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Export instance from OpenStack with Ceph/rbd backend.

Suppose that you want to migrate an instance from differents infrastructures or you want to handover and instance information to a client, so you need to recover (export) the instance volumes information.

Step 1: Get the instance UUID.

Cinder Volume Transfer

Let's assume you want to change ownership of volume from Tenant_A to Tenant_B.

Step 1: Tenant A will initiate an Ownership Transfer which will enable another tenant to take ownership of it.

$ source openrc Tenant_A Tenant_A
$ cinder transfer-create [volume_id]

An Authentication Key and a Transfer ID are returned here.

Step 2: Tenant B needs to accept the Transfer using the Transfer ID and The Authentication Keygenerated above.

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