On Tue, May 30, 2017 at 08:03:12PM +0300, Michael S. Tsirkin wrote: > On Fri, May 26, 2017 at 03:31:33PM -0400, bfields@xxxxxxxxxxxx wrote: > > Looks like the culprit is very likely d85b758f72b0 "virtio_net: fix > > support for small rings". > > > > After that patch, my NFS server VM stops responding to packets after a > > few minutes of testing. Before that patch, my server keeps working. > > > > --b. > > > So I think I know what caused this: looks like some hypervisors > aren't prepared to deal with a situation where packet size > becomes very small. > > But which hypervisors exactly? I'd like to know in order to detect these > and decide whether I blacklist bad ones or whitelist known-good ones. I'm running this under KVM on a Fedora 25 host (4.10.15-200.fc25.x86_64). Let me know if any more details about the setup would be useful. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
