Hi,
I am wondering if that's normal:
Using Storage Spaces on Windows 2012R2, and Hyper-V 2012R2.
The Guest ist a Windows 2016.
We want to use Dedup within the Guest.
When I use a VHDX, it will grow and not shrink automatically, meaning, it will use more Storage as necessary on Storage Spaces.
When using a Passthrough Disk I hoped, Trim would work correct, but it doesn't.
I tested it, deleted files, and ran
Optimize-Volume -DriveLetter W –ReTrim -verbose-SlabConsolidate
Within the guest, it always shows the old used space, and never trims it.
If I shutdown the VM, set this drive online on the root node and run the command, space is reclaimed right away.
Does it really mean, there is no normal way to reclaim space when having a heavily changing storage within the guest, as it seems it's not even working with a Passthrough disk?
Thanks
Patrick