Mike Tutkowski created CLOUDSTACK-4810:
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Summary: Enable hypervisor snapshots for CloudStack-managed
storage (for XenServer and VMware)
Key: CLOUDSTACK-4810
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-4810
Project: CloudStack
Issue Type: Bug
Security Level: Public (Anyone can view this level - this is the default.)
Affects Versions: 4.2.0
Environment: Ubuntu 12.04
Reporter: Mike Tutkowski
Assignee: Mike Tutkowski
Fix For: Future
CloudStack-managed storage was introduced into CloudStack with the new storage
framework in 4.2.
This allows CloudStack to create and delete storage repositories and datastores
as needed.
For 4.2 the VDI inside of an SR takes up almost as much space as is available
in the SR (so there is a one-to-one mapping between an SR and a VDI). This is
the same idea for datastores and VMDKs.
The SR or datastore should be sized larger than its VDI or VMDK so there is
space available for hypervisor snapshots that get stored on the same SR or
datastore.
How much larger can be determined by a cluster-level setting.
For example, if you want a 10 GB CloudStack volume, the storage plug-in in
question can create, say, a 20 GB volume on its SAN. 10 GB to be used for the
CloudStack volume and an additional 10 GB for hypervisor snapshots.
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