Managing configuration data

A method for storage management, comprising:

• detecting whether a transaction of modifying configuration data of a storage system is initiated, the configuration data being stored in a database storage area and a buffered version of the configuration data being stored in a memory independent from the database storage area;
• in accordance with a detection that the transaction is initiated, building a data buffer to buffer a target configuration data section to be modified, the data buffer being mapped to a storage sector of the memory in which the target configuration data section is expected to be stored;
• determining whether the transaction is successfully completed;
• and
• in accordance with a determination that the transaction fails to be successfully completed, releasing the data buffer and aborting the transaction, without modifying the buffered version of the configuration data;
• wherein the storage system is controlled by a primary control node and a secondary control node, the method being performed by the secondary control node and the buffered version of the configuration data being maintained by the primary control node, and wherein detecting whether the transaction is initiated comprises:
• receiving an update request from the primary control node to request the secondary control node to read the target configuration data section from the database storage area to update the buffered version of the configuration data;
• and
• in accordance with a reception of the update request, determining that the transaction is initiated.

An electronic device, comprising:

• at least one processor;
• and
• at least one memory having computer program instructions stored therein, the at least one memory and the computer program instructions configured, with the at least one processor, to cause the electronic device to perform acts comprising:
• detecting whether a transaction of modifying configuration data of a storage system is initiated, the configuration data being stored in a database storage area and a buffered version of the configuration data being stored in a memory independent from the database storage area;
• in accordance with a detection that the transaction is initiated, building a data buffer to buffer a target configuration data section to be modified, the data buffer being mapped to a storage sector of the memory in which the target configuration data section is expected to be stored;
• determining whether the transaction is successfully completed;
• and
• in accordance with a determination that the transaction fails to be successfully completed, releasing the data buffer and aborting the transaction, without modifying the buffered version of the configuration data;
• wherein the storage system is controlled by a primary control node and a secondary control node, the electronic device is the primary control node and the buffered version of the configuration data being maintained by the electronic device, and wherein the acts further comprises:
• after building the data buffer,
• storing the target configuration data section in the data buffer;
• and
• initiating a first write request to the database storage area to request to modify the configuration data stored in the database storage area, the first write request comprising an address of the data buffer.

An electronic device, comprising:

• at least one processor;
• and
• at least one memory having computer program instructions stored therein, the at least one memory and the computer program instructions configured, with the at least one processor, to cause the electronic device to perform acts comprising:
• detecting whether a transaction of modifying configuration data of a storage system is initiated, the configuration data being stored in a database storage area and a buffered version of the configuration data being stored in a memory independent from the database storage area;
• in accordance with a detection that the transaction is initiated, building a data buffer to buffer a target configuration data section to be modified, the data buffer being mapped to a storage sector of the memory in which the target configuration data section is expected to be stored;
• determining whether the transaction is successfully completed;
• and
• in accordance with a determination that the transaction fails to be successfully completed, releasing the data buffer and aborting the transaction, without modifying the buffered version of the configuration data;
• wherein the storage system is controlled by a primary control node and a secondary control node, the electronic device being the secondary control node and the buffered version of the configuration data being maintained by the primary control node, and wherein detecting whether the transaction is initiated comprises:
• receiving an update request from the primary control node to request the secondary control node to read the target configuration data section from the database storage area to update the buffered version of the configuration data;
• and
• in accordance with a reception of the update request, determining that the transaction is initiated.

A computer program product having a non-transitory computer readable medium which stores a set of instructions to perform storage management;

• the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of:
• detecting whether a transaction of modifying configuration data of a storage system is initiated, the configuration data being stored in a database storage area and a buffered version of the configuration data being stored in a memory independent from the database storage area;
• in accordance with a detection that the transaction is initiated, building a data buffer to buffer a target configuration data section to be modified, the data buffer being mapped to a storage sector of the memory in which the target configuration data section is expected to be stored;
• determining whether the transaction is successfully completed;
• and
• in accordance with a determination that the transaction fails to be successfully completed, releasing the data buffer and aborting the transaction, without modifying the buffered version of the configuration data;
• wherein the storage system is controlled by a primary control node and a secondary control node, the method being performed by the primary control node and the buffered version of the configuration data being maintained by the primary control node, and wherein the method further comprises:
• after building the data buffer,
• storing the target configuration data section in the data buffer;
• and
• initiating a first write request to the database storage area to request to modify the configuration data stored in the database storage area, the first write request comprising an address of the data buffer.