FredsAWSStandaloneWithSmartStore/4.images/ephemeral_init/initialize_nvme_storage.sh

#! /bin/bash
# This needs to be called every boot, before Splunk starts.
if [ ! -b /dev/md0 ]; then
  sudo rm -f /etc/mdadm.conf 2> /dev/null
  DEVICES=$(ls -1 /dev/nvme*n1)
  NUM=$(ls -1 /dev/nvme*n1 | wc -l)
  sudo mdadm --create --force --verbose /dev/md0 --level=0 --name=SMARTSTORE_CACHE --raid-devices=${NUM} ${DEVICES}
  sudo mkfs -t xfs /dev/md0
  sudo mkdir -p /opt/splunk/var/lib/smartstore_cache 2> /dev/null
  sudo chown -R splunk:splunk /opt/splunk 2> /dev/null
  sudo mdadm --verbose --detail --scan | sudo tee -a /etc/mdadm.conf
fi
sudo mount /dev/md0 /opt/splunk/var/lib/smartstore_cache
# Fix permissions each boot:
sudo chown -R splunk:splunk /opt/splunk
sudo find /opt/splunk -type d -exec chmod 755 {} \;
sudo find /opt/splunk -type f -exec chmod g+r {} \;