aws_ebs_volume.tf

#creation of ebs volume
resource "aws_ebs_volume" "myvol" {
  depends_on =[aws_instance.webos]
  availability_zone = aws_instance.webos.availability_zone
  size              = 1

  tags = {
    Name = "myvolume"
  }
}
resource "aws_volume_attachment" "ebs_att" {
  depends_on = [aws_ebs_volume.myvol]
  device_name = "/dev/sdd"
  volume_id   = aws_ebs_volume.myvol.id
  instance_id = aws_instance.webos.id
  force_detach = true
}

/////////////////////////////////////////////////////
#create snapshot of aws ebs volume
resource "aws_ebs_snapshot" "snapshot" {
  depends_on = [null_resource.nl1] 
  volume_id  = "${aws_ebs_volume.myvol.id}"

  tags = {
    Name = "terraform ebs snap"
  }
}
output "snapshot_id" {
	value = aws_ebs_snapshot.snapshot.id
}