Copy Trucluster disks to new location

From: Joachim Jaeckel (tru64-unix-managers_at_jj-it.de)
Date: 12/14/03

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To: tru64-unix-managers@ornl.gov

    Dear managers,

    I have to move a cluster to new disks due to partion/size changes
    in our raid array.

    Configuration:
    Tru64 V5.1b NHD7
    TruCluster, yet only one member, second member planed but not setup
    Raid Array MSA1000, all disks are in the MSA1000
    dsk0c..dsk6c: data (remains unchanged)
    dsk7b: cluster_root
    dsk7g: cluster_usr
    dsk7h: cluster_var
    dsk8a: root1_domain (boot disk member1)
    dsk8b: swap member1
    dsk8h: cnx member1
    dsk9: (reserved for member2)
    dsk10h: quorum cnx

    I have the following idea for moving the cluster to new disks:

    01. creating the new logical disks on the msa1000
    02. boot member 1 to single user mode, mount all (old) disks
    03. lookup new disks with hwmgr (expected: dsk11, dsk12, dsk13, dsk14)
    04. disklabel the new disks
    05. create advfs domains and filesets on the new disks,
        use same fileset names as on old disks
    06. copy clusterwide / /var and /usr partitons with
        vdump | vrestore to the new disks
    07. copy / partion on member1 boot disk to the new disk
        with vdump | vrestore
    08. copy cnx partition on member1 boot disk to the new disk with dd (?)
    09. copy cnx partition on quorum disk to the new quorum disk with dd (?)
    10. boot the new member1 boot disk to single user mode
    11. swap disknames for old disks and new disks with 'dsfmgr -e'
    12. reboot the system, should come up with full funktionalitity
    13. delete device files for old disks with 'dsfmgr -d'
    14. delete temporary advfs domain names from /etc/fdmns
    15. run sys_check

    Questions:
    Q1: is it possible to copy the cnx partions with dd in from member1
        in single user mode, or is it better to boot from cd-rom?
    Q2: do you have pointers to the tru64/trucluster documentation where
        copying disks is described?
    Q3: other remarks?

    tnx,
    -Joachim 

    --
Joachim Jaeckel
tru64-unix-managers@jj-it.de
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