Tag Volumes from Instance

tagvolumesfrominstance.sh

#!/bin/bash

volids=( $(aws ec2 describe-volumes --output text --filters "Name=attachment.status,Values=attached" --query 'Volumes[?!not_null(Tags[?Key == `rs:project`].Value)] | [].[VolumeId]') )

for volid in ${volids[@]}; do
    echo "Getting instance for volume ${volid}"
    instanceid=$(aws ec2 describe-volumes --output text --volume-ids ${volid} --query 'Volumes[].Attachments[].InstanceId')
    echo "Getting rs:* tags for instance ${instanceid}"
    tags=$(aws ec2 describe-instances --instance-ids ${instanceid} --query 'Reservations[].Instances[].Tags[?starts_with(Key, `rs:`)][]')
    if [ "${tags}" != "" ]; then
        aws ec2 create-tags $DRYRUN --resources ${volid} --tags ''"${tags}"''
    else
        echo "Instance ${instanceid} does not have rs:* tags to copy to volume ${volid}"
    fi
done