I run apache on a linux machine.
I ran across a strange error: All the apache processes were in
uninterruptible sleep (state D in top program)
Max apache processes in my configuration is 150 and all of them were in
uninterruptible sleep. Therefore no one could enter my site (no more
available child processes)
When I try to stop the apache (/etc/init.d/httpd stop) I got a fail reply.
I had to reboot the computer.
Does anyone know why it has happened ? What to do against that ?