I have configured some bind mounts on all users's home directories to access a shared directory (or parts of it) that is somewhere else in the file system, so I have entries like these on my fstab file:
/application/data/repository /home/sergio/repository none bind /application/data/repository /home/mario/repository none bind /application/data/repository/reports /home/carlos/reports none bind
Yesterday before I left the office all the binds where working as normal, however when I came to work today one of my users reported me that he couldn't access the shared folder. When I went into the server I discovered that all bind mounts were unmounted.
I went searching through the logs to see if there were any sign of someone else unmounting the bind mounts but nothing, the server did not reboot, no signs of intrusion attempts. No signs of errors in any of the log files.
I'm puzzled because I don't understand how can all the bind mounts get unmounted just like that. Just to be sure I changed all users's passwords and reviewed the firewall rules to make sure only authorized location have ssh access to the server.
Do you know of any reason for this? Any reason for the system to unmount the bind mounts?
I searched through the net but can find anyone reporting this kind of incident.