Method of increasing flash endurance by improved metadata management

A method, comprising:

• updating a first metadata log in a non-volatile random-access memory (NVRAM) of a host device corresponding to one or more recent input/output (I/O) operations of the host device to produce an updated first metadata log;
• periodically checking, by the host device, whether a size of the updated first metadata log in the NVRAM of the host device is greater than a flush limit maintained in the host device;
• triggering a meta flush thread when the size of the updated first metadata log is greater than the flush limit maintained in the host device;
• sending, by a non-volatile memory express (NVMe) driver of the host device, a first command for performing synchronization of the updated first metadata log from the host device to one or more solid state drives (SSDs) for updating a second metadata log in the one or more SSDs corresponding to the one or more recent I/O operations;
• receiving at the host device from the one or more SSDs, a second command for acknowledging synchronization completion once the synchronization of the second metadata log in the one or more SSDs is completed in a volume block mapping table of the one or more SSDs;
• and
• discarding, by the host device, metadata of the first metadata log in the host device once the second command is received by the host device from the one or more SSDs.