1、查看NFS报错日志

操作系统： rhel7.4

# systemctl restart nfs-server
# tail -200f /var/log/message
Dec 30 10:24:14 test systemd: Cannot add dependency job for unit iptables.service, ignoring: Unit is masked.
Dec 30 10:24:14 test systemd: Starting Preprocess NFS configuration...
Dec 30 10:24:14 test systemd: Mounting /nfs/test...
Dec 30 10:24:14 test kernel: XFS (zd208): Invalid superblock magic number
Dec 30 10:24:14 test mount: mount: wrong fs type, bad option, bad superblock on /dev/zd208,
Dec 30 10:24:14 test mount: missing codepage or helper program, or other error
Dec 30 10:24:14 test mount: In some cases useful info is found in syslog - try
Dec 30 10:24:14 test mount: dmesg | tail or so.
Dec 30 10:24:14 test systemd: Started Preprocess NFS configuration.
Dec 30 10:24:14 test systemd: nfs-test.mount mount process exited, code=exited status=32
Dec 30 10:24:14 test systemd: Failed to mount /nfs/test.
Dec 30 10:24:14 test systemd: Dependency failed for NFS server and services.
Dec 30 10:24:14 test systemd: Dependency failed for NFSv4 ID-name mapping service.
Dec 30 10:24:14 test systemd: Job nfs-idmapd.service/start failed with result 'dependency'.
Dec 30 10:24:14 test systemd: Dependency failed for NFS Mount Daemon.
Dec 30 10:24:14 test systemd: Job nfs-mountd.service/start failed with result 'dependency'.
Dec 30 10:24:14 test systemd: Job nfs-server.service/start failed with result 'dependency'.
Dec 30 10:24:14 test systemd: Unit nfs-test.mount entered failed state.
Dec 30 10:24:14 test systemd: Starting Notify NFS peers of a restart...
Dec 30 10:24:14 test sm-notify[361161]: Version 1.3.0 starting
Dec 30 10:24:14 test sm-notify[361161]: Already notifying clients; Exiting!
Dec 30 10:24:14 test systemd: Started Notify NFS peers of a restart.

2、查看挂载信息

发现文件中并无/dev/zd208挂载信息！！！

# df -h
# cat /etc/exports
# cat /etc/fstab

3、解决方案

创建rpcbind.service的符号链接,其实就是做个rpcbind.service的软连接用ln -s命令也行！！！

# systemctl add-wants multi-user.target rpcbind.service
Created symlink from /etc/systemd/system/multi-user.target.wants/rpcbind.service to /usr/lib/systemd/system/rpcbind. service.                                                                                 

# systemctl restart nfs-server