Block Storage (RBD)

Ceph RBD (RADOS Block Device) provides thin-provisioned, replicated block devices backed by your cluster. RBD volumes suit virtual machine disks, databases, and Kubernetes persistent volumes.

Typical workflow

Create a pool and an image, then map it on a client. Run these from an admin host with access to the cluster:

ceph osd pool create rbd-pool
rbd create rbd-pool/vol01 --size 100G
rbd map rbd-pool/vol01
mkfs.ext4 /dev/rbd0
mount /dev/rbd0 /mnt/vol01

Use with platforms

Virtual machines. Attach RBD images as VM disks.
Kubernetes. Use the Ceph CSI driver to provision RBD persistent volumes dynamically.
Databases. Back high-I/O databases with an NVMe pool. See Performance & Tiering.

Resource	URL
Ceph RBD (Block Storage)	https://docs.ceph.com/en/latest/rbd/
Ceph CSI	https://github.com/ceph/ceph-csi