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| | [[Category:Virtualization]] <!-- do not copy into FWN issue --> |
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| {{Anchor|Virtualization}} | | {{Anchor|Virtualization}} |
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| == Virtualization == | | == Virtualization == |
| In this section, we cover discussion on the @et-mgmnt-tools-list, @fedora-xen-list, @libvirt-list and @ovirt-devel-list of Fedora virtualization technologies. | | In this section, we cover discussion of Fedora virtualization technologies on the |
| | | @fedora-virt list. |
| Contributing Writer: [[DaleBewley | Dale Bewley]]
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| === Enterprise Management Tools List ===
| | Contributing Writer: [[User:Dale | Dale Bewley]] |
| This section contains the discussion happening on the
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| [https://www.redhat.com/mailman/listinfo/et-mgmt-tools et-mgmt-tools list] | |
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| === Fedora Xen List === | | === Fedora Virtualization List === |
| This section contains the discussion happening on the | | This section contains the discussion happening on the |
| [https://www.redhat.com/mailman/listinfo/fedora-xen fedora-xen list]. | | [http://www.redhat.com/mailman/listinfo/fedora-virt fedora-virt list]. |
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| ==== Support for Fedora 10 DomU on F8 Dom0 ==== | | ==== Virt Status Report ==== |
| The changes[1] made to the {{package|kernel}} which obviated
| | [[JustinForbes|Justin Forbes]] |
| {{package|kernel-xen}} caused {{package|python-virtinst}} to fail[2] during the
| | posted<ref>http://www.redhat.com/archives/fedora-virt/2009-December/msg00056.html</ref> a Fedora virtualization status report. |
| creation of a Fedora 10 Xen guest on a Fedora 8 Xen host.
| | Justin pointed out F13 bugs<ref>http://fedoraproject.org/wiki/Virtualization_bugs</ref> now include Important and Pony classifications in addition to Blocker and Target. |
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| [[ColeRobinson|Cole Robinson]] announced[3] a test build[4] which fixes this
| | <references /> |
| problem. Readers are encouraged to test the release and provide positive karma
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| points in bodhi[5] to make the build an official update.
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| [1] http://docs.fedoraproject.org/release-notes/f10/en_US/What_Do_System_Adminstrators_Care_About.html#sn-Unified_kernel_image
| | ==== RHEL and Fedora Virtualization Feature Parity ==== |
| | Robert Day wondered how the virtualization features<ref>http://www.redhat.com/virtualization/rhev/</ref> of Red Hat Enterprise Linux 5.4 |
| | compared to Fedora 12. |
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| [2] {{bz|458164}} | | [[DanielBerrange|Daniel Berrange]] |
| | explained<ref>http://www.redhat.com/archives/fedora-virt/2009-December/msg00040.html</ref> |
| | "The KVM based virtualization in RHEL-5.4 is not nearly so far behind |
| | Fedora as you might think. The {{package|libvirt}} mgmt stack in RHEL-5.4 was |
| | rebased to be near parity with [[Releases/11|Fedora 11]], and KVM in RHEL-5.4 is |
| | also pretty close to that using what's best described as a hybrid of |
| | kvm-83 and kvm-84." |
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| [3] http://www.redhat.com/archives/fedora-xen/2008-November/msg00036.html
| | <references /> |
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| [4] http://koji.fedoraproject.org/koji/buildinfo?buildID=71125
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| [5] https://admin.fedoraproject.org/updates/F8/FEDORA-2008-10394
| | ==== ==== |
| | <references /> |
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| ==== Paravirt Ops Dom0 Feature Update ==== | | ==== ==== |
| After some prompting[1] from [[PasiKärkkäinen|Pasi Kärkkäinen]]
| | <references /> |
| the dom0 support feature page[2] was updated to better clarify where the work
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| to bring dom0 support back to Fedora is being done, and to more accurately represent the current status.
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| The patches[3] are being written by Jeremy Fitzhardinge and others at Citrix/XenSource are being submitted to the mainline <code>kernel</code>. Once accepted in the upstream <code>kernel</code>, efforts will resume within Fedora to make the changes necessary to support dom0. These efforts include[4] ensuring the hypervisor supports <code>bzImage</code> kernels.
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| [1] http://www.redhat.com/archives/fedora-xen/2008-November/msg00021.html
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| [2] http://fedoraproject.org/wiki/Features/XenPvopsDom0
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| [3] http://xenbits.xen.org/paravirt_ops/patches.hg/
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| [4] http://www.redhat.com/archives/fedora-xen/2008-November/msg00025.html
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| | |
| === Libvirt List ===
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| This section contains the discussion happening on the
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| [https://www.redhat.com/mailman/listinfo/libvir-list libvir-list].
| |
| | |
| ==== Release of libvirt 0.5.0 and 0.5.1 ====
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| [[DanielVeillard|Daniel Veillard]] announced[1][2] the releases of
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| {{package|libvirt}} 0.5.0 and 0.5.1. "This is a long expected release, with a lot of new features, as a result the small version number is increased." Tarballs and signed RPMs available upstream[3] and in Bodhi[4].
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| "As stated there is a huge amount of new features and improvement in this release, as well as a lot of bug fixes, the list is quite long". See the post[1] for the full list including the numerous documentation and bug fixes, and cleanups omitted below.
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| '''New features:'''
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| * CPU and scheduler support for LXC (Dan Smith)
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| * SDL display configuration (Daniel Berrange)
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| * domain lifecycle event support for QEmu and Xen with python bindings (Ben Guthro and Daniel Berrange)
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| * KVM/QEmu migration support (Rich Jones and Chris Lalancette)
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| * User Mode Linux driver (Daniel Berrange)
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| * API for node device enumeration using HAL and DeviceKit with python bindings (David Lively)
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| '''Improvements:'''
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| * LXC resources control and internal cgroup API (Dan Smith)
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| * virDomainCreateLinux renamed virDomainDefineXML
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| * network driver modularization (Daniel Berrange)
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| * change the way domain and net are reported in errors (Jim Meyering)
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| * partition table scan on iSCSI (Chris Lalancette)
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| * qemudDiskDeviceName to handle normal disks (Guido Gunther)
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| * qemudDomainBlockStats improvement (Guido Gunther)
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| * scsi/virtio hotplug support for KVM (Guido Gunther)
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| * USB hot addition in QEmu (Guido Gunther)
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| * logical pool and storage backend XML dump improvement (Chris Lalancette)
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| * MAC addresses prefix per driver (Daniel Berrange)
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| * OpenVZ getVersion support (Daniel Berrange)
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| * hot removal of scsi/virtio disks for KVM (Guido Gunther)
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| * test storage driver (Cole Robinson)
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| * iSCSI and disk storage driver improvement on path handling (Chris Lalancette)
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| * UUID and ID support for Xenner (Daniel Berrange)
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| * better logging when when executing commands (Cole Robinson)
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| * bridged network for OpenVZ (Daniel Berrange)
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| * OpenVZ config file params (Evgeniy Sokolov)
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| * allow to build drivers as libtool convenience libs (Daniel Berrange)
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| * fully versioned linker script for exported ABI (Daniel Berrange)
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| * Push URI probing down into drivers open (Daniel Berrange)
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| * move all stateful drivers into the daemon binary (Daniel Berrange)
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| * improve domain event with a detail field (Daniel Berrange)
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| * domain events for QEMU driver (Daniel Berrange)
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| * event unregister callback crash (David Lively)
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| * plug a few leaks (Daniel Berrange)
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| * internal APIs for handling node device XML config (David Lively)
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| * tweaks to node device implementation (Daniel Berrange)
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| * OpenVZ vCPUs values init (Evgeniy Sokolov)
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| * use xend preferably to hypervisor call to set Xen max memory (Jim Fehlig)
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| * allow remote://hostname/ URI for automatic probe of hypervisors (Daniel Berrange)
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| * fix daemon configuration regression testing (Jim Meyering )
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| * check /usr/bin/kvm for QEmu driver init (Guido Gunther)
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| * proper active vs. inactive differentiation (Guido Gunther)
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| * improve MTU setting on tap interfaces (Eduardo Habkost)
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| * increase timeout for initial QEmu monitor poll (Cole Robinson)
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| "Thanks a lot to everybody who contributed to this release, it is
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| really great to see new people providing significant patches, and the
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| amount of feedback received on the list."
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| [1] http://www.redhat.com/archives/libvir-list/2008-November/msg00387.html
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| [2] http://www.redhat.com/archives/libvir-list/2008-December/msg00148.html
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| [3] ftp://libvirt.org/libvirt/
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| [4] https://admin.fedoraproject.org/updates/libvirt
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| ==== serial console runs out of buffer and console messages soft lock the CPU ====
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| [[BryanMcLellan|Bryan McLellan]] [1]
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| [1] http://www.redhat.com/archives/libvir-list/2008-November/msg00386.html
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| [[DanielBerrange|Daniel P. Berrange]] [2]
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| [2] "This is actually a bug in QEMU. It should never block the VM when
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| the serial port buffer fills up. Unfortunately when the serial port
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| was connected to a TTY, QEMU would block on the write :-( The recent
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| KVM releases fix this, but QEMU goes years without a release so
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| it still suffers from this. I'd recommend filing a bug against QEMU
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| in your distro."
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| [2] http://www.redhat.com/archives/libvir-list/2008-November/msg00392.html
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| [3] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494831
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| | |
| ==== libvirt + xen 3.2.1 oddities ====
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| '''long thread of bugs and fixes. mine for nuggets if there is time'''
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| [1] http://www.redhat.com/archives/libvir-list/2008-November/msg00419.html
| |
| | |
| ==== Allow Automatic Driver Probe for Remote TCP Connections ====
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| Later described by the release of {{package|libvirt}} 0.5.1 as an improvement, [[DanielBerrange|Daniel P. Berrange]] posted[1] the patch to implement a more general method for connecting to remote[2] hypervisor drivers.
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| "When connecting to a local <code>libvirt</code> you can let it automatically probe
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| the hypervisor URI if you don't know it ahead of time. This doesn't
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| work with remote URIs because you need to have something to put in
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| the URI scheme before the hostname:
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| * qemu+ssh://somehost/system
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| * xen+tcp://somehost/system
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| This is then translated into the URI:
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| * qemu:///system
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| * xen:///
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| ...
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| This patch adds a 'remote' URI scheme, usable like this:
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| * remote+ssh://somehost/
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| * remote+tcp://somehost/
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| ...
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| This finally makes the Avahi[3] broadcasts useful - they only include
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| info on the hostname + data transport (SSH, TCP, TLS), not the HV
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| type. So letting us use auto-probing remotely is the missing link."
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| [1] http://www.redhat.com/archives/libvir-list/2008-November/msg00420.html
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| [2] http://libvirt.org/remote.html
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| [3] http://www.avahi.org
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| ==== Thread Safety for libvirtd Daemon and Drivers ====
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| [[DanielBerrange|Daniel P. Berrange]] posted[1] a huge series of 28 patches
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| which add "thread safety for the
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| <code>libvirtd</code>
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| daemon and drivers, and makes the daemon multi-threaded in processing
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| RPC calls. This enables multiple clients to be processed in parallel,
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| without blocking each other. It does not change the thread rules for the
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| virConnectPtr object though, so each individual client is still serialized."
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| ...
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| "This touches a huge amount of code, so I'd like to get this all merged
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| ASAP as it'll be really hard to keep it synced with ongoing changes."
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| [1] http://www.redhat.com/archives/libvir-list/2008-November/msg00453.html
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| [2] http://fedoraproject.org/wiki/FWN/Issue148#Experimental_Driver_Thread_Safety
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| | |
| ==== libvirt 0.5.0 and KVM migration ====
| |
| Mickaël Canévet
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| Mickaël Canévet
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| [1]
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| "I just installed libvirt 0.5.0 on Debian Lenny with KVM 0.72 to try KVM
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| > migration support.
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| "
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| Chris Lalancette
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| Chris Lalancette
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| [2]
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| "Yes, it is supposed to work, but yes, you need a very, very new KVM. In
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| particular, you need at least kvm-77, and it won't really work right until you
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| get to kvm-79."
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| [1] http://www.redhat.com/archives/libvir-list/2008-December/msg00025.html
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| [2] http://www.redhat.com/archives/libvir-list/2008-December/msg00027.html
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| === oVirt Devel List ===
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| This section contains the discussion happening on the
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| [https://www.redhat.com/mailman/listinfo/ovirt-devel ovirt-devel list].
| |
libvirt