Method, device and computer program product for storage management

A device for storage management, comprising:

• at least one processing unit;
• at least one memory being 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 device to perform acts comprising:
• receiving an update request for a target object, which has become an updated target object and is stored in a first storage block, to write the updated target object into a second storage block different from the first storage block;
• determining, by using a search tree, at least one candidate object associated with the target object, the search tree indicating a hierarchical relation among a plurality of objects, wherein a first node corresponding to the target object and a second node corresponding to the at least one candidate object share a same index node in the search tree;
• determining whether the at least one candidate object was updated during a past predetermined time period;
• and
• in response to the at least one candidate object not being updated during the past predetermined time period, in response to determining that the first node and the second node share the same index node, and in response to determining to write the updated target object into the second storage block, moving the at least one candidate object from a third storage block into a fourth storage block different from the third storage block.

A computer program product being stored in a non-transitory computer storage medium and comprising machine-executable instructions which, when executed by a device, cause the device to perform actions comprising:

• receiving an update request for an updated target object stored in a first storage block to write the updated target object into a second storage block different from the first storage block;
• determining, by using a search tree, at least one candidate object associated with the updated target object, the search tree indicating a hierarchical relation among a plurality of objects, wherein a first node corresponding to the updated target object and a second node corresponding to the at least one candidate object share a same index node in the search tree;
• determining whether the at least one candidate object was updated during a past predetermined time period;
• and
• in response to the at least one candidate object not being updated during the past predetermined time period, in response to determining that the first node and the second node share the same index node, and in response to determining to write the updated target object into the second storage block, moving the at least one candidate object from a third storage block into a fourth storage block different from the third storage block.