Hyper-V and resizing VHD's

[Chiefcrowe]

Right, I am using iscsi to connect to my storage.

and just to clarify, in hyperV you don't have to restart the host to do any of this stuff.. and in most SANs I think you can expand the LUN while it is online and being used.

In this particular testing I didn't expand the LUN but I have in the past and it was fine.

Here's a link about storage options in HyperV. I haven't read through it all yet but I thought that for raw device mapping, they only support pass through disks.

https://blogs.technet.com/b/josebda...ws-server-2008-s-hyper-v.aspx?Redirected=true

I only occasionally need to dig around in hyper-v, but I'm pretty sure the LUN is not presented to the vm unless you're using iscsi or some sort of raw device mapping (do they have this in hyper-v?). I don't think he changed the LUN size, but increased the size of the vm disk in the hypervisor with the vm offline. When booting up the vm windows doesn't recognize the new size of the disk without a rescan, after which it will see the new size and you can increase the size of the volume.