Hide PVS accelerator VDIs being orphaned in the Dashboard/Healthview

[olivierlambert]

Context

PVS Accelerator in the Citrix product uses tmpfs / MemorySR VDIs to cache disk blocks in Dom0 RAM for use with their Provisioning Services product.

Those VDI do not belong to any VM, they are special.

Solution

We should probably have a special rule to NOT count them in the orphaned VDI list. It seems that they will always have the same name label and description: PVS cache VDI. If we find a VDI with both label and description like this, we should ignore/hide them from the orphaned list.

Origin

See https://xcp-ng.org/forum/topic/9551/xenserver-8-with-pvs-accelerator-showing-full-orphan-vdis