Overview
Administrators access storage management through Admin → Volume, which provides a cross-project view of all volumes, snapshots, backups, and volume types. Admin operations include managing volume types (storage tiers), QoS specs, and intervening in volumes across all projects.Prerequisites
adminrole- Navigate to Admin → Volume for the admin storage view
Admin Volume List
The admin view shows all volumes across all projects:| Column | Description |
|---|---|
| Name | Volume name |
| Description | Optional description |
| Size | Volume size in GB |
| Status | Available, In-use, Error, Deleting |
| Type | Volume type (storage tier) |
| Attached To | Instance and device path |
| Availability Zone | AZ the volume resides in |
| Bootable | Whether bootable |
| Encrypted | Encryption status |
| Project | Owning project |
Volume Types
Volume types map to Cinder backends and define storage characteristics visible to users as named tiers.Create a Volume Type
Configure the type
| Field | Description |
|---|---|
| Name | User-visible tier name (e.g., ssd, hdd, encrypted) |
| Description | Optional description shown to users |
| Public | Available to all projects (toggle off for project-specific types) |
Add extra specs
After creation, click the volume type name → View Extra Specs → Create. Extra specs map the type to a specific backend:
| Key | Example Value | Description |
|---|---|---|
volume_backend_name | ceph-ssd | Match Cinder backend’s volume_backend_name |
replication_enabled | True | Enable backend replication |
encrypted | True | Mark as encrypted type (informational) |
Set Default Volume Type
Set project-level default volume type
QoS Specs
Quality of Service specs limit IOPS and throughput for volumes — preventing noisy neighbor effects in multi-tenant environments.Create a QoS spec
Navigate to Admin → Volume → QoS Specs and click Create QoS Spec. Enter a name (e.g.,
bronze-qos).Add QoS keys
After creation, click the QoS spec name → Manage Specs. Common keys:
| Key | Example Value | Description |
|---|---|---|
total_iops_sec | 1000 | Maximum IOPS (read + write) |
total_bytes_sec | 104857600 | Maximum throughput (100 MB/s) |
read_iops_sec | 500 | Read IOPS limit |
write_iops_sec | 500 | Write IOPS limit |
consumer | front-end | Apply at front-end (hypervisor) or back-end (storage) |
Admin Volume Operations
Admins can perform operations on volumes in any project:| Operation | When to Use |
|---|---|
| Reset Volume State | Volume stuck in Deleting or Error — reset to Available |
| Migrate Volume | Move volume to a different backend (online or offline) |
| Upload to Image | Create a Glance image from a volume |
| Transfer to Project | Move volume ownership between projects |
Reset a stuck volume state
Migrate volume to a different backend
Next Steps
Block Storage Admin Guide
Full Cinder administration — backends, tiers, and migration
Volume QoS
Detailed QoS policy configuration
Storage Tiers
Automatic and manual storage tiering with Ceph device classes
Encryption
Enable at-rest encryption for volume types