System and method for combining erasure-coded protection sets

A method, comprising:

• selecting, by a system comprising a processor, source chunks from chunks of an object storage system, wherein the source chunks are determined to have fewer data fragments than remaining of the chunks other than the source chunks, wherein the data fragments do not have common indices that are utilized for erasure coding the data fragments, and wherein the erasure coding the data fragments results in generation of source coding fragments;
• determining a meta chunk that represents a combination of the data fragments;
• and
• based on a summation of the source coding fragments, determining combined coding fragments for the source chunks at a meta chunk level, wherein the combined coding fragments are to be employed to recover at least a portion of the data fragments during a failure condition.

A computer-readable storage medium comprising instructions that, in response to execution, cause a server device comprising a processor to perform operations, comprising:

• encoding chunks of data stored in an object storage system, wherein the chunks comprise data fragments that have been assigned respective indices, and wherein the encoding comprises combining, based on the respective indices, the data fragments with corresponding encoding coefficients to generate respective coding fragments;
• combining a group of the chunks to generate a meta chunk, wherein the group of the chunks are determined not to have more than a defined number of data fragments, and wherein the group of the chunks are determined not to have data fragments having common indices;
• and
• based on a summation of a group of the coding fragments that correspond to the group of the chunks, determining meta chunk coding fragments that are to be employed to recover at least a portion of the group of the chunks during a failure condition.