| 摘要 |
File system virtualization and migration in a Global Name Space on network attached storage (NAS) system, includes file system virtualization by managing file attributes on a NAS virtualization system. The NAS virtualization system receives a file access operation sent from a client computer directed to one of the underlying NAS systems. The NAS virtualization system locates a file identifier included in the file access operation. The file identifier includes node information identifying a second NAS as a destination of the file access operation. The NAS virtualization system removes the node information from the file identifier and forwards the file access operation to the second NAS identified by the node information. The NAS virtualization system receives a reply from the second NAS, adds the node information back to the file identifier included with the response, and forwards the response to the computer with file identifier and appended node information.
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