US 11,144,252 B2 · Optimizing write IO bandwidth and latency in an active-active clustered system based on a single storage node having ownership of a storage object

Abstract

Techniques for optimizing write IO bandwidth and latency in an active-active clustered system using storage object affinity to a single node. The active-active clustered system can include at least a primary storage node and a secondary storage node that maintain their own journals. The respective journals are directly accessible to both storage nodes. The journals are synchronized for each page or entity of a storage object when a storage IO request is issued to a storage node to which the storage object does not have affinity. Such synchronization is performed in the framework of acquiring a lock on the entity of the storage object during internode communications. To facilitate recovery from a disaster, data loss, and/or data corruption, transaction IDs associated with storage IO operations are employed to facilitate identification of the most up-to-date reference or description information for a given data or metadata page of a storage object.

Claims17

Dependent claims

A method of executing a storage input/output (IO) request for a storage object that has affinity to a storage node, comprising:

receiving a storage IO request for a storage object at a respective storage node from among a first storage node and a second storage node in an active-active clustered system, the second storage node being communicably connected to the first storage node;
determining that the respective storage node is a current owner of the storage object, an ownership of the storage object providing an indication of an affinity of the storage object to the respective storage node;
having determined that the respective storage node is the current owner of the storage object, executing, by the respective storage node, the storage IO request for the storage object while avoiding performing internode communications with another storage node from among the first storage node and the second storage node in the active-active clustered system;
inspecting, by the respective storage node, the storage IO request to identify an entity associated with the storage object;
and
setting, by the respective storage node, a local lock on the identified entity while avoiding performing internode communications with the other storage node in the active-active clustered system.

3 more elements

An active-active clustered system including at least two storage nodes communicably connected to one another, each respective storage node from among the at least two storage nodes comprising:

a memory;
and
processing circuitry configured to execute program instructions out of the memory to:
receive a storage IO request for a storage object;
determine that the respective storage node is a current owner of the storage object, an ownership of the storage object providing an indication of an affinity of the storage object to the respective storage node;
having determined that the respective storage node is the current owner of the storage object, execute the storage IO request for the storage object while avoiding performing internode communications with another storage node from among the at least two storage nodes in the active-active clustered system;
inspect the storage IO request to identify an entity associated with the storage object;
and
set a local lock on the identified entity while avoiding performing internode communications with the other storage node in the active-active clustered system.

6 more elements

A computer program product including a set of non-transitory, computer-readable media having instructions that, when executed by processing circuitry of a respective storage node from among a first storage node and a second storage node communicably connected to the first storage node in an active-active clustered system, cause the processing circuitry to perform a method comprising:

receiving a storage IO request for a storage object at the respective storage node;
determining that the respective storage node is a current owner of the storage object, an ownership of the storage object providing an indication of an affinity of the storage object to the respective storage node;
having determined that the respective storage node is the current owner of the storage object, executing, by the respective storage node, the storage IO request for the storage object while avoiding performing internode communications with another storage node from among the first storage node and the second storage node in the active-active clustered system;
inspecting, by the respective storage node, the storage IO request to identify an entity associated with the storage object;
and
setting, by the respective storage node, a local lock on the identified entity while avoiding performing internode communications with the other storage node in the active-active clustered system.

3 more elements

Dependencies are inferred from the claim text.

Optimizing write IO bandwidth and latency in an active-active clustered system based on a single storage node having ownership of a storage object

Life of this patent

Optimizing write IO bandwidth and latency in an active-active clustered system based on a single storage node having ownership of a storage object

Life of this patent

Abstract

Claims17