[fix] curvefs: mds: createfs error

Signed-off-by: swj <1186093704@qq.com>

Author: 201341

curvefs/src/mds/fs_manager.cpp

@@ -795,15 +795,22 @@ int FsManager::IsExactlySameOrCreateUnComplete(const std::string& fsName,
         return google::protobuf::util::MessageDifferencer::Equals(lhs, rhs);
     };
 
-    auto checkFsInfo = [fsType, volumeInfoComparator](const FsDetail& lhs,
+    auto s3InfoComparator = [](common::S3Info lhs, common::S3Info rhs) {
+        // for compatible with old clients
+        lhs.clear_objectprefix();
+        rhs.clear_objectprefix();
+        return google::protobuf::util::MessageDifferencer::Equals(lhs, rhs);
+    };
+
+    auto checkFsInfo = [fsType, volumeInfoComparator, s3InfoComparator](const FsDetail& lhs,
                                                       const FsDetail& rhs) {
         switch (fsType) {
             case curvefs::common::FSType::TYPE_S3:
-                return MessageDifferencer::Equals(lhs.s3info(), rhs.s3info());
+                return s3InfoComparator(lhs.s3info(), rhs.s3info());
             case curvefs::common::FSType::TYPE_VOLUME:
                 return volumeInfoComparator(lhs.volume(), rhs.volume());
             case curvefs::common::FSType::TYPE_HYBRID:
-                return MessageDifferencer::Equals(lhs.s3info(), rhs.s3info()) &&
+                return s3InfoComparator(lhs.s3info(), rhs.s3info()) &&
                        volumeInfoComparator(lhs.volume(), rhs.volume());
         }