Abstract: A system and a method are disclosed that efficiently supports an append operation in an object storage system. A size of data received with a request for an append operation from an application is determined based on a data-alignment characteristic of a storage medium. Data that is not aligned with the data-alignment characteristic is stored in persistent memory and aggregated with other data from the application that is not aligned with the data-alignment characteristic, while data that is aligned with the data-alignment characteristic is stored directly in the storage medium. Aggregated data that becomes aligned with the data-alignment characteristic as additional requests for append operations are received are migrated to the storage medium.

Abstract: A method may include storing at least a portion of a metadata buffer of a persistent data structure in volatile memory, and storing at least a portion of a data buffer of the persistent data structure in persistent memory. A system may include a processor, a volatile memory coupled to the processor, and a persistent memory coupled to the processor. The processor may be configured to execute procedures including storing at least a portion of a metadata buffer of a persistent data structure in volatile memory, and storing at least a portion of a data buffer of the persistent data structure in persistent memory. A method may include storing at least a portion of a transient part of a persistent data structure in volatile memory, and storing at least a portion of a persistent part of the persistent data structure in persistent memory.

Abstract: A method may include storing at least a portion of a metadata buffer of a persistent data structure in volatile memory, and storing at least a portion of a data buffer of the persistent data structure in persistent memory. A system may include a processor, a volatile memory coupled to the processor, and a persistent memory coupled to the processor. The processor may be configured to execute procedures including storing at least a portion of a metadata buffer of a persistent data structure in volatile memory, and storing at least a portion of a data buffer of the persistent data structure in persistent memory. A method may include storing at least a portion of a transient part of a persistent data structure in volatile memory, and storing at least a portion of a persistent part of the persistent data structure in persistent memory.

Abstract: A system and a method are disclosed that provides atomicity for large data writes to persistent memory of an object storage system. A segment of persistent memory is allocated to an application. The persistent memory includes non-volatile memory that is accessible in a random access, byte-addressable manner. The segment of persistent memory is associated with first and second bits of a bitmap. The first bit is set indicating that the segment of persistent memory has been allocated. Data is received from the application for storage in the segment of persistent memory, and the second bit is set indicating that data in the segment of persistent memory has been finalized and is ready for storage in a storage medium that is different from persistent memory. The atomicity of the data in persistent memory may be determined based on the first bit and the second bit being set.

Abstract: A method for mapping an object store may include storing a data entry within a mapping page for an object in the object store, wherein the data entry may include a key and a value, and the value may include an address for the object in the object store. The method may further include storing multiple data entries within the mapping page for multiple corresponding objects in the object store, wherein each data entry may include a key and one or more values for a corresponding object in the object store, and each value may include an address for the corresponding object in the object store. The data entries may be part of a mapping data structure which may include nodes, and each node may be stored within a mapping page.

Abstract: A system and a method are disclosed that provides atomicity for large data writes to persistent memory of an object storage system. A segment of persistent memory is allocated to an application. The persistent memory includes non-volatile memory that is accessible in a random access, byte-addressable manner. The segment of persistent memory is associated with first and second bits of a bitmap. The first bit is set indicating that the segment of persistent memory has been allocated. Data is received from the application for storage in the segment of persistent memory, and the second bit is set indicating that data in the segment of persistent memory has been finalized and is ready for storage in a storage medium that is different from persistent memory. The atomicity of the data in persistent memory may be determined based on the first bit and the second bit being set.

Abstract: A method for mapping an object store may include storing a data entry within a mapping page for an object in the object store, wherein the data entry may include a key and a value, and the value may include an address for the object in the object store. The method may further include storing multiple data entries within the mapping page for multiple corresponding objects in the object store, wherein each data entry may include a key and one or more values for a corresponding object in the object store, and each value may include an address for the corresponding object in the object store. The data entries may be part of a mapping data structure which may include nodes, and each node may be stored within a mapping page.

Abstract: A system and a method are disclosed that provides atomicity for large data writes to persistent memory of an object storage system. A segment of persistent memory is allocated to an application. The persistent memory includes non-volatile memory that is accessible in a random access, byte-addressable manner. The segment of persistent memory is associated with first and second bits of a bitmap. The first bit is set indicating that the segment of persistent memory has been allocated. Data is received from the application for storage in the segment of persistent memory, and the second bit is set indicating that data in the segment of persistent memory has been finalized and is ready for storage in a storage medium that is different from persistent memory. The atomicity of the data in persistent memory may be determined based on the first bit and the second bit being set.

Abstract: A system and a method are disclosed that efficiently supports an append operation in an object storage system. A size of data received with a request for an append operation from an application is determined based on a data-alignment characteristic of a storage medium. Data that is not aligned with the data-alignment characteristic is stored in persistent memory and aggregated with other data from the application that is not aligned with the data-alignment characteristic, while data that is aligned with the data-alignment characteristic is stored directly in the storage medium. Aggregated data that becomes aligned with the data-alignment characteristic as additional requests for append operations are received are migrated to the storage medium.

Abstract: A method for mapping an object store may include storing a data entry within a mapping page for an object in the object store, wherein the data entry may include a key and a value, and the value may include an address for the object in the object store. The method may further include storing multiple data entries within the mapping page for multiple corresponding objects in the object store, wherein each data entry may include a key and one or more values for a corresponding object in the object store, and each value may include an address for the corresponding object in the object store. The data entries may be part of a mapping data structure which may include nodes, and each node may be stored within a mapping page.

Abstract: A method may include storing at least a portion of a metadata buffer of a persistent data structure in volatile memory, and storing at least a portion of a data buffer of the persistent data structure in persistent memory. A system may include a processor, a volatile memory coupled to the processor, and a persistent memory coupled to the processor. The processor may be configured to execute procedures including storing at least a portion of a metadata buffer of a persistent data structure in volatile memory, and storing at least a portion of a data buffer of the persistent data structure in persistent memory. A method may include storing at least a portion of a transient part of a persistent data structure in volatile memory, and storing at least a portion of a persistent part of the persistent data structure in persistent memory.