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https://issues.apache.org/jira/browse/CLOUDSTACK-8341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15238479#comment-15238479
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Pierre-Luc Dion commented on CLOUDSTACK-8341:
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[~mike-tutkowski] does this work got completed and in fact this Jira issue
could be close ?
thanks!
> [GSoC 2015] Enable snapshots to be taken on primary storage for ESXi using
> managed storage
> ------------------------------------------------------------------------------------------
>
> Key: CLOUDSTACK-8341
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8341
> Project: CloudStack
> Issue Type: Improvement
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Management Server, VMware
> Affects Versions: Future, 4.6.0
> Environment: All OSes the CloudStack Management Server is expected to
> run on.
> Reporter: Mike Tutkowski
> Assignee: Seif Eddine Jemli
> Fix For: Future
>
>
> ACS users could benefit from the ability to take snapshots (for managed
> storage) that reside on primary storage (instead of backups that reside on
> secondary storage).
> Benefits could include the following:
> * Fast snapshots instead of slower backups
> * Make use of compression, de-duplication, and thin provisioning that may be
> supported on the primary storage
> Some work has already been done with regards to this topic using the
> XenServer hypervisor. However, that hypervisor currently has restrictions
> around immutable UUIDs on its SRs and VDIs that effectively limit the value
> proposition of backend snapshots.
> Let's target VMware for this feature as it has the ability to resignature its
> datastores and thus make effective use of backend snapshots of datastores.
> Related:
> https://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.wssdk.pg.doc_50%2FPG_Ch8_Storage.10.9.html
> This work may entail modifying components in the management server that
> expect snapshots to only reside on secondary storage.
> In addition, the VMware agent code will need to be updated.
> Also, a custom snapshot strategy and a custom data motion strategy will
> either need to be created (or the code will have to be placed inside of an
> existing snapshot strategy and data motion strategy).
> Once the snapshots can be created on primary storage, we need to make sure we
> can create volumes and templates from them.
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