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OS X 上的 NFS 共享

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OS X 上的 NFS 共享

我尝试连接NFS version 4我的共享Mac OS X 10.7但没有成功：

$ pwd
/Volumes
$ mkdir NFS
$ sudo mount_nfs -o resvport,vers=4 192.168.0.1:/var/teterevkov /Volumes/NFS
mount_nfs: can't mount /var/teterevkov from 172.19.51.50 onto /Volumes/NFS: No such file or directory

NFS version 3因此，使用以下命令连接时没有问题

$ sudo mount_nfs -o resvport,vers=3 192.168.0.1:/var/teterevkov /Volumes/NFS

在服务器端我有

$ uname -a
Linux 2.6.32.24 #19 SMP Tue Mar 13 14:00:24 MSK 2012 x86_64 GNU/Linux
$
$ cat /etc/exports 
# /etc/exports: NFS file systems being exported.  See exports(5).
/var/teterevkov 192.168.0.2(rw,no_root_squash,no_subtree_check,async)

该路径/var/teterevkov为有效存在路径。linux内核有NFS version 4 support以下统计信息nfsstat -4：

nfsstat -4
Server rpc stats:
calls      badcalls   badauth    badclnt    xdrcall
592097     0          0          0          0       

Server nfs v4:
null         compound     
9        24% 28       75%

Server nfs v4 operations:
op0-unused   op1-unused   op2-future   access       close        commit       
0         0% 0         0% 0         0% 0         0% 0         0% 0         0% 
create       delegpurge   delegreturn  getattr      getfh        link         
0         0% 0         0% 0         0% 0         0% 0         0% 0         0% 
lock         lockt        locku        lookup       lookup_root  nverify      
0         0% 0         0% 0         0% 0         0% 0         0% 0         0% 
open         openattr     open_conf    open_dgrd    putfh        putpubfh     
0         0% 0         0% 0         0% 0         0% 0         0% 0         0% 
putrootfh    read         readdir      readlink     remove       rename       
10       35% 0         0% 0         0% 0         0% 0         0% 0         0% 
renew        restorefh    savefh       secinfo      setattr      setcltid     
0         0% 0         0% 0         0% 0         0% 0         0% 9        32% 
setcltidconf verify       write        rellockowner bc_ctl       bind_conn    
9        32% 0         0% 0         0% 0         0% 0         0% 0         0% 
exchange_id  create_ses   destroy_ses  free_stateid getdirdeleg  getdevinfo   
0         0% 0         0% 0         0% 0         0% 0         0% 0         0% 
getdevlist   layoutcommit layoutget    layoutreturn secinfononam sequence     
0         0% 0         0% 0         0% 0         0% 0         0% 0         0% 
set_ssv      test_stateid want_deleg   destroy_clid reclaim_comp 
0         0% 0         0% 0         0% 0         0% 0         0%

那么，有什么问题NFS version 4？

答案1

NFSv4 具有整个导出文件系统的“虚拟”根的概念。带有 fsid=root 的导出挂载点将用作此“虚拟”根。

尝试将该fsid=root选项添加到您的 /etc/exports 服务器配置文件中，然后通过运行重新加载导出目录列表exportfs -arv。您可能需要重新启动 nfsd 服务才能使更改生效。

# /etc/exports
# Example for NFSv4: (insecure option for OS X, or use resvport on client)
/srv/nfs4    *(rw,sync,fsid=root,no_subtree_check,insecure)

现在，您可以运行之前尝试过的相同 mount 命令，只不过您现在想要挂载导出的文件系统的虚拟根目录，如下所示：

# sudo mount_nfs -o resvport,vers=4 192.168.0.1:/ /Volumes/NFS

答案2

我已经找到了解决方案帮助中心。

NFSv4 exports exist in a single pseudo filesystem, where the real directories are mounted with the --bind option。

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