I have an older backup application which invokes wodim to burn optical backups.  I haven't run it for a while, and when I tried now, wodim throws the following error:

Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits

and the burn aborts about halfway through.

Googling this, I find that this problem has been around for several years, and has to do with wodim not running as root.  Workarounds involving /etc/wodim.conf have been suggested, but I could not make them work.

The workaround that *does* work is to set the sticky bit on the wodim executable, e. g. :

       chmod +s /usr/bin/wodim

We might consider doing this as part of our wodim install.