Owner Permissions

I was running Kdar to back up the slash-root directory; When the /sys folder was processed, a number of files in many of the folders in the /sys tree had permissions set so that even the root owner was forbidden access.

What is in the files that even root can not access?

Are they needed if a recovery is every is required?

Some of the trees are:

Error while saving /sys/bus/pci/drivers/shpchp/unbind: Cannot open file : Permission denied
Error while saving /sys/bus/pci/drivers/ohci_hcd/new_id: Cannot open file : Permission denied
Error while saving /sys/bus/pci/drivers/ohci_hcd/bind: Cannot open file : Permission denied
Error while saving /sys/bus/pci/drivers/ohci_hcd/unbind: Cannot open file : Permission denied
Error while saving /sys/bus/pci/drivers/agpgart-sis/new_id: Cannot open file : Permission denied
Error while saving /sys/bus/pci/drivers/agpgart-sis/bind: Cannot open file : Permission denied
Error while saving /sys/bus/pci/drivers/agpgart-sis/unbind: Cannot open file : Permission denied[/b]

Pretty **** sure there not needed, think some of these are dynamic, I only say this as for chrooting you quite often need to bind sys, proc and dev.

Meaning you have none to start with but use the ones from the working system, at least that's how I see it.

I'd imagine you could ignore these from the backup. i.e the 3 above, but don't take my word for it, do a little research http://www.comptechdoc.org/os/linux/comman...x_crfilest.html

Edit It was the first one I found I'm sure there's better.

you don't need to backup /proc and /sys as these are dynamic places and you can do nothing with them when making a backup