NFS启动时报错Linux NFS:could not open connection for tcp6

1.1 启动时出现的错误

[root@znix ~]#/etc/init.d/nfs start
Shutting down NFS daemon:                                 [  OK  ]
Shutting down NFS mountd:                                  [  OK  ]
Shutting down NFS services:                                 [  OK  ]
Shutting down RPC idmapd:                                  [  OK  ]
Starting NFS services:                                           [  OK  ]
Starting NFS mountd: rpc.mountd: svc_tli_create: could not open connection for udp6
rpc.mountd: svc_tli_create: could not open connection for tcp6
rpc.mountd: svc_tli_create: could not open connection for udp6
rpc.mountd: svc_tli_create: could not open connection for tcp6
rpc.mountd: svc_tli_create: could not open connection for udp6
rpc.mountd: svc_tli_create: could not open connection for tcp6
                                                                          [  OK  ]
Starting NFS daemon: rpc.nfsd: address family inet6 not supported by protocol TCP
                                                                 [  OK  ]
Starting RPC idmapd:                                         [  OK  ]

根据启动提示可以获知，inet6地址族不被支持，原因是当前主机没有加载ipv6的模块，可以重新加载一遍ipv6模块解决这个问题。

由于我的系统不需要ipv6的支持，所以还可以通过下面的操作，取消NFS的ipv6调用。

1.2 【解决办法】编辑netconfig配置文件，注释相关TCP/UDP6的信息条目

[root@znix ~]#vim /etc/netconfig
 
#
# Entries consist of:
#
#       <network_id> <semantics> <flags> <protofamily> <protoname> \
#               <device> <nametoaddr_libs>
#
# The <device> and <nametoaddr_libs> fields are always empty in this
# implementation.
#
udp        tpi_clts      v     inet     udp     -       -
tcp        tpi_cots_ord  v     inet     tcp     -       -
#udp6       tpi_clts      v     inet6    udp     -       -
#tcp6       tpi_cots_ord  v     inet6    tcp     -       -
rawip      tpi_raw       -     inet      -      -       -
"/etc/netconfig" 19L, 769C written

1.3 重启服务验证

[root@znix ~]#/etc/init.d/nfs restart 
Shutting down NFS daemon:                                  [  OK  ]
Shutting down NFS mountd:                                  [  OK  ]
Shutting down NFS services:                                 [  OK  ]
Shutting down RPC idmapd:                                   [  OK  ]
Starting NFS services:                                           [  OK  ]
Starting NFS mountd:                                           [  OK  ]
Starting NFS daemon:                                          [  OK  ]
Starting RPC idmapd:                                           [  OK  ]