AIX 挂载nfs提示vmount: Not owner

exp到一半，断掉了

发现nfs磁盘也不见了

mount -o rw,bg,hard,nointr,rsize=32768,wsize=32768,proto=tcp,vers=3,timeo=600 172.xx.xx.xx:/orabak /orabak

就报了vmount: Not owner

 

查了google，

 

问题描述:
Linux 服务器上共享了/nfs 这个目录，如何将这个共享目录正确的挂载到AIX 的/data/wuxf 这个挂点。

解答:

1.在Linux 服务器上共享/nfs 这个目录, 在/etc/exports文件定义：
/nfs *(rw,no_root_squash,sync)
hostname : testcom
#service portmap start
#service nfslock start
#service nfs start

2.在AIX 端检查Linux的nfs 共享目录有没有存在：
whoselife@/data>showmount -e testcom
*:/nfs
如果AIX上portmap 没有启动，运行showmount -e会出现如下报错：
whoselife@/data>showmount -e
whoselife: RPC: 1832-019 Program not registered
如果出现1832-019的报错需要重新启动portmap 和nfs 的服务：

whoselife@/data>stopsrc -g nfs
0513-044 The biod Subsystem was requested to stop.
0513-044 The nfsd Subsystem was requested to stop.
0513-044 The rpc.mountd Subsystem was requested to stop.
0513-044 The rpc.lockd Subsystem was requested to stop.
0513-044 The rpc.statd Subsystem was requested to stop.
whoselife@/data>stopsrc -s portmap
0513-044 The portmap Subsystem was requested to stop.

whoselife@/data>startsrc -s portmap
0513-059 The portmap Subsystem has been started. Subsystem PID is 954432.
whoselife@/data>startsrc -g nfs
0513-059 The biod Subsystem has been started. Subsystem PID is 344286.
0513-059 The nfsd Subsystem has been started. Subsystem PID is 618542.
0513-059 The rpc.mountd Subsystem has been started. Subsystem PID is 975026.
0513-059 The nfsrgyd Subsystem has been started. Subsystem PID is 380956.
0513-059 The gssd Subsystem has been started. Subsystem PID is 380958.
0513-059 The rpc.lockd Subsystem has been started. Subsystem PID is 380960.
0513-059 The rpc.statd Subsystem has been started. Subsystem PID is 143412.
whoselife@/data>showmount -e testcom
*:/nfs
这样就成功检测到了共享文件。

3. 检查/etc/hosts ,确定服务器和客户机的主机名地址可以正确解析。

whoselife@/>traceroute testcom
trying to get source for testcom
source should be 9.123.x.y
traceroute to testcom (9.123.a.b) from 9.123.x.4 (9.123.x.y), 30 hops max
outgoing MTU = 1500
1 9.123.x.4 (9.123.x.4) 1 ms 1 ms 1 ms
2 testcom (9.123.130.34) 1 ms 1 ms 1 ms

whoselife@/>host 9.123.a.b
testcom is 9.123.a.b

whoselife@/>host 9.123.x.y
whoselife is 9.123.x.y

如果检查到0827-803的错误，需要在服务器和客户机的/etc/hosts加入两边正确的主机名和ip地址。
whoselife@/data>host 9.123.131.147
host: 0827-803 Cannot find address 9.123.131.147.

4。挂载Linux nfs 文件系统到AIX 的目录/data/wuxf
whoselife@/>mount testcom:/nfs /data/wuxf

如果出现下列不能挂载的问题:
whoselife@/>mount testcom:/nfs/ data/wuxf
mount: giving up on：
testcom:/nfs/
vmount: Not owner

需要检查nfso -a：
whoselife@/data>nfso -a | grep nfs_use_reserved_ports
nfs_use_reserved_ports = 0

默认情况,AIX系统执行mount命令请求时并不使用预先定义好的端口，设置nfs_use_reserved_ports后可使用1024以下的预定义端口。
whoselife@/>nfso -o nfs_use_reserved_ports=1
Setting nfs_use_reserved_ports to 1

这样AIX 就可以正确挂载Linux 的nfs 共享文件了。

 

发现执行nfso -a | grep nfs_use_reserved_ports
nfs_use_reserved_ports = 0

修改后，nfs就可以mount上去了。