10.100.XXX.XXX我正在尝试从我的构建客户端上的路径挂载一个文件夹： /home/projects/Polyspace_Server。我修改了我的/etc/fstab（我已经在另一个项目linux机器上尝试过这个并且它有效）：
10.100.XXX.XXX:/opt/Polyspace_Server/R2021b /home/projects/Polyspace_Server nfs defaults 0 0
但是当我尝试这样做时mount -a，我得到：
$ sudo mount -a sudo: unable to resolve host XXXXX: Connection timed out
mount: wrong fs type, bad option, bad superblock on
10.100.XXX.XXX:/opt/Polyspace_Server/R2021b,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)
In some cases useful info is found in syslog - try
dmesg | tail or so.
我该如何解决这个问题？
谢谢