ASF GitHub Bot commented on CLOUDSTACK-9386:

Github user nvazquez commented on the issue:

    Thanks @jburwell, I've opened new PR (1676) against 4.9 release branch

> DS template copies don’t get deleted in VMware ESXi with multiple clusters 
> and zone wide storage
> ------------------------------------------------------------------------------------------------
>                 Key: CLOUDSTACK-9386
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9386
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: VMware
>    Affects Versions: 4.9.0
>            Reporter: Nicolas Vazquez
>            Assignee: Nicolas Vazquez
>             Fix For:,
> h3. Introduction
> In some production environments with multiple clusters it was noticed that 
> unused templates were consuming too much storage. It was discovered that 
> template cleanup was not deleting marked templates on ESXi.
> h3. Description of the problem
> Suppose we have multiple clusters {{(c1, c2,...,cN)}} on a data center and 
> template {{T}} from which we deploy vms on {{c1}}.
> Suppose now that we expunge those vms, and there's no other vm instance from 
> template {{T}}, so this was the actual workflow:
> # CloudStack marks template for cleanup after {{storage.cleanup.interval}} 
> seconds, by setting {{marked_for_gc = 1}} on {{template_spool_ref}} table, 
> for that template.
> # After another {{storage.cleanup.interval}} seconds a {{DestroyCommand}} 
> will be sent, to delete template from primary storage
> # On {{VmwareResource}}, command is processed, and it first picks up a random 
> cluster, say {{ci != c1}} to look for vm template (using volume's path) and 
> destroy it. But, as template was on {{c1}} it cannot be found, so it won't be 
> deleted. Entry on {{template_spool_ref}} is deleted but not the actual 
> template on hypervisor side.
> h3. Proposed solution
> We propose a way to attack problem shown in point 3, by not picking up a 
> random cluster to look for vm but using vSphere data center. This way we make 
> sure vm template will be deleted in every case, and not depending on random 
> cluster selection

This message was sent by Atlassian JIRA

Reply via email to