Ceph suggests defaulting pg_num to 128 when using < 5 OSDs

[Giulio Fidente]

Currently tripleo-heat-templates defaults to pg_num: 32 while best practices suggest setting it to 128 for less then 5 OSDs [1].

This value could be set using derived parameters workflow but we need to use a better default anyway.

1. http://docs.ceph.com/docs/master/rados/operations/placement-groups/

[Giulio Fidente (gfidente)]

This was fixed in the ceph-ansible profiles by https://review.openstack.org/#/c/505153/ but not in the puppet profiles.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/506330

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/506330
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=e17ae7620e03790da0d29092ab42e8089b2e8d11
Submitter: Jenkins
Branch: master

commit e17ae7620e03790da0d29092ab42e8089b2e8d11
Author: Giulio Fidente <email address hidden>
Date: Thu Sep 21 21:18:01 2017 +0200

    Default Ceph pg_num and pgp_num to 128

    As per Ceph docs [1] we should default pg_num and pgp_num to 128 when
    using less than 5 OSDs.

    This same change was applied to the ceph-ansible profiles with [2].

    Also updates the CI environment files to continue using 32 where we
    deploy a single OSD.

    1. http://docs.ceph.com/docs/master/rados/operations/placement-groups/
    2. Ibd9fb23e04576e95e24af58f856663397886a947

    Change-Id: I1920bc8f5251f362af38ad3bd6f46dda42c6ee93
    Closes-Bug: #1718756

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/pike
Review: https://review.openstack.org/507777

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/ocata
Review: https://review.openstack.org/507778

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/newton
Review: https://review.openstack.org/507779

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/507777
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=6faca15437bf0c8b88aa424b4bc9e3a0b870e863
Submitter: Jenkins
Branch: stable/pike

commit 6faca15437bf0c8b88aa424b4bc9e3a0b870e863
Author: Giulio Fidente <email address hidden>
Date: Thu Sep 21 21:18:01 2017 +0200

    Default Ceph pg_num and pgp_num to 128

    As per Ceph docs [1] we should default pg_num and pgp_num to 128 when
    using less than 5 OSDs.

    This same change was applied to the ceph-ansible profiles with [2].

    Also updates the CI environment files to continue using 32 where we
    deploy a single OSD.

    1. http://docs.ceph.com/docs/master/rados/operations/placement-groups/
    2. Ibd9fb23e04576e95e24af58f856663397886a947

    Change-Id: I1920bc8f5251f362af38ad3bd6f46dda42c6ee93
    Closes-Bug: #1718756
    (cherry picked from commit e17ae7620e03790da0d29092ab42e8089b2e8d11)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/507779
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=27ec78be9d128ac9be67e688533bd755ce49b7ee
Submitter: Jenkins
Branch: stable/newton

commit 27ec78be9d128ac9be67e688533bd755ce49b7ee
Author: Giulio Fidente <email address hidden>
Date: Thu Sep 21 21:18:01 2017 +0200

    Default Ceph pg_num and pgp_num to 128

    As per Ceph docs [1] we should default pg_num and pgp_num to 128 when
    using less than 5 OSDs.

    This same change was applied to the ceph-ansible profiles with [2].

    Also updates the CI environment files to continue using 32 where we
    deploy a single OSD.

    1. http://docs.ceph.com/docs/master/rados/operations/placement-groups/
    2. Ibd9fb23e04576e95e24af58f856663397886a947

    Change-Id: I1920bc8f5251f362af38ad3bd6f46dda42c6ee93
    Closes-Bug: #1718756
    (cherry picked from commit e17ae7620e03790da0d29092ab42e8089b2e8d11)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-heat-templates 7.0.2 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-heat-templates 5.3.3 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-heat-templates 8.0.0.0b1 development milestone.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/507778
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=8ff1b79f5d2accf7ab5c5b70c72408b420bcb621
Submitter: Zuul
Branch: stable/ocata

commit 8ff1b79f5d2accf7ab5c5b70c72408b420bcb621
Author: Giulio Fidente <email address hidden>
Date: Thu Sep 21 21:18:01 2017 +0200

    Default Ceph pg_num and pgp_num to 128

    As per Ceph docs [1] we should default pg_num and pgp_num to 128 when
    using less than 5 OSDs.

    This same change was applied to the ceph-ansible profiles with [2].

    Also updates the CI environment files to continue using 32 where we
    deploy a single OSD.

    1. http://docs.ceph.com/docs/master/rados/operations/placement-groups/
    2. Ibd9fb23e04576e95e24af58f856663397886a947

    Change-Id: I1920bc8f5251f362af38ad3bd6f46dda42c6ee93
    Closes-Bug: #1718756
    (cherry picked from commit e17ae7620e03790da0d29092ab42e8089b2e8d11)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-heat-templates 6.2.5 release.