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Bug 1667565

Summary:	Improve description of sizing considerations for BlueStore
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Neha Ojha <nojha>
Component:	Documentation	Assignee:	Aron Gunn <agunn>
Status:	CLOSED CURRENTRELEASE	QA Contact:	ceph-qe-bugs <ceph-qe-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3.2	CC:	agunn, jdurgin, jharriga, kdreyer, mhackett, nojha
Target Milestone:	z1
Target Release:	3.2
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2019-08-26 06:55:26 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1668330

Description Neha Ojha 2019-01-18 20:16:32 UTC

Description of problem:

https://access.qa.redhat.com/documentation/en-us/red_hat_ceph_storage/3/html-single/administration_guide/#sizing-considerations-for-bluestore-management includes details about bluestore_cache_size, which users are not required to tune, with the introduction of osd_memory_target.

Remove old references and add the procedure to override bluestore block db size and bluestore block wal size using ceph-ansible, based on the guidelines already included in the documentation.

Comment 1 John Harrigan 2019-01-18 20:34:39 UTC

Here is an example of the syntax to use in 'group_vars/all.yml' to override the
values for db size and wal size

ceph_conf_overrides:
  osd:
    bluestore block db size: 14336000000
    bluestore block wal size: 2048000000