ASF GitHub Bot commented on CLOUDSTACK-9438:

Github user koushik-das commented on the issue:

    Thanks for the update @jburwell. While I agree that smoke tests needs to be 
stabilized, I don't quite agree to the idea of blocking master for this.
    Lot of commits have already gone to master with unstable smoke tests and 
now suddenly master is blocked to stabilize tests. A better approach would have 
been to do the exercise at the start of next release cycle with a dedicated 
window where only test fixes are allowed.

> Fix for CLOUDSTACK-9252 - Make NFS version changeable in UI
> -----------------------------------------------------------
>                 Key: CLOUDSTACK-9438
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9438
>             Project: CloudStack
>          Issue Type: Improvement
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>            Reporter: Nicolas Vazquez
>            Assignee: Nicolas Vazquez
> h3. Introduction
> From [9252|https://issues.apache.org/jira/browse/CLOUDSTACK-9252] it was 
> possible to configure NFS version for secondary storage mount. 
> However, changing NFS version requires inserting an new detail on 
> {{image_store_details}} table, with {{name = 'nfs.version'}} and {{value = 
> X}} where X is desired NFS version, and then restarting management server for 
> changes to take effect.
> Our improvement aims to make NFS version changeable from UI, instead of 
> previously described workflow.
> h3. Proposed solution
> Basically, NFS version is defined as an image store ConfigKey, this implied:
> * Adding a new Config scope: *ImageStore*
> * Make {{ImageStoreDetailsDao}} class to extend {{ResourceDetailsDaoBase}} 
> and {{ImageStoreDetailVO}} implement {{ResourceDetail}}
> * Insert {{'display'}} column on {{image_store_details}} table
> * Extending {{ListCfgsCmd}} and {{UpdateCfgCmd}} to support *ImageStore* 
> scope, which implied:
> ** Injecting {{ImageStoreDetailsDao}} and {{ImageStoreDao}} on 
> {{ConfigurationManagerImpl}} class, on {{cloud-server}} module.
> h4. Important
> It is important to mention that {{ImageStoreDaoImpl}} and 
> {{ImageStoreDetailsDaoImpl}} classes were moved from {{cloud-engine-storage}} 
> to {{cloud-engine-schema}} module in order to Spring find those beans to 
> inject on {{ConfigurationManagerImpl}} in {{cloud-server}} module.
> We had this maven dependencies between modules:
> * {{cloud-server --> cloud-engine-schema}}
> * {{cloud-engine-storage --> cloud-secondary-storage --> cloud-server}}
> As {{ImageStoreDaoImpl}} and {{ImageStoreDetailsDaoImpl}} were defined in 
> {{cloud-engine-storage}}, and they needed in {{cloud-server}} module, to be 
> injected on {{ConfigurationManagerImpl}}, if we added dependency from 
> {{cloud-server}} to {{cloud-engine-storage}} we would introduce a dependency 
> cycle. To avoid this cycle, we moved those classes to {{cloud-engine-schema}} 
> module

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