Mac OS X Server Samba crash

My Mac pro shutdown because power cut last night.

Today. Windows user can ping me by computer name. But they can’t visit my share folder. There are some error in log:

Samba: ERROR: failed to setup guest info.

When I open /etc/smb.conf. I found it’s blank file. OK! So. To fix this:

#!bash
sudo cp -p /etc/smb.conf.template /etc/smb.conf

Then it works.