ironic-python-agent/releasenotes/notes/support-bootloader-csv-file...

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---
features:
- |
Adds the capability into the agent to read and act upon bootloader CSV
files which serve as authoritative indicators of what bootloader to load
instead of leaning towards utilizing the default.
fixes:
- |
Fixes nodes failing after deployment completes due to issues in the Grub2
EFI loader entry addition where a ``BOOT.CSV`` file provides the
authoritative pointer to the bootloader to be used for booting the OS. The
base issue with Grub2 is that it would update the UEFI bootloader NVRAM
entries with whatever is present in a vendor specific ``BOOT.CSV`` or
``BOOTX64.CSV`` file. In some cases, a baremetal machine *can* crash when
this occurs. More information can be found at
`story 2008962 <https://storyboard.openstack.org/#!/story/2008962>`_.
issues:
- |
If multiple bootloader CSV files are present on the EFI filesystem, the
first CSV file discovered will be utilized. The Ironic team considers
multiple files to be a defect in the image being deployed. This may be
changed in the future.