From f1b6d6046cf1033f20eba09fb177f0e5c1e8ca90 Mon Sep 17 00:00:00 2001
From: "W. Lee Pang" <wleepang@gmail.com>
Date: Fri, 10 Jul 2020 21:39:31 -0700
Subject: [PATCH] add creation timestamp tag

---
 bin/create-ebs-volume | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bin/create-ebs-volume b/bin/create-ebs-volume
index 3c73a1f..8df59b9 100755
--- a/bin/create-ebs-volume
+++ b/bin/create-ebs-volume
@@ -208,12 +208,13 @@ function create_and_attach_volume() {
     local volume_opts="--size $SIZE --volume-type $TYPE"
     if [ "$TYPE" == "io1" ]; then volume_opts="$volume_opts --iops $IOPS"; fi
     if [ "$ENCRYPTED" == "1" ]; then volume_opts="$volume_opts --encrypted"; fi
+    local timestamp=$(date "+%F %T UTC%z")  # YYYY-mm-dd HH:MM:SS UTC+0000
     local volume=$(\
         aws ec2 create-volume \
             --region $region \
             --availability-zone $availability_zone \
             $volume_opts \
-            --tag-specification "ResourceType=volume,Tags=[{Key=source-instance,Value=$instance_id}]" \
+            --tag-specification "ResourceType=volume,Tags=[{Key=source-instance,Value=$instance_id},{Key=amazon-ebs-autoscale-creation-time,Value=$timestamp}]" \
         2> $tmpfile
     )
     local volume_id=`echo $volume | jq -r '.VolumeId'`