Abstract: A data storage method and a physical server are provided. M virtual machines are deployed on a plurality of physical servers. The M virtual machines are respectively deployed as M data nodes in a distributed storage system. A metadata node in the distributed storage system receives a data storage request of a client, and determines identifiers of N virtual machines from the M virtual machines based on stored grouping information. The grouping information records a mapping relationship between a plurality of anti-affinity groups and identifiers of the M virtual machines.

Abstract: A kernel update method, a computer program product and a computer device, where the computer device sets a first interface mapping table to be invalid such that an interface block stops sending a service request of a service application to a driver logic of a first driver logic block such that the first driver logic block temporarily stops providing a driver service for the service application, replaces the first driver logic block in the loadable kernel with a second driver logic block, and records, in a second interface mapping table, a correspondence of each interface in the interface block to a driver logic in the second driver logic block. Therefore, the second driver logic block executes a driver logic on a new service request from the interface block according to the second interface mapping table.

Abstract: A data storage method and a physical server are provided. M virtual machines are deployed on a plurality of physical servers. The M virtual machines are respectively deployed as M data nodes in a distributed storage system. A metadata node in the distributed storage system receives a data storage request of a client, and determines identifiers of N virtual machines from the M virtual machines based on stored grouping information. The grouping information records a mapping relationship between a plurality of anti-affinity groups and identifiers of the M virtual machines.

Abstract: A kernel update method, a computer program product and a computer device, where the computer device sets a first interface mapping table to be invalid such that an interface block stops sending a service request of a service application to a driver logic of a first driver logic block such that the first driver logic block temporarily stops providing a driver service for the service application, replaces the first driver logic block in the loadable kernel with a second driver logic block, and records, in a second interface mapping table, a correspondence of each interface in the interface block to a driver logic in the second driver logic block. Therefore, the second driver logic block executes a driver logic on a new service request from the interface block according to the second interface mapping table.