在 Red Hat Enterprise Linux 7 上挂载一个 NFS 共享会导致错误 "mount(2): No such device"

Issue

• 使用 mount.nfs 挂载会导致错误 'No such device':

mount -vvv hostname:/share /mnt
mount.nfs: timeout set for Tue Oct 14 11:46:54 2014
mount.nfs: trying text-based options 'vers=4,addr=192.168.122.143,clientaddr=192.168.122.129'
mount.nfs: mount(2): No such device
mount.nfs: No such device

• 使用 modprobe 加载 nfs 模块不会生成任何输出，并似乎没有起任何作用：

# modprobe -v nfs
# lsmod | grep nfs
<nothing>