今天升級(jí)了下vbox里的 centos后(yum update)后，出現(xiàn)以下問題：

Failed to mount folders in Linux guest. This is usually because

the "vboxsf" file system is not available. Please verify that

the guest additions are properly installed in the guest and

can work properly. The command attempted was:

mount -t vboxsf -o uid=`id -u vagrant`,gid=`getent group vagrant | cut -d: -f3` vagrant /vagrant

mount -t vboxsf -o uid=`id -u vagrant`,gid=`id -g vagrant` vagrant /vagrant

The error output from the last command was:

/sbin/mount.vboxsf: mounting failed with the error: No such device

修復(fù)方法：

1,sudo /etc/init.d/vboxadd setup

2,yum install virtualbox-guest-utils

vagrant reload后問題完美解決。