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ONTAP 7-Mode Transition

Preparing to transition HP-UX host LUNs with file systems

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Before you transition HP-UX host LUNs with file systems from Data ONTAP operating in 7-Mode to clustered Data ONTAP, you must gather information you need for the transition process.

Steps

  1. Display your LUNs to identify the name of the LUNs to be transitioned:

    lun show

  2. Locate the SCSI device name for the LUNs to be transitioned and the Agile name for the SCSI device:

    sanlun lun show -p

    In the following example, the transition LUNs are lun1 and lun3. The SCSI device names for lun1 are /dev/dsk/c14t0d1, /dev/dsk/c27t0d1, /dev/dsk/c40t0d1, and /dev/dsk/c31t0d1. The SCSI device names for lun3 are /dev/dsk/c14t0d2, /dev/dsk/c27t0d2, /dev/dsk/c40t0d2, and /dev/dsk/c31t0d2.

    The Agile name for SCSI device /dev/dsk/c31t0d1 is /dev/rdisk/disk11.

            ONTAP Path: f8040-211-185:/vol/vol185_n1/lun3
               LUN: 1
          LUN Size: 3g
       Host Device: /dev/rdisk/disk11
              Mode: 7
Multipath Provider: None
host      vserver   /dev/dsk
path      path      filename           host     vserver
state     type      or hardware path   adapter  LIF
-----     --------- ----------------   -------  -------
up        secondary /dev/dsk/c14t0d1   fcd0     fc4
up        primary   /dev/dsk/c27t0d1   fcd0     fc2
up        primary   /dev/dsk/c40t0d1   fcd1     fc1
up        secondary /dev/dsk/c31t0d1   fcd1     fc3
            ONTAP Path: f8040-211-183:/vol/vol183_n1/lun1
               LUN: 3
          LUN Size: 3g
       Host Device: /dev/rdisk/disk14
              Mode: 7
Multipath Provider: None
host      vserver   /dev/dsk
path      path	     filename           host     vserver
state     type      or hardware path   adapter  LIF
-----     --------- ----------------   -------  -------
up        secondary /dev/dsk/c14t0d1   fcd0     fc4
up        primary   /dev/dsk/c27t0d1   fcd0     fc2
up        primary   /dev/dsk/c40t0d1   fcd1     fc1
up        secondary /dev/dsk/c31t0d1   fcd1     fc3

  3. Identify the WWID for the LUN on the host:

    scsimgr get_info -D Agile_name_for_SCSI_device

    In this example, the LUN WWID for device /dev/rdisk/disk11 is 0x600a09804d537739422445386b755529:

    bash-2.05# scsimgr get_info -D /dev/rdisk/disk11 |grep WWID
World  Wide Identifier (WWID)     = 0x600a09804d537739422445386b755529

  4. List and record your volume groups:

    vgdisplay

  5. List and record your volume groups, logical volumes, and physical volumes:

    vgdisplay -v vg_name

  6. Write the VGID and logical volumes for the volume group to a mapfile:

    vgexport -p -s -m /tmp/mapfile/vg01 vg01

  7. Make a backup copy of the mapfile.vg01 to an external source.

  8. List and record the mount points:

    bdf

    The following example shows how the mount points should be displayed:

    bash-2.05# bdf
Filesystem     kbytes      used        avail   	used   Mounted on
/dev/vg01/lvol 123592960   1050952   22189796   5%   /mnt/qa/vg01
/dev/vg01/lvol2 23592960   588480    22645044   3%   /mnt/qa/vg02