January 2010 - virt - Fedora Mailing-Lists

by Robert Thiem

> 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

10 years, 4 months

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Fedora 12 Xen guests (domU) and hosts (dom0)

by Pasi Kärkkäinen

Hello, I thought of writing some information about running Fedora 12 Xen guests and also Fedora 12 Xen hosts/dom0. Fedora 12 includes the upstream Linux pv_ops Xen domU support in the default kernel. By using virt-install or virt-manager you can install Fedora 12 Xen PV (paravirtual) guests directly from network, for example on RHEL 5.4, CentOS 5.4, or Fedora Xen dom0/host. If you want to run Fedora 12 Xen dom0 (host), there are some extra steps needed. Fedora 12 ships with Xen hypervisor and management tools (Xen 3.4.1, and Xen 3.4.2 in the F12 updates), but the required Xen dom0 capable host kernel is not included in Fedora atm/yet. General information about Xen dom0 status in Fedora: http://fedoraproject.org/wiki/Features/XenPvopsDom0 There are a couple of different ways to get and install a Xen dom0 capable kernel to Fedora 12 host: - By using pre-packaged pv_ops xendom0 kernel rpms by M A Young. his repository: http://fedorapeople.org/~myoung/dom0/ - Compiling and installing Xen dom0 capable kernel yourself/manually. There are many options to choose from, full list of the available Xen dom0 capable kernels is here: http://wiki.xensource.com/xenwiki/XenDom0Kernels The recommended dom0 kernel is the pv_ops kernel, which is in the process of being cleaned up for upstream/mainline Linux inclusion. More information about pv_ops dom0 kernel, including the status reports: http://wiki.xensource.com/xenwiki/XenParavirtOps Xen developers are interested of both the success and failure reports when using the Xen pv_ops dom0 kernel. Tips for running Xen with Fedora 12: - Make sure you install all the latest Fedora 12 updates, since they have an updated Xen version (3.4.2), and also fix a bug in python-virtinst tool to make Xen guest console keymaps work properly: https://bugzilla.redhat.com/show_bug.cgi?id=533707 - Recent versions of Xen pv_ops dom0 kernel renamed some xen backend driver modules to have "xen-" prefix in them, for example evtchn module became xen-evtchn. Fedora Xen 3.4.2 init scripts take care of this, and load the correct modules, but Xen 3.4.1 doesn't do this automatically, causing xend fail to start in dom0/host before the modules are loaded manually. - There are some upcoming apic-related changes coming in pv_ops dom0 kernel, which will require a patch to Xen hypervisor. This patch is not yet included in the Fedora Xen rpms. The patch will be added to Fedora Xen rpms when the upstream pv_ops kernel starts to require/use it. - pv_ops dom0 kernel currently lacks blktap2 support, so using tap:aio: backend disk image files is not yet possible. Xen file: backend image files work though. At the moment it's recommended to use LVM volumes for guest disks (Xen phy: backend). - virt-manager seems to work OK on Fedora 12 Xen dom0. - If you experience problems related to Fedora 12 guests (domU) kernel crashing (especially related to save/restore/migration), install the latest Fedora updates to the guest. There has been a lot of Xen guest related fixes in the upstream Linux recently. These fixes will appear in Fedora when the kernel gets updated to include the latest stable upstream fixes. Hopefully that helps :) -- Pasi

12 years, 1 month

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F12 and ksm/ksmtuned: info required...

by Gianluca Cecchi

Hello, F12 x86_64 with Qemu/KVM booted yesterday evening. It has two guests with CentOS 5.3 x86_64 configured to auto-start and now they are running... I see this morning, some minutes ago: [root@virtfed ~]# service ksm status ksm is not running My config: [root@virtfed ~]# chkconfig --list|grep ksm ksm 0:off 1:off 2:on 3:on 4:on 5:on 6:off ksmtuned 0:off 1:off 2:on 3:on 4:on 5:on 6:off [root@virtfed ~]# cat /sys/kernel/mm/ksm/pages_shared 3786 Then I start two other guests, both with CentOS 5.4 x86_64. After a while: [root@virtfed ~]# cat /sys/kernel/mm/ksm/pages_shared 4752 [root@virtfed ~]# cat /sys/kernel/mm/ksm/pages_shared 5219 ... [root@virtfed ~]# cat /sys/kernel/mm/ksm/pages_shared 90895 and now, without any action at my side: [root@virtfed ~]# service ksm status ksm is running Is this normal/expected? Any deeper doc/link about ksm/ksmtuned logic? Is it ksmtuned that spins ksm as it is needed? Any log file to check/configure? I read https://fedoraproject.org/wiki/Features/KSM but probably I'm missing something... Thanks, Gianluca

12 years, 2 months

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Fedora virt status

by Justin Forbes

Fedora 13 ========= Feature Submission deadline for F-13 was earlier this week, we have some exciting new features submitted. As we move towards F-13, we are getting really close to the Feature Freeze deadline. F-13 schedule: 2010-02-09 Feature Freeze (12 days) 2010-02-16 Alpha Freeze (19 days) 2010-03-23 Beta (Final Development) Freeze (54 days) 2010-04-29 Compose Release Candidate (91 days) F12 Virt Preview ================ As was announced before, the virt-preview repository for F12 users wishing to test out the latest virtualization bits is available. Instructions for using this repository can be found at: https://fedoraproject.org/wiki/Virtualization_Preview_Repository Recent updates in this repository include: qemu-0.12.2-4: - Update to 0.12.2 upstream - Add virtio-console patches from upstream for the F13 VirtioSerial feature - Remove build dependency on iasl now that we have seabios Bugs ==== DOOM-O-METER: 216 bugs open 1 week ago, up to 230 now. We have a lot of work to do! = Important = == kernel == https://bugzilla.redhat.com/show_bug.cgi?id=545851 KVM/networking-related crash This is related to guests using IPV6 == kvm == https://bugzilla.redhat.com/show_bug.cgi?id=555788 SIGTRAP leakage between separate virtual machines Patches have been posted for this, and a resolution is coming soon. https://bugzilla.redhat.com/show_bug.cgi?id=478317 almost 9 thousand syscalls per second while idle This is believed to be a result of the USB Tablet device, but several users have noticed high host CPU usage while guests were idle. https://bugzilla.redhat.com/show_bug.cgi?id=544339 Segfaults logged from kvm (qemu-kvm) resulting in guest sudden crash and data loss A number of users complaining of guests crashing and sometimes taking the host with them. This appears to be related to sound emulation. https://bugzilla.redhat.com/show_bug.cgi?id=544940 reattach virtio to rhel{5,6} guests will cause qemu-kvm crash == libvirt == https://bugzilla.redhat.com/show_bug.cgi?id=547045 libvirt can generate bogus node device XML libvirt has a function for escaping XML strings that we clearly forgot to use here. In addition though we probably need to check where this garbage is coming from, because in this particular case we probably shouldn't be including the element at all.

12 years, 3 months

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is libvirtd breaking iptables in Fedora 12?

by Daniel Sanabria

Hi All, I noticed that if I turn on the libvirtd service via chkconfig it ends up breaking my iptables by adding duplicated rules. For you to have an idea here's the output of iptables-save -c after a reboot with libvirtd off: # Generated by iptables-save v1.4.5 on Mon Jan 25 19:34:39 2010 *nat :PREROUTING ACCEPT [21:7584] :POSTROUTING ACCEPT [21:1673] :OUTPUT ACCEPT [21:1673] [0:0] -A PREROUTING -d 192.168.0.6/32 -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.122.118 [0:0] -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE COMMIT # Completed on Mon Jan 25 19:34:39 2010 # Generated by iptables-save v1.4.5 on Mon Jan 25 19:34:39 2010 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [105:11066] [0:0] -A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 80 -j ACCEPT [0:0] -A INPUT -i wlan0 -p tcp -m tcp --dport 80 -j ACCEPT [41:23909] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT [0:0] -A INPUT -p icmp -j ACCEPT [2:120] -A INPUT -i lo -j ACCEPT [0:0] -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT [0:0] -A INPUT -p tcp -m tcp --dport 11201 -j ACCEPT [0:0] -A INPUT -p udp -m udp --dport 11201 -j ACCEPT [36:6884] -A INPUT -j REJECT --reject-with icmp-host-prohibited [0:0] -A FORWARD -d 192.168.122.0/24 -o virbr0 -m state --state RELATED,ESTABLISHED -j ACCEPT [0:0] -A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT [0:0] -A FORWARD -i virbr0 -o virbr0 -j ACCEPT [0:0] -A FORWARD -i wlan0 -o virbr0 -p tcp -m tcp --dport 80 -j ACCEPT [0:0] -A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable [0:0] -A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable [0:0] -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on Mon Jan 25 19:34:39 2010 and this is the output of the same command after a reboot with libvirtd on: # Generated by iptables-save v1.4.5 on Mon Jan 25 19:46:03 2010 *nat :PREROUTING ACCEPT [6:965] :POSTROUTING ACCEPT [50:3703] :OUTPUT ACCEPT [52:4038] [0:0] -A PREROUTING -d 192.168.0.6/32 -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.122.118 [1:295] -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE [1:40] -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE COMMIT # Completed on Mon Jan 25 19:46:03 2010 # Generated by iptables-save v1.4.5 on Mon Jan 25 19:46:03 2010 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [338:37036] [1:74] -A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT [1:328] -A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT [0:0] -A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT [0:0] -A INPUT -i virbr0 -p tcp -m tcp --dport 80 -j ACCEPT [0:0] -A INPUT -i wlan0 -p tcp -m tcp --dport 80 -j ACCEPT [190:99034] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT [0:0] -A INPUT -p icmp -j ACCEPT [2:120] -A INPUT -i lo -j ACCEPT [0:0] -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT [0:0] -A INPUT -p tcp -m tcp --dport 11201 -j ACCEPT [0:0] -A INPUT -p udp -m udp --dport 11201 -j ACCEPT [78:13517] -A INPUT -j REJECT --reject-with icmp-host-prohibited [0:0] -A FORWARD -d 192.168.122.0/24 -o virbr0 -m state --state RELATED,ESTABLISHED -j ACCEPT [0:0] -A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT [0:0] -A FORWARD -i virbr0 -o virbr0 -j ACCEPT [0:0] -A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable [0:0] -A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable [0:0] -A FORWARD -d 192.168.122.0/24 -o virbr0 -m state --state RELATED,ESTABLISHED -j ACCEPT [0:0] -A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT [0:0] -A FORWARD -i virbr0 -o virbr0 -j ACCEPT [0:0] -A FORWARD -i wlan0 -o virbr0 -p tcp -m tcp --dport 80 -j ACCEPT [0:0] -A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable [0:0] -A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable [0:0] -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on Mon Jan 25 19:46:03 2010 As you can see when the libvirtd daemon is up I end up with a number of duplicated entries ... this is then content of /etc/sysconfig/iptables in both cases: # Generated by iptables-save v1.4.5 on Thu Jan 21 19:54:46 2010 *nat :PREROUTING ACCEPT [24306:3491836] :POSTROUTING ACCEPT [17614:1213585] :OUTPUT ACCEPT [16779:1092505] -A PREROUTING -d 192.168.0.6/32 -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.122.118 -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE COMMIT # Completed on Thu Jan 21 19:54:46 2010 # Generated by iptables-save v1.4.5 on Thu Jan 21 19:54:46 2010 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [544711:383016639] -A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT -A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT -A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT -A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT -A INPUT -i virbr0 -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -i wlan0 -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -p tcp -m tcp --dport 11201 -j ACCEPT -A INPUT -p udp -m udp --dport 11201 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -d 192.168.122.0/24 -o virbr0 -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT -A FORWARD -i virbr0 -o virbr0 -j ACCEPT -A FORWARD -i wlan0 -o virbr0 -p tcp -m tcp --dport 80 -j ACCEPT -A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on Thu Jan 21 19:54:46 2010 Has anyone experienced this? Is there another file that libvirtd uses to manipulate iptables? Thanks in advance, Daniel

12 years, 4 months

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virt-manager needs finishing polish

by Valent Turkovic

After posting my initial blog post (http://kernelreloaded.blog385.com/index.php/archives/fedora-virtualizatio...) and through discussion in comments and also in reported bugs I saw the great potential of virt-manager on Fedora as desktop virtualization tool that could replace likes of VMWare and VirtualBox but it needed some UI and usability polish. Please take use case of installing Fedora or Ubuntu in virt-manager as benchmarks or ease of use for new users. How easy/hard is it to install Fedora/Ubuntu as virtual machines in virt-manager? Any install issues? How well do they work? Etc... I covered some of that in my previously mentioned blog post and came to some later what would make virt-manager easier to use. After looking more deeply in virt-manager it UI indeed looks a bit clunky and assumes you are familiar with the way it works, not user friendly for new users. For new users of virt-manager it would be great if somehow more emphasized in UI is done on explaining that there are these things called "storage pools" and also that there are two storage pools by default; one in /var and other in /home directory. Fedora community has educated me to put any suggestions as constructive as possible and I did that in two RFEs and hope they are seeded in fertile soil and that developers see opportunity to improve usability of virt-manager Here are two RFEs, please comment on them: https://bugzilla.redhat.com/show_bug.cgi?id=557103 https://bugzilla.redhat.com/show_bug.cgi?id=557107 Cheers! -- pratite me na twitteru - www.twitter.com/valentt http://kernelreloaded.blog385.com/ linux, blog, anime, spirituality, windsurf, wireless registered as user #367004 with the Linux Counter, http://counter.li.org. ICQ: 2125241, Skype: valent.turkovic, msn: valent.turkovic(a)hotmail.com

12 years, 4 months

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Fedora virt status

by Justin Forbes

Fedora 13 ========= As we move towards F-13, we are getting really close to the Feature Submission deadline. Planned F-13 features can be seen at http://fedoraproject.org/wiki/Category:F13_Virt_Features F-13 schedule: 2010-01-26 Feature Submission Deadline (8 days) 2010-02-09 Feature Freeze (22 days) 2010-02-16 Alpha Freeze (29 days) 2010-03-23 Beta (Final Development) Freeze (64 days) 2010-04-29 Compose Release Candidate (101 days) Feature status should be updated to reflect current progress sooner rather than later. Now that qemu-0.12 has been added for F-13 we need as much testing as possible. This can be tested by using rawhide, or for those who prefer an F-12 base, the virt-preview repository will allow you to test. F12 Virt Preview ================ As was announced before, the virt-preview repository for F12 users wishing to test out the latest virtualization bits is available. Instructions for using this repository can be found at: https://fedoraproject.org/wiki/Virtualization_Preview_Repository Recent updates in this repository include: libvirt-0.7.5-3: - Add new API virDomainMemoryStats - Public API and domain extension for CPU flags - vbox: Add support for version 3.1 - Support QEMU's virtual FAT block device driver - a lot of fixes libvirt-java-0.4.1-1: - Better null checking around Scheduled Parameters - Added error function callback qemu-0.12.1.2-3: - Point to seabios instead of bochs, and add a requires for seabios - Update to 0.12.1.2 upstream - Remove patches included in upstream seabios-0.5.1-0.1.20100108git669c991: - Initial seabios package * Required for qemu-0.12 and newer. virt-manager-0.8.2-2: - Build with actual upstream tarball (not manually built dist) virt-viewer-0.2.1-1: - Update to 0.2.1 release Bugs ==== DOOM-O-METER: 211 bugs open 4 weeks ago, up to 216 now. We have a lot of work to do! = Important = == kernel == https://bugzilla.redhat.com/show_bug.cgi?id=545851 KVM/networking-related crash This is related to guests using IPV6 == kvm == https://bugzilla.redhat.com/show_bug.cgi?id=555788 SIGTRAP leakage between separate virtual machines https://bugzilla.redhat.com/show_bug.cgi?id=546483 buffer overflow in usb-linux.c Patch included, this will require an updated 0.11 push for F-12. https://bugzilla.redhat.com/show_bug.cgi?id=478317 almost 9 thousand syscalls per second while idle This is believed to be a result of the USB Tablet device, but several users have noticed high host CPU usage while guests were idle. https://bugzilla.redhat.com/show_bug.cgi?id=544339 Segfaults logged from kvm (qemu-kvm) resulting in guest sudden crash and data loss A number of users complaining of guests crashing and sometimes taking the host with them. This appears to be related to sound emulation. https://bugzilla.redhat.com/show_bug.cgi?id=544940 reattach virtio to rhel{5,6} guests will cause qemu-kvm crash Reattaching virtio storage to a guest is causing host crashes. == libvirt == https://bugzilla.redhat.com/show_bug.cgi?id=547045 libvirt can generate bogus node device XML libvirt has a function for escaping XML strings that we clearly forgot to use here. In addition though we probably need to check where this garbage is coming from, because in this particular case we probably shouldn't be including the element at all.

12 years, 4 months

2
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is there a best clock to use?

by Tom Horsley

Is there a HOWTO anywhere of the different ways to make time of day clock work in virtual machines and different ways to influence it from the qemu side of the world? Time keeping is horrible in most of my virtual machines, and I just wonder if there are settings I can change in libvirt or kernel boot parameters I can apply in the linux guest to make things slightly less horrible? Sometimes I get the impression that the guest time is already two or three minutes off as soon as it is booted, and I can't imagine how that happens since I would assume it gets a copy of the host machine time for the emulated rtc clock in the guest. How can it already be broken at boot time?

12 years, 4 months

2
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Cloned machine has no network

by John Poelstra

I'm running virt-manager on Fedora 12. I selected the option to 'clone' a machine from the menu. The clone process worked great (mostly) and the cloned machine boots fine. On the cloned machine the network card no longer works and trying to start eth0 returns an error message about the device not being present. I gave the virtual machine a new nic, hoping that might solve the problem but I can't figure out how to configure it using command line tools. 'lspci' shows that it is present. I tried setuptools, but the changes didn't seem to take. I'm running a really bare bones guest with no X. Suggestions on how to move forward? Thanks, John

12 years, 4 months

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libvirtd fails to start after upgrading to virt-preview

by Vinu Moses

Hello After upgrading to the virt-preview repository yesterday, I am unable to get libvirtd started. /var/log/messages gives the following errors: Jan 16 14:25:26 vinu libvirtd: 14:25:26.816: error : udevSetupSystemDev:1409 : Failed to get udev device for syspath ' /sys/devices/virtual/dmi/id'#012 Jan 16 14:25:26 vinu libvirtd: 14:25:26.816: error : virStateInitialize:890 : Initialization of (null) state driver failed Jan 16 14:25:26 vinu kernel: libvirtd[4321]: segfault at 38 ip 000000000047d1df sp 00007f76f5f18840 error 4 in libvirtd[400000+a6000] Jan 16 14:25:26 vinu kernel: Process 4320(libvirtd) has RLIMIT_CORE set to 0 Jan 16 14:25:26 vinu kernel: Aborting core I'm running f12 x86_64 with all updates applied to date, with a 2.6.32.3 kernel from kernel.org. Would be grateful for any help to rectify this. Thank you in advance. --Vinu.

12 years, 4 months

1
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