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https://issues.apache.org/jira/browse/CLOUDSTACK-6191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14059388#comment-14059388
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edison su commented on CLOUDSTACK-6191:
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I didn't realize it's a huge patch, to just add an option, specific to KVM
volume creation. From a user point of view, I doubt anybody care about how the
disk is created, we'd better not expose implementation detail to end users.
I would suggest, add a new option(like: qcow2.provision=flat/sparse/thin etc)
in kvm agent.properties, to give admin an opportunity to optimize the volume
creation. Is it OK for everybody?
> Volume provisioning type option
> -------------------------------
>
> Key: CLOUDSTACK-6191
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-6191
> Project: CloudStack
> Issue Type: Improvement
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: KVM, Management Server
> Reporter: Yoshikazu Nojima
> Assignee: Yoshikazu Nojima
> Priority: Blocker
> Fix For: 4.5.0
>
>
> Thin provisioning of a volume saves consumption of a storage, and fat
> provisioning minimizes IOPS performance overhead.
> This feature implements a global setting to provide users an option to select
> how to provision volumes.
> Design doc:
> https://cwiki.apache.org/confluence/display/CLOUDSTACK/Volume+provisioning+type+option
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