2014-01-23 16:14:44 +00:00
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options:
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2014-02-12 09:47:22 +00:00
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ceph-osd-replication-count:
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2014-10-08 11:22:00 +01:00
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default: 3
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2014-02-12 09:47:22 +00:00
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type: int
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description: |
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This value dictates the number of replicas ceph must make of any
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object it stores withing the cinder rbd pool. Of course, this only
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applies if using Ceph as a backend store. Note that once the cinder
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rbd pool has been created, changing this value will not have any
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effect (although it can be changed in ceph by manually configuring
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your ceph cluster).
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2016-06-28 12:07:49 -07:00
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ceph-pool-weight:
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type: int
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default: 40
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description: |
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Defines a relative weighting of the pool as a percentage of the total
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amount of data in the Ceph cluster. This effectively weights the number
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of placement groups for the pool created to be appropriately portioned
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to the amount of data expected. For example, if the ephemeral volumes
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for the OpenStack compute instances are expected to take up 20% of the
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overall configuration then this value would be specified as 20. Note -
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it is important to choose an appropriate value for the pool weight as
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this directly affects the number of placement groups which will be
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created for the pool. The number of placement groups for a pool can
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only be increased, never decreased - so it is important to identify the
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percent of data that will likely reside in the pool.
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