直到今天，我的 vagrant 设置运行良好且流畅。但是发生了一些事情，我不知道是什么。
突然间，当我做 vagrant up 时，它挂在挂载 NFS 共享文件夹上。
我的猜测是，由于我的主机上的一些更新，有些东西坏了。以下是 vagrant up --debug 命令的输出以及过去 2 天的最新更新列表。
这是 vagrant 的输出：
==> default: Mounting NFS shared folders...
DEBUG ssh: Checking whether SSH is ready...
DEBUG ssh: Re-using SSH connection.
INFO ssh: SSH is ready!
DEBUG ssh: Re-using SSH connection.
INFO ssh: Execute: (sudo=false)
DEBUG ssh: Exit status: 0
DEBUG guest: Searching for cap: mount_nfs_folder
DEBUG guest: Checking in: ubuntu
DEBUG guest: Checking in: debian
DEBUG guest: Checking in: linux
DEBUG guest: Found cap: mount_nfs_folder in linux
INFO guest: Execute capability: mount_nfs_folder [#<Vagrant::Machine: default (VagrantPlugins::ProviderVirtualBox::Provider)>, "192.168.56.1", {"/home/vagrant"=>{:type=>:nfs, :mount_options=>["nolock,vers=3,udp,noatime,fsc,actimeo=1"], :guestpath=>"/home/vagrant", :hostpath=>"/home/stefan/NetBeansProjects/cargoplanning", :disabled=>false, :map_uid=>1000, :map_gid=>1000, :nfs_udp=>true, :nfs_version=>3, :uuid=>"2352560104", :linux__nfs_options=>["rw", "no_subtree_check", "all_squash", "anonuid=1000", "anongid=1000", "fsid=2352560104"]}}] (ubuntu)
DEBUG ssh: Checking whether SSH is ready...
DEBUG ssh: Re-using SSH connection.
INFO ssh: SSH is ready!
DEBUG ssh: Re-using SSH connection.
INFO ssh: Execute: (sudo=false)
DEBUG ssh: Exit status: 0
DEBUG guest: Searching for cap: shell_expand_guest_path
DEBUG guest: Checking in: ubuntu
DEBUG guest: Checking in: debian
DEBUG guest: Checking in: linux
DEBUG guest: Found cap: shell_expand_guest_path in linux
INFO guest: Execute capability: shell_expand_guest_path [#<Vagrant::Machine: default (VagrantPlugins::ProviderVirtualBox::Provider)>, "/home/vagrant"] (ubuntu)
DEBUG ssh: Re-using SSH connection.
INFO ssh: Execute: echo; printf /home/vagrant (sudo=false)
DEBUG ssh: Exit status: 0
DEBUG ssh: stdout:
/home/vagrant
DEBUG ssh: Re-using SSH connection.
INFO ssh: Execute: mkdir -p /home/vagrant (sudo=true)
DEBUG ssh: stderr: stdin: is not a tty
DEBUG ssh: Exit status: 0
DEBUG ssh: Re-using SSH connection.
INFO ssh: Execute: mount -o 'nolock,vers=3,udp,noatime,fsc,actimeo=1' 192.168.56.1:'/home/stefan/NetBeansProjects/cargoplanning' /home/vagrant (sudo=true)
DEBUG ssh: stderr: stdin: is not a tty
DEBUG ssh: Sending SSH keep-alive...
DEBUG ssh: Sending SSH keep-alive...
DEBUG ssh: Sending SSH keep-alive...
DEBUG ssh: Sending SSH keep-alive...
DEBUG ssh: Sending SSH keep-alive...
DEBUG ssh: Sending SSH keep-alive...
