OpenStack Heat

Unable to fetch attachments attribute of Cinder::Volume from SoftwareDeployment resource

Bug #1709279 reported by Alexey Shchukin
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
OpenStack Heat
Triaged
Medium
Rabi Mishra
OpenStack Heat no-milestone-taged-bugs

Bug Description

Steps to reproduce:
0. Replace network_id, subnet_id, image and flavor within template with values from your environment.
1. Create stack.
2. Check stack's outputs. The value of variable *bootstrap_stderr > server > volumes* should be '/dev/vd[a-z]', but we have 'None'.

The error appears only on CREATE stage. However, on UPDATE stage everything works as expected.

Environment:
- OpenStack Ocata (RDO)
- Cinder uses Ceph as a backend
- Image must include the following elements:
  * os-collect-config
  * os-refresh-config
  * os-apply-config
  * heat-config
  * heat-config-script

Full template: http://paste.openstack.org/show/617522/
Logs: http://paste.openstack.org/show/617521/

Revision history for this message
Rabi Mishra (rabi) wrote :

The issue here is attachments for 'server_volume' change after 'server_volume_attachment' resource is created.

SoftwareDeployment 'bootstrap' depends on only 'server_volume' with it's attributes used in properties of 'bootstrap'. So it does not wait for 'server_volume_attachment' to be created.

By changing the 'depends_on' for 'bootstrap' resource to depend on the 'server_volume_attachment', I think you can fix this.

  bootstrap:
    type: OS::Heat::SoftwareDeployment
    depends_on: server_volume_attachment

You don't have explicitly add 'depends_on' for 'bootstrap_script' in 'bootstrap'.

Revision history for this message
Alexey Shchukin (alex-v-schukin) wrote :

I tried the following:
- change the 'bootstrap' resource definition (see below) and recreate a stack.
---
  bootstrap:
    type: OS::Heat::SoftwareDeployment
    depends_on: server_volume_attachment
    properties:
      name: 01_bootstrap
      config:
        get_resource: bootstrap_script
---

- apply patch from https://review.openstack.org/#/c/482663/ and recreate a stack.

Nothing of that helped.

Revision history for this message
Rabi Mishra (rabi) wrote :

Looks like the issue exists in master too. Will have a look.

Changed in heat:
assignee: nobody → Rabi Mishra (rabi)
importance: Undecided → Medium
Rico Lin (rico-lin)
Changed in heat:
status: New → Triaged
Revision history for this message
Rabi Mishra (rabi) wrote :

It seems we keep the referenced attributes of a resource in node_data/stack_defn immediately after the resource is created/updated. Hence any changes to it afterwards is not accounted for when the resource with the referenced attribute is created/updated . I suggested the user an workaround for this, by splitting the template into two.

1. child template with server, volume, volume_attachments, networks
2. parent template with template resource, software config and deployment resources

Rico Lin (rico-lin)
Changed in heat:
milestone: none → no-priority-tag-bugs
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