Catch the none existent shard case and just skip that

diff --git a/modules/lmdbbackend/lmdbbackend.cc b/modules/lmdbbackend/lmdbbackend.cc
index adccc89d351d73a1b9389a4587f273d30c9207f9..71ba3b7b88ae530b86105ca5cd1889083e5f75ad 100644 (file)
--- a/modules/lmdbbackend/lmdbbackend.cc
+++ b/modules/lmdbbackend/lmdbbackend.cc
@@ -547,6 +547,10 @@ bool LMDBBackend::upgradeToSchemav3()
   for(auto i = 0; i < d_shards; i++) {
     string filename = getArg("filename")+"-"+std::to_string(i);
     if (rename(filename.c_str(), (filename+"-old").c_str()) < 0) {
+        if (errno == ENOENT) {
+            // apparently this shard doesn't exist yet, moving on
+            continue;
+        }
         unixDie("Rename failed during LMDB upgrade");
     }