backing up /sys
fab at s-tunnel.com
Thu Jun 30 13:45:29 UTC 2005
Bob McClure Jr wrote:
>I'm in the process of checking out a CD/DVD-based backup package.
>In my first test, I noticed in the error log a bunch of carps about
>file sizes changing in /sys. I know that /proc is a pseudo filesystem
>comprising nothing but hooks into the kernel, and I know that I don't
>want to back that up. /sys looks like the same sort of thing, full of
>directories that take up 0 bytes, down to files that ls reports as
>Is it safe to assume I don't want to backup /sys?
/sys is a mount point for sysfs filesystem. Sysfs is a virtual
filesystem similar to procfs in 2.6 line of Linux kernels.
From the kerlnel documentation (menuconfig help):
The sysfs filesystem is a virtual filesystem that the kernel uses to
export internal kernel objects, their attributes, and their
relationships to one another.
Therefore, you do not need to backup it, the filesystem and its content
will be recreated by kernel when mounted.
Brainbench MVP for Linux
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