August 2010 - virt - Fedora mailing-lists

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

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[PATCH] memory taken by zero qemu processes should be 0
by Dan Kenigsberg 17 Sep '10

17 Sep '10

Former code behaved badly when `pgrep qemu` was empty. Thanks to lihuang of BZ#609016 --- ksmtuned | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/ksmtuned b/ksmtuned index 205ff84..d5d1494 100644 --- a/ksmtuned +++ b/ksmtuned @@ -71,8 +71,8 @@ KSMCTL () { committed_memory () { # calculate how much memory is committed to running qemu processes local progname - progname=${1:-qemu} - ps -o vsz `pgrep $progname` | awk '{ sum += $1 }; END { print sum }' + progname=${1:-qemu-kvm} + ps -C "$progname" -o rsz | awk '{ sum += $1 }; END { print sum }' } free_memory () { -- 1.7.2.1

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FYI: Major version rebase of libvirt in F12, F13 in updates-testing
by Daniel P. Berrange 06 Sep '10

06 Sep '10

Normally our policy is to avoid any major version rebases of libvirt in released Fedora products, and only cherry-pick patches. The exception to this policy is when we have security updates which are not practical to backport. This is such a time. Thus we are updating the libvirt in in Fedora 12 from 0.7.1 to 0.8.2 and Fedora 13 from 0.7.7 to 0.8.2, both matching rawhide. In general we expect the quality of 0.8.2 to be fairly high, since 0.8.2 was primarily accumulated bug fixes resulting from RHEL6 testing of the 0.8.1 release. None the less, if you are able to, please take time to test these two updates and report any regressions[1]: https://admin.fedoraproject.org/updates/libvirt-0.8.2-1.fc12 https://admin.fedoraproject.org/updates/libvirt-0.8.2-1.fc13 Regards, Daniel [1] There is an expected regression with certain uses of qcow2 disks as per the update notes. -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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F14: XP install fails on KVM
by sean darcy 04 Sep '10

04 Sep '10

I'm trying to install XP with virt-manager-0.8.5-1.fc14.noarch. XP setup gets to the point of copying the files to the .img. Then I get a quick flash that I think says something like VNC lost connection with hypervisor. If I reboot from the disk, I get "Error loading operating system". If I reboot from the CD, it tells me the .img file is corrupt and needs to be reformatted. Then I'm back to my original problem. Is this the right list for this problem? If not, where do I go? sean

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VM Migration
by Jóhann B. Guðmundsson 30 Aug '10

30 Aug '10

Greetings. Relatively new to virtualzation so bear with me.. Do we have somewhere good document on on how to setup virtualzation environment that supports migration. I just set up 3 blade servers for testing. I installed on all of them RHEL 6 Beta and the virtualsation packages. Created ssh keys and allow the machine to connect all to each other. Created a storage pool on SAN that is shared by all the hosts and mounted under /var/lib/libvirt/images ( default storage pool ) Created a RHEL 6 Beta test VM on one of the server with virt-manager ( 0.8.4-3.fc13 ) on F13 and that VM image is present to all blades under the default storage pool. When trying to migrate that image to one of the 2 other servers with virt-manager it fails with following error on the host it's being migrated to. libvirtd: 10:11:44.682: error : qemudDomainBlockStats:9678 : Requested operation is not valid: domain is not running libvirtd: 10:11:44.684: error : qemudDomainBlockStats:9669 : Domain not found: no domain with matching uuid 'd7aae419-ed79-12cf-3597-6a0b067eef79' libvirtd: 10:11:44.686: error : qemudDomainInterfaceStats:9741 : Domain not found: no domain with matching uuid 'd7aae419-ed79-12cf-3597-6a0b067eef79' So somewhere along the line I forgot to configure and start the domain or is this a bug or compatibility issue with virt-manager-0.8.4-3.fc13 and RHEL 6 ? JBG

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[Xen-devel] Xen 4.0.1 released
by Pasi Kärkkäinen 25 Aug '10

25 Aug '10

----- Forwarded message from Keir Fraser <keir.fraser(a)eu.citrix.com> ----- From: Keir Fraser <keir.fraser(a)eu.citrix.com> To: "xen-devel(a)lists.xensource.com" <xen-devel(a)lists.xensource.com>, xen-users(a)lists.xensource.com Cc: Date: Wed, 25 Aug 2010 09:32:12 +0100 Subject: [Xen-devel] Xen 4.0.1 released Folks, RELEASE-4.0.1 has been tagged in http://xenbits.xen.org/xen-4.0-testing.hg Browsing the above URL will show the mercurial changelog contains many many bug fixes since 4.0.0. We recommend all users to upgrade. A source tarball will soon be available from http://www.xen.org/products/xen_source.html -- Keir _______________________________________________ Xen-devel mailing list Xen-devel(a)lists.xensource.com http://lists.xensource.com/xen-devel ----- End forwarded message -----

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ANNOUNCE: virt-manager 0.8.5 and virtinst 0.500.4
by Cole Robinson 24 Aug '10

24 Aug '10

I'm happy to announce two new releases: virt-manager 0.8.5: virt-manager is a desktop application for managing KVM and Xen virtual machines via libvirt. virtinst 0.500.4: virtinst is a collection of command line tools for provisioning libvirt virtual machines, including virt-install and virt-clone. The releases can be downloaded from: http://virt-manager.org/download.html The direct download links are: http://virt-manager.org/download/sources/virt-manager/virt-manager-0.8.5.ta… http://virt-manager.org/download/sources/virtinst/virtinst-0.500.4.tar.gz The virt-manager release includes: - Improved save/restore support - Option to view and change disk cache mode - Configurable VNC keygrab sequence (Michal Novotny) The virtinst release includes: - New virt-install --console option for specifying virtio console device - New virt-install --channel option for specifying guest communication channel - New virt-install --boot option. Allows setting post-install boot order, direct kernel/initrd boot, and enabling boot device menu. - New virt-install --initrd-inject option, which enables installation using a _local_ kickstart file (Colin Walters) Thanks to everyone who has contributed to this release through testing, bug reporting, submitting patches, and otherwise sending in feedback! Thanks, Cole

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exporting a vm image
by Kenneth Armstrong 22 Aug '10

22 Aug '10

What is the cleanest approach to export a vm (disk image along with associated xml file) to an external media, then re-importing that vm back into virt-manager? Some combination of virt-create with --import and virt-convert? I've got some test vm's that I made clones of, and I would like to back them up to an external source and reimport them at a later time should I need to. Thanks.

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porting a disk from lvm to file
by Gianluca Cecchi 22 Aug '10

22 Aug '10

Hello, I have a virtio disk for a vm that consists of an lvm. I would like to port this vm disk to another virtualization host that has vm disks on file, instead. Can I port this lvm vm-disk to file, for example with something like: dd if=/dev/vgname/lvname of=/directory_tree/filename and then copy "filename" to the other host and use it as a backing storage for a vm on it? Do I have perhaps to consider some heading for lvm metadata and skip anything form the dd command? Anyone already done/considered? Thanks, Gianluca

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spice vga option in virt-manager for F13 virt-preview?
by Gianluca Cecchi 19 Aug '10

19 Aug '10

Hello, being in fc13 and installing today the virt-preview repo packages, I was hoping to get qxl vga device available as option in virt-manager too. In fact I see that qemu has been updated to 0.13 version from pre-existing 0.12 in stock FC13. Correct? or if I want to test spice I have to run from command line my guests? In this case which interaction with pre-existing ones managed by virt-manager? BTW, if merge in virt-manager of virt-preview repo is planned for qxl vga, should I "simply" see the option when I try to modify hw for a previous gest (aka created in FC13 0.12 qemu) or should I have to change virtual hw in xml file for the guest or in other files? Thanks in advance, Gianluca

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virt-v2v: "Didn't find a grub entry for kernel version ..."
by Ask Bjørn Hansen 06 Aug '10

06 Aug '10

Hi everyone, I'm trying to convert a CentOS (5.5) xen virtual machine to a KVM based one. I exported the XML, copied it and the device data (LVM partitions on both boxes); adjusted the disk device path and the name of the bridge in the XML and then ran: virt-v2v -f /etc/virt-v2v.conf -i libvirtxml mongo1.xml My virt-v2v.conf is below. The command exits with "virt-v2v: Didn't find a grub entry for kernel version 2.6.18-194.8.1.el5" -- how do I fix that? The virt-v2v version is 0.4.0-1. - ask <virt-v2v> <path-root>/var/lib/virt-v2v/software</path-root> <iso-path>/var/lib/virt-v2v/transfer.iso</iso-path> <app os='centos' name='kernel' major='5' minor='5' arch='x86_64'> <path>centos/5/kernel-2.6.18-194.8.1.el5.x86_64.rpm</path> <dep>centos/5/ecryptfs-utils-75-5.el5.x86_64.rpm</dep> <dep>centos/5/lvm2-2.02.56-8.el5_5.6.x86_64.rpm</dep> <dep>centos/5/device-mapper-1.02.39-1.el5_5.2.x86_64.rpm</dep> <dep>centos/5/device-mapper-event-1.02.39-1.el5_5.2.x86_64.rpm</dep> </app>   <network type='bridge' name='xenbr1'> <network type='network' name='default'/> </network>  <network type='bridge' name='VM Network'> <network type='network' name='default'/> </network> </virt-v2v>

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Slow virtio network startup?
by Tom Horsley 05 Aug '10

05 Aug '10

I just replaced my block and network virtio drivers in my Windows XP machine with the newest ones (the old block driver would bluescreen at boot time). The new drivers seem to work, but the network takes almost a minute to get initialized. During this time if I try to do things like right click on network and bring up properties, nothing happens at all, the window with the list of interfaces doesn't even appear for about a minute, and when it does appear, it is blank - I have to right click and refresh before the network shows up. Once this finally happens, it seems to be working normally. I can tell it to repair, and it only takes a few seconds to renew the DHCP lease, so I don't think this is a DHCP problem. When I was using the older virtio drivers on the older libvirt, the network would come up right away without this mysterious delay, and other than updating the virtio drivers I haven't changed any settings. Anyone have any clues to the problem, or ideas for how I can tell what is going on?

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[OT?] Help debugging qemu-f13-host/centos-guest issue when SMP is enabled.
by Gilboa Davara 04 Aug '10

04 Aug '10

Hello all, I know that this question is beyond the scope of this ML, but maybe someone can help me. Recently I've started experiencing client hangs across the board on SMP CentOS 5.5/x86_64 clients running under a number of F13/x86_64 hosts when -smp is enabled [1]. Looking at the yum logs on both the hosts and the guest doesn't seem to point at any recent update that might have broken anything. As we use CentOS guests to test our application before pushing updates down to our RHEL servers, the lack of SMP support is very problematic. I did my best to generate an informative bug report, but I fear that lacking additional information, this bug report has little chance of getting solved within the F13 timeframe. So, how can determine if the problem is host based or guest based? (The CentOS 5.5/x86_64 guests were rock solid until ~2 weeks ago with smp=2 and up to smp=8) How can help the qemu maintainers triage this bug? - Gilboa [1] https://bugzilla.redhat.com/show_bug.cgi?id=619306

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Re: [fedora-virt] Suddenly KVM/virt-manager is failing on qcow2 images
by Scott Dowdle 02 Aug '10

02 Aug '10

Greetings, Opps, I replied back to the original within 5 minutes of it appearing on the list but I guess my reply did NOT include the fedora-virt list and only went directly to the original poster. Anyhoo... we already have a fix for it and it is listed below. - - - - - ----- Original Message ----- > Hi, today all my KVMs based on qcow2 images have failed with "not a > bootable hard disk" message. > > I am running F13 x64 fully yum updated on AMD Phenom II X4. > > All these VMs were working fine (linux,freebsd,winxp). > > When I booted a VM from an ISO image and looked at the /dev/vda - > there was a "corrupt" partition table. > > When I converted the qcow2 image to raw, and looked at the partition > table, it was fine. > > When I switched the VM to use the raw image, it booted and ran fine. > > Any known issues with recent KVM/qcow2 interfaction? > > Packages: > kernel-2.6.33.6-147.fc13.x86_64 > gpxe-roms-qemu-1.0.0-1.fc13.noarch > qemu-common-0.12.3-8.fc13.x86_64 > qemu-img-0.12.3-8.fc13.x86_64 > qemu-system-x86-0.12.3-8.fc13.x86_64 > qemu-kvm-0.12.3-8.fc13.x86_64 > > Help!? Tks. Yeah, I had the same problem and thanks goes to nirik for pointing me to the following info that fixed it for me: https://admin.fedoraproject.org/updates/libvirt-0.8.2-1.fc13 Read the notes. What I did was edit the config and turn switch probing back... and edit my VM's config and change the disk type from "raw" to "qcow2". - - - - - TYL, -- Scott Dowdle 704 Church Street Belgrade, MT 59714 (406)388-0827 [home] (406)994-3931 [work]

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Suddenly KVM/virt-manager is failing on qcow2 images
by Richard Chan 02 Aug '10

02 Aug '10

Hi, today all my KVMs based on qcow2 images have failed with "not a bootable hard disk" message. I am running F13 x64 fully yum updated on AMD Phenom II X4. All these VMs were working fine (linux,freebsd,winxp). When I booted a VM from an ISO image and looked at the /dev/vda - there was a "corrupt" partition table. When I converted the qcow2 image to raw, and looked at the partition table, it was fine. When I switched the VM to use the raw image, it booted and ran fine. Any known issues with recent KVM/qcow2 interfaction? Packages: kernel-2.6.33.6-147.fc13.x86_64 gpxe-roms-qemu-1.0.0-1.fc13.noarch qemu-common-0.12.3-8.fc13.x86_64 qemu-img-0.12.3-8.fc13.x86_64 qemu-system-x86-0.12.3-8.fc13.x86_64 qemu-kvm-0.12.3-8.fc13.x86_64 Help!? Tks.

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Hey, my Win XP machine now bluescreens
by Tom Horsley 02 Aug '10

02 Aug '10

I've had a Windows XP KVM running through several fedora upgrades and updates, and I just tried starting it for the first time since getting the libvirt-0.8.2-1.fc13.x86_64 update, and now it bluescreens. I had been running the redhat virtio disk and network drivers inside the KVM, have they gone incompatible on me? (I guess I could try switching the KVM back to IDE emulation and see if it starts working).

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Re: [fedora-virt] Fedora Virt Status
by Scott Dowdle 02 Aug '10

02 Aug '10

Greetings, ----- Original Message ----- > > I'm wondering if there will be a test repo for Fedora 13 because it > > would be nice to get SPICE going in Fedora 13 too! > > Actually there is one, which works quite well for me with F13 : > > $ cat /etc/yum.repos.d/spice-unstable.repo > [spice-unstable] > name=spice development bits for fedora $releasever > baseurl=http://kraxel.fedorapeople.org/spice/fedora$releasever > enabled=1 > gpgcheck=0 > > In particular, the "qemu-spice" package provides a new > "/usr/bin/qemu-spice" binary (since it's not fully merged with > upstream qemu, both qemu and qemu-spice can be installed side by side > this way). Hmm, thanks for the info. I gave it a try but so far I'm stumped. I've not really used qemu/kvm from the command line much and mostly use virt-manager. I read the instructions here: http://kraxel.fedorapeople.org/spice/README I got the following packages installed (from my /var/log/yum.log) Jul 16 11:37:25 Installed: celt051-0.5.1.3-2.fc13.x86_64 Jul 16 11:37:26 Installed: spice-server-0.5.2-2.fc13.x86_64 Jul 16 11:37:29 Installed: qemu-spice-0.12.50-0.git.20100708.fc13.x86_64 Jul 16 11:37:30 Installed: spice-client-0.5.2-2.fc13.x86_64 Then I ran a VM from virt-manager and did a "ps auxwww | grep kvm" to see what the full command virt-manager uses. I took that command and modified it for qemu-spice and here is what I came up with: /usr/bin/qemu-spice \ -spice port=1234,password=mypassword \ -device qxl \ -vga qxl \ -S \ -M pc \ -cpu core2duo,+x2apic \ -enable-kvm \ -m 2048 \ -smp 2,sockets=2,cores=1,threads=1 \ -name montanalinux32 \ -uuid 9cf9479c-3476-9aa5-bdd3-dccf5d8af015 \ -nodefaults \ -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/montanalinux32.monitor,server,nowait \ -mon chardev=monitor,mode=readline \ -rtc base=utc \ -boot c \ -drive file=/vm/montanalinux32.img,if=none,id=drive-virtio-disk0,boot=on,format=raw \ -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 \ -drive if=none,media=cdrom,id=drive-ide0-1-0 \ -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 \ -device virtio-net-pci,vlan=0,id=net0,mac=52:54:00:3a:0d:08,bus=pci.0,addr=0x5 \ -net tap,fd=49,vlan=0,name=hostnet0 \ -chardev pty,id=serial0 \ -device isa-serial,chardev=serial0 \ -usb \ -device usb-tablet,id=input0 \ -k en-us \ -device AC97,id=sound0,bus=pci.0,addr=0x6 That seems to start up (at least it shows in ps output) BUT when I try to connect to it with the spice client via... spicec -h localhost -p 1234 -w mypassword ...all I get is a black display in the window and it doesn't connect. Please note that I used an existing Fedora 13 KVM VM. If I understand correctly the VM needs to have the qxl driver installed in it so maybe that is why it isn't working. Or do the command line options given above inject the qxl driver into the VM magically? I'm very new to this so I have little idea what I'm doing much less what I'm doing wrong. Any help would be appreciated. Thanks, -- Scott Dowdle 704 Church Street Belgrade, MT 59714 (406)388-0827 [home] (406)994-3931 [work]

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virtio-win package?
by Tom Horsley 02 Aug '10

02 Aug '10

http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/cha… Says the recommended way to get the latest windows virtio drivers is to "yum install virtio-win", but apparently there is no such package in the fedora 13 repos. Are the repos busted, or is the documentation busted?

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Re: [fedora-virt] virtio-win package?
by Andrew Cathrow 01 Aug '10

01 Aug '10

----- "Tom Horsley" <horsley1953(a)gmail.com> wrote: > From: "Tom Horsley" <horsley1953(a)gmail.com> > To: virt(a)lists.fedoraproject.org > Sent: Sunday, August 1, 2010 5:33:52 PM GMT -05:00 US/Canada Eastern > Subject: Re: [fedora-virt] virtio-win package? > > On Sun, 01 Aug 2010 15:53:22 -0500 > Justin M. Forbes wrote: > > > The documentation is busted. We are not allowed to include virtio-win > > drivers in Fedora repositories until we can build them without Windows. > > I figured as much, but just thought I'd ask. The new drivers > do seem to work, but there doesn't appear to be any direct > way to install them so I can boot from virtio without taking > a round-about approach. Most direct approach is to install the VM with both the XP CD rom and the virtual floppy disk from here http://alt.fedoraproject.org/pub/alt/virtio-win/13/images/bin/viostor-31-03… Set the disk to be virtio and hit the key to load driver disk during install IIRC it's F6 > > What finally worked was: > > Make boot disk IDE > > Make a 2nd disk and call it virtio > > Boot XP and let the new hardware wizard ask about the > new disk. > > Point it to the CDROM with the guest drivers and let > it install the virtio disk driver. > > Now I can shutdown the XP KVM, fiddle the xml file > to change the boot disk back to virtio and remove > the 2nd dummy disk image. > > Finally I can boot from virtio (whew! :-). > _______________________________________________ > virt mailing list > virt(a)lists.fedoraproject.org > https://admin.fedoraproject.org/mailman/listinfo/virt >

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