Saturday, January 24, 2015

OpenStack Cinder with Ceph under the hood [feedly]



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OpenStack Cinder with Ceph under the hood
// Ceph

What's happening under the hood while playing with Cinder and Ceph? Answer table :-).


ACTION RESULTS
Create a volume New RBD image gets created in the pool configured in your cinder.conf.
Create a volume backup Create a new volume in the destination pool, the first backup is a full copy, the new ones will be incremental.
Create a volume from a snapshot (with rbd_flatten_volume_from_snapshot=false) Creates a new volume. Will be a clone in Ceph and the parent will be the snapshot.
Create a snapshot from a volume (with rbd_flatten_volume_from_snapshot=true) Creates a new volume. Will be a new RBD image in Ceph.
Create a volume from a volume The source volume gets snapshotted and the volume will be clone of this snapshot.
Create volume from image If the image is in a Ceph pool and its location exposed then the volume will be a clone.
Create a snapshot Creates an RBD snapshot.

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Todd Pigram

Data Center Engineer  

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Architects of the anyplace workspace