Hello,
I am experiencing the same issue since one week and this is corresponding to the upgrade of our ESXs to 5.1.0 1157734, but I'm not sure this is is related to.
Side effect are:
- Very high disk latency peaks (up to 10s!)
- Instability
- Lost of storage paths on some ESX.
- Inconsistencies of some virtual hard disk
Restarting the ESX solves the problem, but it comes back as soon as we have more disk access (i.e. during backup)
How did you solve the problem?
Thanks a lot for your feedback and best regard