Try a simple local stat instead.

src/filecache.c

@@ -164,9 +164,14 @@ struct curl_slist* enhanced_logging(struct curl_slist *slist, int log_level, int
 // creates a new cache file
 static void new_cache_file(const char *cache_path, char *cache_file_path, fd_t *fd, GError **gerr) {
     char entropy[CACHE_FILE_ENTROPY + 1];
+    const float samplerate = 1.0; // REMOVE after testing
 
     BUMP(filecache_cache_file);
 
+    // For testing purposes ONLY, remove before merging!
+    stats_counter("unexpected-not-found", 1, samplerate);
+    log_print(LOG_WARNING, SECTION_FUSEDAV_STAT, "Encountered an unexpected 404/410");
+
     for (size_t pos = 0; pos <= CACHE_FILE_ENTROPY; ++pos) {
         entropy[pos] = 65 + rand() % 26;
     }
@@ -614,9 +619,6 @@ static void get_fresh_fd(filecache_t *cache,
         bool unlink_old = false;
         const float samplerate = 1.0; // always sample stat
 
-        // For testing purposes ONLY, remove before merging!
-        BUMP(conflicting_404);
-
         if (pdata == NULL) {
             *pdatap = calloc(1, sizeof(struct filecache_pdata));
             pdata = *pdatap;
@@ -755,10 +757,13 @@ static void get_fresh_fd(filecache_t *cache,
          *  Not sure how to remediate without doing way more work and
          *  introducing way more problems than the fix will fix.
          */
+        const float samplerate = 1.0; // always sample stat
+        stats_counter("unexpected-not-found", 1, samplerate);
+        log_print(LOG_WARNING, SECTION_FUSEDAV_STAT, "Encountered an unexpected 404/410: Repsonse code: %u: ", response_code);
+
         struct stat_cache_value *value;
         g_set_error(gerr, filecache_quark(), ENOENT, "%s: File %s expected to exist returns %ld.", 
                 funcname, path, response_code);
-        BUMP(conflicting_404);
         /* we get a 404 because the stat_cache returned that the file existed, but it
          * was not on the server. Deleting it from the stat_cache makes the stat_cache
          * consistent, so the next access to the file will be handled correctly.

src/stats.c

@@ -300,11 +300,6 @@ void dump_stats(bool log, const char *cache_path) {
         print_line(log, fd, LOG_NOTICE, SECTION_FILECACHE_OUTPUT, str);
     }
 
-    snprintf(str, MAX_LINE_LEN, "Notable Events:");
-    print_line(log, fd, LOG_NOTICE, SECTION_FUSEDAV_OUTPUT, str);
-    snprintf(str, MAX_LINE_LEN, "  conflicting 404:  %u", FETCH(conflicting_404));
-    print_line(log, fd, LOG_NOTICE, SECTION_FUSEDAV_OUTPUT, str);
-
     snprintf(str, MAX_LINE_LEN, "Stat Cache Operations:");
     print_line(log, fd, LOG_NOTICE, SECTION_STATCACHE_OUTPUT, str);
     snprintf(str, MAX_LINE_LEN, "  local_gen:        %u", FETCH(statcache_local_gen));

src/stats.h

@@ -46,8 +46,6 @@ struct statistics {
     unsigned propfind_progressive_cache;
     unsigned propfind_complete_cache;
 
-    unsigned conflicting_404;
-
     unsigned filecache_cache_file;
     unsigned filecache_pdata_set;
     unsigned filecache_create_file;