Computing storage separation system and data access method therefor, medium, and electronic device

An electronic device, comprising:

• a memory, having a computer program stored thereon;
• and
• a processor configured to execute the computer program in the memory so as to implement a data access method for a computing storage separation system, comprising:
• acquiring a data access request;
• acquiring, based on a type of the data access request, an index table on a master node of the computing storage separation system or synchronization metadata information of the master node and a slave node of the master node;
• when the data access request is a data read request, querying an index item of a to-be-read data block in the index table, and reading the to-be-read data block based on a result of querying the index item, wherein the index item in the index table at least comprises a storage location attribute and a storage address attribute;
• and/or
• when the data access request is a data write request, writing a to-be-written data block into an idle space of a persistent memory on the slave node based on the synchronization metadata information, wherein the synchronization metadata information is used for indicating space occupancy and idleness of the persistent memory,
• wherein said reading the to-be-read data block based on the result of querying the index item comprises:
• when the storage location attribute of the queried index item indicates that the to-be-read data block is stored in a local cache table of the master node, reading the to-be-read data block from the cache table based on the storage location attribute of the queried index item;
• when the storage location attribute of the queried index item indicates that the to-be-read data block is stored in the persistent memory, reading the to-be-read data block from the persistent memory by means of remote direct memory access based on the storage location attribute of the queried index item;
• when the storage location attribute of the queried index item indicates that the to-be-read data block is stored in a solid state disk on the slave node, reading the to-be-read data block from the solid state disk by means of remote process call based on the storage location attribute of the queried index item;
• and
• when the index item of the to-be-read data block is not queried, reading the to-be-read data block from the slave node by means of remote process call.