在执行命令如下：
mount -t nfs localhost:/home/xuwq/minilinux/system /mnt
出现的错误：
mount.nfs: access denied by server while mounting localhost:/home/xuwq/minilinux/system
用以下的命令查看了日志，结果如下：
root@xuwq:/var/log# cat /var/log/syslog | grep mount Dec 2 13:12:10 xuwq rpc.mountd[2987]: Caught signal 15, un-registering and exiting. Dec 2 13:12:10 xuwq rpc.mountd[3635]: Version 1.2.8 starting Dec 2 13:14:32 xuwq rpc.mountd[3635]: No host name given with /home/xuwq/minilinux/*(rw,sync,no_root_sqush) (ro,sync,wdelay,hide,nocrossmnt,secure,root_squash,no_all_squash,no_subtree_check,secure_locks,acl,anonuid=65534,anongid=65534), suggest *(ro,sync,wdelay,hide,nocrossmnt,secure,root_squash,no_all_squash,no_subtree_check,secure_locks,acl,anonuid=65534,anongid=65534) to avoid warning Dec 2 13:14:32 xuwq rpc.mountd[3635]: refused mount request from 127.0.0.1 for /home/xuwq/minilinux/system (/): not exported Dec 2 13:20:49 xuwq rpc.mountd[3635]: refused mount request from 127.0.0.1 for /home/xuwq/minilinux/system (/): not exported Dec 2 13:22:10 xuwq rpc.mountd[3635]: refused mount request from 127.0.0.1 for /home/xuwq/minilinux/system (/): not exported Dec 2 13:23:01 xuwq rpc.mountd[3635]: refused mount request from 127.0.0.1 for /root/gongxiang (/): not exported Dec 2 13:24:43 xuwq rpc.mountd[3635]: refused mount request from 127.0.0.1 for /home/xuwq/minilinux/system (/): <span style="color:#FF0000;">not exported</span><u></u>
通过日志可以看出是因为/home/xuwq/minilinux/system目录没有被共享，通过对比/etc/export文件找出了原因，原来是/etc/export文件中的共享目录输入错误。
错误的/etc/exports文件内容：
# /etc/exports: the access control list for filesystems which may be exported # to NFS clients. See exports(5). # # Example for NFSv2 and NFSv3: # /srv/homes hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subt ree_check) # # Example for NFSv4: # /srv/nfs4 gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check) # /srv/nfs4/homes gss/krb5i(rw,sync,no_subtree_check) # <span style="color:#FF0000;">/home/xuwq/minilinux/*(rw,sync,no_root_sqush)</span>
正确的/etc/exports文件：
# /etc/exports: the access control list for filesystems which may be exported # to NFS clients. See exports(5). # # Example for NFSv2 and NFSv3: # /srv/homes hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subt ree_check) # # Example for NFSv4: # /srv/nfs4 gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check) # /srv/nfs4/homes gss/krb5i(rw,sync,no_subtree_check) # <span style="color:#FF0000;">/home/xuwq/minilinux/system/*(rw,sync,no_root_sqush)</span>
红色字体的为我的 共享目录。
重启nfs服务后再次执行如下命令，挂在成功：
mount -t nfs localhost:/home/xuwq/minilinux/system /mnt
使用df命令可以看到已挂在成功：
root@xuwq:/var/log# df 文件系统 1K-块 已用 可用 已用% 挂载点 udev 482076 0 482076 0% /dev tmpfs 99888 5436 94452 6% /run /dev/sda1 37213744 13457468 21842832 39% / tmpfs 499432 148 499284 1% /dev/shm tmpfs 5120 4 5116 1% /run/lock tmpfs 499432 0 499432 0% /sys/fs/cgroup cgmfs 100 0 100 0% /run/cgmanager/fs tmpfs 99888 32 99856 1% /run/user/119 tmpfs 99888 0 99888 0% /run/user/1000 <span style="color:#FF0000;">localhost:/home/xuwq/minilinux/system 37213824 13457536 21842944 39% /mnt</span>