"When my production Web server, running Red Hat Enterprise Linux
(RHEL), began generating filesystem errors, I found my backup
system put to the ultimate test. My bare-metal restore saved the
day for me. Here's how you can put a similar scheme to work.
"On the surface, my Web server seemed to be running fine,
serving up Web pages normally. While performing some routine
maintenance, I happened to run an ls command in the root directory,
and it returned and empty listing--no directories or files.
Nothing. The ls command showed files in the /boot directory, so it
appeared there was some file system damage..."