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Bug 1596368

Summary:	Manila pools are set with 128 placement groups, ignoring CephPoolDefaultPgNum parameter
Product:	Red Hat OpenStack	Reporter:	Yogev Rabl <yrabl>
Component:	openstack-tripleo-heat-templates	Assignee:	Giulio Fidente <gfidente>
Status:	CLOSED ERRATA	QA Contact:	Yogev Rabl <yrabl>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	13.0 (Queens)	CC:	gfidente, mburns
Target Milestone:	Upstream M3	Keywords:	Triaged
Target Release:	16.0 (Train on RHEL 8.1)
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	openstack-tripleo-heat-templates-11.3.1-0.20191126041653.414d4d9.el8ost.noarch.rpm	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-02-06 14:37:22 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Yogev Rabl 2018-06-28 17:27:53 UTC

Description of problem:
The deployment of the overcloud failed due to the insufficient amount of OSDs per PGs. In this deployment, CephPoolDefaultPgNum is set to 32. 
All of the OpenStack related pools, volumes, images and vms are set with 32 PGs as needed, but the manila_data pool was set to 128. 


Version-Release number of selected component (if applicable):
ceph-ansible-3.1.0-0.1.rc9.el7cp.noarch
openstack-tripleo-validations-8.4.1-5.el7ost.noarch
python-tripleoclient-9.2.1-12.el7ost.noarch
puppet-tripleo-8.3.2-8.el7ost.noarch
openstack-tripleo-common-containers-8.6.1-20.el7ost.noarch
openstack-tripleo-puppet-elements-8.0.0-2.el7ost.noarch
openstack-tripleo-common-8.6.1-20.el7ost.noarch
openstack-tripleo-heat-templates-8.0.2-38.el7ost.noarch


How reproducible:
100%

Steps to Reproduce:
1. Set the storage environment file with the parameter CephPoolDefaultPgNum to 32 
2. call the environment files:
/usr/share/openstack-tripleo-heat-templates/environments/manila-cephfsganesha-config-docker.yaml
/usr/share/openstack-tripleo-heat-templates/environments/services/ceph-mds.yaml

3. deploy

Actual results:
The deployment fails, the manila pools are have too many PGs (128) - Ceph-ansible verification is failing 

Expected results:
The manila pools are set with 32 PGs 

Additional info:

Comment 1 Giulio Fidente 2018-06-28 18:36:04 UTC

This is expected, the cephfs pools have their own parameters [1] [2] to set the PG num.

Do you think it would be more intuitive to default these to the DefaultPgNum value?

1. https://github.com/openstack/tripleo-heat-templates/blob/master/docker/services/ceph-ansible/ceph-mds.yaml#L41

2. https://github.com/openstack/tripleo-heat-templates/blob/master/docker/services/ceph-ansible/ceph-mds.yaml#L47

Comment 2 Yogev Rabl 2018-06-29 01:01:01 UTC

(In reply to Giulio Fidente from comment #1)
> This is expected, the cephfs pools have their own parameters [1] [2] to set
> the PG num.
> 
> Do you think it would be more intuitive to default these to the DefaultPgNum
> value?

Yes, I do. In any case, this should be documented properly to avoid future errors

Comment 10 Yogev Rabl 2019-12-18 17:59:46 UTC

Verified

Comment 12 errata-xmlrpc 2020-02-06 14:37:22 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2020:0283