[Bug 2011536] Re: [SRU] Add FK_FORCE_EFI environment variable to skip EFI check

[Andreas Hasenack]

Hello Aristo,

thanks for your verification.

The test plan, however, has more steps:

> As this change should not impact the current usage of the tool, a test should be carried out that the 
> normal default usage (i.e. on target platforms) is not affected and retains the current behaviour.
> 
> We should also test that the current behaviour of exiting when the /sys/firmware/efi directory is 
> detected is retained when FK_FORCE_EFI is not set to "yes".
>
> Finally, the new ability to skip the EFI detection check when FK_FORCE_EFI is set to "yes" must be 
> tested.

As this is what was agreed on when the SRU was accepted, we need those
tests to be carried out. I'm therefore setting the verification tag back
to "needed".


** Tags removed: verification-done-jammy
** Tags added: verification-needed-jammy

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https://bugs.launchpad.net/bugs/2011536

Title:
  [SRU] Add FK_FORCE_EFI environment variable to skip EFI check

Status in flash-kernel:
  Fix Released
Status in flash-kernel package in Ubuntu:
  Fix Released
Status in flash-kernel source package in Jammy:
  Fix Committed

Bug description:
  [ Impact ]

  Flash-kernel currently checks to see if the machine is running in an
  EFI environment by checking the existence of /sys/firmware/efi, and
  exits if this is the case. This is undesirable in some cases, such as
  in virtual, container, or chroot environments where the host is
  running in an EFI environment, but the target device that the system
  will actually run on is not and needs flash-kernel to be run.

  This debdiff adds the ability to skip this check by setting the
  FK_FORCE_EFI environment variable to "yes" (which follows the usage of
  the FK_FORCE environment variable). This way, flash-kernel can be run
  even though the host system is running in an EFI environment.

  [ Test Plan ]

  As this change should not impact the current usage of the tool, a test
  should be carried out that the normal default usage (i.e. on target
  platforms) is not affected and retains the current behaviour.

  We should also test that the current behaviour of exiting when the
  /sys/firmware/efi directory is detected is retained when FK_FORCE_EFI
  is not set to "yes".

  Finally, the new ability to skip the EFI detection check when
  FK_FORCE_EFI is set to "yes" must be tested.

  [ Where problems could occur ]

  Some users may be relying on the current behaviour of flash-kernel to
  exit when the EFI environment is detected. The current default
  behaviour is being retained so as to avoid this issue, meaning a user
  should only see the effect of this change when setting FK_FORCE_EFI to
  "yes".

  [ Other Info ]

  N/A

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