System and method for direct object to file mapping in a global filesystem

A non-transitory computer readable medium having stored thereon instructions for causing a processing circuitry to execute a process for storing a file in a cloud storage service (CSS) having a blocks index for indexing blocks that each have a unique block identifier, each block identifier being based on the content of the respective one of the blocks that it identifies, the blocks index having entries indicating for each block identifier at least one location of the block within an object storage system (OSS), the process comprising:

• transmitting, from the CSS, a list of at least one block identifier indicating at least one respective block that is not in the blocks index but which is indicated by a received file map for the file, each block on the list having a unique block identifier;
• adding, by the CSS, for each respective block indicated on the list and that has been successfully uploaded to the OSS, an entry into the blocks index to indicate a location of the uploaded block within the OSS;
• and
• when all of the blocks indicated on the list have been successfully uploaded, concatenating all of the blocks of the received file map in an order specified by the received file map to form a file object corresponding to the file in the OSS;
• wherein the transmitted list further includes at least one upload token, wherein the at least one upload token specifies information for a client device to successfully upload to the OSS one or more of the blocks that the upload token is for.

A system for storing a file in cloud storage service (CSS) having a blocks index for indexing blocks that each have a unique block identifier, each block identifier being based on the content of the respective one of the blocks that it identifies, the blocks index having entries indicating for each block identifier at least one location of the block within an object storage system (OSS), comprising:

• a processing circuitry;
• and
• a memory, the memory containing instructions that, when executed by the processing circuitry, configure the system to:
• transmit, from the CSS, a list of at least one block identifier indicating at least one respective block that is not in the blocks index but which is indicated by a received file map for the file, each block on the list having a unique block identifier;
• add, by the CSS, for each respective block indicated on the list and that has been successfully uploaded to the OSS, an entry into the blocks index to indicate a location of the uploaded block within the OSS;
• and
• when all of the blocks indicated on the list have been successfully uploaded, concatenate all of the blocks of the received file map in an order specified by the received file map to form a file object corresponding to the file in the OSS;
• wherein the transmitted list further includes at least one upload token, wherein the at least one upload token specifies information for a client device to successfully upload to the OSS one or more of the blocks that the upload token is for.