Hello everyone.
We have a setup with 4x hosts running WS2012R2 Datacenter Hyper-V towards 2x Fileservers WS2012R2 connected to a shared JBOD. All of the servers communicate over infiniband.
We run the Hyper-V over SMB with RDMA on a CSV volume that has deduplication enabled.
We were so happy that Window server 2012 R2 was released recently so we upgraded right away and finnaly things were stable , no longer any spamming errors of hard disks in use or bsoding hosts! All have been great since the release but something happened this weekend without any of us doing any changes.
All of a sudden my System Center 2012 VMS running SQL clusters with the new "Shared VHDX" feature failed. I started to investigate the problem and it seems that we cannot "change or edit" any virtual hard disks on our entire VM share. If i try to use advance features and change to shared vhdx it fails, it does not matter if its a new vm i create or a old one.
I need some help with this, I feel clueless to why it happened or how to fix it?
Thank you,
Marcus
Sweden