Method, apparatus and computer program product for managing metadata of storage object

An apparatus, comprising:

• at least one processing unit;
• and
• at least one memory coupled to the at least one processing unit and storing instructions for execution by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the apparatus to perform actions comprising:
• in response to receiving a request to access metadata of a storage object, obtaining a first identifier of the storage object from the request;
• determining, based on the first identifier, a second identifier of a page where the metadata is located, an address of the page and the second identifier being stored in association in an entry of a page table distributed among a plurality of storage devices with different access speeds;
• determining, from the plurality of storage devices, a storage device storing the entry;
• and
• obtaining the address of the page by accessing the entry from the storage device, so as to access the metadata from the page.

A computer program product tangibly stored on a non-transitory computer storage medium and comprising machine executable instructions that, when executed by a device, cause the device to perform operations, comprising:

• in response to receiving a request to access metadata of a storage object, obtaining a first identifier of the storage object from the request;
• determining, based on the first identifier, a second identifier of a page where the metadata is located, an address of the page and the second identifier being stored in association in an entry of a page table distributed among storage devices with different access speeds;
• determining, from the storage devices, a storage device storing the entry;
• and
• obtaining the address of the page by accessing the entry from the storage device, so as to access the metadata from the page.