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  • Editing the config file worked for me. Did you restart systemd-journald.service? Maybe post the entire journald.conf file? Commented Jul 12, 2022 at 17:19
  • yes. After restarting, the max changed from 429.5M to 1.0G. That is the entire journald.conf, rest of them are commented out by default Commented Jul 12, 2022 at 18:00
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    In addition to SystemMaxUse the documentation also lists SystemKeepFree (which you may want to minimize) and SystemMaxFileSize for individual file limits (which you may need to increase?). The documentation also indicates that the values may be capped, somehow, so studying the source code might be necessary. Commented Jul 12, 2022 at 18:16
  • SystemKeepFree, is supposed to default to 15%, but I have more than 90% free in the filesystem. Not sure why the size is capped to 1.0G. Commented Jul 12, 2022 at 19:32
  • What distro/version is this on? It might help track down the issue since it could be a default security feature limiting your journal file size. Commented Jul 29, 2022 at 20:56