Hi Andrew,
Great, BTW, in fact, you may pxe boot via VF of Intel82576, however, Intel82576
SR-IOV network adapters
don't provide a ROM BIOS for the cards virtual functions (VF), but an image of
such a ROM is available,
and with this ROM visible to the guest, it can PXE boot.
In libvirt's xml, you need to configure guest XML like this:
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address bus='XX' slot='XX' function='XX'/>
</source>
<boot order='1'/>
<rom bar='on' file='/xxxx/ipxe-808610ca.rom'/>
</hostdev>
You need to build a ipxe-808610ca.rom by yourself, if you're interested in this,
please refer to http://ipxe.org/.
--
Regards,
Alex
----- Original Message -----
From: "Andrew Holway" <a.hol...@syseleven.de>
To: "Alex Jia" <a...@redhat.com>
Cc: kvm@vger.kernel.org
Sent: Friday, August 31, 2012 9:32:24 PM
Subject: Re: [libvirt-users] vm pxe fail
Hi,
In the end the problem was SR-IOV enabled on the cards. I turned this off and
everything worked ok.
Im using HP 10G cards which are rebranded emulex.
0a:00.0 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev
01)
Thanks,
Andrew
On Aug 17, 2012, at 4:34 AM, Alex Jia wrote:
> Hi Andrew,
> I can't confirm a root reason based on your information, perhaps you may
> try to find a reason by yourself via the following docs:
>
> http://wiki.libvirt.org/page/PXE_boot_%28or_dhcp%29_on_guest_failed
> (Troubleshooting)
> http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/sect-Virtualization-Virtualized_guest_installation_overview-Installing_guests_with_PXE.html
> (User Guide)
>
> If can't, please provide your version of kvm, libvirt, tftp, etc, and run
> 'virsh net-dumpxml br0' to dump your
> network bridge XML configuration, and run 'cat pxelinux.cfg' to show your
> pxelinux configuration, thanks.
>
> --
> Regards,
> Alex
>
>
> ----- Original Message -----
> From: "Andrew Holway" <a.hol...@syseleven.de>
> To: kvm@vger.kernel.org
> Sent: Thursday, August 16, 2012 8:25:35 PM
> Subject: [libvirt-users] vm pxe fail
>
> Hallo
>
> 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
>
> Here is the terminal output from the VM:
> https://dl.dropbox.com/u/98200887/Screen%20Shot%202012-08-15%20at%206.41.12%20PM.png
>
> Thanks,
>
> Andrew
>
> [root@node002 ~]# yum list | grep qemu
> gpxe-roms-qemu.noarch 0.9.7-6.9.el6 @base
>
> qemu-img.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates
>
> qemu-kvm.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates
>
> qemu-guest-agent.x86_64 2:0.12.1.2-2.295.el6_3.1 updates
>
> qemu-kvm-tools.x86_64 2:0.12.1.2-2.295.el6_3.1 updates
>
> [root@node002 ~]# ethtool eth0
> Settings for eth0:
> Supported ports: [ TP ]
> Supported link modes: 10000baseT/Full
> Supports auto-negotiation: No
> Advertised link modes: 10000baseT/Full
> Advertised pause frame use: No
> Advertised auto-negotiation: No
> Speed: Unknown!
> Duplex: Unknown! (255)
> Port: Twisted Pair
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: off
> MDI-X: Unknown
> Supports Wake-on: g
> Wake-on: g
> Current message level: 0x00000014 (20)
> Link detected: no
>
> [root@node002 ~]# brctl show
> bridge name bridge id STP enabled interfaces
> br0 8000.009c02241ae0 no eth1
> vnet0
> virbr0 8000.525400a6d5aa yes virbr0-nic
>
> [root@node002 ~]# ethtool vnet0
> Settings for vnet0:
> Supported ports: [ ]
> Supported link modes:
> Supports auto-negotiation: No
> Advertised link modes: Not reported
> Advertised pause frame use: No
> Advertised auto-negotiation: No
> Speed: 10Mb/s
> Duplex: Full
> Port: Twisted Pair
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: off
> MDI-X: Unknown
> Current message level: 0xffffffa1 (-95)
> Link detected: yes
>
> <domain type='kvm'>
> <name>vm004</name>
> <uuid>4f03b09b-e834-bbf3-a6c2-1689f3156ef2</uuid>
> <memory unit='KiB'>2097152</memory>
> <currentMemory unit='KiB'>2097152</currentMemory>
> <vcpu placement='static'>2</vcpu>
> <os>
> <type arch='x86_64' machine='rhel6.3.0'>hvm</type>
> <boot dev='hd'/>
> </os>
> <features>
> <acpi/>
> <apic/>
> <pae/>
> </features>
> <clock offset='utc'/>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>restart</on_crash>
> <devices>
> <emulator>/usr/libexec/qemu-kvm</emulator>
> <disk type='file' device='disk'>
> <driver name='qemu' type='raw' cache='none'/>
> <source file='/cm/shared/vm/vm004.img'/>
> <target dev='hda' bus='ide'/>
> <address type='drive' controller='0' bus='0' target='0' unit='0'/>
> </disk>
> <disk type='block' device='cdrom'>
> <driver name='qemu' type='raw'/>
> <target dev='hdc' bus='ide'/>
> <readonly/>
> <address type='drive' controller='0' bus='1' target='0' unit='0'/>
> </disk>
> <controller type='usb' index='0'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> function='0x2'/>
> </controller>
> <controller type='ide' index='0'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> function='0x1'/>
> </controller>
> <interface type='bridge'>
> <mac address='00:00:00:00:00:0d'/>
> <source bridge='br0'/>
> <model type='rtl8139'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
> </interface>
> <serial type='pty'>
> <target port='0'/>
> </serial>
> <console type='pty'>
> <target type='serial' port='0'/>
> </console>
> <input type='mouse' bus='ps2'/>
> <graphics type='vnc' port='-1' autoport='yes'/>
> <video>
> <model type='cirrus' vram='9216' heads='1'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
> function='0x0'/>
> </video>
> <memballoon model='virtio'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x0'/>
> </memballoon>
> </devices>
> </domain>
>
>
>
> _______________________________________________
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> libvirt-us...@redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users
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