Combining virtual mapping metadata and physical space mapping metadata

A computer program product for combining virtual mapping metadata and physical space mapping metadata in a storage system by a processor device, the computer program product comprising a non-transitory computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:

• an executable portion that maintains data and metadata into separate virtual streams, wherein the separate virtual streams include a metadata stream for the metadata and a data stream for the data;
• and
• an executable portion that determines the metadata for each input/output (I/O) operation received using a linear function operation, wherein the function operation is an offset of the metadata in the metadata stream that is equal to the I/O operation multiplied by a maximal metadata ratio, allocating the metadata on the metadata stream and dividing the metadata stream into fixed size block that is responsible for describing a size of a logical space, wherein the logical space is equal to one divided by the maximal metadata ratio, and determining if the metadata has been previously loaded.