[warm reboot] provide option to reboot with "kexec -e" (#406)

* [warm reboot] provide option to reboot with "kexec -e" Signed-off-by: Ying Xie <[email protected]> * add the new options to parsing list
sonic-net · Dec 11, 2018 · 28fd82e · 28fd82e
1 parent 2a7c301
commit 28fd82e
Showing 1 changed file with 12 additions and 4 deletions.
diff --git a/scripts/fast-reboot b/scripts/fast-reboot
@@ -9,6 +9,7 @@ REBOOT_SCRIPT_NAME=$(basename $0)
 REBOOT_TYPE="${REBOOT_SCRIPT_NAME}"
 VERBOSE=no
 FORCE=no
+REBOOT_METHOD="/sbin/reboot"
 
 # Check root privileges
 if [[ "$EUID" -ne 0 ]]
@@ -31,13 +32,15 @@ function showHelpAndExit()
     echo "    -h -? : get this help"
     echo "    -v    : turn on verbose"
     echo "    -f    : force execution"
+    echo "    -r    : reboot with /sbin/reboot [default]"
+    echo "    -k    : reboot with /sbin/kexec -e"
 
     exit 0
 }
 
 function parseOptions()
 {
-    while getopts "vfh?" opt; do
+    while getopts "vfh?rk" opt; do
         case ${opt} in
             h )
                 showHelpAndExit
@@ -51,6 +54,12 @@ function parseOptions()
             f )
                 FORCE=yes
                 ;;
+            r )
+                REBOOT_METHOD="/sbin/reboot"
+                ;;
+            k )
+                REBOOT_METHOD="/sbin/kexec -e"
+                ;;
         esac
     done
 }
@@ -371,10 +380,9 @@ sync
 sleep 1
 sync
 
-debug "Rebooting ..."
 # Reboot: explicity call Linux native reboot under sbin
-echo "Rebooting to $NEXT_SONIC_IMAGE..."
-exec /sbin/reboot
+debug "Rebooting with ${REBOOT_METHOD} to ${NEXT_SONIC_IMAGE} ..."
+exec ${REBOOT_METHOD}
 
 # Should never reach here
 echo "${REBOOT_TYPE} failed!" >&2