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Table of Contents

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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Code Block
languagebash
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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