ASF GitHub Bot commented on CLOUDSTACK-9438:

Github user koushik-das commented on the issue:

    @jburwell Was there a discussion thread for this on dev@, didn't remember 
seeing one which mentions about freezing master.
    These issues of test stability are known and were raised multiple times in 
the past as well, so not sure what you mean by severity of the situation. 
Anyways lets wait for the next 24 hours and after that merge the commits that 
have the required LGTMs.

> 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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