Optimized file creation in WAN-optimized storage

摘要

The file creation on remote data storage accessible via a WAN can be optimized by creating temporary files in advance on a remote data storage. The file handles or other file access parameters for these temporary files are cached at a client network location. A file creation request from a client is intercepted at the client network location and one of the cached file handle is returned to the client. This enables the client to immediately write data to the corresponding temporary file, avoiding the delay incurred by communicating the file creation request and its response over a WAN. One or more storage commands are sent to the remote data storage to change the attributes of the temporary file to match those requested by the client, such as the file name, directory, and/or file permissions. File creation requests may be selectively optimized according to rules or criteria specified by users.

主权项

1. A method of optimizing creation of files on a remote data storage, the method comprising:
prior to receiving a request for creating a new file at a second network location from a first client,
creating a new file set of at least a new temporary file on a remote data storage at a first network location,transferring file access parameters for the new file set via a network to the second network location, wherein the file access parameters include a file handle, andcaching the file access parameters at the second network location; receiving the request for creating the new file at the second network location from the first client, wherein the request for creating the new file includes new file creation attributes; in response to receiving the request for creating the new file, providing at least the file handle from the cached file access parameters to the first client, thereby providing the first client with access to the new temporary file in the new file set; and issuing at least one storage command from the second network location directing the remote data storage at the first network location to modify the new temporary file to match at least a portion of the new file creation attributes, wherein the storage command is adapted to direct the remote data storage to rename the new temporary file to a file name specified in the new file creation attributes.