<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)">  <title>interface tun0 does not exist!</title> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PersonName"/>  <style>  </style> </head> <body lang=DE-CH link=blue vlink=purple> <div class=Section1> Hello again,<o:p></o:p> <o:p> </o:p> I found the problem….stubid..<o:p></o:p> <o:p> </o:p> I have installed kernel-xen<o:p></o:p> With kernel-xen0 the interface are there.<o:p></o:p> Becose then I can use only 4Gb memory.<o:p></o:p> <o:p> </o:p> What can I to now do use 16G of memory ?<o:p></o:p> <o:p> </o:p> Thomas<o:p></o:p> <o:p> </o:p> <div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'> <div> <div class=MsoNormal align=center style='text-align:center'> <hr size=2 width="100%" align=center tabindex=-1> </div> Von: fedora-xen-bounces@redhat.com [mailto:fedora-xen-bounces@redhat.com] Im Auftrag von <st1:PersonName w:st="on">thomas.vonsteiger@bluewin.ch</st1:PersonName> Gesendet: Mittwoch, 6. September 2006 17:36 An: fedora-xen@redhat.com Betreff: [Fedora-xen] interface tun0 does not exist!<o:p></o:p> </div> <o:p> </o:p> Hello,<o:p></o:p> I can not setup any guest’s becose of missing interfaces.<o:p></o:p> /var/log/xend-debug.log:<o:p></o:p> Link veth0 is missing.<o:p></o:p> This may be because you have reached the limit of the number of<o:p></o:p> interfaces that the loopback driver supports. If the loopback driver is<o:p></o:p> a module, you may raise this limit by passing it as a parameter<o:p></o:p> (nloopbacks=<N>); if the driver is compiled statically into the kernel,<o:p></o:p> then you may set the parameter using loopback.nloopbacks=<N> on the<o:p></o:p> domain 0 kernel command line.<o:p></o:p> interface tun0 does not exist!<o:p></o:p> interface tun0 does not exist!<o:p></o:p> interface tun0 does not exist!<o:p></o:p> interface tun0 does not exist!<o:p></o:p> From dmesg:<o:p></o:p> bnx2: eth0 NIC Link is Up, 1000 Mbps full duplex bnx2: eth1 NIC Link is Up, 1000 Mbps full duplex bnx2: eth2 NIC Link is Up, 1000 Mbps full duplex bnx2: eth3 NIC Link is Up, 1000 Mbps full duplex<o:p></o:p> /etc/grub.conf:<o:p></o:p> # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/fcvg/slash # initrd /initrd-version.img #boot=/dev/cciss/c0d0 default=0 timeout=10 splashimage=(hd0,0)/grub/splash.xpm.gz #hiddenmenu title Fedora Core (2.6.17-1.2174_FC5xen) root (hd0,0) kernel /xen.gz-2.6.17-1.2174_FC5-PAE dom0_mem=512000 loopback.nloopbacks=128 module /vmlinuz-2.6.17-1.2174_FC5xen ro root=/dev/fcvg/slash module /initrd-2.6.17-1.2174_FC5xen.img title Fedora Core (2.6.17-1.2174_FC5smp) root (hd0,0) kernel /vmlinuz-2.6.17-1.2174_FC5smp ro root=/dev/fcvg/slash initrd /initrd-2.6.17-1.2174_FC5smp.img title Fedora Core 5 (2.6.15-1.2054_FC5smp) root (hd0,0) kernel /vmlinuz-2.6.15-1.2054_FC5smp ro root=/dev/fcvg/slash initrd /initrd-2.6.15-1.2054_FC5smp.img<o:p></o:p> Hardware: HP DL380 G5, 16G memory, 4 nic’s from type bnx2, eth0 – eth3 are all there.<o:p></o:p> ifconfig –a prints eth0,eth1,eth2,eth3,lo<o:p></o:p> With kernel parameter “loopback.nloopbacks=128” i have the same problem.<o:p></o:p> Again with loopback.nloopbacks= …32,48,128,164,256… always no tun0 or xenbr0.<o:p></o:p> What can be wrong here ?<o:p></o:p> Many thanks for any help.<o:p></o:p> Thomas<o:p></o:p> </div> </div> </body> </html>