Dell Products Inc.

Emc IP Holding Company LLC

Jiang Cao

Kalyan Chakravarthy Gunda

Yong Yang

Lu Lei

Ao Sun

Gary Jialei Wu

Jian Gong

Chark Wenshuai Yu

Xingshan Wang

Willa Lang Yuan

Xiaochen Liu

Wayne Wei Gao

Yi Ye

Yurun Wu

Xiaoxiao Mao

Shu Jiang

Lemonie Mengchi Li

The technologies described herein are generally directed toward deallocating storage resources based on metadata of a deleted object. In an embodiment, a method can include, based on an indication that a data object stored using storage resources of a data storage system is to be deleted, identifying metadata of a first chunk of storage of the data storage system. The method can further include based on the metadata of the first chunk of storage, selecting a deallocation approach from different deallocation approaches, the deallocation approach usable to designate the first chunk of storage as available for storage of one or more other data objects. Further, the method can include facilitating designation of the first chunk of storage as being available for the storage of the one or more other data objects in accordance with the deallocation approach.

Deallocating storage resources based on metadata of a deleted object

A system can determine to write a data object to a storage system that implements an append-only write policy to data chunks. The system can divide a data chunk of the data chunks into a number of data segments. The system can divide respective data segments of the number of data segments into respective stripes. The system can write a first portion of data of the data object to first stripes of the respective stripes. The system can, after writing the first portion of data of the data object to the first stripes, and independently of writing a second portion of data of the data object to second stripes of the respective stripes, determine erasure coding values, and write respective erasure coding values of the erasure coding values to respective erasure coding stripes that are separate from the respective stripes, The system can store the data chunk.

Variable sized data chunks with striped erasure coding

The technologies described herein are generally directed toward retrieving data from streaming storage. In an embodiment, a method can include receiving an application data request that identifies application data to be retrieved from a sequence of stored data chunks that correspond to a stored stream of data. The method can further include, based on the application data request, estimating a first estimated location of the application data, with the first estimated location including an identified chunk of a sequence of chunks. Further, the method can include, based on the application data request and a characteristic of the identified chunk, retrieving, by the system, a first data block that is estimated to comprise the application data, resulting in a first retrieved data block.

Retrieving data from streaming storage

The present disclosure relates to a method, an electronic device, and a computer program product for storage management. According to an example, a method for storage management is provided, including: generating a to-be-stored target data stream based on a to-be-stored object, wherein the target data stream includes at least a part of the object, determining whether the target data stream matches at least one stored data stream that has been stored in a storage apparatus, wherein sizes of the target data stream and the at least one stored data stream depend on their respective content, and, if the target data stream does not match the at least one stored data stream, storing the target data stream in the storage apparatus. Therefore, the performance of storage management can be improved, and the storage costs can be reduced.

Method, electronic device, and computer program product for storage management

Metadata of a storage object is managed. An example method for managing metadata of a storage object comprises: in response to receiving a request to access metadata of a storage object, obtaining a first identifier of the storage object from the request; determining, based on the first identifier, a second identifier of a page where the metadata is located, an address of the page and the second identifier being stored in association in an entry of a page table distributed among a plurality of storage devices with different access speeds; determining, from the plurality of storage devices, a storage device storing the entry; and obtaining the address of the page by accessing the entry from the storage device, so as to access the metadata from the page.

Method, apparatus and computer program product for managing metadata of storage object

The present disclosure relates to transmitting data between multiple processes. An example method includes: establishing, in response to receiving a request to transmit data between a client terminal process and a server process in a computing device, a communication connection between the client terminal process and the server process, allocating shared storage blocks to the communication connection in response to determining that available shared storage blocks exist in the computing device, and transmitting data between the client terminal process and the server process using the shared storage blocks. Corresponding devices and program products are also described. Beneficially, shared storage blocks can provide higher bandwidth for inter-process data transmission, thereby improving the performance of data transmission.

Method, device, and program product for transmitting data between multiple processes

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Shanghai, China

Jiang Cao