Mount nvme disk in aws

mount-ephemeral.sh

#!/usr/bin/env bash

MOUNT="/media"
EPHEMERAL_DISK=$(sudo nvme list | grep 'Amazon EC2 NVMe Instance Storage' | awk '{ print $1 }')
# Check if the mount point exists in /proc/mounts
if grep -qs ${MOUNT} /proc/mounts; then
    echo "It's mounted."
else
    # Check if the block device exists and is not formatted as ext4
    if [ -b ${EPHEMERAL_DISK} ] && ! blkid ${EPHEMERAL_DISK} | grep -qs ext4; then
        echo "It's not mounted and not formatted, formatting..."
        # Format the block device as ext4
        if mkfs.ext4 -E nodiscard ${EPHEMERAL_DISK}; then
            echo "Formatting ${EPHEMERAL_DISK} success!"
        else
            echo "Failed to format ${EPHEMERAL_DISK}."
            exit 1
        fi
    fi
    
    # Attempt to mount the block device to the specified mount point
    echo "It's not mounted, trying to mount..."
    if mkdir -p ${MOUNT} && mount -t ext4 ${EPHEMERAL_DISK} ${MOUNT}; then
        echo "Mount ${MOUNT} success!"
        
        # Unmount objectivefs and remount everything to ensure correct order
        echo "Unmounting /videosync-events to ensure correct mount order..."
        umount /videosync-events 2>/dev/null || true
        echo "Remounting all filesystems..."
        mount -a
    else
        echo "Something went wrong with the mount - ${EPHEMERAL_DISK}"
        exit 1
    fi
fi