From 5b18d6e98bd65e1e24334590d479a0fb9243ebfc Mon Sep 17 00:00:00 2001
From: dawnbeauty <18810562248@163.com>
Date: Fri, 10 Jan 2020 16:17:34 +0800
Subject: [PATCH] [fast-reboot] save fast-reboot state into the db

Fixes Azure/sonic-buildimage#4006

1. save fast-reboot state into the db(aligned with Azure/sonic-buildimage#3741)
2. `sonic-buildimage/files/scripts/syncd.sh` could detect the FAST reboot type by the saved fast-reboot state, and request syncd to fast shutdown.
---
 scripts/fast-reboot | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/fast-reboot b/scripts/fast-reboot
index c331407717..cd37932a56 100755
--- a/scripts/fast-reboot
+++ b/scripts/fast-reboot
@@ -96,6 +96,8 @@ function clear_fast_boot()
 {
     debug "${REBOOT_TYPE} failure ($?) cleanup ..."
 
+    /usr/bin/redis-cli -n 6 del "FAST_REBOOT|system" > /dev/null || /bin/true
+
     /sbin/kexec -u || /bin/true
 
     teardown_control_plane_assistant
@@ -307,6 +309,7 @@ BOOT_TYPE_ARG="cold"
 case "$REBOOT_TYPE" in
     "fast-reboot")
         BOOT_TYPE_ARG=$REBOOT_TYPE
+        /usr/bin/redis-cli -n 6 set "FAST_REBOOT|system" "1" > /dev/null
         trap clear_fast_boot EXIT HUP INT QUIT TERM KILL ABRT ALRM
         ;;
     "warm-reboot")