[OE-core] [PATCH 1/3] dpkg-configure: do not reload daemon configuration

[Max Krummenacher]

In case a systemd service disables itself while init is still in its
boot sequence the reloading of the service files can be problematic.
In that case: It seems that systemd can loose the state of .device units,
and some services depend on such units (namely serial consoles such as
serial-getty at ttyS0.service). As a result no getty is spawned on the
affected serial tty.
After a power-cycle the second boot (which does not disable services)
succeeds.

The following sequence shows this problem:

| Jan 09 16:36:28 apalis-t30 systemctl[162]: Removed /etc/systemd/system/sysinit.target.wants/run-postinsts.service.
| Jan 09 16:36:28 apalis-t30 systemd[1]: Reloading.
|    ...
|    And then the failing one:
| Feb 22 15:33:15 apalis-t30 systemd[1]: dev-ttyS0.device: Job dev-ttyS0.device/start timed out.
| Feb 22 15:33:15 apalis-t30 systemd[1]: Timed out waiting for device dev-ttyS0.device.
| Feb 22 15:33:15 apalis-t30 systemd[1]: Dependency failed for Serial Getty on ttyS0.
| Feb 22 15:33:15 apalis-t30 systemd[1]: serial-getty at ttyS0.service: Job serial-getty at ttyS0.service/start failed with result 'dependency'.
| Feb 22 15:33:15 apalis-t30 systemd[1]: dev-ttyS0.device: Job dev-ttyS0.device/start failed with result 'timeout'.
| Feb 22 15:33:15 apalis-t30 systemd[1]: Reached target Login Prompts.

(the time has been updated between this two events, but that does not
influence the issue)

Using --no-reload in the service file avoids the "Reloading." message
above and seems to not cause such issues anymore.

Signed-off-by: Stefan Agner <stefan.agner at toradex.com>
Signed-off-by: Max Krummenacher <max.krummenacher at toradex.com>
---
 meta/recipes-devtools/dpkg/dpkg/dpkg-configure.service | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/recipes-devtools/dpkg/dpkg/dpkg-configure.service b/meta/recipes-devtools/dpkg/dpkg/dpkg-configure.service
index f0b0789..9a248cc 100644
--- a/meta/recipes-devtools/dpkg/dpkg/dpkg-configure.service
+++ b/meta/recipes-devtools/dpkg/dpkg/dpkg-configure.service
@@ -8,7 +8,7 @@ Before=sysinit.target
 Type=oneshot
 EnvironmentFile=- at SYSCONFDIR@/default/postinst
 ExecStart=- at BASE_BINDIR@/sh -c " if [ $POSTINST_LOGGING = '1' ]; then @BINDIR@/dpkg --configure -a > $LOGFILE 2>&1; else @BINDIR@/dpkg --configure -a; fi"
-ExecStartPost=@BASE_BINDIR@/systemctl disable dpkg-configure.service
+ExecStartPost=@BASE_BINDIR@/systemctl --no-reload disable dpkg-configure.service
 StandardOutput=syslog
 RemainAfterExit=No
 
-- 
2.9.3