[NFS 的bug修复已提交，svn2556 欢迎测试] 开个帖子讨论RTT上使用NFS。

发布于 2012-12-27 13:40:20 浏览：6747 订阅该版

用法参考，
[1]  [http://www.rt-thread.org/dokuwiki/doku.php?id=rt-thread_nfs%E4%BD%BF%E7%94%A8%E6%8C%87%E5%8D%97](http://www.rt-thread.org/dokuwiki/doku.php?id=rt-thread_nfs%E4%BD%BF%E7%94%A8%E6%8C%87%E5%8D%97)
[2] realtouch上使用NFS，也需要参考上贴，配套例程可以参见
[https://github.com/RT-Thread/realtouch-stm32f4/tree/master/software/examples/examples/3_networking_nfs](https://github.com/RT-Thread/realtouch-stm32f4/tree/master/software/examples/examples/3_networking_nfs)

windows平台上，FreeNFS做NFS server，使用wireshark抓包。
笔者的实验平台，realtouch，spi flash上fatfs文件系统做/目录，将NFS挂载到/nfs目录下，

下面分别执行如下三个命令后，wireshark抓包，见二楼附件
1) mount nfs过程中的包
2) finsh里执行 ls("/nfs") 时的包
3) finsh />copy("/nfs/1.exe", "/2.exe")
下载附件 [test.zip](https://oss-club.rt-thread.org/uploads/5198_1cc2b401c55949291167cbbf20792b98.zip)

下载附件 [nfs_pcap.7z](https://oss-club.rt-thread.org/uploads/3230_736787b641bd427e4ccb867098e04c5a.7z)

下载附件 [copy_to_server.bz2](https://oss-club.rt-thread.org/uploads/3230_0c15dff5b0f497febd266ea32b2a9a30.bz2)

![mode.jpg](https://oss-club.rt-thread.org/uploads/5198_c1428b0576d5607e143ae4f64bdd093b.jpg)

20 个回答

prife 2012-12-27

这家伙很懒，什么也没写！

bbstr 2012-12-27

这家伙很懒，什么也没写！

prife 2012-12-27

这家伙很懒，什么也没写！

bbstr 2012-12-27

这家伙很懒，什么也没写！

bernard 2012-12-27

这家伙很懒，什么也没写！

bbstr 2012-12-28

这家伙很懒，什么也没写！

bbstr 2012-12-28

这家伙很懒，什么也没写！

```
CLIENT *clnt_create (const char *hostname, const unsigned long prog,
				 const unsigned long vers, const char *proto)
{
	int sock;
	struct hostent *h;
	struct sockaddr_in sin;
	struct timeval tv;
	CLIENT *client;

h = gethostbyname(hostname);
	if (h == NULL) {
		rt_kprintf("unknown host
");
		return (NULL);
	}
	if (h->h_addrtype != AF_INET) {
		rt_kprintf("unknow inet
");
		return (NULL);
	}
	memset((char*)&sin,0,sizeof(sin));
	sin.sin_family = h->h_addrtype;
	sin.sin_port = 0;
	memmove((char *) &sin.sin_addr, h->h_addr, h->h_length);

sock = -1;
	if (strcmp(proto, "udp") == 0)
	{
		tv.tv_sec = 5;
		tv.tv_usec = 0;
		client = clntudp_create(&sin, prog, vers, tv, &sock);
		if (client == NULL) return NULL;
		tv.tv_sec = 1;
		clnt_control(client, CLSET_TIMEOUT, (char*)&tv);
	}
	else
	{
		rt_kprintf("unknow protocol
");
		return NULL;
	}

return (client);
}
```

看了下nfs的代码，似乎在拷贝大的文件时，需要的时间比较多，但是目前的延时是1秒

打算把这两行注释掉，用5秒试试看效果

```
tv.tv_sec = 1;
clnt_control(client, CLSET_TIMEOUT, (char*)&tv);
```