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I have mounted an additional hard drive and all my files in /var are gone.
I added one more EBS hard drive in Amazon EC2. After mounting that drive my whole /var is gone.
I cannot even start Apache and also cannot use apt-get...
What should I do to restore it to be like before or at least make apt-get working?
It sounds like a) you accidentally mounted var to your EBS volume. Something like this:
mount /somevolume /var
you'll need to this:
umount /var
Or it is b) you accidentally unmounted var. Quickest way is to remount all (hopefully var still exists in fstab:
mount -a
We definitely need the steps you have done, but at this point, you really have nothing else to do short of trying to rebuild /var.
You need to hire someone who knows about Unix & Linux to manage your server.
We can only help so much - there is a minimum level of understanding necessary that you do not appear to have.
Did you mount your new volume over the top of your existing /var ? If you unmount your new 'hard drive' does it reappear ?
