linux挂载nfs报错,Linux NFS挂载报错wrong fs type, bad option, bad superblock

1.故障现象

我的测试环境有一个NAS，之前配置都是按照测试需求在/etc/fstab里添加配置挂载选项：

vi /etc/fstab

192.168.1.2:/mnt/HD/HD_a2/Public /public nfs rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,actimeo=0,vers=3,timeo=600

创建/public目录后，直接mount挂载即可：

mkdir /public

mount -a

但今天在一套最小化安装的RHEL6.8上，挂载时遇到报错如下：

[root@test04 ~]# mount -a

mount: wrong fs type, bad option, bad superblock on 192.168.1.2:/mnt/HD/HD_a2/Public,

missing codepage or helper program, or other error

(for several filesystems (e.g. nfs, cifs) you might

need a /sbin/mount. helper program)

In some cases useful info is found in syslog - try

dmesg | tail or so

2.解决方案

解决方法是安装nfs-utils：

[root@test04 ~]# yum install nfs-utils

再次尝试挂载报错：

[root@test04 ~]# mount -a

mount.nfs: rpc.statd is not running but is required for remote locking.

mount.nfs: Either use '-o nolock' to keep locks local, or start statd.

mount.nfs: an incorrect mount option was specified

这个报错比较明显了，需检查下rpc.statd对应的rpcbind服务状态，启动这个服务并确保其之后开机自启动：

[root@test04 ~]# service rpcbind status

rpcbind is stopped

[root@test04 ~]# service rpcbind start

Starting rpcbind: [ OK ]

[root@test04 ~]# chkconfig --list rpcbind

rpcbind 0:off 1:off 2:on 3:on 4:on 5:on 6:off

再次尝试挂载成功：

[root@test04 ~]# mount -a

[root@test04 ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/vg_test04-lv_root

18G 829M 16G 5% /

tmpfs 939M 0 939M 0% /dev/shm

/dev/sda1 477M 39M 414M 9% /boot

192.168.1.2:/mnt/HD/HD_a2/Public

2.7T 1.6T 1.2T 57% /public