Multipart uploading to object-based storage

A computer-implemented method, said computer-implemented method comprising:

• obtaining, by one or more processing units, a plurality of transaction logs in blocks from a plurality of nodes of a data storage system, wherein said plurality of transaction logs include a first transaction log and a second transaction log;
• for each of said plurality of transaction logs:
• splitting, by said one or more processing units, said transaction log into log entries;
• grouping, by said one or more processing units, said log entries into groups, said log entries in each of said groups being associated with a same data source;
• and
• writing, by said one or more processing units, said log entries of said groups to empty blocks, wherein log entries from different groups do not share a same block;
• identifying, by said one or more processing units, a same sequence of log entries from a written first transaction log and a written second transaction log;
• and
• uploading, by said one or more processing units, one or more first blocks of said first transaction log that include said same sequence of log entries to an object-based storage, without uploading one or more second blocks of said second transaction log that include said same sequence of log entries to said object-based storage.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, wherein said program instructions being executable by a device to cause said device to perform a function comprising:

• obtaining a plurality of transaction logs in blocks from a plurality of nodes of a data storage system, wherein said plurality of transaction logs include a first transaction log and a second transaction log;
• for each of said plurality of transaction logs:
• splitting said transaction log into log entries;
• grouping said log entries into groups, said log entries in each of said groups being associated with a same data source;
• and
• writing said log entries of said groups to empty blocks, wherein log entries from different groups do not share a same block;
• identifying a same sequence of log entries from a written first transaction log and a written second transaction log;
• and
• uploading one or more first blocks of said first transaction log that include said same sequence of log entries to an object-based storage, without uploading one or more second blocks of said second transaction log that include said same sequence of log entries to said object-based storage.