| 摘要 |
<p>A method for preventing deadlock of a node controller includes: receiving, by an NC of a current node, a request message sent by any node, and writing the request message into a processing queue, where the request message is used for requesting a system address; monitoring, by the NC, whether a cache data block including the system address is cached on another node, and if yes, performing invalidation processing on the cache data block that includes the system address and is cached on the another 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, where the first interception message is used for intercepting whether the system address is cached on the another node; and the feedback message is used for indicating that the system address cached on the another node is invalid, so that the HA transfers the system address stored in it to a CA; and transferring, by the NC, to the HA, the request message written into the processing queue. Embodiments of the present invention may prevent the deadlock of the node controller and avoid a crash of the NUMA system.</p> |
