Migrating a SAN root disk from EMC PowerPath to DMP control
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Migrating a SAN root disk from EMC PowerPath to DMP control

If the system has a root volume group (rootvg) under EMC PowerPath control, use this procedure to migrate the rootvg to DMP control.

To migrate a SAN root disk from EMC PowerPath to DMP control

  1. Remove the PowerPath device corresponding to the root disk (rootvg) from VxVM control:
    # vxdisk rm hdiskpowerX
  2. Issue the following command so that PowerPath returns the pvid to the hdisk device. Otherwise the bosboot command does not succeed. 
    # pprootdev fix
  3. Remove the device from PowerPath so that PowerPath releases control of the boot device on the next reboot. 
    # powermt unmanage dev=hdiskpowerX
  4. Enable DMP root support.

    See Configuring DMP support for booting over a SAN.

  5. Reboot the system. The system is booted with the rootvg under DMP control.
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