search for: netloop

Hi, I was hoping someone on this forums could help me out with a problem I was facing with Xen. When I compiled the kernel for Xen-3.1.3 using "make world"(I know this is an old version but I need to use it for some compatibility issues), the kernel was missing the Xen netloop module. There was no /kernel/drivers/xen/netback/netloop.ko in the newly compiled kernel. I think we would need that module to enable the bridging between the VM and the physical machine interfaces so that we can migrate the VM. Does anyone know how to solve this problem? or a workaround? Than...

Package: xen-utils-common Version: 3.0+hg11292-2 Severity: normal After a recent etch upgrade (2.6.17, xen-3.0.2) I was unable to "xm create" until I "modprobe netloop nloopbacks=10" Error was network-bridge couln't create vif interface (backend not found). brctl addbr ... fails because of no free netloop device. passing more nloopbacks device to the module fixed the problem. I use : (network-script network-bridge) (vif-script vif-bridge) Maybe this...

Hi list, since release 5.3 all kernels ignore options netloop nloopbacks=<n> within /etc/modprobe.conf If <n> is smaller than four there are always four vifs created. If <n> is bigger than four the appropriate number of vifs are created. Is this expected/new/feature/bug? Henry

Hi, with reference to RH BZ#567540 [0], this patch makes the netloop module permanent (like netback is currently). It reverts parts of xen-unstable c/s 9019:271cb04a4f2b [1] [2] (though that has a typo: "__init clean_loopback", so it was probably changed later too). The patch fixes the problem of "rmmod netloop" hanging, resulting in blocked tas...

Hi, I''m playing with xen from a couple of weeks, all standard configurations work fine within my suse box. But trying to become closer to the xen philosophy I can''t understand the issues which drown developers to use netloop module instead of the tap one. thank''s in advance _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

...consider as a hub. dom0 can be outside of these virtual networks. With IP on bridge, dom0 will exists on these networks, and I just don''t want that. Reading network-bridge (or vif-bridge I don''t remember, I''m not at home) this is because Xen doesn''t use anymore netloop. Is it possible to use network scripts from 3.1 version in older version ? Or does anybody has any idea how I could recreate these virtual networks without connecting my dom0 on each network using recent Xen version ? Thanks for your feedback. _______________________________________________ Xen...

It appears that this bug is caused by the netloop kernel module not being automatically loaded. xn

Package: xen-utils-common Version: 3.0+hg11624-2 Severity: normal I'm running etch with xen 3.0.3 with a hand-compiled 2.6.18.1 kernel. The /etc/xen/scripts/network-bridge fails to run, because it (effectively) does this: set -e modprobe netloop > /dev/null 2>&1 As I do not have a netloop module (where is it supposed to come from ? The 2.6.18.1 xen-patched kernel doesn't have the string netloop in there anywhere) the script exits right there. The following patch fixes it: --- network-bridge.ORIG 2006-10-08 19:04:48.0000000...

I tried netperf / netserver with Dom0 / DomU, but I could''nt get a correct NW traffic with xentop. Is there anybody could help me? At Host1''s Dom0, run netperf -H VMIP At Host2''s DomU (with VMIP named TTVM), run netserver At Host1, run xentop this way ->"xentop -n -b -d 1" At Host2, run xentop this way->"xentop -n -b -d 1" In Host2''s

...0.2-1 because the version-number of the package suggests that it is an other version, than the subdir says. Every time when I call xm for example I get: WARING! Can't find version 3.0.2-3-1 of xen utils, fallback to default version! 2. The script network-bridge tries to load the kernel-module netloop at the top of the script modprobe netloop > /dev/null 2>&1 this fails because there is no module and the script does not create any interfaces and stops. I think it's build into the xen-kernel. The bridge-interfaces where created after removing this line from the script. I'm usin...

Hi, this is propably bridge related and not really a xen problem, but it might help someone: Some of our domUs are not able to arp. Arp -n show (incomplete), and doing a tcpdump shows, that on the dom0''s eth0 the arp request goes out, the response comes in, but on the vifX.0 interface the arp response is gone. dom0# tcpdump -ni eth0 arp who-has 10.32.2.51 tell 10.32.7.70 arp reply

...use you have reached the limit of the number of interfaces that the loopback driver supports. If the loopback driver is a module, you may raise this limit by passing it as a parameter (nloopbacks=<N>); if the driver is compiled statically into the kernel, then you may set the parameter using netloop.nloopbacks=<N> on the domain 0 kernel command line. In my /boot/grub/menu.lst I have this : module /boot/vmlinuz-2.6.18.8-xen0 root=/dev/md0 ro console=tty0 fastboot netloop.nloopbacks=99 Where is my problem ? Thanks -- ''''~``...

The FAQ says to use loopback.nloopbacks to limit the number of vif''s and veth''s that show up in dom0. This no longer appears to work. Has this been remove with no replacement or has this just changed and the FAQ hasn''t kept up? -- Jason The place where you made your stand never mattered, only that you were there... and still on your feet

Hi, I''m trying to install xen with this configuration: dom0 -> Centos 5.3 dom1 -> Fedora 10 dom2 -> Fedora 10 Centos kernel = (2.6.18-128.1.10.el5.centos.plusxen) XEN Version = 3.0.3 I''m having some problems trying to install xen on my mychine, but i''ve been able to solve all of them but one: i can''t reach my gateway from

...ter:~# lsmod Module Size Used by xt_tcpudp 3904 4 xt_physdev 3792 8 iptable_filter 3872 1 ip_tables 13892 1 iptable_filter x_tables 14084 3 xt_tcpudp,xt_physdev,ip_tables bridge 50300 1 xt_physdev netloop 7360 0 raid456 116496 1 xor 15144 1 raid456 loop 15944 0 ide_cd 36832 0 cdrom 33344 1 ide_cd ide_disk 15712 6 generic 5636 0 [permanent] floppy 5...

...39;t run, >> but why? I can't see any init script or so that might run it, so I assume >> it's xend doing that, but there's no error in any log. > >Kai, > >Snooping around I found this in /etc/xen/qemu-ifup: > ># ># Old style bridge setup with netloop, used to have a bridge name ># of xenbrX, enslaving pethX and vif0.X, and then configuring ># eth0. ># ># New style bridge setup does not use netloop, so the bridge name ># is ethX and the physical device is enslaved pethX ># ># So if... ># ># - User asks for x...

...was missing, it said maybe because of not enough available loopback devices. I think more that this had to to with the bond0 interface. However, I followed the advice, and created some files below /etc/modprobe.d with following contents: cat /etc/modprobe.d/*loop options loop max_loop=64 options netloop nloopbacks=64 Also, with the bond interface, when the ordinary network started, it created the bond0 interface, and I was able to ping it for some seconds, until xend was started, and it tried to add the bond0 to the xenbr0. when I now restart xend, I have veth0-veth63 and I have vif0.0-vif0.63...

I have a new x3655 IBM and whenever the /etc/xen/scripts/network-bridge script starts, the ethernet would no longer work. This post isn''t about the cause, but the fix. I did a lot of tcpdumps and Googling, but I''ll spare you that. All they do is prove that yes, there is an issue. :) I tried Debian 4.0 i386/amd64 and Ubuntu 7.04 Server i386/amd64 and they all exhibit the

Somehow I managed to disable the creation of xenbr0 on boot-up of the host system. CentOS 5 with standard CentOS Xen. I changed all Xen VMs to use xenbr0 instead of virbr0 and disabled virtlibd. Works fine. But when I later restarted the machine I found that all networking for guests had gone. On inspection there's no xenbr0 created anymore. I can get it up by stopping network (or eth0)

...ake install-tools # make install-xen Development deps were all meet, everything compiled w/o error. Used yum to install kernel-xen bridge-utils bridge-utils gtk-vnc (did I need that?) Edited grub to use 3.3''s hypervisor. chkconfig xend on After a reboot, netbk, xenblk, blktap, blkbk, and netloop modules were not loaded, so moprobe''ing them in got everything working. What''s the right way to get this accomplished? Thanks, jlc _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users