Systems and methods providing incremental backup for persistent services

A computer-implemented method associated with a cloud computing environment, comprising:

• determining that a write to disk storage is requested by an application executing in the cloud computing environment;
• marking, by a kernel function at a device layer, buffers of a page in a page cache that correspond to the requested write as dirty;
• sending, by an event-driven mechanism, an event to an entry handler in user space, wherein the event has a block number associated with the dirty buffer as a payload;
• accumulating, in the user space, the block numbers received via events;
• determining that a pre-determined condition associated with the accumulated block numbers is satisfied;
• and
• saving blocks associated with the accumulated block numbers to a persistent data store as an incremental backup.

A non-transitory, computer readable medium having executable instructions stored therein, the medium comprising:

• instruction to determine that a write to disk storage is requested by an application executing in a cloud computing environment;
• instructions to mark, by a kernel function at a device layer, buffers of a page in a page cache that correspond to the requested write as dirty;
• instructions to send, by an event-driven mechanism, an event to an entry handler in user space, wherein the event has a block number associated with the dirty buffer as a payload;
• instructions to accumulate, in the user space, the block numbers received via events;
• instructions to determine that a pre-determined condition associated with the accumulated block numbers is satisfied;
• and
• instructions to save blocks associated with the accumulated block numbers to a persistent data store as an incremental backup.