OpenStack Volume Deletion Fails

Encountering issues deleting volumes in Platform9 Managed OpenStack? This guide outlines the common causes for deletion failures, including migration and detachment issues, along with step-by-step res

Problem

Deletion of the volume fails with the following error in /var/log/pf9/cindervolume-base.log.

cindervolume-base.log

Delete for volume [VOLUME-ID] failed: Invalid volume: Volume status must be available or error or error_restoring or error_extending or error_managing and must not be migrating, attached, belong to a group, have snapshots or be disassociated from snapshots after volume transfer. 
(HTTP 400) (Request-ID: [REQUEST-ID]) ERROR: Unable to delete any of the specified volumes.

Environment

• Platform9 Managed OpenStack - v3.6.0 and Higher
• Cinder

Cause

In both these cases mentioned below, Cinder restricts the volume deletion.

• Case 1: The volume stuck during volume migration.
• Case 2: The volume was not cleanly detached during VM deletion.

Diagnosis

Case 1:

• Volume details

Command

$ openstack volume show --fit <VOLUME_UUID>
+--------------------------------+--------------------------------------------------+
| Field                          | Value                                            |
+--------------------------------+--------------------------------------------------+
| attachments                    | []                                               |
| availability_zone              | [AZ-NAME]                                        |
| bootable                       | false                                            |
| consistencygroup_id            | None                                             |
| created_at                     | [TIME-STAMP]                                     |
| description                    | [DESCRIPTION]                                    |
| encrypted                      | False                                            |
| id                             | [VOLUME-ID]                                      |
| migration_status               | deleting                                         |
| multiattach                    | False                                            |
| name                           | [VOLUME-NAME]                                    |
| os-vol-host-attr:host          | [HOST-ID]                                        |
| os-vol-mig-status-attr:migstat | deleting                                         |
| os-vol-mig-status-attr:name_id | None                                             |
| os-vol-tenant-attr:tenant_id   | [TENANT-ID]                                      |
| properties                     | attached_mode='rw', readonly='False'             |
| replication_status             | None                                             |
| size                           | [SIZE]                                           |
| snapshot_id                    | None                                             |
| source_volid                   | None                                             |
| status                         | deleting                                         |
| type                           | None                                             |
| updated_at                     | [TIME-STAMP]                                     |
| user_id                        | [USER-ID]                                        |
+--------------------------------+--------------------------------------------------+

• Cinder volume base logs

cindervolume-base.log

Delete for volume [VOLUME-ID] failed: Invalid volume: Volume status must be available or error or error_restoring or error_extending or error_managing and must not be migrating, attached, belong to a group, have snapshots or be disassociated from snapshots after volume transfer. 
(HTTP 400) (Request-ID: [REQUEST-ID]) ERROR: Unable to delete any of the specified volumes.

Case 2:

• Volume details

Command

$ openstack volume show --fit <VOLUME_UUID>
+--------------------------------+--------------------------------------------------+
| Field                          | Value                                            |
+--------------------------------+--------------------------------------------------+
| attachments                    | []                                               |
| availability_zone              | [AZ-NAME]                                        |
| bootable                       | false                                            |
| consistencygroup_id            | None                                             |
| created_at                     | [TIME-STAMP]                                     |
| description                    | [DESCRIPTION]                                    |
| encrypted                      | False                                            |
| id                             | [VOLUME-ID]                                      |
| migration_status               | None                                             |
| multiattach                    | False                                            |
| name                           | [VOLUME-NAME]                                    |
| os-vol-host-attr:host          | [HOST-ID]                                        |
| os-vol-mig-status-attr:migstat | None                                             |
| os-vol-mig-status-attr:name_id | None                                             |
| os-vol-tenant-attr:tenant_id   | [TENANT-ID]                                      |
| properties                     | readonly='False'                                 |
| replication_status             | None                                             |
| size                           | [SIZE]                                           |
| snapshot_id                    | None                                             |
| source_volid                   | None                                             |
| status                         | deleting                                         |
| type                           | None                                             |
| updated_at                     | [TIME-STAMP]                                     |
| user_id                        | [USER-ID]                                        |
+--------------------------------+--------------------------------------------------+

• Cinder volume base logs

cindervolume-base.log

Delete for volume [VOLUME-ID] failed: Invalid volume: Volume status must be available or error or error_restoring or error_extending or error_managing and must not be migrating, attached, belong to a group, have snapshots or be disassociated from snapshots after volume transfer. 
(HTTP 400) (Request-ID: [REQUEST-ID]) ERROR: Unable to delete any of the specified volumes.

Resolution

Case 1: For volume stuck with migration and attach-related flags:

Note

To run cinder commands, install python-cinderclient==9.4.0 Generally cinder binary is available only on the Platform9 Management Plane and Block Storage hosts directly.

• Set the state of the volume to "available".

Command

$ cinder reset-state --state available <VOLUME_UUID>

• Reset the migration status of the volume.

Command

$ cinder reset-state --reset-migration-status  <VOLUME_UUID>

• Set the attach status to "detached".

Command

$ cinder reset-state --attach-status detached  <VOLUME_UUID>

• Delete the volume.

Command

$ cinder delete  <VOLUME_UUID>

Case 2: For volumes stuck in deleting state:

• Reset the state of the volume to "available"

Command

$ openstack volume set --state available <VOLUME_UUID>

• Delete the volume

Command

$ openstack volume delete  <VOLUME_UUID>

Validation

Case 1: After applying fix for volume with migration and attach metadata:

• Volume status changes from deleting to available after the reset-state command.
• migration_status becomes None.
• attached_mode or properties like attached_mode='rw' are no longer blocking deletion.
• The volume is successfully deleted from the system and no longer appears in CLI or UI.
• Verify volume state:

Command

$ openstack volume show <VOLUME_UUID> --fit-width
Expected Output:

No volume with a name or ID of '[VOLUME_UUID]' exists.

Case 2: After applying fix for volume with migration and attach metadata:

• Volume status changes from deleting to available after the reset-state command.
• The volume is successfully deleted from the system and no longer appears in CLI or UI.
• Verify volume state:

Command

$ openstack volume show <VOLUME_UUID> --fit-width
Expected Output:

No volume with a name or ID of '[VOLUME_UUID]' exists.

Additional Information

• Always confirm that the volume is not in use or attached to a running instance before forcibly resetting its state.
• Resetting states bypasses safety checks and should only be used when metadata inconsistencies block clean-up.