2.1.3 Multipath Installation

Oracle VM Server can be installed to a multipathed disk attached to a Fibre Channel adapter. There are a number of points to be aware of when performing an installation to a multipathed disk:

  • You must have a Fibre Channel HBA enabled within the target server's boot BIOS. Refer to the documentation provided by your adapter manufacturer to obtain instructions on loading firmware and enabling the adapter.

  • Your target server BIOS must be configured to select the HBA and target disk as the primary boot device after the installation is complete.

  • The boot Fibre Channel adapter must be connected to an external disk large enough for the install contents and there should be enough free space available on the disk to complete the installation.

  • The target disk must be multipathed.

  • Run the Oracle VM Server Installer from CDROM or PXE boot. During the installation, you must select the entire disk for installation. Ensure that only one multipath disk is selected for installation and that this disk matches the one that you have prepared for the installation. Splitting an install across multiple disks for a boot-from-SAN configuration is not supported. Mixing local disks and multipath disks in an installation is not supported.

  • Continue with the installation instructions as set out in Section 2.1.2, “Installing Oracle VM Server From a DVD-ROM or CD-ROM”.

  • When you have completed the installation, reboot the server and remove the CDROM or update your PXE configuration to allow the server to boot from the Fibre Channel HBA and target disk defined as the primary boot device in the server's BIOS.

  • When the server has rebooted, confirm that it is using the multipathed disk for the root mount point. For example, when running df, the output should show something similar to:

    /dev/mapper/360a98000433468704234747633373175p2       51475068 1222456  47631172   3% /
  • Remember that if you wish to reinstall or boot from a local disk you must change the boot device order in the server's BIOS setup.

  • Unlike a default install to local disk, a multipath install does not use remaining disk space to create an additional partition to be used for locally hosted repositories or virtual machine assignment.