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[libvirt-users] call for volunteer: FLOSS weekly podcast opportunity
by Eric Blake 02 Apr '12

02 Apr '12

The FLOSS weekly podcast is interested in doing an interview about libvirt development on June 6, at 9:30am Los Angeles time (UTC-7). For more information on past podcasts, see: http://twit.tv/show/floss-weekly With prodding from Justin Clift, I have volunteered to take on the task, but the show host, Randal, prefers to have two developers per show, so I'm looking for anyone else who has developed for or with libvirt, who would be interested in sharing the opportunity. You don't have to have a lot of commits under your belt, so much as having enough active interest in the project and what it enables you to do. In fact, having someone not directly tied to Red Hat as the second contact will probably provide a nicer balance to the interview. -- Eric Blake eblake(a)redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org

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[libvirt-users] libvirt-lxc Cannot SSH into container
by Shweta Shinde 02 Apr '12

02 Apr '12

Hi, I am trying to run containers on rhel 6.2 using libvirt-lxc. I want to migrate my containers from sf.net lxc to libvirt-lxc. So, I am using the same root file system for libvirt-lxc, which I used for sf.netlxc. After starting the container, and getting console for it, I can see the boot log for the container, it shows all the services started successfully. I get ping reply from the IP assigned to this container, but cannot ssh into the container. After entering the password for ssh, connection closed error comes up. I tried chroot to the root filesystem, and checked sshd service status. It shows that sshd is stopped. Also the /proc of container is empty. Am I missing out something in configuration? This is my xml file for container <domain type='lxc'> <name>test01</name> <memory>332768</memory> <os> <type>exe</type> <init>/sbin/init</init> </os> <vcpu>1</vcpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <filesystem type='mount'> <source dir='/srv/lxc/test01'/> <target dir='/'/> </filesystem> <interface type='network'> <source network='default'/> </interface> <console type='pty' /> </devices> </domain> Thanks, Shweta

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[libvirt-users] virsh - specifying openvz vm sample in domain creation xml
by Jamshaid 01 Apr '12

01 Apr '12

Hello I need to specify the "vm sample name" in domain creation xml. This is the option which is provided to vzctl wtih --config parameter, I can see that in openvz_driver.c there is below code ..... if ((vmdef->profile && *(vmdef->profile))) { ADD_ARG_LIT("--config"); ADD_ARG_LIT(vmdef->profile); } But i am not sure what to put in "domain creation xml" to avail that option ? I cant find anything about it in documentation or around google. Regards James

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[libvirt-users] Libvirt source code cannot built with libnettle.
by Chatsiri Ratana 01 Apr '12

01 Apr '12

Hello All, I try to build dependency library name is gnutls which require by libvirt, but show error us below. $./configure checking for shared library run path origin... done checking whether to use nettle... yes checking for libnettle... no configure: error: *** *** Libnettle 2.4 was not found. I specify macros are LD_LIBRARY_PATH=$LD_LIBRARY_PATH/path_of_nettle_2.4/lib and "PATH:path_of_nettle_2.4/bin/:$PATH" on ~/.bashrc . Why show an errors for requiring libnettle version 2.4? VIM command line for show data in config.log. it's show as below. 739 | #define __EXTENSIONS__ 1 740 | #define _ALL_SOURCE 1 741 | #define _DARWIN_C_SOURCE 1 742 | #define _GNU_SOURCE 1 743 | #define _POSIX_PTHREAD_SEMANTICS 1 744 | #define _TANDEM_SOURCE 1 745 | #define HAVE_FSEEKO 1 746 | #define STDC_HEADERS 1 747 | /* end confdefs.h. */ 748 | #include <nettle/ripemd160.h> 749 | int 750 | main () 751 | { 752 | ripemd160_init (0) 753 | ; 754 | return 0; 755 | } 756 configure:8887: result: no 757 configure:8913: error: 758 *** 759 *** Libnettle 2.4 was not found. Best Regards, Chatsiri Rattana. -- :-------------------------------------------------------- http://about.me/chatsiri.ratana

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[libvirt-users] vzctl 3.1 not supported in virsh ?
by Jamshaid 31 Mar '12

31 Mar '12

Hello If i use virsh with vzctl 3.1 i get below error virsh -c openvz:///system error: /Could not extract vzctl version It works ok with vzctl 3.0.x Is there any way i can use virsh with vzctl 3.1 ? ---------------------------------------------------------------- [root@test ~]# /usr/bin/virsh --version=long Virsh command line tool of libvirt 0.9.11 See web site at http://libvirt.org/ Compiled with support for: Hypervisors: QEmu/KVM UML OpenVZ VirtualBox Test Networking: Remote Daemon Network Bridging Nwfilter Storage: Dir Filesystem SCSI Multipath iSCSI LVM Miscellaneous: Secrets Debug -------------------------------------------------------- [root@test ~]# vzctl --version vzctl version 3.1 -------------------------------------------------------- Regards James /

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[libvirt-users] virsh create failed: cannot set CPU affinity on process 0
by 杨镭 30 Mar '12

30 Mar '12

Hello Everyone: We can't create vm on a physical server with 64 CPU(as reported by /proc/cpuinfo). The error message is: "cannot set CPU affinity on process 0" The following is the capabilities detected by libvirt: <arch>x86_64</arch> <model>Westmere</model> <vendor>Intel</vendor> <topology sockets='4' cores='10' threads='2'/> I wonder if libvirt uses incorrect CPU topology information to set process affinity which lead to the error above.

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[libvirt-users] Specifying the KVM binary to use with libvirt
by Alexander Lyakas 30 Mar '12

30 Mar '12

Greetings everybody, I am running stock ubuntu-natty with kernel 2.6.38-8, KVM 0.14.0 and libvirt 0.8.8. I am spawning virtual machines with libvirt. I would like to test a new KVM version built aside without installing it over existing KVM. Is there a way to tell libvirt which KVM binary to pick up? I've been searching and saw that QEMU driver looks in /usr/bin for KVM executable. Is there a way to adjust that? Thanks, Alex.

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[libvirt-users] Constantly changing USB product ID
by Jaap Winius 29 Mar '12

29 Mar '12

Hi folks, Recently I learned how to configure libvirt with USB pass-though functionality. In my case I configured my guest domain with this block of code: <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x0c93'/> <product id='0x1772'/> <address bus='1' device='4'/> </source> </hostdev> At first this worked fine, but then later the guest domain refused to start because the USB device was absent. When I checked, I found that its product ID had mysteriously changed to 1771. Later it was back at 1772. Now it appears that the USB device I am dealing with has a product ID that changes back and forth between 1771 and 1772 at random. Apparently, the Windows program running on the guest domain is designed to deal with this nonsense, but the question is, Can the guest domain be configured to deal with it? Something like <product id='0x177?'/> would be useful, but that doesn't work, nor does omitting the product tag. Any ideas would be much appreciated. Thanks, Jaap

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[libvirt-users] Problems with nwfilters/iptables
by Nicolai Stange 29 Mar '12

29 Mar '12

Hi all, I've got a problem with nwfilters/iptables. For one of my guest's interfaces, I have established the following filter: --8<---------------cut here---------------start------------->8--- <filter name='p-mgmt' chain='root'> <uuid>94fdd15b-b380-ba8c-6685-91206829adc7</uuid> <filterref filter='clean-traffic'/> <rule action='accept' direction='in' priority='500'> <tcp dstportstart='22'/> </rule> <rule action='drop' direction='inout' priority='1000'> <all/> </rule> </filter> </filter>--8<---------------cut here---------------end--------------->8--- The intent is to allow incoming ssh only. However, ssh from my host to my guest does not work. This is the relevant iptables excerpt with the filter given as above: --8<---------------cut here---------------start------------->8--- root:~# iptables -L HI-vnet5 Chain HI-vnet5 (1 references) target prot opt source destination RETURN tcp -- anywhere anywhere tcp spt:ssh state ESTABLISHED ctdir ORIGINAL DROP all -- anywhere anywhere root:~# --8<---------------cut here---------------end--------------->8--- The chain relations are: INPUT -> libvirt-host-in -> HI-vnet5. The interesting thing is: If I insert the same rule again, but with ctdir reversed, everything works just fine: --8<---------------cut here---------------start------------->8--- root:~# iptables -I HI-vnet5 1 -p tcp --sport 22 -m state --state ESTABLISHED -m conntrack --ctdir REPLY -j RETURN root:~# iptables -L HI-vnet5 Chain HI-vnet5 (1 references) target prot opt source destination RETURN tcp -- anywhere anywhere tcp spt:ssh state ESTABLISHED ctdir REPLY RETURN tcp -- anywhere anywhere tcp spt:ssh state ESTABLISHED ctdir ORIGINAL DROP all -- anywhere anywhere root:~# --8<---------------cut here---------------end--------------->8--- I am not an iptables expert, but if my guest's ssh daemon replies to my host's requests (and thus the packets are traversing my host's INPUT chain), I would guess that the direction is "REPLY" rather than "ORIGINAL". I'm really stuck with this and it would be really great if someone could clarify things to me! I'm running Ubuntu 12.04 (kernel 3.2.0-20-generic) coming with libvirt 0.9.8-2ubuntu1. Best, Nicolai

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[libvirt-users] Problem using virt-manager to create a VM remotely
by Dale Amon 28 Mar '12

28 Mar '12

Well, not that remote. I'm trying to get it working from my laptop to an ancient workstation behind me I use for testing. I appear to get the connection okay. virt-manager --connect qemu+ssh://root@<host_ip>/system I can click on the entry on the panel that comes up and see facts about the remote machine. I then tried the "Create a new virtual machine" item on the tool bar. Fine so far. I get a nice looking panel for New VM and since this is just an experiment, I call it "test". The correct Connection is showing, ie the host ip (QEMU). I accept the default "Local install media (ISO or CDROM)" and go to the next panel. I take the "Use ISO Image" and then give it the full directory path and name of the iso on the remote machine <host_ip>. I have tried leaving OS Type and version Generic; I have also tried setting them to match the iso (an 11.10 i386 server). When I attempt to go forward, it gives me an error panel, "Error Setting install media location. Checking installer location failed: Could not find media '/KdevArchive1/ubuntu-11.10-server-i386.iso' On the off chance that it was trying to mount the iso from my laptop instead of the test machine, I have also tried pointing to the path of the same iso there as well with no joy. I am finding very little documentation on the GUI mode and none of it seems to give me any indication of what is going wrong. Ideas?

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