problem with a disk

From: Cohen, Andy (Andy.Cohen_at_cognex.com)
Date: 09/23/03

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    Date: Tue, 23 Sep 2003 13:24:36 -0400
To: "Tru64-Unix-Managers (E-mail)" <tru64-unix-managers@ornl.gov>

    Hi,

    I just moved a machine (AS 800) running 5.1A PK4 with 2 attached storage
    devices. Upon powering up and rebooting one of the disks isn't showing up.

    When I issue:

            hwmgr -show scsi -full

    it shows (just a relevant snippet, not the whole output because there are
    more attached devices than just these):

           SCSI DEVICE DEVICE DRIVER NUM DEVICE FIRST
    HWID: DEVICEID HOSTNAME TYPE SUBTYPE OWNER PATH FILE VALID PATH
    -------------------------------------------------------------------------
      47: 8 sif disk none 2 1 dsk6 [2/0/0]

         WWID:03100030:"RZ2ED-LS (C) DECSEAGATE ST11820LC LK767218"

         BUS TARGET LUN PATH STATE
         ---------------------------------
         2 0 0 valid

           SCSI DEVICE DEVICE DRIVER NUM DEVICE FIRST
    HWID: DEVICEID HOSTNAME TYPE SUBTYPE OWNER PATH FILE VALID PATH
    -------------------------------------------------------------------------
      48: 9 sif disk none 0 1 (null)

         WWID:03100030:"RZ2ED-LS (C) DECSEAGATE ST11820LC LK768717"

         BUS TARGET LUN PATH STATE
         ---------------------------------
         2 1 0 stale

           SCSI DEVICE DEVICE DRIVER NUM DEVICE FIRST
    HWID: DEVICEID HOSTNAME TYPE SUBTYPE OWNER PATH FILE VALID PATH
    -------------------------------------------------------------------------
      49: 10 sif disk none 2 1 dsk8 [2/3/0]

         WWID:0c000008:0000-0e11-001e-5872

         BUS TARGET LUN PATH STATE
         ---------------------------------
         2 3 0 valid

    You can see that dsk6 and dsk8 are fine but what should be dsk7 shows
    (null). The PATH STATE for dsk6 and dsk8 is 'valid' but the PATH STATE for
    what should be dsk7 is 'stale'.

    When I issue 'disklabel -r dsk7' I get:
     
            disklabel: dsk7: No such device or address

    I don't see any errors in either /var/adm/messages or from the output of
    'uerf -R|more'. Also, the yellow fault light is NOT on.

    Any thoughts?

    Thanks!
    Andy

    Andy Cohen
    Database Systems Administrator
    Cognex Corporation
    1 Vision Drive
    Natick, MA 01760
    508-650-3079

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