Maintenance

monbooru looks after itself: the watcher keeps it in step with your folders and a nightly run tidies up. The tools under Settings -> Maintenance are for the times it can’t know what happened, like when you reorganized files with monbooru switched off or restored a backup.

Which tool when#

You moved or deleted files while monbooru wasn’t running. Press the sync button at the top right. Files that are gone are marked missing rather than forgotten, so their tags survive if they come back. When you know they won’t, Missing images removes them for good, and Empty folders lists the folders the move left behind so you can clear them out.

Thumbnails look wrong, or you restored a backup. Rebuild thumbnails makes them all again, manga pages included.

You’re turning on a feature for a library you already have. New files get this done as they arrive, so these catch up the old ones:

• Compute hashes for finding near-duplicates;
• Meta tags for the tags monbooru writes itself, and Remove meta tags to take them off again;
• Re-extract metadata when an update reads more from your files, such as generation data or comic archive details.

You want disk space or memory back. Vacuum database compacts the database file, and Free memory hands back the memory monbooru is holding, auto-tagger models included.

To clean up duplicate files, use the relations tools; see Relations.

Nightly schedule#

Settings -> Schedule runs a set of jobs every night, at 01:00 by default. Syncing and cleaning up leftover thumbnails are on out of the box. Auto-tagging, finding relation pairs and looking up unsourced images are there to switch on. With several galleries, you can pick which galleries each job runs on: your own photos might get the sync and skip the lookups. Run now starts the same run straight away.

If you’re running monbooru on a desktop, it may not be on at the scheduled time. Under Run time you can have a missed run happen a few minutes after monbooru starts or the machine wakes up, or drop the clock and run once a day at startup instead. Desktop installs start with the catch-up choice.

Something not working? See Troubleshooting.