[Backport fc-26.05-dev] raid_md check: ensure dm-raid module is loaded

changelog.d/20260306_145354_PL-135206-dm-raid_scriv.md

@@ -0,0 +1,29 @@
+<!--
+
+A new changelog entry.
+
+Delete placeholder items that do not apply. Empty sections will be removed
+automatically during release.
+
+Leave the XX.XX as is: this is a placeholder and will be automatically filled
+correctly during the release and helps when backporting over multiple platform
+branches.
+
+-->
+
+### Impact
+
+<!-- Impact means "when this change is rolled out, there
+     might be interruptions/downtimes/required actions/... that
+     IMPACT THE RUNNING APPLICATION NEGATIVELY.
+
+     Having new features or changed is not an "impact". That's what
+     the main changelog (see below) is for.
+     -->
+
+- A bullet item for the Impact category.
+
+
+### NixOS XX.XX platform
+
+- flyingcircus.raid: ensure dm-raid module is loaded (PL-135206)

nixos/services/raid/default.nix

@@ -28,11 +28,12 @@
       command = "${pkgs.check_md_raid}/bin/check_md_raid";
     };
 
-    # MegaRAID
-
     boot.initrd.kernelModules = [
+      # MegaRAID
       "megaraid_sas"
       "mpt3sas"
+      # md_raid
+      "dm-raid"
     ];
 
     environment.systemPackages = with pkgs; [