21821c1658
Collecting stats for provisioned_capacity_gb takes a long time since we
have to query each individual image for the provisioned size. If we are
using the pool just for Cinder and/or are willing to accept a potential
deviation in Cinder stats we could just not retrieve this information
and calculate this based on the DB information for the volumes.
This patch adds configuration option `rbd_exclusive_cinder_pool` that
allows us to disable the size collection and thus improve the stats
reporting speed.
Change-Id: I32c7746fa9149bce6cdec96ee9aa87b303de4271
Closes-Bug: #1704106
(cherry picked from commit f33baccc35)
16 lines
665 B
YAML
16 lines
665 B
YAML
---
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features:
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When using the RBD pool exclusively for Cinder we can now set
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`rbd_exclusive_cinder_pool` to `true` and Cinder will use DB information
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to calculate provisioned size instead of querying all volumes in the
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backend, which will reduce the load on the Ceph cluster and the volume
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service.
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issues:
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If RBD stats collection is taking too long in your environment maybe even
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leading to the service appearing as down you'll want to use the
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`rbd_exclusive_cinder_pool = true` configuration option if you are using
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the pool exclusively for Cinder and maybe even if you are not and can live
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with the innacuracy.
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