IDE backup on single host (was: Re: Software backup)
> We're using rsync to mirror a hot drive in our main server to a cold drive
> (one that is only mounted when backing up, and is briefly mounted read only
> for per file restoration).
...which reminds me of a related problem of mine. On my own system, I'm using
a fixed spare IDE hard drive for backups. Every night, Backup2l automatically
mounts it, makes an incremental backup and then unmount it again.
While not a remote backup scheme, this protects the system from most common
destructive mistakes and malfunctions like "sudo rm -rf * - whoops, What whas
I thinking?!!" or software that goes wild and does similar things.
But: all the backups can be erased with one simple line:
"dd if=/dev/zero of=/dev/<backup-disk>". :(
Does anyone know any way to make this more difficult without introducing a
remote host? Are there, for example, any Linux kernel options for "device
access passwords" or such?