Set Cache Limit or Expiration for S3FS

Question

I have this option "-o use_cache=/tmp" set when I mount my S3 bucket. Is there a limit on how much room it will try to use in tmp? Is there a way to limit that or otherwise expire items after X amount of time?

Answer 1

You could use the (unsupported) sample_delcache.sh script from the s3fs-fuse project. Set up a cron job to run it every so often. There'd still be the risk of running out space (or inodes, as I just did) before the next time you ran the cleanup script, but you should be able to dial it in.

Answer 2

At this time there is an option ensure_diskfree to preserve some space.