Bug 2175217

Any informatoin that I can pass along to the customer?

Set fixed-in version to openstack-cinder-15.6.1-2.20230727141331.299553a.el8osttrunk, which is tagged 'rhos-16.2-rhel-8-trunk-candidate'.
https://brewweb.engineering.redhat.com/brew/buildinfo?buildID=2614550

Tested on:
Red Hat OpenStack Platform release 16.2.6 (Train)
openstack-cinder-15.6.1-2.20230906144854.299553a.el8ost.noarch

When tried to create a volume with "multiattach" parameter, got error 400 (bad request):

(overcloud) [stack@undercloud-0 ~]$ openstack token issue -f value -c id
gAAAAABlHZhwQDAn3Op8cXeNHs6wwndZPgnqmzoeKBCn-ogmK4MxMHzQTZhMpSet4Taqqluj0YsR5c2nqYI9X4UB50w7hYTdMU1Kz2gkwZ9UCuTsaexAKFaOlaBesogKiKpr6w2Tb1NM1JABBHkpbfzNT1MIX2THOX9PLA0uVYXnVgp0p-SE4rw

(overcloud) [stack@undercloud-0 ~]$ curl -g -i -X POST http://10.0.0.114:8776/v3/dcc48eab28374585a082da0653bfaac0/volumes -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: python-cinderclient" -H "X-Auth-Token: gAAAAABlHZhwQDAn3Op8cXeNHs6wwndZPgnqmzoeKBCn-ogmK4MxMHzQTZhMpSet4Taqqluj0YsR5c2nqYI9X4UB50w7hYTdMU1Kz2gkwZ9UCuTsaexAKFaOlaBesogKiKpr6w2Tb1NM1JABBHkpbfzNT1MIX2THOX9PLA0uVYXnVgp0p-SE4rw" -d '{"volume": {"size": 1, "consistencygroup_id": null, "snapshot_id": null, "name": "test_vol", "description": null, "volume_type": null, "availability_zone": null, "metadata": {}, "imageRef": null, "source_volid": null, "backup_id": null, "multiattach": "True"}}'          
HTTP/1.1 400 Bad Request
Date: Wed, 04 Oct 2023 16:53:19 GMT
Server: Apache
Content-Length: 261
OpenStack-API-Version: volume 3.0
Vary: OpenStack-API-Version
x-compute-request-id: req-ac083a6a-be31-4a4c-93df-be63d3ae9198
x-openstack-request-id: req-ac083a6a-be31-4a4c-93df-be63d3ae9198
Content-Type: application/json

{"badRequest": {"code": 400, "message": "multiattach parameter has been removed. The default behavior is to use multiattach enabled volume types. Contact your administrator to create a multiattach enabled volume type and use it to create multiattach volumes."}}



Tried using a multiattach "volume_type" and the volume was created successfully (with multiattach=true).

(overcloud) [stack@undercloud-0 ~]$ curl -g -i -X POST http://10.0.0.114:8776/v3/dcc48eab28374585a082da0653bfaac0/volumes -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: python-Token: gAAAAABlHZhwQDAn3Op8cXeNHs6wwndZPgnqmzoeKBCn-ogmK4MxMHzQTZhMpSet4Taqqluj0YsR5c2nqYI9X4UB50w7hYTdMU1Kz2gkwZ9UCuTsaexAKFaOlaBesogKiKpr6w2Tb1NM1JABBHkpbfzNT1MIX2THOX9PLA0uVYXnVgp0p-SE4rw" -d '{"volume": {"size": 1, "consistencygroup_id": null, "snapshot_id": null, "name": "test_vol", "description": null, "volume_type": "multiattach", "availability_zone": null, "metadata": {}, "imageRef": null, "source_volid": null, "backup_id": null}}'                       
HTTP/1.1 202 Accepted
Date: Wed, 04 Oct 2023 16:53:28 GMT
Server: Apache
Content-Length: 797
x-compute-request-id: req-d1350f1b-822c-44cd-abeb-0e3ed94c0501
OpenStack-API-Version: volume 3.0
Vary: OpenStack-API-Version
x-openstack-request-id: req-d1350f1b-822c-44cd-abeb-0e3ed94c0501
Content-Type: application/json

{"volume": {"id": "abf24b23-0d8e-435c-86ce-47e8da3d4c19", "status": "creating", "size": 1, "availability_zone": "nova", "created_at": "2023-10-04T16:53:28.820644", "updated_at": null, "attachments": [], "name": "test_vol", "description": null, "volume_type": "multiattach", "snapshot_id": null, "source_volid": null, "metadata": {}, "links": [{"rel": "self", "href": "http://10.0.0.114:8776/v3/dcc48eab28374585a082da0653bfaac0/volumes/abf24b23-0d8e-435c-86ce-47e8da3d4c19"}, {"rel": "bookmark", "href": "http://10.0.0.114:8776/dcc48eab28374585a082da0653bfaac0/volumes/abf24b23-0d8e-435c-86ce-47e8da3d4c19"}], "user_id": "c7e68646e35d430abf3d276d46046381", "bootable": "false", "encrypted": false, "replication_status": null, "consistencygroup_id": null, "multiattach": true, "migration_status": null}}


Moving to VERIFIED

@mariel This is a change in API behavior, so I think it should be documented.  No need for a spike, you can use the text from BZ #2184834.

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 (Red Hat OpenStack Platform 16.2.6 (Train) bug fix and enhancement 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/RHBA-2023:6307