis sync
     0    5    0   Sequential  SCSI-2 DEC       TLZ06     (C)DEC   4BQD   rmb linked sync
     0    6    0   CD-ROM      SCSI-2 DEC       RRD43   (C) DEC    1084   rmb linked sync reladdr
     1    4    0   Sequential  SCSI-2 DEC       TLZ7      (C)DEC   4BQH   rmb linked sync
     1    4    1   Changer     SCSI-2 DEC       TLZ7      (C)DEC   4BQH   rmb linked sync
     1    5    0   Sequential  SCSI-2 DEC       TLZ9     (C) DEC   A017   rmb mchngr sync
     1    5    1   Changer     SCSI-2 DEC       TLZ9     (C) DEC   A017   rmb mchngr sync

og% scu sbtl 1 5 1 show inquiry
Device: TLZ9, Bus: 1, Target: 5, Lun: 1, Type: Medium Changer

Inquiry Information:

            Peripheral Device Type: 0x8 (Medium Changer)
              Peripheral Qualifier: 0 (Peripheral Device Connected)
              Device Type Modifier: 0
                   Removable Media: Yes
                      ANSI Version: 2 (Complies to ANSI X3.131-1994, SCSI-2)
                      ECMA Version: 0
                       ISO Version: 0
              Response Data Format: 2 (SCSI-2)
             Terminate I/O Process: No
                 Additional Length: 31
            Medium Changer Support: Yes
                Soft Reset Support: No
           Command Queuing Support: No
           Target Transfer Disable: No
            Linked Command Support: No
        Synchronous Data Transfers: Yes
      Support for 16 Bit Transfers: No
      Support for 32 Bit Transfers: No
       Relative Addressing Support: No
             Vendor Identification: DEC     
            Product Identification: TLZ9     (C) DEC
           Firmware Revision Level: A017

og% 
og% scu
scu> sbtl 1 5 0
Device: TLZ9, Bus: 1, Target: 5, Lun: 0, Type: Sequential Access
scu> show mode

Mode Parameters (Current Values):

Mode Parameter Header:

                  Mode Data Length: 71
                       Medium Type: 0x32
                        Tape Speed: 0 (Using Default Speed)
                     Buffered Mode: 0x1 (Buffering Enabled)
                   Write Protected: No
           Block Descriptor Length: 8

Mode Parameter Block Descriptor:

                      Density Code: 0x24 (61000 BPI, DDS-2 (DDS, CS))
          Number of Logical Blocks: 0
              Logical Block Length: 0

scu> set default dbd on
scu> show mode

Mode Parameters (Current Values):

Mode Parameter Header:

                  Mode Data Length: 63
                       Medium Type: 0x32
                        Tape Speed: 0 (Using Default Speed)
                     Buffered Mode: 0x1 (Buffering Enabled)
                   Write Protected: No
           Block Descriptor Length: 0

scu> quit
og%