Method, device, and computer program product for managing access request in storage system

An electronic device, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, the memory having instructions stored thereon, the instructions, when executed by the at least one processor, causing the electronic device to perform a method for managing an access request in a storage system, the method comprising:
• obtaining, based on an access request to the storage system, an address range of a data object involved in the access request;
• determining whether a garbage collection operation is performed on a data extent within the address range, based on an association relationship between a group of address ranges and a group of operations being performed on a group of data extents within the group of address ranges;
• identifying an access type of the access request in accordance with determining that the garbage collection operation is performed on the data extent within the address range;
• responding to the access request based on the access type by using a data extent within an address range in the storage system on which no garbage collection operation is performed;
• obtaining a group of performance features associated with the group of data extents and the group of operations being performed on the group of data extents;
• and
• training the association relationship based on the group of operations and the group of performance features associated with the group of data extents, so that a group of operation state estimates obtained based on the trained association relationship and the group of performance features match the group of operations,
• wherein the performance feature in the group of performance features comprises a payload in the data amount,
• wherein determining the payload comprises:
• determining a difference between the data amount accessed in the data extent and a target data object in the storage system, and
• determining the payload based on the difference.

A computer program product, tangibly stored on a non-transitory computer-readable medium and comprising machine-executable instructions, which are used to perform a method, the method comprising:

• obtaining, based on an access request to the storage system, an address range of a data object involved in the access request;
• determining whether a garbage collection operation is performed on any data extent within the address range, based on an association relationship between a group of address ranges and a group of operations being performed on a group of data extents within the group of address ranges;
• identifying an access type of the access request in accordance with determining that the garbage collection operation is performed on the data extent within the address range;
• responding to the access request based on the access type by using a data extent within an address range in the storage system on which no garbage collection operation is performed;
• obtaining a group of performance features associated with the group of data extents and the group of operations being performed on the group of data extents;
• and
• training the association relationship based on the group of operations and the group of performance features associated with the group of data extents, so that a group of operation state estimates obtained based on the trained association relationship and the group of performance features match the group of operations,
• wherein the performance feature in the group of performance features comprises a payload in the data amount,
• wherein determining the payload comprises:
• determining a difference between the data amount accessed in the data extent and a target data object in the storage system, and
• determining the payload based on the difference.