Volume multi-attach broken in Ussuri

[Justinas Balciunas]

Using Horizon version: 18.3.2, Ussuri

Multi-attach functionality doesn't work in Horizon. It is, however, fully functional using CLI.

root@kolla-ussuri:/etc/kolla# openstack volume list --all-projects
+--------------------------------------+----------------+--------+------+---------------------------------------------------------------+
| ID | Name | Status | Size | Attached to |
+--------------------------------------+----------------+--------+------+---------------------------------------------------------------+
| 7ee22536-4ba7-418e-be4e-82a53d19f35e | vol-multiattch | in-use | 7 | Attached to b325846f-4231-48c6-a815-7db4ca5d1acc on /dev/sdb |
+--------------------------------------+----------------+--------+------+---------------------------------------------------------------+

root@kolla-ussuri:/etc/kolla# openstack --os-compute-api-version 2.87 server add volume 5e5281c0-65e7-4baa-b94b-a616e54dc159 7ee22536-4ba7-418e-be4e-82a53d19f35e
root@kolla-ussuri:/etc/kolla# cinder show 7ee22536-4ba7-418e-be4e-82a53d19f35e
+--------------------------------+----------------------------------------------------------------------------------+
| Property | Value |
+--------------------------------+----------------------------------------------------------------------------------+
| attached_servers | ['b325846f-4231-48c6-a815-7db4ca5d1acc', '5e5281c0-65e7-4baa-b94b-a616e54dc159'] |
| attachment_ids | ['83fe9c55-2803-434e-bbf3-90aa93c876e2', '8c4cc75b-c8d6-4aed-8939-8e2703453228'] |
| availability_zone | AZ2 |
| bootable | false |
| consistencygroup_id | None |
| created_at | 2020-06-17T07:01:54.000000 |
| description | |
| encrypted | False |
| group_id | None |
| id | 7ee22536-4ba7-418e-be4e-82a53d19f35e |
| metadata | |
| migration_status | None |
| multiattach | True |
| name | vol-multiattch |
| os-vol-host-attr:host | z141-ost-ctrl2@unity_z141#POOL-1 |
| os-vol-mig-status-attr:migstat | None |
| os-vol-mig-status-attr:name_id | None |
| os-vol-tenant-attr:tenant_id | 4e04be9ff9824855be22d0f54176f552 |
| provider_id | sv_11 |
| replication_status | None |
| service_uuid | fec22e75-346b-4cfa-9ea9-059424efb522 |
| shared_targets | True |
| size | 7 |
| snapshot_id | None |
| source_volid | None |
| status | in-use |
| updated_at | 2020-06-17T07:12:24.000000 |
| user_id | 390ed4681a7995dc8833b1b176b41595b9d1053357a38de2da9b4de2ab0fa5b5 |
| volume_type | AZ2-SSD |
+--------------------------------+----------------------------------------------------------------------------------+

[Justinas Balciunas (justinas-balciunas)]

Additional information:

Horizon screenshots:
https://ibb.co/Lhq9n2Y
https://ibb.co/wzqnxmg

CLI outputs:
root@kolla-ussuri:/etc/kolla# openstack volume list --all-projects
+--------------------------------------+------+-----------+------+-------------+
| ID | Name | Status | Size | Attached to |
+--------------------------------------+------+-----------+------+-------------+
| 8bcd50fb-b200-4fa2-9441-b68c5472ac9c | vol1 | available | 5 | |
+--------------------------------------+------+-----------+------+-------------+
root@kolla-ussuri:/etc/kolla#
root@kolla-ussuri:/etc/kolla#
root@kolla-ussuri:/etc/kolla# openstack volume show 8bcd50fb-b200-4fa2-9441-b68c5472ac9c
+--------------------------------+------------------------------------------------------------------+
| Field | Value |
+--------------------------------+------------------------------------------------------------------+
| attachments | [] |
| availability_zone | AZ2 |
| bootable | false |
| consistencygroup_id | None |
| created_at | 2020-06-17T09:10:27.000000 |
| description | |
| encrypted | False |
| id | 8bcd50fb-b200-4fa2-9441-b68c5472ac9c |
| migration_status | None |
| multiattach | True |
| name | vol1 |
| os-vol-host-attr:host | z141-ost-ctrl2@unity_z141#POOL-1 |
| os-vol-mig-status-attr:migstat | None |
| os-vol-mig-status-attr:name_id | None |
| os-vol-tenant-attr:tenant_id | 4e04be9ff9824855be22d0f54176f552 |
| properties | |
| replication_status | None |
| size | 5 |
| snapshot_id | None |
| source_volid | None |
| status | available |
| type ...

[Justinas Balciunas (justinas-balciunas)]

Added screenshot with volume "Manage attachments" dialog window which shows that after attaching the multi-attach volume to one instance it is no longer possible to attach it to another one.

Screenshot: https://ibb.co/NLfYYpS

[Justinas Balciunas (justinas-balciunas)]

With the same volume as in the screenshots:

openstack --os-compute-api-version 2.87 server add volume 5e5281c0-65e7-4baa-b94b-a616e54dc159 8bcd50fb-b200-4fa2-9441-b68c5472ac9c

root@kolla-ussuri:/etc/kolla# openstack volume show 8bcd50fb-b200-4fa2-9441-b68c5472ac9c -f json
{
  "attachments": [
    {
      "id": "8bcd50fb-b200-4fa2-9441-b68c5472ac9c",
      "attachment_id": "797c3cf8-486f-4686-8bfa-a9b35f509a91",
      "volume_id": "8bcd50fb-b200-4fa2-9441-b68c5472ac9c",
      "server_id": "b325846f-4231-48c6-a815-7db4ca5d1acc",
      "host_name": "z141-ost-comp4",
      "device": "/dev/sdb",
      "attached_at": "2020-06-17T09:20:18.000000"
    },
    {
      "id": "8bcd50fb-b200-4fa2-9441-b68c5472ac9c",
      "attachment_id": "df329fe6-d668-4989-ace0-b1bc47aca504",
      "volume_id": "8bcd50fb-b200-4fa2-9441-b68c5472ac9c",
      "server_id": "5e5281c0-65e7-4baa-b94b-a616e54dc159",
      "host_name": "z141-ost-comp1",
      "device": "/dev/sdb",
      "attached_at": "2020-06-17T09:54:24.000000"
    }
  ],
  "availability_zone": "AZ2",
  "bootable": "false",
  "consistencygroup_id": null,
  "created_at": "2020-06-17T09:10:27.000000",
  "description": "",
  "encrypted": false,
  "id": "8bcd50fb-b200-4fa2-9441-b68c5472ac9c",
  "migration_status": null,
  "multiattach": true,
  "name": "vol1",
  "os-vol-host-attr:host": "z141-ost-ctrl2@unity_z141#POOL-1",
  "os-vol-mig-status-attr:migstat": null,
  "os-vol-mig-status-attr:name_id": null,
  "os-vol-tenant-attr:tenant_id": "4e04be9ff9824855be22d0f54176f552",
  "properties": {},
  "replication_status": null,
  "size": 5,
  "snapshot_id": null,
  "source_volid": null,
  "status": "in-use",
  "type": "AZ2-SSD",
  "updated_at": "2020-06-17T09:54:28.000000",
  "user_id": "390ed4681a7995dc8833b1b176b41595b9d1053357a38de2da9b4de2ab0fa5b5"
}

Horizon screenshots:
https://ibb.co/T2M2s4M
https://ibb.co/3cVtbMX

[Vishal Manchanda (vishalmanchanda)]

Hi, I Successfully succeed to attach the same volume to multiple instances with the Ussuri branch.

Also in the bug report, you attached these screenshot [1], [2] which shows the same that you have
attached your volume 'vol1' with two instances qq1 and qq2. So what's the issue here?

Please correct me if I am wrong.

[Justinas Balciunas (justinas-balciunas)]

I've made those screenshots to show that *displaying* the volume is attached to multiple instances works, however, if you notice this command in the comment above ("openstack --os-compute-api-version 2.87 server add volume 5e5281c0-65e7-4baa-b94b-a616e54dc159 8bcd50fb-b200-4fa2-9441-b68c5472ac9c") then it's clear that I had to attach the volume to another instance using CLI rather than Horizon because Horizon simply refuses to allow me to do so.

[Launchpad Janitor (janitor)]

[Expired for OpenStack Dashboard (Horizon) because there has been no activity for 60 days.]