From baa54e92f7a22fea951d1f70bcc9d65324414595 Mon Sep 17 00:00:00 2001
From: Vaibhav Hemant Dixit <vaibhav.dixit@microsoft.com>
Date: Mon, 20 Sep 2021 18:18:46 +0000
Subject: [PATCH] Save DB dump after warm/fast reboot

---
 files/build_templates/docker_image_ctl.j2 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/files/build_templates/docker_image_ctl.j2 b/files/build_templates/docker_image_ctl.j2
index 541f52656b07..99192b4458bd 100644
--- a/files/build_templates/docker_image_ctl.j2
+++ b/files/build_templates/docker_image_ctl.j2
@@ -153,7 +153,8 @@ function postStartAction()
           sleep 1;
         done
         if [[ ("$BOOT_TYPE" == "warm" || "$BOOT_TYPE" == "fastfast") && -f $WARM_DIR/dump.rdb ]]; then
-            rm -f $WARM_DIR/dump.rdb
+            # retain the dump file from last boot for debugging purposes
+            mv $WARM_DIR/dump.rdb $WARM_DIR/dump.rdb.old
         else
             # If there is a config_db.json dump file, load it.
             if [ -r /etc/sonic/config_db$DEV.json ]; then