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|
summary: Check that a kernel can be reverted after it has booted
details: |
This test checks that a kernel snap that has not finished installation but
that already booted can be reverted properly if something else fails, like a
post-refresh hook.
systems: [ubuntu-*]
execute: |
echo "Build kernel with failing post-refresh hook"
VERSION="$(tests.nested show version)"
unsquashfs -d pc-kernel "$(tests.nested get extra-snaps-path)"/pc-kernel.snap
HOOKS_D=pc-kernel/meta/hooks/
POST_REFRESH_P=$HOOKS_D/post-refresh
mkdir -p "$HOOKS_D"
cat > "$POST_REFRESH_P" << EOF
\#!/bin/bash -ex
exit 1
EOF
chmod +x "$POST_REFRESH_P"
snap pack pc-kernel/ --filename=pc-kernel_badhook.snap
echo "Wait for the system to be seeded first"
remote.exec "sudo snap wait system seed.loaded"
boot_id="$(tests.nested boot-id)"
echo "Install kernel with failing post-refresh hook"
remote.push pc-kernel_badhook.snap
chg_id=$(remote.exec 'sudo snap install --dangerous --no-wait ./pc-kernel_badhook.snap')
echo "Wait for reboot"
remote.wait-for reboot "$boot_id"
boot_id="$(tests.nested boot-id)"
echo "Wait for second reboot after post-refresh hook failure"
remote.wait-for reboot "$boot_id"
boot_id="$(tests.nested boot-id)"
# wait for change to finish with error
not remote.exec sudo snap watch "$chg_id"
# make sure that no additional reboots have happened while the change finished
test "$boot_id" = "$(tests.nested boot-id)"
echo "Check that change finished with failure and that the old snap is being used"
remote.exec "snap info pc-kernel | MATCH 'installed:.*\(x1\)'"
remote.exec "snap changes | MATCH \"^$chg_id.*Error\""
if [ "$VERSION" -ge 20 ]; then
# shellcheck disable=SC2016
remote.exec 'test $(readlink /run/mnt/ubuntu-boot/EFI/ubuntu/kernel.efi) = pc-kernel_x1.snap/kernel.efi'
remote.exec 'cat /run/mnt/ubuntu-boot/EFI/ubuntu/grubenv | MATCH "^kernel_status=$"'
echo "Check that modeenv has only the old kernel"
remote.exec 'cat /var/lib/snapd/modeenv | MATCH "^current_kernels=pc-kernel_x1.snap$"'
else
remote.exec 'cat /boot/grub/grubenv | MATCH "^snap_kernel=pc-kernel_x1.snap$"'
remote.exec 'cat /boot/grub/grubenv | MATCH "^snap_mode=$"'
remote.exec 'cat /boot/grub/grubenv | MATCH "^snap_try_kernel=$"'
remote.exec 'cat /proc/cmdline | MATCH snap_kernel=pc-kernel_x1.snap'
fi
|
