diff options
| author | Milosz Wasilewski <milosz.wasilewski@foundries.io> | 2022-11-17 13:22:41 +0000 |
|---|---|---|
| committer | Anders Roxell <anders.roxell@gmail.com> | 2022-11-23 16:29:46 +0100 |
| commit | 7779fb6d77a3aa9026dee2b88c3850f47be0ced3 (patch) | |
| tree | 3c448d53579574b222202599e926214f07e8f682 | |
| parent | ea0537f5a22ef5a928defdbcf45ec6731f60cbcc (diff) | |
automated: linux: allow ostree to keep single kernel
When doing OTA upgrade ostree might decide that kernel image didn't
change and keep just single file for "old" and "new" sysroot versions.
This means that corrupting the kernel will brick the board and the
rollback wouldn't be possible. This patch addresses the issue by
creating a "fake" kernel and updating uEnv.txt. This is a bit more
invasive than the previous approach but seems to be the simplest way of
forcing "bad kernel" based rollback.
Signed-off-by: Milosz Wasilewski <milosz.wasilewski@foundries.io>
| -rwxr-xr-x | automated/linux/ota-rollback/download-update.sh | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/automated/linux/ota-rollback/download-update.sh b/automated/linux/ota-rollback/download-update.sh index 27049ac5..29b60f0a 100755 --- a/automated/linux/ota-rollback/download-update.sh +++ b/automated/linux/ota-rollback/download-update.sh @@ -204,9 +204,20 @@ if [ "${UPGRADE_AVAILABLE}" -eq 1 ]; then cat /boot/loader/uEnv.txt . /boot/loader/uEnv.txt # shellcheck disable=SC2154 - echo "Corrupting kernel image ${kernel_image}" - # shellcheck disable=SC2154 - echo bad > "${kernel_image}" + if [ "${kernel_image}" = "${kernel_image2}" ]; then + # when there is just one kernel, create a fake one and update uEnv.txt + # shellcheck disable=SC2154 + kernel_dirname=$(dirname "${kernel_image}") + # shellcheck disable=SC2154 + echo "bad" > "${kernel_dirname}/vmlinuz-corrupt" + # shellcheck disable=SC2154 + sed -i "s|kernel_image=${kernel_image}|kernel_image=${kernel_dirname}/vmlinuz-corrupt|g" /boot/loader/uEnv.txt + else + # shellcheck disable=SC2154 + echo "Corrupting kernel image ${kernel_image}" + # shellcheck disable=SC2154 + echo bad > "${kernel_image}" + fi fi else lava-test-raise "No-update-available-${TYPE}" |