Category Archives: Ceph

OpenStack with Ceph: Clean up orphaned instances

Working with Ceph and OpenStack can make your life as a cloud administrator really easy, but sometimes you discover its downsides. From time to time I share some findings in this blog, it’s a nice documentation for me and hopefully … Continue reading

Posted in Ceph, OpenStack | Tagged , , | Leave a comment

Migrating BlueStore’s block.db

Ceph’s BlueStore storage engine is rather new, so the big wave of migrations because of failing block devices is still ahead – on the other hand, non-optimum device selection because of missing experience or “heritage environments” may have left you … Continue reading

Posted in BlueStore, Ceph | Leave a comment

Resetting an existing BlueStore OSD

During an attempt to migrate some OSDs’ BlueStore RocksDB to a different block device, we noticed (previously undetected) fatal read errors on the existing RocksDB. The only way to recover from this situation is to remove the OSD and rebuild … Continue reading

Posted in BlueStore, Ceph | Leave a comment