--On 11 February 2014 18:20 +0100 Roger Pau Monné <roger....@citrix.com>
Just to clarify, are you unable to reach a FreeBSD PV DomU from a
Windows PV DomU on the same host, or are you unable to route traffic
trough a FreeBSD PV DomU (on the same host)?
(ie. can you ssh from the Windows PV DomU into the FreeBSD PV DomU?)
ssh from the Windows PV host to the FreeBSD PV DomU host appears to work
fine. Attempting to 'route' traffic from the Windows PV host 'through' the
FreeBSD PV DomU fails - pings go, DNS goes, initial TCP 'setups' go - but
stuff dies thereafter (i.e. may be packet size related or something).
Move the FreeBSD PV DomU host to the other XenServer - works. Disabled PV
NIC in windows, it works. Run up the FreeBSD PV as HVM (i.e. Realtek) -
works. Replace FreeBSD with Linux - it works. So FreeBSD PV on same
XenServer as Windows, fails.
The only combination I've not tested is FreeBSD DomU PV host trying to use
the FreeBSD DomU PV other host as a gateway. I've no reason to believe that
won't fail (with the same circumstances as above).
The Windows PV Host has 1 NIC which is attached to Xen network 'Office
Network' (using e.g. 10.0.0.10).
The FreeBSD PV Host has 2 NIC's - Interface 0 is attached to Xen network
'Office Network' (using e.g. 10.0.0.1) - Interface 1 is attached to Xen
network 'ADSL Network' (using e.g. 192.168.1.10)
The FreeBSD DomU PV host gateway can ping / fetch data fine from the ADSL
connection itself, fine. It's setup to NAT for the Office Network (standard
So it looks like it might actually be a FreeBSD/Xen issue?
Yes, it looks that way (dunno if netback might also be involved in this)
Doh! :( That's annoying ;)
I have to look into this, FreeBSD should not panic when trying to boot
without XENHVM on a DomU.
Ok the panic wasn't reproducible - I don't know what I did to that kernel
build, but re-building GENERIC without the Xen options results in a kernel
that boots ok in with HVM drivers (i.e. Realtek NIC's) - and using these
fixes the problem (as evidenced above).
You could try to disable the following:
ifconfig xnX -rxcsum -txcsum -tso4 -lro
No combination of those made any difference (which I guess is both a good
and a bad thing).
Anything else you can think of / worth trying? - As I said I'm running the
XenServer distribution ISO (with SP1) - I'm not sure if that has support
for much debugging stuff built in?
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