Re: [libvirt-users] Help with Vrbr0

On Friday 22 November 2013 01:33 PM, Sherin A wrote: > On Friday 22 November 2013 01:24 PM, Gao feng wrote: >> On 11/22/2013 03:47 PM, Sherin A wrote: >>> Hello, >>> >>> I am not able to see vrbr0 in my box. Can some one help me >>> with this ? . I am trying KVM+libvirt and planing to use Routed >>> mode. I hope this virbr0 must be up for using this . I can give an >>> strace too. >>> >>> OS : Debian , kernel 3.12.0 >>> libvrit version : 0.9.8 >>> ____________________________________________________________________ >>> root@:~# ifconfig >>> br0 Link encap:Ethernet HWaddr 4c:72:b9:32:32:86 >>> inet addr:10.0.0.12 Bcast:10.0.0.255 Mask:255.255.255.0 >>> inet6 addr: fe80::4e72:b9ff:fe32:3286/64 Scope:Link >>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 >>> RX packets:4523 errors:0 dropped:0 overruns:0 frame:0 >>> TX packets:4068 errors:0 dropped:0 overruns:0 carrier:0 >>> collisions:0 txqueuelen:0 >>> RX bytes:2286336 (2.2 MB) TX bytes:411238 (411.2 KB) >>> >>> eth0 Link encap:Ethernet HWaddr 4c:72:b9:32:32:86 >>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 >>> RX packets:17044 errors:0 dropped:0 overruns:0 frame:0 >>> TX packets:14253 errors:0 dropped:0 overruns:0 carrier:0 >>> collisions:0 txqueuelen:1000 >>> RX bytes:12594945 (12.5 MB) TX bytes:1902456 (1.9 MB) >>> Interrupt:20 Memory:f7c00000-f7c20000 >>> >>> lo Link encap:Local Loopback >>> inet addr:127.0.0.1 Mask:255.0.0.0 >>> inet6 addr: ::1/128 Scope:Host >>> UP LOOPBACK RUNNING MTU:65536 Metric:1 >>> RX packets:4 errors:0 dropped:0 overruns:0 frame:0 >>> TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 >>> collisions:0 txqueuelen:0 >>> RX bytes:240 (240.0 B) TX bytes:240 (240.0 B) >>> >>> ------------------------------------------------------------------- >>> root@:~# virsh net-start default >>> error: Failed to start network default >>> error: failed to add iptables rule to enable masquerading >>> >>> root@:~# virsh net-list --all >>> Name State Autostart >>> ----------------------------------------- >>> default inactive yes >>> >>> root@:~# virsh net-start default >>> error: Failed to start network default >>> error: failed to add iptables rule to enable masquerading >>> >> seems like your kernel doesn't have ipt_MASQUERADE installed. >> try modprobe ipt_MASQUERADE >> > Hi Gao, > > > Yes , it looks like I am missing more module. I will recompile the > kernel and test more, the following is the reason behind this issue. > > root@:~# tail /var/log/libvirt/libvirtd.log > 2013-11-22 07:43:06.388+0000: 4328: error : virCommandWait:2192 : > internal error Child process (/sbin/iptables --table nat --insert > POSTROUTING --source 192.168.122.0/24 ! --destination > 192.168.122.0/24 --jump MASQUERADE) status unexpected: exit status 3 > 2013-11-22 07:43:06.388+0000: 4328: error : > networkAddMasqueradingIptablesRules:966 : failed to add iptables rule > to enable masquerading > > root@:~# /sbin/iptables --table nat --insert POSTROUTING --source > 192.168.122.0/24 ! --destination 192.168.122.0/24 --jump MASQUERADE > iptables v1.4.12: can't initialize iptables table `nat': Table does > not exist (do you need to insmod?) > Perhaps iptables or your kernel needs to be upgraded. > root@# find /lib/modules/`uname -r` -iname "ipt*.ko" > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_ULOG.ko > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_REJECT.ko > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/iptable_raw.ko > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/iptable_filter.ko > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_CLUSTERIP.ko > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_ah.ko > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/iptable_mangle.ko > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/iptable_security.ko > > /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_ECN.ko > root@~# > root@myhome:~# lsmod | grep ipt > ipt_REJECT 12541 0 > iptable_mangle 12695 0 > iptable_filter 12810 0 > ip_tables 26952 2 iptable_mangle,iptable_filter > x_tables 29804 11 > xt_physdev,ip6table_filter,ip6_tables,ebtables,xt_state,ipt_REJECT,xt_CHECKSUM,iptable_mangle,xt_tcpudp,iptable_filter,ip_tables > root@:~# modinfo iptable_nat > ERROR: modinfo: could not find module iptable_nat > root@:~# > > I will compile the kernel and get back soon. > I fixed the iptable issue . But it is still not showing vrbr0 . Now it shows the following error , root@myhome:~# virsh net-list --all Name State Autostart ----------------------------------------- default inactive yes root@myhome:~# virsh net-start default error: Failed to start network default error: internal error Child process (/usr/sbin/dnsmasq -u libvirt-dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override) status unexpected: exit status 2 2013-11-22 10:42:51.113+0000: 1288: error : virCommandWait:2192 : internal error Child process (/usr/sbin/dnsmasq -u libvirt-dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override) status unexpected: exit status 2