file-share/terraform/dlm.tf

resource "aws_dlm_lifecycle_policy" "nightly" {
  description        = "Nightly EBS snapshots for file share"
  execution_role_arn = aws_iam_role.dlm.arn
  state              = "ENABLED"

  policy_details {
    resource_types = ["VOLUME"]

    target_tags = {
      "file-share-backup" = "true"
    }

    schedule {
      name = "file-share-nightly"

      create_rule {
        interval      = 24
        interval_unit = "HOURS"
        times         = ["06:00"]
      }

      retain_rule {
        count = 30
      }

      copy_tags = true
    }
  }
}