Updating a track format table used to provide track format codes for cache control blocks with more frequently accessed track format metadata

A system for managing read and write requests from a host to tracks in storage cached in a cache, comprising:

• a processor;
• and
• a computer readable storage medium having computer readable program code embodied therein that is executable to perform operations, the operations comprising:
• maintaining a track format table associating track format codes with track format metadata, wherein each instance of the track format metadata indicates a layout of data in a track, and wherein cache control blocks for tracks in the cache include track format codes associated with the track format metadata of the tracks in the cache;
• maintaining track format access information indicating accesses of track format metadata not included in the track format table;
• and
• adding track format metadata, indicated in the track format access information that is not in the track format table, to the track format table to associate with a track format code based on a number of accesses of the track format metadata indicated in the track format access information.

A method for managing read and write requests from a host to tracks in storage cached in a cache, comprising:

• maintaining a track format table associating track format codes with track format metadata, wherein each instance of the track format metadata indicates a layout of data in a track, and wherein cache control blocks for tracks in the cache include track format codes associated with the track format metadata of the tracks in the cache;
• maintaining track format access information indicating accesses of track format metadata not included in the track format table;
• and
• adding track format metadata, indicated in the track format access information that is not in the track format table, to the track format table to associate with a track format code based on a number of accesses of the track format metadata indicated in the track format access information.