On 08/02/14 16:03, Karl Pielorz wrote: > > Hi, > > I've got an 'issue' (more with Xen than FreeBSD) - the upshot is, I need > to disable the PV NIC (xn) from a VM running XENHVM kernel. > > Is this possible? - In an ideal world I'd like to keep the storage > drivers etc. - I just need to use the HVM 're' interface, not 'xn' > interface... > > For those who want to know what the issue is - we have a number of VM's > on 1 Xen machine (e.g. 'Xen1') all using PV drivers (Windows and FreeBSD > VM's). A FreeBSD VM is the 'default' gateway for the others - and it > doesn't work :( > > Packets are either going missing - or getting mangled. If you 'migrate' > one of those hosts to another Xen machine in the pool (e.g. Xen2) it works. > > If you migrate the default gateway VM over to the other Xen machine - > all the other VM's on the original XenServer suddenly work (i.e. can see > the outside world) - alternatively if you switch from PV drivers to HVM > drivers on the affected guests - everything works, regardless of whether > the VM's are on Xen1, Xen2 - or the same XenServer as the default > gateway VM. > > Only PV <-> PV shows the issue, and only when they're both hosted on the > same XenServer. > > Hence wondering about disabling the PV nic on the default gateway, > instead of having to do it on all the other VM's...
That's quite weird... Do you see any messages in the Xen console (xl dmesg)? Can you boot with a hypervisor compiled with debug=y and see if there are any strange messages on the Xen console? Also, does replacing the FreeBSD gateway VM with a Linux PV VM solve the issue? (ie. just to check if Linux also shows this behaviour) Roger. _______________________________________________ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"