Ceph » CephFS

class C_SaferCond : public Context {
  Mutex lock;    ///< Mutex to take
  Cond cond;     ///< Cond to signal
  bool done;     ///< true after finish() has been called
  int rval;      ///< return value
public:
  C_SaferCond() : lock("C_SaferCond"), done(false), rval(0) {}
  void finish(int r) override { complete(r); }

  /// We overload complete in order to not delete the context
  void complete(int r) override {
    Mutex::Locker l(lock);
    done = true;
    rval = r;
    cond.Signal();
  }

  /// Returns rval once the Context is called
  int wait() {
    Mutex::Locker l(lock);
    while (!done)
      cond.Wait(lock);
    return rval;
  }
};

I don't understand why it waits forever. the variable 'done' is true if scrub completes

Hrm, I missed that bit of logic. Yes, I don't know why it waits forever either.