[Users] ovirt 3.1 guest pxe boot fails

[Yuriy Demchenko]

Hi,

I've checked this issue with ipxe-roms-qemu from default fedora repo 
(ipxe-roms-qemu-20120328-1.gitaac9718.fc17) - same behaviour: first time 
system pxe boots fine after domain start, but after guest-reboot - pxe 
boot fails, cant get ip from dhcp and malformed packets on bridge interface.
And same situation with fedora host not connected to ovirt (vm created 
with virt-manager)

Yuriy Demchenko

On 10/05/2012 11:55 AM, Yuriy Demchenko wrote:
> Hi,
>
> I cant use ipxe-roms-qemu-20120328-1.gitaac9718.fc17 from default repo 
> (cant boot from SAN with it - http://ipxe.org/err/1d704439), so i've 
> took srpm and rebuild it with lastest git sources
> so now i'm using ipxe-roms-qemu-20120926-1.git09cc63f.fc17
>
> still cant find logical connection between ipxe version and my 
> problem, as first boot never fails, only reboots initiated from guest 
> system does; same goes for real hardware - i chainload same ipxe rom 
> into real machine and it boots/reboots fine. dunno about qemu/kvm not 
> connected to ovirt - i'll check it out on a weekend.
>
> Yuriy Demchenko
>
> On 10/05/2012 01:16 AM, Rami Vaknin wrote:
>> On 10/04/2012 12:49 PM, Yuriy Demchenko wrote:
>>> Hi,
>>>
>>> I've started testing ovirt 3.1 in my lab environment and found some 
>>> strange behaviour/bug:
>>> when i create vm and set it to boot from network - first time it 
>>> boots fine
>>>> 14:23:43.718613 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, 
>>>> Request from 52:54:00:c7:76:50, length 395
>>
>> Although you managed to boot from network in the first time, I'm not 
>> sure that DHCP packet with length of 395 is ok - I think it should be 
>> ~60, I would start with checking the gpxe-roms-qemu package version.
>>
>>> pxe works, ip address received and machine boots,
>>> but if I'll restart it via guest command 'reboot' (i.e not through 
>>> stop/start from ovirt admin interface) - pxe boot fails, ipxe just 
>>> states timeout on dhcp requests
>>> and with tcpdump i even cannot see any dhcp requests at all!
>>> instead of that i get some weird malformed packets:
>>>> 14:21:38.529244 00:00:00:00:ff:ff > 00:00:00:00:00:00, ethertype 
>>>> Unknown (0xffff), length 447:
>>>>     0x0000:  ffff 5254 00c7 7650 0800 4500 01a7 0322 ..RT..vP..E...."
>>>>     0x0010:  0000 4011 7625 0000 0000 ffff ffff 0044 .. at .v%.........D
>>>>     0x0020:  0043 0193 02f7 0101 0600 2c78 5053 000c .C........,xPS..
>>>>     0x0030:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x0040:  0000 5254 00c7 7650 0000 0000 0000 0000 ..RT..vP........
>>>>     0x0050:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x0060:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x0070:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x0080:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x0090:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x00a0:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x00b0:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x00c0:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x00d0:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x00e0:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x00f0:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x0100:  0000 0000 0000 0000 0000 0000 0000 0000 ................
>>>>     0x0110:  0000 6382 5363 3501 0139 0205 c05d 0200 ..c.Sc5..9...]..
>>>>     0x0120:  005e 0301 0201 3c20 5058 4543 6c69 656e .^....<.PXEClien
>>>>     0x0130:  743a 4172 6368 3a30 3030 3030 3a55 4e44 t:Arch:00000:UND
>>>>     0x0140:  493a 3030 3230 3031 4d04 6950 5845 3715 I:002001M.iPXE7.
>>>>     0x0150:  0103 0607 0c0f 112b 3c42 4380 8182 8384 .......+<BC.....
>>>>     0x0160:  8586 87af cbaf 2db1 0501 1af4 1000 2201 ......-.......".
>>>>     0x0170:  0119 0101 2101 0118 0101 1101 0113 0101 ....!...........
>>>>     0x0180:  1701 0115 0101 2701 0110 0102 1201 01eb ......'.........
>>>>     0x0190:  0301 0000 3d07 0152 5400 c776 5061 1100 ....=..RT..vPa..
>>>>     0x01a0:  21b3 bc0f e882 4017 9c20 f3e5 0afd 0547 !..... at ........G
>>>>     0x01b0:  ff                                       .
>>>
>>> As i'm planning to heavily rely on network booting this issue is 
>>> critical for me, any tips how to solve it?
>>>
>>> ovirt 3.1, engine and node on separate hosts, installed on clean 
>>> fedora 17/minimal, node with kernel-3.3.4-5.fc17.x86_64
>>> node has 1 nic, 1 network defined in ovirt - ovirtmgmt
>>>
>>
>>
>