On 02/15/2012 01:35 PM, Alex Jia wrote:
On 02/15/2012 12:56 PM, Jun Koi wrote:Libvirt uses dnsmasq to serve DHCP for the virtual network, IMHO, you should see the followingOn Wed, Feb 15, 2012 at 11:32 AM, Alex Jia<ajia redhat com> wrote:On 02/15/2012 10:53 AM, Jun Koi wrote:On Wed, Feb 15, 2012 at 1:01 AM, Laine Stump<laine laine org> wrote:You means you haven't a dnsmasq process is running before starting virtual network 'default', right? I want to know a cmdline argument of the dnsmasqOn 02/14/2012 11:01 AM, Jun Koi wrote:On Tue, Feb 14, 2012 at 11:47 PM, Alex Jia<ajia redhat com> wrote:Hi Jun,I assume you haven't changed libvirt default URI, it may be a issue,I want to know whether it works for you if you explicitly specify --connect qemu:///system with virt-install? I think a root reason probably is your disk image location, the log said it can't findstorage volume, if you put img.winp under the /var/lib/libvirt/images, then give a disk absolute path to virt-install, Does it work for you?ok, i change the command a bit, and it went further. here is how i did:(1) compiled everything from source, then install (make install) to myUbuntu (2) start libvirtd on commandline # libvirtd -d (3) import my KVM image to libvirt $ virt-install --connect qemu:///system -n winxp -r 800 --accelerate --vnc -v --noautoconsole --import -f /home/jun/img/img.winxp it failed, and the log is like below: .... [Tue, 14 Feb 2012 23:51:49 virt-install 3831] DEBUG (cli:326) Requesting libvirt URI qemu:///system[Tue, 14 Feb 2012 23:51:51 virt-install 3831] DEBUG (cli:328) Receivedlibvirt URI qemu:///system[Tue, 14 Feb 2012 23:51:52 virt-install 3831] DEBUG (virt-install:259)Requesting virt method 'hvm', hv type 'default'.[Tue, 14 Feb 2012 23:51:52 virt-install 3831] DEBUG (virt-install:469)Received virt method 'hvm'[Tue, 14 Feb 2012 23:51:52 virt-install 3831] DEBUG (virt-install:470)Hypervisor name is 'kvm'[Tue, 14 Feb 2012 23:51:52 virt-install 3831] ERROR (cli:439) Error innetwork device parameters: Virtual network 'default' has not been started. [Tue, 14 Feb 2012 23:51:52 virt-install 3831] DEBUG (cli:440) Traceback (most recent call last):File "/usr/local/lib/python2.6/dist-packages/virtinst/cli.py", line884, in get_networks dev = parse_network(guest, netstr, mac=mac)File "/usr/local/lib/python2.6/dist-packages/virtinst/cli.py", line1642, in parse_network bridge=opts.get("bridge")) File"/usr/local/lib/python2.6/dist-packages/virtinst/VirtualNetworkInterface.py",line 153, in __init__ self.network = network File"/usr/local/lib/python2.6/dist-packages/virtinst/XMLBuilderDomain.py",line 309, in new_setter fset(self, val, *args, **kwargs) File"/usr/local/lib/python2.6/dist-packages/virtinst/VirtualNetworkInterface.py",line 257, in set_network "started.") % newnet) ValueError: Virtual network 'default' has not been started.A very common cause of this problem is that a systemwide instance of dnsmasq is already (erroneously) listening on the bridge created bylibvirt for the default network. I took your email as an oppurtunity to write an entry in the new Troubleshooting section of the libvirt wiki.It will explain to you how to solve your problem (*if* this is your problem, of course :-).this is not my problem, as i dont use dnsmasq.process by ps -ef|grep dnsmasqbelow is my /var/log/libvirt/libvirtd.log .... 2012-02-15 01:54:18.358+0000: 10580: info : libvirt version: 0.9.10 2012-02-15 01:54:18.358+0000: 10580: error : virCommandWait:2308 : internal error Child process (/sbin/iptables --table mangle --delete POSTROUTING --out-interface virbr0 --protocol udp --destination-port 68 --jump CHECKSUM --checksum-fill) status unexpected: exit status 2 2012-02-15 01:54:18.367+0000: 10580: error : virCommandWait:2308 : internal error Child process (/sbin/iptables --table mangle --insert POSTROUTING --out-interface virbr0 --protocol udp --destination-port 68 --jump CHECKSUM --checksum-fill) status unexpected: exit status 2 2012-02-15 01:54:18.367+0000: 10580: warning : networkAddGeneralIptablesRules:1301 : Could not add rule to fixup DHCP response checksums on network 'default'. 2012-02-15 01:54:18.367+0000: 10580: warning : networkAddGeneralIptablesRules:1302 : May need to update iptables package& kernel to support CHECKSUM rule. and currently output of "brctl show" is: # brctl show bridge name bridge id STP enabled interfaces pan0 8000.000000000000 no virbr0 8000.000000000000 yesIf you manually stop virtual network 'default' and dnsmasq service then restart 'default' network, does it work for you? for instance: % virsh net-destroy default % service dnsmasq statusif your dnsmasq is still active then stop it, otherwise, please ignore thefollowing step: % service dnsmasq stopmake sure you haven't any dnsmasq process is running by ps -ef|grep dnsmasq,then active 'default' network again: % virsh net-start default if the above step is failed, please give related logs and virsh output. what's dnsmasq process with cmdline? % ps -ef|grep dnsmasq Good Luck!thanks so much, Alex. it works for me now! it turns out i uninstalled the dnsmasq, but it seems there is dependency on it (why we need dnsmasq, anyway?).
serve DHCP for the guest virtual network.
link carefully again, it's a good guide for troubleshoting your 'default' virtual network: http://wiki.libvirt.org/page/Virtual_network_%27default%27_has_not_been_startedLibvirt doesn't autodetect storage format due to potential security issue, so you need to explicitly specify 'format' to qcow2, otherwise, defaults toso i reinstalled it again, but then disable dnsmasq service. then the default virtual network works. a quesiton: i imported the existent KVM image with command: virt-install --connect qemu:///system -n winxp -r 800 --accelerate --vnc -v --noautoconsole --import -f /home/jun/img/img.winxpbut this is not really correct, as the above command doesnt do something for me:(1) it doesnt tell the image format (qcow2 in my case)raw format, for example: % virt-install --connect qemu:///system -n winxp -r 800 --accelerate--vnc -v --noautoconsole --disk /home/jun/img/img.winxp,format=qcow2 --importFor details, please see virt-install man page.There are some default value for these, please see virt-install man page carefully.(2) it doesnt setup the mouse cursor (-usb -usbdevice tablet) (3) it doesnt tell the network card model.Yes, you can, see 'Device Options' and 'Networking Configuration' section in man page.so questions are: (1) can i tell virt-install of of above info? i looked at the virt-install manual, but dont see anywhere to do that.(2) in case virt-install cannot do that, i guess i must use another tool to modify /etc/libvirt/qemu/winxp.xml to reflect my requirement. but then i tried virt-manager (0.9.1), and it doesnt even let me modify the configuration of my domain. so which tool should i use to modify available libvirt domain?If you only want to modify domain configuration, virsh edit should be enough, libvirt provides a group of users layer virsh commands, you may also use virsh commands to operate libvirt such as installation a guest. Alexthanks again! JunAlexso what is wrong with my system? thanks, Jun -- libvir-list mailing list libvir-list redhat com https://www.redhat.com/mailman/listinfo/libvir-list_______________________________________________ libvirt-users mailing list libvirt-users redhat com https://www.redhat.com/mailman/listinfo/libvirt-users