nfs:server is not responding,still tryin

nfs:server is not responding,still trying的解决方法(转)

nfs:server is not responding,still trying的解决方法 

方法1 :
我在arm上通过NFS共享文件时出现下面的错误提示
nfs:server is not responding,still trying

原因分析:NFS 的默认传输协议是 UDP,而PC机与嵌入式系统通过UPD交互时就会出现严重的网卡丢包现象。

解决方法:在客户端改用TCP协议,使用下面的命令,
 mount -t nfs -o tcp,nolock 192.168.1.115:/arm /mnt

方法2:
在目标板上通过NFS复制PC机上较大文件到目标板上的时候遇到的问题:
nfs: server *** not responding, still trying

修改方法:
nfs mount时候出现的NFS崩溃,按照以下的方式mount
mount -t nfs -o intr,nolock,rsize=1024,wsize=1024 192.168.1.3/root/somedir /client


问题原因:
Mandag 27 november 2006 20:12 skrev Verner Kjærsgaard:
> Mandag 27 november 2006 19:33 skrev John P. New:
> > Verner,
> >
> > This is a problem with NFS and 2.6 kernels, fast server NICs and
> > comparatively slower client NICs. This will show up when the server has
> > a 1000Mb card and the client a 100Mb, or when the server has a 100Mb
> > card and the client a 10Mb.
> >
> > Essentially, you have to pass some options to the kernel on terminal
> > boot, and this varies depending on whether you are using etherboot or
> > PXE.
> >
> > See
> > http://wiki.ltsp.org/twiki/bin/view/Ltsp/NFS#NFS_Server_not_responding
> > for a deeper explanation of the problem and the cure.
//注:原因是server机和目标机网卡传输速率冲突,使得目标机需要大量时间复制大量数据包,其实如果目标机的网卡速率够大,则不用分那么多包,也不会冲突。


附 问题四:在测试时,“./progressbar -qws”后出现如Q3一样的提示 ,按Q3来处理。
以上参考了一些 “ 快乐的天空”的经验,他的网页是:
http://blog.chinaunix.net/u2/67519/showart_677885.html
他的
mount -t nfs -o intr,nolock,rsize=1024,wsize=1024 192.168.1.3/root/somedir /host
应该改成
mount -t nfs -o intr,nolock,rsize=1024,wsize=1024 192.168.1.3/root/somedir /client 

你可能感兴趣的:(nfs:server is not responding,still tryin)