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[docs] Firmware based boot from volume for iLO drivers 

Adds documentation for boot from iSCSI volume in UEFI boot mode

Change-Id: I50f1f5174b286b10edd9b387c025db23380a980a
Related-Bug: #1526861
This commit is contained in:
paresh-sao 2018-01-30 09:15:06 +00:00
parent fe5063a867
commit 4773fdfb52
1 changed files with 25 additions and 0 deletions
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doc/source/admin/drivers/ilo.rst
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@ -56,6 +56,8 @@ features like:
* Out-of-band discovery of server attributes through hardware inspection
* In-band RAID configuration
* Firmware configuration and secure firmware update
* `Firmware based UEFI iSCSI boot from volume support`_
Hardware Interfaces
^^^^^^^^^^^^^^^^^^^
@ -1939,6 +1941,29 @@ To create an agent ramdisk with ``Proliant Hardware Manager``, use the
See the `proliant-tools`_ for more information on creating agent ramdisk with
``proliant-tools`` element in DIB.
Firmware based UEFI iSCSI boot from volume support
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
With Gen9 (UEFI firmware version 1.40 or higher) and Gen10 HPE Proliant
servers, the driver supports firmware based UEFI boot of an iSCSI cinder volume.
This feature requires the node to be configured to boot in ``UEFI`` boot mode,
as well as user image should be ``UEFI`` bootable image, and ``PortFast``
needs to be enabled in switch configuration for immediate spanning tree
forwarding state so it wouldn't take much time setting the iSCSI target as
persistent device.
The driver does not support this functionality when in ``bios`` boot mode. In
case the node is configured with ``ilo-pxe`` boot interface and the boot mode
configured on the bare metal is ``bios``, the iscsi boot from volume is performed
using ``ipxe``. See :doc:`/admin/boot-from-volume` for more details.
To use this feature, configure the boot mode of the bare metal to ``uefi`` and
configure the corresponding ironic node using the steps given in :doc:`/admin/boot-from-volume`.
In a cloud environment with nodes configured to boot from ``bios`` and ``uefi`` boot
modes, the virtual media driver only supports uefi boot mode, and that attempting to
use iscsi boot at the same time with a bios volume will result in an error.
.. _`ssacli documentation`: http://h20566.www2.hpe.com/hpsc/doc/public/display?docId=c03909334
.. _`proliant-tools`: https://docs.openstack.org/diskimage-builder/latest/elements/proliant-tools/README.html
.. _`HPE iLO4 User Guide`: http://h20566.www2.hpe.com/hpsc/doc/public/display?docId=c03334051