tree cad9996bcc2d51d2373ecd90ea7ca2bcb6c51ecb
parent 62638200712faa2b99e1dc6a4daae299469e01b5
author Andrew Geissler <geissonator@yahoo.com> 1635351175 -0500
committer Andrew Geissler <geissonator@yahoo.com> 1635355525 -0500

op-continue-mpreboot: ensure it runs after start_host

During an mpreboot, the obmc-host-startmin@.target is executed. Within
this target there are two services that can start the boot. One is the
standard start_host@.service which is used for a normal boot. The
op-continue-mpreboot@.service is used when it is a mpreboot.

The decision on which one runs and which one doesn't is based on the
/run/openbmc/mpreboot@%i file. The race condition we have is that both
services start at the same time from a systemd perspective. If the
mpreboot service happens to run first, it removes the mpreboot@%i file.
Then when the start_host service starts, it does not see the file so it
also runs! This is not good. To fix this, ensure the start_host service
runs first if it is started at the same time as the mpreboot service.

Tested:
- Verified start_host ran first and was skipped in mpreboot
Oct 27 22:46:58 openbmc systemd[1]: Condition check resulted in Start host0 SBE being skipped.
Oct 27 22:46:58 openbmc systemd[1]: Starting Continue mp reboot on host0...

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Ifb995d3d1ac66314db5a171446097f88ead277c4