virt November 2011

virt@lists.fedoraproject.org

27 participants
22 discussions

Log filling with bogus(?) VLAN-related error message
by Ian Pilcher 08 May '12

08 May '12

My syslog is getting flooded with messages like this: Nov 19 15:27:16 ian libvirtd: 15:27:16.949: 2725: error : virInterfaceDefParseXML:807 : XML description for vlan interface misses the vlan element is not well formed or invalid I do have tagged VLAN interfaces on the host (br0.1, br0.4, and br0.251), but none of my VMs are using them. I am not using any libvirt-managed networks at all: [pilcher@ian ~]$ sudo virsh net-list --all Name State Autostart ----------------------------------------- default inactive no I am running libvirt-0.8.8-7.fc15.x86_64. Any ideas? Thanks! -- ======================================================================== Ian Pilcher arequipeno(a)gmail.com "If you're going to shift my paradigm ... at least buy me dinner first." ========================================================================

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Close a VM, virt-manager loses connection
by Jerry James 29 Jan '12

29 Jan '12

I'm having a problem with multiple VMs and virt-manager on a Fedora 16 x86_64 machine. When I have multiple VMs running and shut one down, frequently virt-manager loses its connection. All of my VM windows disappear, and I'm left looking at a dialog box that says (after expanding the "Details" tab): Error polling connection 'qemu:///system': Unable to read from monitor: Connection reset by peer Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/engine.py", line 440, in _tick conn.tick() File "/usr/share/virt-manager/virtManager/connection.py", line 1507, in tick vm.tick(now) File "/usr/share/virt-manager/virtManager/domain.py", line 1531, in tick info = self._backend.info() File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1411, in info if ret is None: raise libvirtError ('virDomainGetInfo() failed', dom=self) libvirtError: Unable to read from monitor: Connection reset by peer Simply reconnecting in virt-manager usually works, and then I can reopen windows for the VMs that are still running. HOWEVER, yesterday I had this happen and one of my running VMs was NOT listed. I just about panicked, thinking it had been deleted somehow. However, restarting libvirtd made it show up again. Is this a known problem? If not, what component should I file a bug against? Thanks, -- Jerry James http://www.jamezone.org/

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Re: [fedora-virt] Routing to guests
by Robert Thiem 15 Jan '12

15 Jan '12

> From: Philip Rhoades > I can ssh from/to the host/guest OK but how do I set up a route (or > whatever is necessary) so that another machine: > eth0: 192.168.0.12 > can ssh to the guest? - "ssh 192.168.122.68" gives "no route to host" - > http://docs.fedoraproject.org/virtualization-guide/f12/en-US/html/ but > the problem does not seem to be covered there. Alexander is correct in saying that bridging would allow you to do that. There are two networking discussed in the guide. The first is a NAT (network address translation), in which the guests are given "private" ip addresses and any outbound traffic appears to be coming from the host machine's IP address. This is the same as the setup on your ADSL router where the internal network machines get addresses of 192.168.x.x but the internet sees your requests as coming from the IP address of your router. There should be lots of documentation in linux firewalling guides under sections on NAT (or possibly called IP Masquerading in some). Have a look at these for information on port forwarding to reveal services inside the virtual (such as ssh). The other option is bridging. This shares the physical network interface of the host with the guest. In this case the VM acts as though it's a machine plugged into the same subnet as the host, its services are accessible like those of the host and it's as vulnerable to attack as the host. Robert

9 13

Load VMM with non-root?
by Frank Murphy 30 Nov '11

30 Nov '11

At the moment I need to enter root pw to start virt-manager. guestfs-browser, will start, but shows nothing. Unless started with "sudo guestfs-browser. How can I get both to start as my normal user, and if I do will it affect seriel-console captures? (useful for rawhide\branched) -- Regards, Frank Murphy UTF_8 Encoded Friend of fedoraproject.org

2 1

Shared swap among Guests?
by Frank Murphy 25 Nov '11

25 Nov '11

Can a single physical disk, be used as a shared swap-drive. Among virtual Guests? Guests would be Fedora\CentOS\Maybe an odd Ubuntu. If yes, how to adapt current images for such. -- Regards, Frank Murphy UTF_8 Encoded Friend of fedoraproject.org

4 3

Spice Support F16
by Christian 25 Nov '11

25 Nov '11

Hi I'm running Fedora 16 I686 on an IBM X60s Laptop. If I try to add spice to a guest changing from vnc to spice server, and the video card from cirrus to qxl adding the channels, the guest doesn't boot complaining that he qemu binary has no spicevmc support. If I remove the channels it complains that there is no spice support. Any Idea? Chris

6 19

info on virt-preview sw base for F15
by Gianluca Cecchi 24 Nov '11

24 Nov '11

Hello, one using F15 and enabling virt-preview on it right now, would be then on F16 based packages or rawhide ones? In case of the latter, is there any other repo/way to have F15 based system with F16 based packages, at least just at this time? Thanks in advance, Gianluca

2 2

java vnc viewer with qemu
by Stephen Duse-Anthony 21 Nov '11

21 Nov '11

Hi, How do I set virt-manager to be able to use the java vnc viewer? Thanks and best regards, Stephen

1 0

webcam windows 7 guest
by Christian 20 Nov '11

20 Nov '11

Dear all, I have a windows 7 guest on Fed 16 x86-64. I would like to use the integrated webcam of my laptop inside the guest, so I did the following: Add new HW USB host Device Select My Webcam I noticed that the host added an usb Hub, but no trace of the webcam. Anything I'm missing ? Regards Chris

1 0

[ANNOUNCE] libguestfs webinar TOMORROW (Friday)
by Richard W.M. Jones 18 Nov '11

18 Nov '11

I'll be holding a libguestfs live “webinar” tomorrow, Friday, 18th November 2011 at 16:00 UTC. To convert the date and time to your timezone, do: date -d '2011-11-17 16:00Z' The programme will include: - An introduction to libguestfs features. - Live demonstrations of guestfish, a Python program, inspection, and image resizing. - An overview of major new features in RHEL 6.3. - The opportunity to ask questions on any technical topic related to libguestfs. This is going to be a Webex conference. It's possible, albeit difficult, to get Webex working on Linux. You will need the Java plugin for your browser, and there are some other tips on my blog: https://rwmj.wordpress.com/2011/11/17/libguestfs-web-seminar-this-friday/ The Webex conference link, an accompanying handout, and other details will be posted to the above URL ^^ shortly before the session starts. Don't worry if you can't make it or can't get Webex to work, as it will all be recorded and placed online in an open format as soon as we can afterwards. This seminar is sponsored by Red Hat. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/

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virt November 2011