Back up to disk automatically when disk is inserted

[Andrea Venturoli]

Hello.

In an installation of mine, I need the customer to be able to insert an 
HD and have the server take a backup automatically to it.

I labeled the HD and set up a devd configuration file like this:

notify 200 {
        action "/usr/local/sbin/backup_to_disk.shot";
        match "type" "CREATE";
        match "cdev" "label/BackupHD1";
};

It seems to works perfectly, except for a thing: if the machine boots 
with the disk already connected, it will start a backup.
Is there a way to avoid this?
Can devd distinguish already-existing-at-boot labels from 
after-boot-plugging-in?

Failing this, is there some way for my script to check whether the boot 
process has already ended?

  bye & Thanks
	av.