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Storage Layout

Overview

Centerpoint uses a three-tier storage strategy:

  1. Local NVMe — fast system and application data storage
  2. Ceph OSD block devices — two NVMe drives contributing to a distributed Ceph cluster for object/block storage across the homelab
  3. NFS mounts from UnRAID — bulk media and data storage from the NAS server at 192.168.1.119

Local NVMe Drives

System Drive — nvme1n1 (1.8 TB)

The primary system disk, GPT-partitioned with LVM.

Partition Size Mount Point Purpose
nvme1n1p1 1 GB /boot/efi EFI System Partition
nvme1n1p2 2 GB /boot Boot partition
nvme1n1p3 (LVM PV) 1.8 TB — LVM physical volume
ubuntu-vg/ubuntu-lv 1.8 TB / Root filesystem

Current usage: 520 GB used / 1.3 TB free

This drive holds the OS, all Docker image layers (/var/lib/docker), container volumes, and the compose project files under /home/jeeves/docker/.

Ceph OSD — nvme0n1 (931.5 GB)

Configured as a Ceph OSD block device under LVM management. Mounted at /media/jeeves/1TB_Vol2.

The volume appears nearly empty at the filesystem level because Ceph manages the block device directly — actual utilised capacity is tracked by the Ceph cluster, not the OS mount point.

Ceph OSD — nvme2n1 (931.5 GB)

Second Ceph OSD block device, LVM-managed. Mounted at /media/jeeves/1TB_Vol1. Shows ~115 GB used at the OS level; the remainder is managed by Ceph.

Both Ceph OSD drives contribute to a distributed storage pool shared across the homelab. Ceph provides replication and data protection at the cluster level rather than at the individual host level.

NFS Mounts — UnRAID (192.168.1.119)

UnRAID at 192.168.1.119 hosts a 38 TB storage pool (~32 TB in use) and exports three NFS shares, auto-mounted on Centerpoint at boot.

Mount Point NFS Source Consumer Services
/mnt/Photos 192.168.1.119:/mnt/user/Photos Immich
/mnt/data 192.168.1.119:/mnt/user/Data General / miscellaneous
/mnt/Multimedia 192.168.1.119:/mnt/user/Multimedia Plex, Jellyfin, Stash, Audiobookshelf

These paths are bind-mounted into media containers — the media files themselves are never stored locally on Centerpoint.

Notes / Gotchas

  • If UnRAID is offline or rebooting, NFS mounts will stall and any container with a bind mount into /mnt/* will hang or fail to start until the mount recovers.
  • Docker named volumes (databases, config state, etc.) all reside on the system NVMe under /var/lib/docker/volumes/ — these are not automatically backed up to UnRAID.
  • The Ceph cluster should be monitored independently; degraded OSD status does not surface through Docker or the OS mounts in any obvious way.

Last Updated: 2026-06-16

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