Hi all, Our team at Cloud Foundry is building a RiakCS service for CF users and one of our deployments is seeing an issue with deleting objects from the blobstore.
We were seeing that our disk usage was approaching 100%, so we deleted some of the stale objects in the blobstore using s3cmd. If we run `s3cmd du`, it seems that we successfully freed up space, but when we ran `df` inside the RiakCS host, we still saw that our disk usage was close to 100%. We understand now that Riak will remove deleted keys asynchronously, but we haven't succeeded in configuring GC so that it is more responsive to deletions, despite having tried tweaking several parameters. On Friday, we uploaded several files and deleted them, hoping to see that they were gone from the disk on Monday. When we came back after the weekend, we saw that garbage collection still had not occurred. If it helps, you can look at our configuration for Riak <https://github.com/cloudfoundry/cf-riak-cs-release/blob/master/jobs/riak-cs/templates/riak.app.config.erb> and RiakCS <https://github.com/cloudfoundry/cf-riak-cs-release/blob/master/jobs/riak-cs/templates/riak_cs.app.config.erb> . Has anyone else encountered this issue, where garbage collection appears to never occur? Would be great to get help configuring RiakCS so that GC happens more often. Maybe there is a way to run GC manually when disk is filling up? Thanks, David & Raina CF Services Team
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