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Guidelines
- Volume types
- ceph-ec: ceph in EC 4+2 using hdd. Exposed to all projects.
- By default 200 GB of quota per project for the ceph-ec type for all projects
- Explicitly set 0 GB for all other volume types
- If more disk space is needed use the ceph-ec volume type
- Other volume types available:
- ceph: ceph in replica 3 using hdd. This is exposed to all projects, but it should be used only for old/existing volumes (in general no new volumes should be created using this volume type)
- ceph-ssd-r3: ceph in replica 3 using ssd. This is exposed only to some projects
- By default 200 GB of quota per project for the ceph-ec type for all projects
- If more disk space is needed use the ceph-ec volume type
- ceph-ssd-r3 usable only for particular use cases and only for selected users
How to see quota usage
To check the cinder quota and the actual usage for a project:
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cinder quota-update --gigabytes 400 <project-id> cinder quota-update --gigabytes 200 --volume-type ceph <project-id> cinder quota-update --gigabytes 0 --volume-type ceph-ec <project-id> cinder quota-update --gigabytes 0 --volume-type iscsi-infnpd <project-id> cinder quota-update --gigabytes 200 --volume-type equallogic-unipd <project-id> cinder quota-update --per-volume-gigabytes 5000 <project-id> |
NB: Please note that the overall quota (gigabytes) also must be updated. Its value must be the sum of the quotas of all backends.
How to expose the ceph-ssd-r3 volume type
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