Calculating RADOS objects for RBD images

Ceph’s RBD (RADOS Block Device) is just a thin wrapper on top of RADOS, the object store of Ceph. It stripes (by default) over 4MB objects in RADOS. It’s very simple to calculate which RADOS object corresponds with which sector on your RBD image/block device. First you have to find out the block device’s object […]