I'm experimenting with a new setup, using vmVariantWithDisko to test things out. I've defined a few btrfs subvolumes, one of them being /home. It seems that the user creation script is running before the subvolumes are being mounted, which means my user has no home for example.

Is there something I'm missing / misconfigured?

Mic92: I adjusted by btrfs volume definitions to more closely match what Lily Foster had, mainly just adding a root mountpoint of /vol/root and removing mountpoint definitions in my subvolumes since their paths matched anyway.

Now neededForBoot seems to have the desired effect and /home is being mounted before the user activation script is trying to do anything.

    mdadm = {
      raid0 = {
        type = "mdadm";
        level = 0;
        content = {
          type = "luks";
          name = "crypted-root";
          settings = {
            allowDiscards = true;
          };
          content = {
            type = "btrfs";
            mountpoint = "/vol/root";
            subvolumes = {
              "/root" = {
                mountpoint = "/";
              };
              "/home" = {
                mountOptions = [
                  "compress=zstd"
                ];
              };
              "/nix" = {
                mountOptions = [
                  "compress=zstd"
                  "noatime"
                ];
              };
              "/var/log" = {
                mountOptions = [
                  "compress=zstd"
                  "nodatacow"
                ];
              };
            };
          };
        };
      };
      raid5 = {
        type = "mdadm";
        level = 5;
        content = {
          type = "luks";
          name = "crypted-archive";
          content = {
            type = "btrfs";
            mountpoint = "/vol/archive";
            subvolumes = {
              "/archive/media" = {
                mountOptions = [
                  "compress=zstd"
                ];
              };
              "/archive/backups" = {
                mountOptions = [
                  "compress=zstd"
                ];
              };
            };
          };
        };
      };
    };
  };

  # ensure /home is mounted before home directories are created
  fileSystems."/home".neededForBoot = true;

This is what it looked like before

    mdadm = {
      raid0 = {
        type = "mdadm";
        level = 0;
        content = {
          type = "luks";
          name = "crypted-root";
          settings = {
            allowDiscards = true;
          };
          content = {
            type = "btrfs";
            extraArgs = [ "-f" ];
            subvolumes = {
              "/root" = {
                mountpoint = "/";
              };
              "/home" = {
                mountpoint = "/home";
                mountOptions = [
                  "compress=zstd"
                ];
              };
              "/nix" = {
                mountpoint = "/nix";
                mountOptions = [
                  "compress=zstd"
                  "noatime"
                ];
              };
              "/var/log" = {
                mountpoint = "/var/log";
                mountOptions = [
                  "compress=zstd"
                  "nodatacow"
                ];
              };
            };
          };
        };
      };
      raid5 = {
        type = "mdadm";
        level = 5;
        content = {
          type = "luks";
          name = "crypted-archive";
          content = {
            type = "btrfs";
            extraArgs = [ "-f" ];
            subvolumes = {
              "/archive" = {
                mountpoint = "/archive";
                mountOptions = [
                  "compress=zstd"
                  "noatime"
                ];
              };
              "/archive/media" = {
                mountpoint = "/archive/media";
                mountOptions = [
                  "compress=zstd"
                  "noatime"
                ];
              };
              "/archive/backups" = {
                mountpoint = "/archive/backups";
                mountOptions = [
                  "compress=zstd"
                  "noatime"
                ];
              };
            };
          };
        };
      };
    };
  };

Mic92: I adjusted my btrfs volume definitions to more closely match what Lily Foster had, mainly just adding a root mountpoint of /vol/root and removing mountpoint definitions in my subvolumes since their paths matched anyway.

Now neededForBoot seems to have the desired effect and /home is being mounted before the user activation script is trying to do anything.

    mdadm = {
      raid0 = {
        type = "mdadm";
        level = 0;
        content = {
          type = "luks";
          name = "crypted-root";
          settings = {
            allowDiscards = true;
          };
          content = {
            type = "btrfs";
            mountpoint = "/vol/root";
            subvolumes = {
              "/root" = {
                mountpoint = "/";
              };
              "/home" = {
                mountOptions = [
                  "compress=zstd"
                ];
              };
              "/nix" = {
                mountOptions = [
                  "compress=zstd"
                  "noatime"
                ];
              };
              "/var/log" = {
                mountOptions = [
                  "compress=zstd"
                  "nodatacow"
                ];
              };
            };
          };
        };
      };
      raid5 = {
        type = "mdadm";
        level = 5;
        content = {
          type = "luks";
          name = "crypted-archive";
          content = {
            type = "btrfs";
            mountpoint = "/vol/archive";
            subvolumes = {
              "/archive/media" = {
                mountOptions = [
                  "compress=zstd"
                ];
              };
              "/archive/backups" = {
                mountOptions = [
                  "compress=zstd"
                ];
              };
            };
          };
        };
      };
    };
  };

  # ensure /home is mounted before home directories are created
  fileSystems."/home".neededForBoot = true;