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https://issues.apache.org/jira/browse/DTACLOUD-108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13158724#comment-13158724
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David Lutterkort commented on DTACLOUD-108:
-------------------------------------------

Yes, I agree - since there can be mixed clusters, the user has to be prepared 
for an error of 'user_data injection not possible'.

So let's just advertise user_data in the entrypoint and throw a decent 
exception if we can't find the floppyinject hook.
                
> RHEV-M user_data trouble
> ------------------------
>
>                 Key: DTACLOUD-108
>                 URL: https://issues.apache.org/jira/browse/DTACLOUD-108
>             Project: DeltaCloud
>          Issue Type: Bug
>            Reporter: David Lutterkort
>            Assignee: Michal Fojtik
>
> For a number of reasons, the current way how we do user_data injection in 
> RHEV-M causes heartburn. To address that, we need to
> (a) take an antacid
> (b) only report feature :instances, :user_data if the capabilities for that 
> RHEV-M provider contain "//custom_property[@name='floppyinject']" (ideally, 
> cache this in a long-lived cache keyed by RHEV-M provider URL)
> (c) in rhevm_client.rb(create_vm) do not do any checks for version; instead, 
> check if provider has floppyinject hook installed
> (d) take another antacid

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