Fast-zeroing in a file system

摘要

A technique performs a host write operation on behalf of a host computer. The technique involves receiving a write request from the host computer, and providing a data write command and a zero write command to backend storage in response to the write request from the host computer. The backend storage maintains a file on behalf of the host computer. Additionally, the data write command includes host data to be written to the file. Furthermore, the zero write command defines a field of zeroes to be written to the file. The technique further involves sending an acknowledgement to the host computer, the acknowledgement serving as a response to the write request from the host computer.

主权项

1. A method of performing a host write operation on behalf of a host computer, the method comprising:
receiving, by processing circuitry, a write request from the host computer; providing, by the processing circuitry, a data write command and a zero write command to backend storage in response to the write request from the host computer, the backend storage maintaining a file on behalf of the host computer; the data write command including host data to be written to the file, and the zero write command defining a field of zeroes to be written to the file; and sending, by the processing circuitry, an acknowledgement to the host computer, the acknowledgement serving as a response to the write request from the host computer.