tar: file changed as we read it

Question

I am using make and tar to backup. When executing makefile, tar command shows file changed as we read it. In this case,

Answer 1

It worked for me by adding a simple sleep timeout of 20 sec. This might happen if your source directory is still writing. Hence put a sleep so that the backup would finish and then tar should work fine. This also helped me in getting the right exit status.

sleep 20
tar -czf ${DB}.${DATE}.tgz ./${DB}.${DATE}