https://bugzilla.novell.com/show_bug.cgi?id=649584 https://bugzilla.novell.com/show_bug.cgi?id=649584#c2 --- Comment #2 from Harald Koenig 2010-10-27 14:42:46 UTC --- (In reply to comment #0)

this first showed up on my 64bit XEN dom0 server running kernel 2.6.34.7-0.4-xen being accessed as nfs server from a solaris 10 nfs client with udp protocoll (nfs via tcp works fine).

FYI: until recently that xen dom0 was running opensuse 11.2 (2.6.31.12-0.2-xen) which worked fine with udp nfs over br0 too!). the problem showed up immediately after upgrading from 11.2 to 11.3 :-( -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=649584 https://bugzilla.novell.com/show_bug.cgi?id=649584#c5 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO InfoProvider| |koenig@linux.de --- Comment #5 from Neil Brown 2010-10-29 08:30:07 UTC --- So the UDP GETPORT reply gets through OK, but the UDP NFS/NULL reply doesn't. That seems significant. There must be some difference between the way NFS sends a reply and the way the GETPORT reply is sent. Please check if you are running 'portmap' or 'rpcbind' on the NFS server and report which. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=649584 https://bugzilla.novell.com/show_bug.cgi?id=649584#c7 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED --- Comment #7 from Neil Brown 2010-11-23 07:16:33 UTC --- I can definitely reproduce this. I had a theory that something was going wrong with sendmsg. nfsd uses sendmsg as does portmap, but rpcbind used sendto. However I have now ruled that out. It looks like I might have to try bisecting. It is almost certainly a problem with the bridging interface interacting poorly with sunrpc in the kernel, but I cannot guess what it would look like.. I'll try to dig more deeply tomorrow. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=649584 https://bugzilla.novell.com/show_bug.cgi?id=649584#c9 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |koenig@linux.de --- Comment #9 from Neil Brown 2010-12-02 01:21:28 UTC --- There is something really weird happening here. I have reproduce this on my notebook with openSUSE:11.3, but not on my test machine with openSUSE:Factory installed nor on a kvm virtual machine with openeSUSE:11.3 installed. May it is hardware-specific ... what network controller do you have on your NFS server ? (lspci | grep -i net). -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=649584 https://bugzilla.novell.com/show_bug.cgi?id=649584#c11 Harald Koenig changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |ASSIGNED InfoProvider|koenig@linux.de | --- Comment #11 from Harald Koenig 2010-12-02 16:29:21 UTC --- (In reply to comment #9)

There is something really weird happening here.

I have reproduce this on my notebook with openSUSE:11.3, but not on my test machine with openSUSE:Factory installed nor on a kvm virtual machine with openeSUSE:11.3 installed.

May it is hardware-specific ... what network controller do you have on your NFS server ? (lspci | grep -i net).

my notebook (for the "real" kernel test, I was using the internal e1000 as eth0): $ /sbin/lspci | grep -i net 00:19.0 Ethernet controller: Intel Corporation 82566MM Gigabit Network Connection (rev 03) 03:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61) 16:00.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41) and the XEN dom0 server (tested both interfaces): /sbin/lspci | grep -i net 04:00.0 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper) (rev 01) 04:00.1 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper) (rev 01) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=649584 https://bugzilla.novell.com/show_bug.cgi?id=649584#c13 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |koenig@linux.de --- Comment #13 from Neil Brown 2011-02-22 03:11:09 UTC --- Hi, have you had a chance to try a new kernel yet to see if that overcomes the problem? Thanks. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=649584 https://bugzilla.novell.com/show_bug.cgi?id=649584#c15 Erik Brakkee changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |erik@brakkee.org --- Comment #15 from Erik Brakkee 2012-02-11 19:22:46 UTC --- I encountered a similar issue today. What I did was I moved a KVM virtual machine from a server to a laptop. The virtual machine is running opensuse 11.3 as was the host server on which it was running before. I use a bridged setup for the network interface. My laptop is running opensuse 12.1. After moving the virtual machine on my laptop, I immediately noticed that my TVIX M-6500 box could not successfully mount the NFS shares anymore. Looking in the server logs of the virtual machine however did not show anything significant. When opening the NFS directory on the TVIX, the server logs show Feb 11 20:11:25 shikra mountd[4032]: authenticated mount request from 192.168.2.4:636 for /data (/data) This is similar output to what I get when mounting the same directory from a linux box (opensuse 11.3 and opensuse 12.1). Because of this I was thinking that perhaps the TVIX box was using UDP and the linux machines were using TCP which could be the difference. Then I tried replacing the Device model for the network card in the VM from virtio to rtl8139, and after this it works. Therefore, my conclusion is that it is somehow an interoperability issue with the virtio driver in guest and host machines. Apparently this driver is not fully downwards compatible. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.