diff --git a/include/chia/copy.h b/include/chia/copy.h
index d5054b4a..d4b9dee6 100644
--- a/include/chia/copy.h
+++ b/include/chia/copy.h
@@ -17,10 +17,26 @@
 #include <cstdio>
 #include <cstdint>
 
+#ifdef __linux__
+	#include <filesystem>
+	namespace fs = std::filesystem;
+#endif
 
 inline
-uint64_t copy_file(const std::string& src_path, const std::string& dst_path)
+uint64_t copy_file(const std::string& src_path, const std::string& dst_path, const std::string& dst2_path)
 {
+	#ifdef __linux__
+		const uint64_t plotsize = 109000000000 // rough plot size placeholder, later pass real size through
+		fs::space_info tmp = fs::space(dst_path);
+		if(tmp.available < plotsize) {
+			fs::space_info tmp2 = fs::space(dst_path2);
+			if(tmp2.available < plotsize) {
+				throw std::runtime_error("All destinations have run out of disk space");
+			}
+			dst_path = dst2_path;
+			throw std::runtime_error("Destination does not have enough available disk space left, switching to alternate destination");
+		}
+	#endif
 	FILE* src = fopen(src_path.c_str(), "rb");
 	if(!src) {
 		throw std::runtime_error("fopen() failed");
@@ -49,19 +65,21 @@ uint64_t copy_file(const std::string& src_path, const std::string& dst_path)
 }
 
 inline
-uint64_t final_copy(const std::string& src_path, const std::string& dst_path)
+uint64_t final_copy(const std::string& src_path, const std::string& dst_path, const std::string& dst2_path)
 {
 	if(src_path == dst_path) {
 		return 0;
 	}
 	const std::string tmp_dst_path = dst_path + ".tmp";
+	const std::string tmp_dst2_path = dst2_path + ".tmp";
 	uint64_t total_bytes = 0;
 	if(rename(src_path.c_str(), tmp_dst_path.c_str())) {
 		// try manual copy
-		total_bytes = copy_file(src_path, tmp_dst_path);
+		total_bytes = copy_file(src_path, tmp_dst_path, tmp_dst2_path);
 	}
 	remove(src_path.c_str());
 	rename(tmp_dst_path.c_str(), dst_path.c_str());
+	rename(tmp_dst2_path.c_str(), dst2_path.c_str());
 	return total_bytes;
 }