tar exclude error-output on specific paths

Question

Is it possible to ignore error-messages like: /etc/some-tool/some-log: file changed as we read it on the same way you can use exclude to exclude files?

I'm using tar to do system-backups, redirecting stdout and stderr into log-files. I Got some direcotires which contain log-files. Simply don't want to have the same error-lines (like shown above) every day in my result file.

So far couldn't find a command on man tar which could help me.

Answer 1

I wrote a script which analyzes the output log and decides if it's an error or not. Ignoring warnings on a global scope is not what I was looking for. Took me some time but it's the safest method imo.