This evening I will be booting ice into a new kernel to test NFS.
I am working with a Linux kernel developer to debug some kernel nfs server issues that are new to the 5.7.x kernels. I plan to boot into the new kernel around 11pm, then things may or may not be interrupted for some time if NFS does not work while I gather information that may be helpful to the kernel developers before reverting to a known good kernel.
This will affect mail, and also vps1 through vps7 but not higher numbered virtual machines. The virtual machines will only be down for minutes during the boot, mail be unavailable for a longer period as it is what is affected by the NFS problems and it may take some time to gather all of the necessary information to allow a fix to be developed.