virt August 2012

virt@lists.fedoraproject.org

8 participants
6 discussions

Headsup ABI breaking libusbredirparser update coming to F-18+ soon
by Hans de Goede 31 Aug '12

31 Aug '12

Hi All, Monday I plan to release a new usbredir version, which includes an ABI (and for qemu also API) breaking change to libusbredirparser. The reason for this is that for USB-redir live migration we are going to use guest physical addresses as packet ids, so that the packet ids stay consistent over migration. This means that we need 64 bit packet ids, which requires changing the id function parameter which all most all ubsredirparser functions have from an uint32_t to an uint64_t. At first I thought this would only impact qemu, since that directly uses libusbredirparser, where as spice-glib uses libusbredirhost, which is not changing ABI. Unfortunately spice-glib does use some libusbredirfilter* functions, which live in libusbredirparser, so it links directly to libusbredirparser. And although that part of the ABI is not changing, the soname is, so spice-gtk will need a rebuilt too. Once I've done the release on Monday, and build it for Rawhide + F-18, I'll also fire of spice-gtk rebuilds to take care of the spice-gtk dep. For qemu I have a git tree with some other USB fixes + a patch adjusting it for the API change here: http://cgit.freedesktop.org/~jwrdegoede/qemu/log/?h=usb-wip I'll bump the F18+ qemu packages to 1.2.0-rc2, add the necessary usb patches and fire of a rebuild. While add it I'm also going to add some pending spice patches, needed for the seamless migration and arbitrary resolution features. The patches in question can be found here: http://www.kraxel.org/cgit/qemu/log/?h=rebase/spice-next Regards, Hans

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Fedora 18 / Rawhide switch over to using libvirt as the back end
by Richard W.M. Jones 30 Aug '12

30 Aug '12

Just a note [possibly more of a warning] that I'm intending to switch the default backend in Fedora 18+ to libvirt this week. For more information about what this means, see: https://rwmj.wordpress.com/2012/07/23/new-in-libguestfs-use-libvirt-to-laun… Barring any bugs, the change ought to be transparent. The reasons why we're making this change in Fedora are: - Because in RHEL 7 this will be the default and we want to test it. - Improved encapsulation and security through sVirt. - Allows us to implement advanced features, especially disk hotplugging and access to remote disks. Note there's no change upstream. libvirt still isn't required. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v

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ubuntu
by Gene Czarcinski 26 Aug '12

26 Aug '12

I am a very long time Fedora user. Prior to that I ran Fedora Core and before that Red Hat Linux starting with (IIRC) 3.0.3. A friend of mine says good things about ubuntu so I thought I would give it a try ... virtually. So I downloaded the ubuntu 12.04.1 cdrom image for amd64. I defined a simple virtual to run it (general size, etc.) that I use for Fedora 17 virtuals. Boot it up to install ... it gets a graphic redish screen up and then virt-manager dies. Entries in the syslog are: ====== Aug 26 08:52:04 condor libvirtd[888]: 2012-08-26 12:52:04.355+0000: 888: warning : virKeepAliveTimer:182 : No response from client 0x2145850 after 5 keepalive messages in 30 seconds Aug 26 08:52:05 condor libvirtd[888]: 2012-08-26 12:52:05.205+0000: 888: warning : qemuMonitorJSONHandleGraphics:672 : missing auth scheme in graphics event Aug 26 08:52:05 condor libvirtd[888]: 2012-08-26 12:52:05.206+0000: 888: warning : qemuMonitorJSONHandleGraphics:672 : missing auth scheme in graphics event Aug 26 08:52:05 condor libvirtd[888]: 2012-08-26 12:52:05.207+0000: 888: warning : qemuMonitorJSONHandleGraphics:672 : missing auth scheme in graphics event Aug 26 08:52:05 condor libvirtd[888]: 2012-08-26 12:52:05.207+0000: 888: warning : qemuMonitorJSONHandleGraphics:672 : missing auth scheme in graphics event Aug 26 08:52:05 condor libvirtd[888]: 2012-08-26 12:52:05.208+0000: 888: warning : qemuMonitorJSONHandleGraphics:672 : missing auth scheme in graphics event Aug 26 08:52:05 condor libvirtd[888]: 2012-08-26 12:52:05.208+0000: 888: warning : qemuMonitorJSONHandleGraphics:672 : missing auth scheme in graphics event ====== I restarted libvertd and then started virt-manager again. The virtual systems that I had started were all still running. I shutdown/forced-off the ubuntu system and then deleted it. So much for ubuntu until I get more info. Any ideas? Gene

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switching both libvirt and netcf packages to use libnl3 instead of libnl-1.1
by Laine Stump 24 Aug '12

24 Aug '12

Both libvirt and the netcf library it links to use libnl for doing things with netlink sockets. libnl comes in a couple of different and API-incompatible flavors, namely libnl-1.1 and libnl-3. For a long time Fedora had just libnl-1.1, and libvirt only supported libnl-1.1 Awhile back Fedora gained support for using libnl-3 instead of libnl-1.1, and did so in a way that allows both libraries (both runtime and -devel) to still exist on the system at the same time, and programs can pick which one they want to use. Even more recently libvirt and netcf got patches to support building with libnl-3 rather than libnl-1.1 (preferring libnl-3 if both are available). Since development (and even bugfixes) of libnl-1.1 is basically dead, I want to switch over the F18 and later builds of libvirt to use libnl-3, but this will take careful timing (and some restrictions in the libvirt specfile) because attempting to run a libnl3-linked libvirt with a netcf.so that was linked with libnl-1.1 (or vice versa) results in a segv. Other than the basic use of a Requires: line in the libvirt specfile to make the newly-libnl3-enabled build of libvirt require a similarly-enabled build of netcf, does anyone have any recommendations on making this transition as painless as possible (and as soon as possible - I obviously want to do this before F18 is released).

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VMs are failing to DHCP
by Scott Baker 24 Aug '12

24 Aug '12

I've used virt-install to kickstart VM installs for a year or so. When I went to use it today it fails on getting DHCP from the host. I've restarted libvirtd, and dnsmasq but still have the problem. I see the install script send the DHCP request, but nothing ever hits the logs on the host. How do I troubleshoot the DHCP/dnsmasq part of libvirtd? Here is my command to start the install: export name=F17-`date +%Y-%m-%d_%H-%M` virt-install --name=$name \ --vcpus=2 \ --file=/var/lib/libvirt/images/$name.img \ --file-size=20 \ --location http://mirror.web-ster.com/fedora/releases/17/Fedora/x86_64/os/ \ --network=bridge:br1 \ --network=network:default \ --accelerate \ --os-type=linux \ --os-variant=fedora14 \ --extra-args="ks=http://www.perturb.org/ks/fedora-17.ks ksdevice=eth1" \ --ram=4096 & -- Scott Baker - Canby Telcom System Administrator - RHCE - 503.266.8253

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Fedora virt status July 2012
by Cole Robinson 14 Aug '12

14 Aug '12

Hey all, here are some Fedora virt status bits for July. Fedora 18 ========= We've started passing interesting dates for Fedora 18: July 27: Feature submission deadline August 07: Feature freeze (majority of the feature is in fedora) August 14: Alpha change deadline Septem 19: Beta change deadline October 2: Beta Release October 4: Virtualization Test Day In time for the Feature freeze next week, we will be taking a snapshot of QEMU upstream, and will eventually move to QEMU 1.2 when it is released later in the month. As the feature submission deadline has passed, here is the final virt feature list: https://fedoraproject.org/wiki/Features/Syscall_Filters https://fedoraproject.org/wiki/Features/Virt_Live_Snapshots https://fedoraproject.org/wiki/Features/Virt_Guest_Suspend_Hibernate In the last status report, I mentioned two potential features that eventually didn't make the cut: virt cpu/mem hotplug won't be fully ready for F18, and virt storage motion will not have an easy way for end users to leverage in time for F18. And to clarify, there will be many more virt features that are available in F18 than the ones documented here. These are just the bits that are going through the fedora feature process, which in a nutshell is about increased user/developer/press exposure: http://fedoraproject.org/wiki/Features/Policy Reviving QEMU PPC, Sparc ======================== The openbios package has been retired in Fedora for over a year now, since it was thought there was no way to build the package without PPC and Sparc machines in koji. So since last March we haven't been distributing qemu-system-ppc* or qemu-system-sparc* binaries, which depend on openbios. However, QEMU releases distribute prebuilt versions of openbios and several other roms that we don't have packaged for Fedora. I asked the fedora packaging list if it might be possible to get a packaging exception to distribute those prebuilt binaries: https://lists.fedoraproject.org/pipermail/packaging/2012-July/008557.html Dan Horak pointed out that we actually have workable cross compilers packaged in Fedora, which might be sufficient. In impressive fashion, Rich Jones picked up the ball and submitted package reviews for openbios and SLOF, which were quickly reviewed by Michael Scherer: https://bugzilla.redhat.com/show_bug.cgi?id=844748 https://bugzilla.redhat.com/show_bug.cgi?id=844737 There are still several other roms that will need to be packaged, and for it all to be integrated with the qemu package, but this is a large chunk of the work. Kudos to Rich, Michael, and everyone that chimed in on the packaging list! QEMU stable updates =================== There were several QEMU updates pushed recently, based off upstream maintenance branches. Rawhide got QEMU 1.1.1 which was released July 16th: http://marc.info/?l=kvm&m=134243605927652&w=2 F17 is now finally based off the qemu-kvm 1.0.1 release. While we had been carrying many of the 1.0.1 patches since January, the actual 1.0.1 release from March contained several more bugfixes: https://admin.fedoraproject.org/updates/qemu-1.0.1-1.fc17 F16 pulled the latest patches from the QEMU 0.15 stable branch (every patch since 0.15.1 was tagged): http://git.qemu.org/?p=qemu-stable-0.15.git;a=shortlog https://admin.fedoraproject.org/updates/qemu-0.15.1-7.fc16 virtio-win drivers updated ========================== There's a new ISO containing the last virtio drivers for Windows guests: http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/bin/ Let the list know if you hit any issues with them! Bug stats ========= Bug count on Jul 10 2012: 184 Bug count on Aug 02 2012: 208 Decent increase, but many of these will be closed when the virt-manager and qemu updates are pushed to stable. We've also got 9 sitting in POST waiting for an update, mostly libvirt. By release: * Fedora 16 : 81 * Fedora 17 : 96 * Fedora rawhide : 31 By package: * gnome-boxes : 9 * gtk-vnc : 3 * ipxe : 1 * libguestfs : 6 * libosinfo : 1 * libvirt : 44 * libvirt-cim : 3 * libvirt-sandbox : 3 * netcf : 4 * python-virtinst : 4 * qemu : 65 * spice-gtk : 5 * spice-vdagent : 1 * usbredir : 1 * virt-dmesg : 1 * virt-manager : 18 * virt-v2v : 3 * virt-viewer : 6 * virt-what : 2 * xen : 15 * xorg-x11-drv-cirrus: 2 * xorg-x11-drv-qxl : 11 Bugs of note ============ * https://bugzilla.redhat.com/show_bug.cgi?id=714271 libvirt pinned to single CPU after suspend/resume cycle -> all VMs running on the same single core Fixed builds are in updates-testing, so should be hitting stable soon! * https://bugzilla.redhat.com/show_bug.cgi?id=840444 QEMU wasn't correctly offering KVM support. This regressed with the 1.1 rawhide update, but Rich Jones and Dan Berrange combined to get this fixed right quick! rawhide and virt-preview should have fixed packages now. * https://bugzilla.redhat.com/show_bug.cgi?id=840240 virt-manager w/ vnc can get into a bad state where virt-manager is no longer visible but still taking keystrokes, meaning you can't interact with other windows. Regression caused by 0.9.2, fixed with current update in updates-testing. Thanks, Cole

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virt August 2012