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 vxvmconvert(1M)		  VxVM 3.5		     vxvmconvert(1M)
				 1 Jun 2002



 NAME
      vxvmconvert - convert LVM volume groups to VxVM disk groups

 SYNOPSIS
      vxvmconvert

 DESCRIPTION
      vxvmconvert is a menu-driven program to convert an HP Logical Volume
      Manger (LVM) configuration to a VERITAS Volume Manager configuration.
      This man page is a brief overview of vxvmconvert.	 Refer to the
      VERITAS Volume Manager Migration Guide for a detailed description
      before using the conversion procedure.

      The vxvmconvert script is interactive and prompts you for responses,
      supplying defaults where appropriate.  There is a Help facility at
      every prompt.  Enter a question mark (?) at a prompt to display a
      context-sensitive help message.

      With vxvmconvert you can identify LVM volume groups, list disks,
      analyze volume groups for conversion and complete the conversion of
      LVM volume groups to VxVM disk groups.

      LVM configurations are converted at the volume group level.  All disks
      used in a volume group are converted together.  You cannot use
      vxvmconvert to convert unused LVM disks (those not part of an LVM
      volume group) to VxVM disks. To convert unused LVM disks, use pvremove
      to take the disk out of LVM control, then initialize the disk for VxVM
      use by using vxdiskadm (see pvremove(1M) and vxdiskadm(1M) for more
      information).

      vxvmconvert changes disks within LVM volume groups to VxVM disks by
      replacing the areas of the disks used for LVM configuration
      information and with the equivalent VxVM volume configuration
      information.  Portions of the disks used for user data, such as file
      systems and databases, are not affected by the conversion.

      The conversion process changes the names by which your system refers
      to the logical storage, so must be done offline.	No applications can
      access data in the volume groups undergoing conversion.  You must
      unmount file systems using those volumes and shut down any
      applications, such as databases, that might use the volumes directly.

 OPERATIONS
      Analyze LVM Volume Groups for Conversion
		Use this operation to analyze one or more LVM volume groups
		for conversion to use by VxVM.	The analysis checks for
		problems that can prevent the conversion from completing
		successfully.  It calculates the space required to add
		volume group disks to a Volume Manager disk group.  More
		than one volume group may be entered at the prompt.  A
		grep-like pattern may be used to select multiple volume



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 vxvmconvert(1M)		  VxVM 3.5		     vxvmconvert(1M)
				 1 Jun 2002



		groups.

		See the ``Limitations in Conversion'' section in the Volume
		Manager Migration Guide for more information.

      Convert LVM Volume Groups to VxVM
		Converts one or more LVM volume groups to one or more VxVM
		disk groups.  This adds the disks to a VxVM disk group and
		replaces existing LVM volumes with VxVM volumes.

		vxvmconvert prompts you to name the VxVM disk group that
		replaces the LVM volume group being converted.	A default is
		suggested at the prompt.  For example, if you are converting
		a volume group vg08, vxvmconvert renames it as dg08.

		See to the sections ``Dealing with New Logical Volume
		Names'' and ``Tailoring your VxVM Configuration'' in the
		Volume Manager Migration Guide for more information.

      Rollback from VxVM to LVM
		Rollback reverts VxVM disk groups to LVM volume groups.
		vxvmconvert provides a limited snapshot capability for the
		LVM metadata in a converted volume group.  A snapshot is a
		simple protection method to use during conversion.

		Caution! Do not use this operation if the VxVM disk group
		was modified since the conversion.

		See to the section ``Restoring LVM Volume Groups and
		Disaster Recovery'' in the Volume Manager Migration Guide
		for more information.

      List Disk Information
		Displays information about the disks on a system.  You can
		obtain detailed information about a disk by entering a
		specific disk device address.

      List LVM Volume Group Information
		Listvg displays a list of LVM volume groups.  You can obtain
		detailed information about an LVM volume group at a specific
		disk device address.

 SEE ALSO
      pvremove(1M), vgcfgbackup(1M), vgrestore(1M), vxdisk(1M),
      vxdiskadd(1M), vxdiskadm(1M), vxintro(1M)

      VERITAS Volume Manager Migration Guide







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