# nix

systemd.mounts = map (disk: rec {
      what = "/dev/${disk.name}";
      where = "/kafka/data/${disk.name}";
      type = "ext4";
      after = [ "ensure-formatted-dev-${disk.name}.service" ];
      before = [ "apache-kafka.service" ];
      requires = after;
      requiredBy = before;
    }) extraDisks;

# resulting unit:
[atu@kafka-p202:~]$ systemctl cat kafka-data-sde.mount
# /nix/store/g36k0qg8s9703s3krda5377h1wjhn8xv-unit-kafka-data-sde.mount/kafka-data-sde.mount
[Unit]
After=ensure-formatted-dev-sde.service
Before=apache-kafka.service
Requires=ensure-formatted-dev-sde.service

[Mount]
Type=ext4
What=/dev/sde
Where=/kafka/data/sde