Write-once-read-many in cloud for file systems backed up to object storage

Abstract

Write-once-read-many in cloud for file systems backed up to object storage (e.g., using a computerized tool), is enabled. For example, a system can comprise at least one processor, and at least one memory that stores executable instructions that, when executed by the at least one processor, facilitate performance of operations. The operations can comprise identifying changes to data in a file of a file system relative to a first version of an object chunk representative of the data in an object store, wherein the data is determined to comprise a defined data retention policy, copying changed data, of the data, from the file system to a second version of the object chunk, and copying unchanged data, of the data, from the first version of the object chunk to the second version of the object chunk.