From 52b14d91f60c0ec5ea969e9e2315bec6d7425bd0 Mon Sep 17 00:00:00 2001
From: ibizaman <ibizaman@tiserbox.com>
Date: Tue, 26 May 2026 22:37:06 +0200
Subject: [PATCH] zfs: handle dubplicate dataset names

---
 modules/blocks/zfs.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/modules/blocks/zfs.nix b/modules/blocks/zfs.nix
index 4e7f5d9..db2ca68 100644
--- a/modules/blocks/zfs.nix
+++ b/modules/blocks/zfs.nix
@@ -249,7 +249,9 @@ in
         let
           recursiveFlag = lib.optionalString cfg.snapshotBeforeActivation.recursive "-r";
         in
-        lib.concatMapStringsSep "\n" (ds: "zfs snapshot ${recursiveFlag} ${ds}@\"$name\"") datasets
+        lib.concatMapStringsSep "\n" (ds: "zfs snapshot ${recursiveFlag} ${ds}@\"$name\"") (
+          lib.uniqueStrings datasets
+        )
       )
     );
   };