Yes, there is a change being made in GitHub to correct that. Moving backup export and uploads location to /var/opt/emoncms/backup · Issue #51 · emoncms/backup · GitHub
I’m not at home but you need to change the location in the config.cfg under the backup module, but I cannot check where that is.
I can check later.
I am surprised just that file is filling the rootfs. I posted here a command that will find the largest files on your system.
I’d say yes to that! Does also depend on how often you are feeding the data. if 240 @ 10s then yes definitely!