Re: vm pxe fail

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Aug 16, 2012, at 3:54 PM, Stefan Hajnoczi wrote:

> On Thu, Aug 16, 2012 at 1:25 PM, Andrew Holway <a.holway@xxxxxxxxxxxx> wrote:
>> I have a kvm vm that I am attempting to boot from pxe. The dhcp works perfectly and I can see the VM in the pxe server arp. but the tftp just times out. I don't see any tftp traffic on either the physical host or on the pie server. I am using a bridged interface. I have tried using several virtual nic drivers, several different mac addresses and several different ips.  on the physical host I can get the pxelinux.0 file from the pxe server via tftp and can clearly see that traffic with tcpdump.
>> 
>> Ive tried using various virtual interfaces.
>> 
>> I can pxe boot my physical hosts with no problems.
>> 
>> I can tftp fine from the physical host and see the traffic with ethdump
> 
> Have you run tcpdump on the tap interface?  (This is different from
> running tcpdump on host eth0 because it is earlier in the network path
> and happens before the software bridge.)

Yes. I can just see DHCP traffic.

> 
> What do iptables -L -n and ebtables -L say?
> 

[root@node002 ~]# iptables -L -n 
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0           udp dpt:53 
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           tcp dpt:53 
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0           udp dpt:67 
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           tcp dpt:67 

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  0.0.0.0/0            192.168.122.0/24    state RELATED,ESTABLISHED 
ACCEPT     all  --  192.168.122.0/24     0.0.0.0/0           
ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           
REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-port-unreachable 
REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-port-unreachable 

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination  


[root@node002 ~]# ebtables -L
Bridge table: filter

Bridge chain: INPUT, entries: 0, policy: ACCEPT

Bridge chain: FORWARD, entries: 0, policy: ACCEPT

Bridge chain: OUTPUT, entries: 0, policy: ACCEPT

[root@node002 ~]# tcpdump -i vnet0 udp
tcpdump: WARNING: vnet0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on vnet0, link-type EN10MB (Ethernet), capture size 65535 bytes
17:08:08.849344 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:00:00:00:00:0d (oui Ethernet), length 387
17:08:08.849413 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:00:00:00:00:0d (oui Ethernet), length 387
17:08:08.849661 IP master.cm.cluster.bootps > 255.255.255.255.bootpc: BOOTP/DHCP, Reply, length 360
17:08:09.812645 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:00:00:00:00:0d (oui Ethernet), length 387
17:08:09.812709 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:00:00:00:00:0d (oui Ethernet), length 387
17:08:09.812903 IP master.cm.cluster.bootps > 255.255.255.255.bootpc: BOOTP/DHCP, Reply, length 360
17:08:11.789993 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:00:00:00:00:0d (oui Ethernet), length 399
17:08:11.790107 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:00:00:00:00:0d (oui Ethernet), length 399
17:08:11.790294 IP master.cm.cluster.bootps > 255.255.255.255.bootpc: BOOTP/DHCP, Reply, length 360


And then…….silence!



> Stefan


--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux