[clock] sync os time to CMOS before rebooting (sonic-net#465)

So if CMOS clock has drifted, we fix it at reboot time after syncing with NTP. Signed-off-by: Ying Xie <[email protected]>
SONIC-DEV · Feb 19, 2019 · 5b62831 · 5b62831
1 parent 8b6aea1
commit 5b62831
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diff --git a/scripts/fast-reboot b/scripts/fast-reboot
@@ -360,6 +360,11 @@ sync
 sleep 1
 sync
 
+# sync the current system time to CMOS
+if [ -x /sbin/hwclock ]; then
+    /sbin/hwclock -w || /bin/true
+fi
+
 # Reboot: explicity call Linux native reboot under sbin
 debug "Rebooting with ${REBOOT_METHOD} to ${NEXT_SONIC_IMAGE} ..."
 exec ${REBOOT_METHOD}

diff --git a/scripts/reboot b/scripts/reboot
@@ -48,6 +48,11 @@ echo "User issued 'reboot' command [User: ${REBOOT_USER}, Time: ${REBOOT_TIME}]"
 sync
 sleep 3
 
+# sync the current system time to CMOS
+if [ -x /sbin/hwclock ]; then
+    /sbin/hwclock -w || /bin/true
+fi
+
 if [ -x ${DEVPATH}/${PLATFORM}/${PLAT_REBOOT} ]; then
     echo "Rebooting with platform ${PLATFORM} specific tool ..."
     exec ${DEVPATH}/${PLATFORM}/${PLAT_REBOOT} $@