Is exists any way to get available free space in Ceph cluster from amazon S3 API? I need to implement automatic deletion of outdated objects from bucket when Ceph cluster has no space to store new objects. I know exists ways to calculate used space in bucket, but its logic data size and I can't compare them to raw size of cluster disks.
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From S3 perspective you can't check free space.
Ceph has implemented expiration mechanism, which will delete outdated objects from your object storage. Check the doc: http://docs.ceph.com/docs/master/radosgw/s3/#features-support
Rafał Wądołowski
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Thanks. Ceph expiration mechanism is not solution for my problem, I need to implement complicated expiration logic like quotas etc. Will search another solution (not S3 and not Ceph) for this task. – Андрей Царев May 12 '19 at 20:12