Dell Products Inc.

Dell & Products L.p.

Vicky Huiqin Sheng

Dong Wang

Dandan Zhang

Shi Hu

Kenneth Andersen

Huidong Qu

Emily Kang

Haoyuan Song

Alex Xingang Wang

The described technologies relate to efficient data collection. For instance, data collection information is generated based on a source data block and a target data block in a local data station. The data collection information is sent to a remote data station for data collection thereby based on the data collection information. In addition, data collection can be performed in the local data station based on the source data block and the target data block responsive to receiving a collection completion response from the remote data station. Since the size of the data collection information is much smaller than that of the valid data block, the amount of data sent by the local data station to other remote data stations is significantly reduced, thereby improving the performance efficiency of data collection and avoiding the impact of data collection on the storage performance of the local data station and other tasks.

Reducing communication overhead for replica garbage collection

The subject technology relates to recovering an object in a storage system. For instance, an object in a storage system is recovered by parsing object metadata associated with the object from a log in the storage system and storing the parsed object metadata in a storage space. In response to receiving a request to recover the object, the parsed object metadata from the storage space is retrieved. A linkage can be reestablished to a chunk corresponding to the object based on the retrieved object metadata. In this way, space reclamation is not impacted during recovery for the object, thereby increasing the space utilization. Furthermore, the time spent in the recovery process is reduced, and the success rate of object recovery is increased.

Method, device, and computer program product for recovering object in storage system

Growing community of inventors

Shanghai, China

Vicky Huiqin Sheng