Pure Storage, Inc.
THINING DATABASES FOR GARBAGE COLLECTION

Abstract:

An implementation of the disclosure provides a system comprising a storage array comprising a storage controller coupled to the storage array. The storage controller comprising a processing device to remap a plurality of deduplication references in a deduplication map to point to an earlier occurrence of duplicate data of a data block for the deduplication map. The processing device further to update an entry of the deduplication map associated with the plurality of deduplication references with a record indicating that the entry is no longer referenced and trim the entry from the deduplication map that is associated with the record.