Win7下，折腾Node.js过程中，运行服务器，其中内部调用相关代码： function show(response) { console.log("Request handler 'show' was called."); fs.readFile("/tmp/test.png", "binary", function(error, file) { if(error) { response.writeHead(500, {"Content-Type": "text/plain"}); response.write(error + "\n"); response.end(); } else { response.writeHead(200, {"Content-Type": "image/png"}); response.write(file, "binary"); response.end(); } }); } 去重命名，结果出错： D:\tmp\tmp_dev_root\node.js> D:\tmp\tmp_dev_root\node.js>node index.js Server has started. Reforst for /upload received. About to route a reforst for /upload Request ha’upload’pload' was called. about to parse padoneg done fs.js:returnreturn binding.rename(pathModule._makeLong(oldPath), ^ Error: EXDEV, cross-device link not perm’C:\Users\CLi\AppData\Local\Temp\df99513a93a1cbfbc26e076f8ae08b92’08b92′ at Object.fs.renameSync (fs.js:439:18) at D:\tmp\tmp_dev_root\node.js\requestHandlers.js:34:8 at IncomingForm.parse (D:\tmp\tmp_dev_root\node.js\node_modules\formidable\lib\incoming_form.js:121:9) at IncomingForm.EventEmitter.emit (events.js:93:17) at IncomingForm._maybeEnd (D:\tmp\tmp_dev_root\node.js\node_modules\formidable\lib\incoming_form.js:383:8) at IncomingForm.handlePart (D:\tmp\tmp_dev_root\node.js\node_modules\formidable\lib\incoming_form.js:212:12) at File.end (D:\tmp\tmp_dev_root\node.js\node_modules\formidablfileb\file.js:71:5) at WriteStream.flush (fs.js:1515:9) at Object.oncomplete (fs.js:297:15) 【解决过程】 1.参考： Node.JS fs.rename doesn’t work How do I move file a to a different partition in Node.js? 去试试代码： var fs = require("fs"), util = require('util'); … //fs.renameSync(files.upload.path, "/tmp/test.png"); var readStream = fs.createReadStream(files.upload.path) var writeStream = fs.createWriteStream("/tmp/test.png"); util.pump(readStream, writeStream, function() { fs.unlinkSync(files.upload.path); }); 最后，就可以实现跨分区重命名文件的功能了。 【总结】 是跨分区重命名文件，会有权限问题。 其中此处使用的方案是，先从源文件拷贝到另外分区的目标文件，然后再unlink，就可以了。 转自：http://blog.sina.com.cn/s/blog_6f0e38af0101dp2g.html