@bleader said in Created a new bond interface and lost management connectivity to hosts:
The original problem could be a known issue when creating bond including the management interface that we have to investigate. Although the emergency network reset should have fixed that, so maybe it is a mix of the bond creation issue and MTU issue.
In the reinstalled pool, did you create the bonds already? If so I would think changing the MTU should be fine, especially as it worked on other PIF, but with MTU issue it is often quite sneaky, so I would not make any promises either.
Yes I have recreated them, but I am not game enough yet to change the management interfaces to MTU 9000, though I have done on bridge interfaces for VMs, because I was losing ssh sessions, and this solved the issue. Also, the bonded storage interface is MTU 9000 no problem.