我试图让nfs在Ubuntu 16.04.2 LTS上工作。 我得到以下错误：
我已经尝试重新安装nfs-common，nfs-kernel-server和其他软件包按照其他论坛提供的说明，并不能得到它的工作。 由于这个原因，每次都通过dpkg安装失败。
May 17 11:32:44 ocrservernew systemd[1]: Mounting RPC Pipe File System... May 17 11:32:44 ocrservernew systemd[1]: Mounting NFSD configuration filesystem... May 17 11:32:44 ocrservernew mount[1962]: mount: unknown filesystem type 'rpc_pipefs' May 17 11:32:44 ocrservernew systemd[1]: run-rpc_pipefs.mount: Mount process exited, code=exi May 17 11:32:44 ocrservernew systemd[1]: Failed to mount RPC Pipe File System. May 17 11:32:44 ocrservernew systemd[1]: Dependency failed for RPC security service for NFS c May 17 11:32:44 ocrservernew mount[1963]: mount: unknown filesystem type 'nfsd' May 17 11:32:44 ocrservernew systemd[1]: rpc-gssd.service: Job rpc-gssd.service/start failed May 17 11:32:44 ocrservernew systemd[1]: Dependency failed for RPC security service for NFS s May 17 11:32:44 ocrservernew systemd[1]: rpc-svcgssd.service: Job rpc-svcgssd.service/start f May 17 11:32:44 ocrservernew systemd[1]: Dependency failed for NFSv4 ID-name mapping service. May 17 11:32:44 ocrservernew systemd[1]: nfs-idmapd.service: Job nfs-idmapd.service/start fai May 17 11:32:44 ocrservernew systemd[1]: run-rpc_pipefs.mount: Unit entered failed state. May 17 11:32:44 ocrservernew systemd[1]: proc-fs-nfsd.mount: Mount process exited, code=exite May 17 11:32:44 ocrservernew systemd[1]: Failed to mount NFSD configuration filesystem. May 17 11:32:44 ocrservernew systemd[1]: Dependency failed for NFS server and services. May 17 11:32:44 ocrservernew systemd[1]: Dependency failed for NFS Mount Daemon. May 17 11:32:44 ocrservernew systemd[1]: nfs-mountd.service: Job nfs-mountd.service/start fai May 17 11:32:44 ocrservernew systemd[1]: nfs-server.service: Job nfs-server.service/start fai May 17 11:32:44 ocrservernew systemd[1]: proc-fs-nfsd.mount: Unit entered failed state. May 17 11:32:44 ocrservernew sudo[1959]: pam_unix(sudo:session): session closed for user root 任何想法可能会出错？