resource::DiskImpl* disk_ = nullptr;
sg_size_t size_ = 0;
s4u::Io::OpType type_ = s4u::Io::OpType::READ;
sg_size_t performed_ioops_ = 0;
resource::DiskImpl* disk_ = nullptr;
sg_size_t size_ = 0;
s4u::Io::OpType type_ = s4u::Io::OpType::READ;
sg_size_t performed_ioops_ = 0;