Method finish

src/mds/Server.cc:3787–3812

  C_MDS_TryFindInode(Server *s, const MDRequestRef& r, MDCache *m, inodeno_t i) :
    ServerContext(s), mdr(r), mdcache(m), ino(i) {}
  void finish(int r) override {
    if (r == -ESTALE) { // :( find_ino_peers failed
      /*
       * There has one case that when the MDS crashes and the
       * openfiletable journal couldn't be flushed and then
       * the replacing MDS is possibly won't load some already
       * opened CInodes into the MDCache. And if the clients
       * will retry some requests after reconnected, the MDS
       * will return -ESTALE after failing to find the ino in
       * all active peers.
       *
       * As a workaround users can run `ls -R ${mountpoint}`
       * to list all the sub-files or sub-direcotries from the
       * mountpoint.
       *
       * We need try to open the ino and try it again.
       */
      CInode *in = mdcache->get_inode(ino);
      if (in && in->state_test(CInode::STATE_PURGING))
        server->respond_to_request(mdr, r);
      else
        mdcache->open_ino(ino, (int64_t)-1, new C_MDS_TryOpenInode(server, mdr, ino));
    } else {
      server->dispatch_client_request(mdr);
    }
  }
};

CInode* Server::rdlock_path_pin_ref(const MDRequestRef& mdr,