Mount NVMe SSDs in AWS EC2 instances

ec2-nvme-count.txt

Mount Separately
----------------
# mount nvme SSDs to /dataN when available for specific instance types
# There are only 4 nvme slots in r5 instances. /dev/nvme0n1 is root EBS volume.
for i in $(seq 1 4); do
  if [ -e "/dev/nvme${i}n1" ]
  then
    echo "Mounting /dev/nvme${i}n1 to /data${i}"
    sudo mkfs.ext4 -E nodiscard /dev/nvme${i}n1
    sudo mkdir -p /data${i}
    sudo mount -o discard /dev/nvme${i}n1 "/data${i}"
    lsblk
  fi
done

Mount as LVM
------------
for i in $(seq 1 4); do
  if [ -e /dev/nvme${i}n1 ]
  then
    x+=" /dev/nvme${i}n1"
  fi
done

yes | sudo pvcreate $x
yes | sudo vgcreate nvmevg $x
yes | sudo lvcreate -l 100%FREE nvmevg -n nvmelv
yes | sudo mkfs.ext4 /dev/nvmevg/nvmelv
sudo mkdir -p /data
sudo mount /dev/nvmevg/nvmelv /data