AW: interface tun0 does not exist! -> HALF SOLVED

<thomas.vonsteiger@xxxxxxxxxx> · Wed, 6 Sep 2006 18:20:22 +0200

Title: interface tun0 does not exist!

Hello again,

I found the problem….stubid..

I have installed kernel-xen

With kernel-xen0 the
interface are there.

Becose then I can use
only 4Gb memory.

What can I to now do use
16G of memory ?

Thomas

Von: fedora-xen-bounces@xxxxxxxxxx
[mailto:fedora-xen-bounces@xxxxxxxxxx] Im
Auftrag von thomas.vonsteiger@xxxxxxxxxx

Gesendet: Mittwoch, 6. September
2006 17:36

An: fedora-xen@xxxxxxxxxx

Betreff:  interface
tun0 does not exist!

Hello,

I can not setup any guest’s
becose of missing interfaces.

/var/log/xend-debug.log:

Link veth0 is missing.

This may be because 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
loopback.nloopbacks=<N> on the

domain 0 kernel command line.

interface tun0 does not exist!

From dmesg:

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

/etc/grub.conf:

#
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

Hardware: HP DL380 G5, 16G memory, 4 nic’s from type bnx2, eth0 – eth3 are all there.

ifconfig –a prints eth0,eth1,eth2,eth3,lo

With kernel parameter “loopback.nloopbacks=128” i have the same problem.

Again with loopback.nloopbacks= …32,48,128,164,256… always no tun0 or xenbr0.

What can be wrong here ?

Many thanks for any help.

Thomas

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