[Bug 1959712] Re: [SRU] Add iSCSI support to HPE 3PAR driver for Primera 4.2 and higher

[Nobuto Murata]

Tested and verified with cloud-archive:ussuri-proposed.

apt-cache policy cinder-common
cinder-common:
  Installed: 2:16.4.2-0ubuntu2~cloud0
  Candidate: 2:16.4.2-0ubuntu2~cloud0
  Version table:
 *** 2:16.4.2-0ubuntu2~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-proposed/ussuri/main amd64 Packages
        100 /var/lib/dpkg/status
     2:16.4.1-0ubuntu1~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/ussuri/main amd64 Packages
     2:12.0.10-0ubuntu2 500
        500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
     2:12.0.9-0ubuntu1.2 500
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
     2:12.0.0-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages


[after applying -proposed]

2022-02-24 16:05:15.445 13263 INFO
cinder.volume.flows.manager.create_volume [req-
ce6cfe06-8291-4933-981d-d5ea90c8f575 c637fcb15b914d54b9a7c202b2abd27a
8e9bce8207ee4f49a8bd2fc68d1ac6cd - 05a27486835a4d31a65cb4f1911c4f16
05a27486835a4d31a65cb4f1911c4f16] Volume
volume-f0fa16f0-d8c1-44b0-b939-75a3f54e820e
(f0fa16f0-d8c1-44b0-b939-75a3f54e820e): created successfully


** Tags removed: verification-ussuri-needed
** Tags added: verification-ussuri-done

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https://bugs.launchpad.net/bugs/1959712

Title:
  [SRU] Add iSCSI support to HPE 3PAR driver for Primera 4.2 and higher

Status in Ubuntu Cloud Archive:
  Invalid
Status in Ubuntu Cloud Archive ussuri series:
  Fix Committed
Status in Ubuntu Cloud Archive victoria series:
  Fix Committed
Status in cinder package in Ubuntu:
  Invalid
Status in cinder source package in Focal:
  Fix Committed

Bug description:
  [Description]
  OpenStack cinder in Focal (OpenStack Ussuri) is lacking iSCSI support for HPE Primera 4.2 and higher. This is now supported in Cinder and we would like to enable it in Ubuntu Focal as well as OpenStack Ussuri.

  The rationale for this SRU falls under harware enablement for Long
  Term Support releases.

  [Test Case]
  1. Deploy OpenStack with:
   - HPE 3PAR *iSCSI* driver enabled for Cinder
   - with Primera >= 4.2
    as per: https://docs.openstack.org/cinder/latest/configuration/block-storage/drivers/hpe-3par-driver.html
  2. Create a volume
    openstack volume create (--type hpe-primera) --size 10 sru-test-before

  3. Confirm the volume is successfully created while it gave an error
  as "For Primera, only FC is supported. iSCSI cannot be used"
  previously.

  [Regression Potential]
  This is a pretty simple patch. Where the code used to always raise a not implemented error for Primera, it now raises the not implemented error only for < Primera 4.2. Where things could go wrong? It's possible the version checking could have an issue but that code seems standard and the upstream patch has been merged back to stable/victoria [1]. Regression testing will cover that code path as well.
  [1] https://review.opendev.org/c/openstack/cinder/+/820611

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