Distributed shared log for modern storage servers

A system, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• select a range of log entries for a logical log stream from a distributed shared log, the distributed shared log being distributed over a plurality of storage units, the distributed shared log associated with a plurality of logical log streams, and the distributed shared log providing ordered writes across the plurality of logical log streams;
• map the selected range of log entries to associated storage units in the plurality of storage units;
• request the selected range of log entries from the associated storage units based on the mapping, wherein the selected range of log entries arc stored according to metadata at the associated storage units;
• receive the selected range of log entries from the associated storage units based on the requesting;
• and
• reassemble the received selected range of log entries for the logical log stream.

A tangible computer-readable device having instructions stored thereon that, when executed by at least one computing device, causes the at least one computing device to perform operations comprising:

• selecting a range of log entries for a logical log stream from the distributed shared log, the distributed shared log being distributed over a plurality of storage units, the distributed shared log associated with a plurality of logical log streams, and the distributed shared log providing ordered writes across the plurality of logical log streams;
• mapping the selected range of log entries to associated storage units in the plurality of storage units;
• requesting the selected range of log entries from the associated storage units based on the mapping, wherein the selected range of log entries are stored according to metadata at the associated storage units;
• receiving the selected range of log entries from the associated storage units based on the requesting;
• and
• reassembling the received selected range of log entries for the logical log stream.