We just upgraded our PVS servers and infrastructure to v7.11 & XenServer 7, and after that we have severe issues with freezing and slowness when we put our dynamic vDisks into maintenance mode for upgrading. When we run the vDisks in production mode we see only minor issues with 5-10 retries errors in the vDisk properties field (PVS agent). But when we try to write changes to the disk it goes on for a couple of seconds, freezes after anything from 30-500 retries. Machine is still pingable, but refuses to respond to commands.
The issues started when we upgraded our XenServer infrastructure from 6.5 to XenServer 7. At first we thought this was related to PVS v7.6 FR3 was not fully compatible with XenServer 7. But now when we have upgraded our PVS servers from v7.6 FR3 -> v7.11 this issue still remains. So it seems to be partially due to XenServer 7.
Things we have tried together with Citrix support:
PVS v184.108.40.206 running on a Windows Server 2012R2 – Exclusions for virus protection, diskabletaskoffload=1, firewalls off etc..
PVS streamed server running on a Windows Server 2012R2 - diskabletaskoffload=1, BNSStack parameters changes back and forth to get rid of errors (not helping), we have tries with or without all Send/Receive offloads set on the NIC, IPv6 disabled, firewalls off etc.
After putting Hotfix XS70E13 on the XenServers we use for our developement environment it doesn´t freeze as often, but we still get hundreds of retries. Any idés out there or sharing the same experience?