multiattach volume fails if status is attaching

[Rob Saunders]

This is a duplicate of https://bugs.launchpad.net/heat/+bug/1395468 however that has expired unresolved and this still appears to be an issue.

These are the Heat resources in use:
 OS::Cinder::VolumeAttachment (x2)
 OS::Nova::Server (x2)
 OS::Cinder::Volume (x1)

When using heat and creating a cinder volume with multiattach=true, the stack create fails if second volume attachment detects that the first volume attachment is in an "attaching" state. The attachment reports an error as shown below:

Error: resources.vol_att_1: Failed to attach volume 0a767750-xxxx-xxxx-xxxx-1440adac7552 to server bd9c3696-xxxx-xxxx-xxxx-8f61525a1948 - Invalid volume: volume '0a767750-xxxx-xxxx-xxxx-1440adac7552' status must be 'available'. Currently in 'attaching' (HTTP 400) (Request-ID: req-1aa3aafe-xxxx-xxxx-xxxx-5140f168c407)

What should happen is that the second volume attachment waits until the first attachment is in a state of available, in-use, or failed before re-attempting to connect.

This occurs on Openstack Mitaka on CentOS7.0 with the following software:

openstack-cinder.noarch 1:8.0.0-1.el7 @centos-openstack-mitaka
openstack-heat-api.noarch 1:6.0.0-1.el7 @centos-openstack-mitaka
openstack-heat-api-cfn.noarch 1:6.0.0-1.el7 @centos-openstack-mitaka
openstack-heat-common.noarch 1:6.0.0-1.el7 @centos-openstack-mitaka
openstack-heat-engine.noarch 1:6.0.0-1.el7 @centos-openstack-mitaka
openstack-nova-api.noarch 1:13.1.0-1.el7 @centos-openstack-mitaka
openstack-nova-common.noarch 1:13.1.0-1.el7 @centos-openstack-mitaka
openstack-nova-compute.noarch 1:13.1.0-1.el7 @centos-openstack-mitaka
openstack-nova-conductor.noarch 1:13.1.0-1.el7 @centos-openstack-mitaka
openstack-nova-console.noarch 1:13.1.0-1.el7 @centos-openstack-mitaka
openstack-nova-novncproxy.noarch
openstack-nova-scheduler.noarch 1:13.1.0-1.el7 @centos-openstack-mitaka
python-cinder.noarch 1:8.0.0-1.el7 @centos-openstack-mitaka
python-cinderclient.noarch 1.6.0-1.el7 @centos-openstack-mitaka
python-heatclient.noarch 1.0.0-1.el7 @centos-openstack-mitaka
python-nova.noarch 1:13.1.0-1.el7 @centos-openstack-mitaka
python-novaclient.noarch 1:3.3.1-1.el7 @centos-openstack-mitaka

Attached: yaml template file

[huangtianhua (huangtianhua)]

Although we support the property 'multiattach' for cinder volume resource, but nova has not support to attach a volume to several servers yet, so the error raised.