PowerMax - QoS should not be set on parent storage group

[Helen Walsh]

The parent storage group is just a hold all for the child
storage groups which contain the attributes service level and QoS.
Setting QoS on the parent storage
group can cause problems as having a higher I/O limit on the
child than the parent is not allowed and this is not the
intention.

PowerMax only bug

Error received:
Exception received was Error modify storagegroup resource. The status code received is 500 and the message is {'message': "A problem occurred modifying the storage group resource: Error Adding items to Storage Group 'OS-myhost-F-OS_PG-SG': The operation cannot be performed because the storage group attribute conflicts with other parent or child storage group attribute"}.:

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/cinder/+/793814

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/cinder/+/793814
Committed: https://opendev.org/openstack/cinder/commit/1084de1f1666c2c5e9a850ef39c124bf74652dad
Submitter: "Zuul (22348)"
Branch: master

commit 1084de1f1666c2c5e9a850ef39c124bf74652dad
Author: Helen Walsh <email address hidden>
Date: Mon May 31 16:37:12 2021 +0100

    PowerMax Driver - QoS should not be set on parent storage group

    The parent storage group is just a hold all for the child
    storage groups which contain attributes like service level and QoS.
    Setting QoS on the parent storage group can cause problems as
    having a higher I/O limit on the child than the parent is not
    allowed and this is not the intention. The fix is to set
    QoS on the child storage groups only.

    Closes-Bug: #1930290
    Change-Id: Ib2c1a44086da1fa3c64611344221c9307be22296

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/xena
Review: https://review.opendev.org/c/openstack/cinder/+/821745

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 20.0.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/cinder/+/821745
Committed: https://opendev.org/openstack/cinder/commit/6e3fd9e8f7a03f64f48a9ae62f24308bbb302882
Submitter: "Zuul (22348)"
Branch: stable/xena

commit 6e3fd9e8f7a03f64f48a9ae62f24308bbb302882
Author: Helen Walsh <email address hidden>
Date: Mon May 31 16:37:12 2021 +0100

    PowerMax Driver - QoS should not be set on parent storage group

    The parent storage group is just a hold all for the child
    storage groups which contain attributes like service level and QoS.
    Setting QoS on the parent storage group can cause problems as
    having a higher I/O limit on the child than the parent is not
    allowed and this is not the intention. The fix is to set
    QoS on the child storage groups only.

    Closes-Bug: #1930290
    Change-Id: Ib2c1a44086da1fa3c64611344221c9307be22296
    (cherry picked from commit 1084de1f1666c2c5e9a850ef39c124bf74652dad)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 19.2.0 release.