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https://issues.apache.org/jira/browse/CLOUDSTACK-4557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13754471#comment-13754471
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Wido den Hollander commented on CLOUDSTACK-4557:
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With deploy do you mean boot or before it actually starts booting?
When using NFS for both Primary and Secondary a simple QCOW2 file copy is
required, but with RBD you have to go from QCOW2 -> RAW on the first copy.
Afterwards it will use the RBD cloning feature to deploy new Instances.
> ceph:Performance:first time operstions taking more time
> -------------------------------------------------------
>
> Key: CLOUDSTACK-4557
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-4557
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Management Server
> Affects Versions: 4.2.0
> Reporter: sadhu suresh
>
> Its taking more time to deploy a first vm on rbd based primary storage
> when compared to VM deployment on NFS based storage. In our environment its
> taking more than 7 mins.[our observation is first time operations are taking
> more time ],like first t time vm deployment/snapshot/attach operations.
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