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[libvirt-users] span port from cisco switch to host to guest using kvm
by nemus＠grayhatlabs.com 23 Jan '12

23 Jan '12

I am trying to get the equivalent of promisc mode to pass all received traffic to a kvm guest that is running snort. So I have a cisco switch with span port plugged into eh2 on my kvm host which is centos. I want the kvm host to forward all promisc traffic from the span port to the guest running snort of tcpdump. What would be the best way to do this?

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[libvirt-users] Kickstart file doesn't work
by Sarath P R 21 Jan '12

21 Jan '12

I am starting an instance passing xml configuration like this. Contents inside my kickstart file is this *apt-get install vim --assume-yes* . But I think kickstart is not considered while booting instance though I am able to start instance. Please help. Thanks in advance "<domain type='xen'>" + " <name>testVM-server</name>" +" <description></description>" +" <memory>524288</memory>" +" <currentMemory>524288</currentMemory>" +" <vcpu>1</vcpu>" + " <os>" * + " <type>hvm</type**>" + " <kernel>/home/x**entest/Desktop/**vmlinuz</kernel**>" + " <initrd>/home/x**entest/Desktop/**initrd</initrd>**" + " <loader>/usr/li**b/xen-4.1/boot/**hvmloader</load** er>" + " <boot dev='hd'/>" + " <cmdline>ks=http://10.30.6.3/testVM-server.cfg </cmdline>" + " </os>"* + " <on_poweroff>destroy</on_poweroff>" + " <on_reboot>destroy</on_reboot>" + " <on_crash>destroy</on_crash>" + " <devices>" + " <emulator>/usr/lib64/xen/bin/qemu-dm</emulator>" + " <disk type='file' device='disk'>" + " <driver name='tap' type='aio'/>" + " <source file='/home/xentest/Desktop/ubuntu-server.img'/>" + " <target dev='xvda'/>" + " </disk>" + " <interface type='bridge'>" + " <source bridge='br0'/>" + " <script path='/etc/xen/scripts/vif-bridge'/>" + " </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='5900' autoport='yes' keymap='en-us'/>" + " <sound model='es1370'/>" + " </devices>" + "</domain>"; -- Thank You Sarath P R | cell +91.999.502.4287

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[libvirt-users] unable to get libvirt work with libxenlight
by 杨镭 20 Jan '12

20 Jan '12

Hi all: I am having problem with libxenlight as the underlying xen drive. I compiled libvirt with configure flag: "--with-libxl". However, the output of command: ldd libvirt.so did not show a symbol link to libxenlight.so. I assume it should link to it, but I could be wrong. To verify libxenlight is working, I then stopped xend. After this, virsh -c xen:/// list can not list Domain-0 anymore. Only start xend can it display correct Domain-0 and DomU information. My libvirt version 0.9.9, Xen is 4.1.2. BTW, the xl command itself is ok after turning off xend. -- lei yang

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[libvirt-users] libvirt with sasl shadow backend
by Robyn Bachofer 20 Jan '12

20 Jan '12

Hi list, i have a problem with virt-manager authentication over tcp. I tried it with virt-manager over non-TLS "TCP (SASL/Kerberos)" auth. and the sasl mechanism "shadow". The user (tested with unprivileged user and root) is allready in the group libvirt(d) and the process is running as root. The result on host: Jan 18 21:05:31 host libvirtd: 21:05:31.620: error : remoteDispatchAuthSaslStep:3691 : sasl step failed -20 (SASL(-13): user not found: no secret in database) on client (virt-manager gui): ... ('virtConnectOpenAuth() faild') .. I have tested it with tool "testsaslauthd" and their result: e.g.: # testsaslauthd -u root -p root 0: OK "Success." When i set it manually with saslpasswd: # saslpasswd2 -a libvirt root -p it works. Although I use, in the configuration of sasl, shadow, libvirt does not use it (i think so). Host: debian6.0.3 (squeez) libvirt 0.8.3 (deb) sasl2.1.23 (deb) :-) Best regards, Robyn

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[libvirt-users] How to use "virDomainMemoryStats"? I got 0 result.
by mao weijie 19 Jan '12

19 Jan '12

I use like this; int n = virDomainMemoryStats(dom, stats, 4, 0); I want to get men used and not used. If can , I want to get all output in stats. but "n" result is always 0. 非淡泊無以明志，非寧靜無以致遠

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[libvirt-users] Should Windows NT guest use all of a CPU?
by Richard Walker 19 Jan '12

19 Jan '12

I've "ported" an old VMware VM containing Windows NT 4 SP6 into libvirt/kvm/qemu and got it running (more or less). However, the CPU graph next to the VM in virt-manager shows it starts using 100% of the allocated CPU as soon as it reaches the "OS Loader" screen, and stays there even after Windows has booted and I've logged in. (There's a dip now and then, apparently when something other than idling happens!) Windows NT Task Manager shows the CPU usage at 0%. I've tried with and without ACPI, and with different CPU settings (none/default, qemu32, pentium). No difference. Host is running Fedora 16 x86_64 with the latest updates: gpxe-roms-qemu-1.0.1-4.fc16.noarch qemu-kvm-0.15.1-3.fc16.x86_64 qemu-system-x86-0.15.1-3.fc16.x86_64 qemu-common-0.15.1-3.fc16.x86_64 qemu-img-0.15.1-3.fc16.x86_64 libvirt-0.9.6-4.fc16.x86_64 libvirt-client-0.9.6-4.fc16.x86_64 libvirt-python-0.9.6-4.fc16.x86_64 virt-manager-common-0.9.0-7.fc16.noarch virt-manager-0.9.0-7.fc16.noarch No other VM (Linux or Windows) behaves this way. I thought NT was deemed to be "well behaved" (e.g., uses HLT instruction), so I'm wondering if this is normal. ps shows (except for bits I've hidden): /usr/bin/qemu-kvm -S -M pc-0.14 -cpu qemu32 -enable-kvm -m 384 -smp 1,sockets=1,cores=1,threads=1 -name BPrjwtest -uuid <hidden> -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/BPrjwtest.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -device lsi,id=scsi0,bus=pci.0,addr=0x6 -drive file=/home/libvirt/images/BPrjwtest.img,if=none,id=drive-ide0-0-0,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive file=<hidden>,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=2 -netdev tap,fd=30,id=hostnet0 -device ne2k_pci,netdev=hostnet0,id=net0,mac=<hidden>,bus=pci.0,addr=0x4 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:3 -vga vmware -device AC97,id=sound0,bus=pci.0,addr=0x5 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3

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[libvirt-users] possible to disable but not remove hardware?
by David Mansfield 18 Jan '12

18 Jan '12

I have a situation where I frequently need to "add" and "remove" a NIC, but each time I "add" it, I need the same MAC address. I'm using virt-manager mostly, but would be willing to use "virsh" if necessary, although it doesn't seem to hotplug the same way (something else to figure out another day ;-). It doesn't appear in the domain XML format that there is any "disabled" attribute than can be used. Is that true? Is there a different usage pattern to accomplish this? Thanks, David Mansfield Cobite, INC.

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[libvirt-users] Re: Cloud Init
by Nicolas Sebrecht 18 Jan '12

18 Jan '12

[ Please, keep cc'ing the list. ] The 18/01/12, Sarath P R wrote: > I am trying to start create an instance by passing configurations in xml > file > > dom = con.domainDefineXML(xmlDesc); > �� int id = dom.create(); > > I want to provide ssh access to the newly created vm. I am trying to > provide cloud service. so i want� the creation of vm and embedding ssh > inside the vm everything happen programatically. I think you're looking for libguestfs at http://libguestfs.org/ . Another approach would be you to have root ssh access to the guest and tunning the guest configuration via ssh. -- Nicolas Sebrecht

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[libvirt-users] virt-manager 0.9.0-r2 gentoo, no starting
by Marko Weber 18 Jan '12

18 Jan '12

getting this when starting virt-manager databunka src # virt-manager Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager.py", line 383, in <module> main() File "/usr/share/virt-manager/virt-manager.py", line 285, in main raise RuntimeError(_("Unable to initialize GTK: %s") % gtk_error) RuntimeError: Kann GTK nicht initialisieren: could not open display i already remerged gtk marko

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[libvirt-users] Cloud Init
by Sarath P R 18 Jan '12

18 Jan '12

I want to start an instance using libvirt API. I want to provide ssh access for the user of the vm. Anyone know how to embed an ssh key into the instance. I came across cloud-init . but couldn't get a tutorial . Thanks in advance. -- Thank You Sarath P R | cell +91.999.502.4287

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