April 2011 - Users - libvirt List Archives

[libvirt-users] kvm virtual server boot order
by Yee Ja 21 Apr '11

21 Apr '11

The boot order issue http://osdir.com/ml/libvir-list/2009-08/msg00398.html resolved with the code changes specified by http://www.redhat.com/archives/libvir-list/2009-August/msg00340.html seems to suggest that hard disks, cdroms, floppy devices (since they are all disks) are ordered primarily by virtual bus type as encountered in the domain xml. This indicates that there can exist a conflict between the primary and secondary boot device types. Given the scenario where the disks of a virtual server are defined in the following order harddisk hda harddisk vda cdrom vdb cdrom hdb Boot device type is crdom. Which cdrom device will be boot attempted? >From the above links, I'm guessing that hdb will be boot attempted. Is this the actual behavior? Thanks, Yee -- yja(a)us.ibm.com * 512-286-6793 T/L 363 * Systems Management Software Development * Austin, TX

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[libvirt-users] Undefined interfaces?
by Alex 19 Apr '11

19 Apr '11

Hi, I have a working fc14 install with a few virtual interfaces set up, and just noticed the following in messages: Apr 18 13:07:43 fc14 libvirtd: 13:07:43.155: error : interfaceGetXMLDesc:355 : internal error could not get interface XML description (netcf: NETLINK socket operation failed - couldn't find ifindex for interface `br0:0`) Apr 18 13:07:43 fc14 libvirtd: 13:07:43.165: error : interfaceGetXMLDesc:355 : internal error could not get interface XML description (netcf: NETLINK socket operation failed - couldn't find ifindex for interface `eth0:0`) Apr 18 13:07:43 fc14 libvirtd: 13:07:43.175: error : interfaceGetXMLDesc:355 : internal error could not get interface XML description (netcf: NETLINK socket operation failed - couldn't find ifindex for interface `eth1:0`) Apr 18 13:07:43 fc14 libvirtd: 13:07:43.185: error : interfaceGetXMLDesc:355 : internal error could not get interface XML description (netcf: NETLINK socket operation failed - couldn't find ifindex for interface `eth1:1`) I see several references that indicate this may be a bug. Or have I configured something wrong? I have some interfaces configured to be a bridge and others are configured as a regular network, with the guests being masqueraded. It's certainly possible I've configured something incorrectly. I'm not sure what information to provide to help troubleshoot this. Any information would be greatly appreciated. Thanks, Alex

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[libvirt-users] Accessing a MAC address from inside the VM?
by David Lane 19 Apr '11

19 Apr '11

Greetings, I have a very simple problem, but the resolution is proving rather complex. Bare with me, I will attempt to explain. I have a host machine with no GUI. I attach an existing .img file to the host machine and need to change the MAC address (since the image was created on another machine). Is there a way from with in the guest to do this or do I have muck with the XML? And if I muck with the XML and change it, how do I pass this information up to the guest, or will the guest see it automagically or do I have to write it down and then manually transfer it into the guest's ifcfg? Using the GUI, when you change the NIC, the guest generally does not see the new MAC and grouses until you change it. Thanks. DAVID

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[libvirt-users] USB2 passthrough
by Marco van Beek 18 Apr '11

18 Apr '11

Hi, I am trying to get a USB device working on a Windows 7 virtual machine, and it needs USB2 to work, so the USB passthrough does not work. I have searched for an answer and either the answer is so obvious I am being thick, or too complicated for anyone to address it. Can I simply do a PCI passthrough of a USB host controller? Would that then give me a whole load of USB2 ports I could connect to my computer? I would have to find out which port was connected to which controller, but surely it can't be that simple? Thanks, Marco -- Marco van Beek =================================================== Forget About IT Ltd. Grove Park Studios, 188-192 Sutton Court Rd, London, W4 3HR =================================================== T: 0870 757 2924 F: 0870 757 2926 M: 0788 770 3604 E: mvanbeek(a)forgetaboutit.net W: http://www.forgetaboutit.net/ =================================================== Forget About IT and FABIT are registered trademarks =================================================== Company Registered in England No. 05375739 ===================================================

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[libvirt-users] Default network / net-edit
by ssaleh＠nrln.us 18 Apr '11

18 Apr '11

How do you modify the default network parameters? The net-edit command within virsh does not seem to work as expected. TIA

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[libvirt-users] add file.img in libvirt
by Marco Mirabile 18 Apr '11

18 Apr '11

Good day I downloaded an image of a VMs "centOS.img" how can I open this image from libvirt? I ask you with virt-install, but I could not help me dominioYP

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[libvirt-users] Problems setting up bridge
by Alex 15 Apr '11

15 Apr '11

Hi, I have a fc14 box with two interfaces that I'm having some difficulty setting up a bridge properly. I have a few kvm guests set up and running, but I've switched from using NetworkManager to using standard networking with a bridge. I've modified the ifcfg-eth0 and created ifcfg-br0 as per the standard documentation, but I think I'm having routing problems. This is what the network looks like: [root@fc14 ~]# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 68.195.XXX.40 * 255.255.255.248 U 0 0 0 br0 192.168.1.0 * 255.255.255.0 U 0 0 0 eth1 192.168.125.0 * 255.255.255.0 U 0 0 0 virbr0 link-local * 255.255.0.0 U 1003 0 0 eth1 link-local * 255.255.0.0 U 1004 0 0 br0 default ool-44c3c129.st 0.0.0.0 UG 0 0 0 br0 br0 Link encap:Ethernet HWaddr 40:61:86:4E:84:09 inet addr:68.195.XXX.42 Bcast:68.195.XXX.47 Mask:255.255.255.248 inet6 addr: fe80::a0e7:ecff:fefd:340a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3883 errors:0 dropped:0 overruns:0 frame:0 TX packets:3579 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1818327 (1.7 MiB) TX bytes:590720 (576.8 KiB) eth0 Link encap:Ethernet HWaddr 40:61:86:4E:84:09 inet6 addr: fe80::4261:86ff:fe4e:8409/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3891 errors:0 dropped:0 overruns:0 frame:0 TX packets:3551 errors:0 dropped:0 overruns:0 carrier:1 collisions:0 txqueuelen:1000 RX bytes:1873169 (1.7 MiB) TX bytes:588302 (574.5 KiB) Interrupt:42 eth1 Link encap:Ethernet HWaddr 00:0E:0C:3B:36:F4 inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20e:cff:fe3b:36f4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7622 errors:0 dropped:0 overruns:0 frame:0 TX packets:6936 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1062687 (1.0 MiB) TX bytes:4304984 (4.1 MiB) virbr0 Link encap:Ethernet HWaddr E6:ED:D2:6E:58:5C inet addr:192.168.125.1 Bcast:192.168.125.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vnet0 Link encap:Ethernet HWaddr FE:54:00:67:2C:4C inet6 addr: fe80::fc54:ff:fe67:2c4c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:391 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:300 (300.0 b) TX bytes:23358 (22.8 KiB) I've left out the loopback for simplicity. The problem is that I can't reach the br0 device from a server on the eth1 device (the 192.168. network). Is this a routing issue? Should I also add the eth1 device to the bridge? If so, how would I do that? Also, can you explain under what circumstances a tun device would be used? Does that have any relation to bridging? Thanks, Alex

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[libvirt-users] Where actually is the callback triggered?
by kadir yüceer 15 Apr '11

15 Apr '11

Hi all, Quick question: When the hypervisor triggers a callback which is registered for generic events, (assuming I'm connected through qemu+tcp) where exactly is the callback triggered? On the hypervisor host or on my host? Regards Kadir

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[libvirt-users] custom iptables rules
by Kurian Thayil 15 Apr '11

15 Apr '11

Hi, Is there a way that we can add custom IP-Tables rules in a nat'd physical host? I need some custom rules mentioned in physical host to access some services in the guest systems. Any hints on this? Regards, Kurian Thayil.

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[libvirt-users] virsh shutdown
by Zvi Dubitzky 13 Apr '11

13 Apr '11

Hi For some reason recent libvirt code (0.8.3 and even before) the 'virsh shutdown <domain> ' is not effective . It issues an ok message but the domians remains in a runnning state . Only th e destroy works fine. Any idea ? thanks Zvi Dubitzky Email:dubi@il.ibm.com

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