At the moment, the register and shadow directories for Zebra are capped at 4GB. Per discussion on #koha, this should be changed to 20GB since it is a hard maximum, and Zebra will only ever use as much as is required.
Created attachment 3676 [details] [review] proposed patch
Created attachment 3765 [details] [review] equivalent patch for the packages This does the same as the other patch, however it does it for the config used by the packages.
Both patches pushed, please test and close
Seems to be working now. Closing.