ceph-volume

Deploy OSDs with different device technologies like lvm or physical disks using pluggable tools (lvm itself is treated like a plugin) and trying to follow a predictable, and robust way of preparing, activating, and starting OSDs.

Overview | Plugin Guide |

Command Line Subcommands There is currently support for lvm, and plain disks (with GPT partitions) that may have been deployed with ceph-disk.

• lvm
• simple

Migrating

Starting on Ceph version 12.2.2, ceph-disk is deprecated. Deprecation warnings will show up that will link to this page. It is strongly suggested that users start consuming ceph-volume.

New deployments

For new deployments, lvm is recommended, it can use any logical volume as input for data OSDs, or it can setup a minimal/naive logical volume from a device.

Existing OSDs

If the cluster has OSDs that were provisioned with ceph-disk, then ceph-volume can take over the management of these with simple. A scan is done on the data device or OSD directory, and ceph-disk is fully disabled.

Encrypted OSDs

If using encryption with OSDs, there is currently no support in ceph-volume for this scenario (although support for this is coming soon). In this case, it is OK to continue to use ceph-disk until ceph-volume fully supports it. This page will be updated when that happens.