公开(公告)号：US20130111150A1

公开(公告)日：2013-05-02

申请号：US13708670

申请日：2012-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yafei Zhao ,  Ruoxing Dai ,  Xiaowei Chu

IPC: G06F12/08

CPC classification number: G06F12/0891 ,  G06F12/0808 ,  G06F12/0828 ,  G06F12/0833

Abstract: A method for preventing deadlock of a node controller includes receiving, by an NC of a current node, a request message from any node, and writing the request message into a processing queue; performing invalidation processing on the cache data block that includes the system address and is cached on the other node, so that the NC directly returns, upon receiving a first interception message transferred by an HA, a feedback message to the HA, thereby avoiding that the first interception message is written into the processing queue and is blocked by the request message; and the feedback message is used for indicating that the system address cached on the other node is invalid; and transferring, by the NC, to the HA, the request message written into the processing queue.

Abstract translation: 一种防止节点控制器死锁的方法包括：从当前节点的NC接收来自任何节点的请求消息，并将请求消息写入处理队列; 对包括系统地址的高速缓存数据块执行无效处理，并且缓存在另一个节点上，使得NC在接收到由HA传送的第一个拦截消息时直接返回到HA的反馈消息，从而避免了 第一个拦截消息被写入处理队列并被请求消息阻塞; 反馈消息用于指示缓存在另一个节点上的系统地址无效; 并由NC向HA转发写入处理队列的请求消息。

公开(公告)号：US11360705B2

公开(公告)日：2022-06-14

申请号：US16746241

申请日：2020-01-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaowei Chu ,  Xianming Zhao ,  Hao Chen

IPC: G06F3/06

Abstract: A method for executing a hard disk operation command, a hard disk, and a storage medium. After an operation command is received, a target LUN in an idle state is determined; a target physical block that is to be accessed when the operation command is executed is determined from the target LUN; the operation command is stored in a processing waiting queue corresponding to a flash memory chip to which the target physical block belongs; and a working state of the target LUN is changed to a non-idle state when a quantity of operation commands that wait to be processed in a processing waiting queue respectively corresponding to each flash memory chip in the target LUN is greater than a preset threshold.