Dave Jones authored 2 years ago and Vagrant Cascadian committed 1 week ago

When flash-kernel runs as part of a kernel installation, that kernel may
not be in the fully "installed" state. If it's a newly installed kernel,
it may also be in "triggers-pending" in which case, while the symlinks
for vmlinuz-$ver and initrd.img-$ver exist, the initrd itself does not
yet exist (because the initramfs-tools trigger has not yet run, so the
initrd symlink is "dead").

In this case, depending on the "method" selected for the board, the f-k
run may crash (aborting apt), or may continue but flash a non-functional
boot setup. In the latter case, this usually corrects itself with a
later run of f-k but it still potentially leaves the system in an
unbootable state for some portion of an apt run (which is not ideal).

This commit adds a check on the status of the package which owns the
kernel version requested to be installed. If it is not fully
"installed", it defers the f-k run (under the assumption it will become
installed at some point in the apt run). This can be overridden with
"--force". Tests are included for the new function.

Related issues: LP: #2007827, LP: #1861292, Debian bug #781742