[CentOS] Suddenly increased my hard disk

[Gordon Messmer]

On 04/21/2016 07:49 PM, Chandran Manikandan wrote:
> Why it's happened like this environment and how to avoid it.

Generally the way to avoid it would be for your backup application to 
fail if the destination does not exist, and alert the admin.

For instance, rsnapshot has the "no_create_root" option to do exactly that.

If you're making backups with scripts of your own, just start with 
something like:
     test -d $destination || alert_admin_and_exit

...where $destination is a sub-directory under the mount point. Backing 
up directly to the mount point can make it more complicated to detect 
the presence of the mounted filesystem.