Public bug reported:
[Impact]
* finalrd is a useful tool, that improves ability to cleanly shut down
systems. It is now desired to backport it all the way back to xenial. On
classic systems it will not be installed by default, but available for
users to opt-in into having it. On Ubuntu Core systems it will be
installed by default, and used instead of snap-shutdown. As finalrd does
everything that snap-shutdown already did, and much more.
* finalrd is only tweaked slightly in version 6 to be compatible with
any systemd from xenial to groovy.
[Test Case]
Classic
* Install finalrd
* execute `sudo finalrd` and observe that no stderr is printed, and command
exits successfully
* check that /run/initramfs is created and populated with
/run/initramfs/shutdown, binaries and libraries.
* Reboot
* Observe that finalrd unit is started
** (optional) to make observing finalrd easier add /etc/finalrd/echo.finalrd
hook that does `echo $@` with a sleep
* Shutdown, capture console-log observe that finalrd was executed
Core
* Create custom core, core18 with finalrd preinstalled
* Building custom Ubuntu Core 16 and Ubuntu Core 18 image with above core
* Observe that finalrd unit is started on boot
* Shutdown, capture console-log observe that finarld was executed.
* Boot again
* execute `sudo finalrd` and observe that no stderr is printed, and command
exits successfully
* check that /run/initramfs is created and populated with
/run/initramfs/shutdown, binaries and libraries.
[Regression Potential]
* Packaging & tmpfiles were changed to be compatible with older systemd
versions. There are no changes to api/abi of the systemd units, or
.finalrd hooks. The package is not installed by default on
xenial/bionic, hence the number and type of machines affected is small.
If regressions are identified, reverting to previous version of the
package is safe course of action, as there are no upgrade/downgrade
incompatibilities between old & new versions of finalrd.
** Affects: finalrd (Ubuntu)
Importance: Undecided
Status: New
** Affects: finalrd (Ubuntu Xenial)
Importance: Undecided
Status: New
** Affects: finalrd (Ubuntu Bionic)
Importance: Undecided
Status: New
** Affects: finalrd (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: finalrd (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: finalrd (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: finalrd (Ubuntu Xenial)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1895160
Title:
Backport finalrd 6 to xenial and up
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