[Bug 1917323] Re: [NetApp][Ussuri] cifs error since ontap 9.5: Failed to set preferred DC

[Ionut-Madalin Balutoiu]

Hello everyone,

I've tested the new Manila Ussuri packages on Bionic and Focal. The
testing was done as described in the `[Test Case]` in the bug
description.

The tested packages versions are:
* Bionic - 1:10.0.0-0ubuntu0.20.04.2~cloud0
* Focal - 1:10.0.0-0ubuntu0.20.04.2

Everything works as expected, and the problem doesn't reproduce anymore
using the updated Manila Ussuri packages. I'll update the tags.

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

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https://bugs.launchpad.net/bugs/1917323

Title:
  [NetApp][Ussuri] cifs error since ontap 9.5: Failed to set preferred
  DC

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive ussuri series:
  Fix Committed
Status in Ubuntu Cloud Archive victoria series:
  Fix Released
Status in manila package in Ubuntu:
  Fix Released
Status in manila source package in Focal:
  Fix Committed
Status in manila source package in Groovy:
  Fix Released
Status in manila source package in Hirsute:
  Fix Released

Bug description:
  starting with ONTAP 9.5 I get

  And indeed, the ONTAP API for cifs-domain-preferred-dc-add has a new
  required boolean option "skip-config-validation"

  [Impact]
  Using new releases of NetApp ONTAP (>= 9.5) leads to the following bug in the Manila code:
  https://bugs.launchpad.net/manila/+bug/1887643

  As Maurice Escher states, this results in the following error when
  creating a CIFS share with security service server set to some value:

  NetApp API failed. Reason - 13006:Missing input: skip-config-
  validation

  Only Ussuri distro packages are affected by this issue.

  This bug can be reproduced only when using `cifs` shares, and only
  when the driver handles shares servers.

  The issue was already fixed upstream, and it's even included in the
  latest Ussuri minor release: 10.0.2 (or even 10.0.1). Our Ubuntu
  distro packages install 10.0.0, and do not have this issue fixed.

  [Test Case]
  * Create an environment with Manila NetApp ONTAP driver and DHSS (driver handles shares enabled). This also requires an external Active Directory for the CIFS shares.
  * Create a new Manila CIFS share, given a proper Manila security service defined with the Active Directory info.
  * Bug is reproduced.

  [Where problems could occur]
  If the ontapi_version version was not calculated correctly the skip-config-validation config will result in the same error reported in this bug. Testing this code path will help mitigate this.

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