Ovirt provider Storage uncommitted does not match the common definition

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Discussed in https://github.com/orgs/ManageIQ/discussions/23272

^{Originally posted by szajac01 November 20, 2024}
Hi
I do use Redhat Virtualization provider to create integration with OLVM.
Integration seems to be fine, objects are discovered. (Datastores,Clusters, Networks, Vm, etc...)
I have a strange behavior with Datastore objects.
v_total_provisioned attribute does not show a coherent value...
It should be the Allocated value present in OLVM. but it shows a larger higher value as if all space was allocated.
I don't find any other value in attributes that could fit....

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So v_total_provisioned in core is used + uncommitted [ref]. In Ovirt/RHV uncommitted is total - committed [ref]

I think the issue here is that in VMware uncommitted is the theoretical size of a vmdk - the allocated size (e.g. 10GiB thin prov vmdk with 8GiB used would be 2GiB of uncommitted).

[szajac01]

To get the coherent value in ManageIQ, i had to change ref

#:uncommitted => total - committed,
:uncommitted => committed,