[Bug 1517582] Re: flash-kernel causes postinsts to fail when it happens to be installed on an unsupported system

[Ming Lei]

The following should fix the issue of flash-kernel, could anyone give a test in MAAS?

diff --git a/functions b/functions
index 97bbdd9..e753054 100644
--- a/functions
+++ b/functions
@@ -429,6 +429,10 @@ fi
 kfile_suffix=$(get_kfile_suffix "$kfile")
 
 if ! check_supported "$machine"; then
+       # do nothing if one unsupported platform is booted from EFI
+       if [ -d /sys/firmware/efi ]; then
+               exit 0
+       fi
        error "Unsupported platform."
 fi

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https://bugs.launchpad.net/bugs/1517582

Title:
  flash-kernel causes postinsts to fail when it happens to be installed
  on an unsupported system

Status in flash-kernel package in Ubuntu:
  New

Bug description:
  For xgene-2 soc on EFI system, flash-kernel is failing:

  Unsupported platform.
  run-parts: /etc/initramfs/post-update.d//flash-kernel exited with return code 1
  dpkg: error processing package initramfs-tools (--configure):
   subprocess installed post-installation script returned error exit status 1
  Processing triggers for ureadahead (0.100.0-16) ...
  Processing triggers for ufw (0.34~rc-0ubuntu2) ...
  Errors were encountered while processing:
   initramfs-tools

  
  1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu

  This error surfaced during the deployment of a Wily MAAS arm64 daily
  cloud image.  http://cloud-images.ubuntu.com/daily

  2) The version of the package you are using, via 'apt-cache policy
  pkgname' or by checking in Software Center

  I mounted the root-image that MAAS and overlayroot use as the
  OverlayFS.  I located the changlog for flash-kernel and found the
  package information below:

  flash-kernel (3.0~rc.4ubuntu55) wily

  3) What you expected to happen

  I expected that postinsts would not fail.

  4) What happened instead

  postinsts failed.

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