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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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|
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|
| === Enterprise Management Tools List ===
| | Contributing Writer: [[User:Dale | Dale Bewley]] |
| This section contains the discussion happening on the
| |
| [https://www.redhat.com/mailman/listinfo/et-mgmt-tools et-mgmt-tools list] | |
|
| |
|
| === 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]. |
|
| |
|
| ==== 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. |
|
| |
|
| [[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. |
|
| |
|
| [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." |
|
| |
|
| [3] http://www.redhat.com/archives/fedora-xen/2008-November/msg00036.html
| | <references /> |
|
| |
|
| [4] http://koji.fedoraproject.org/koji/buildinfo?buildID=71125
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|
| |
|
| [5] https://admin.fedoraproject.org/updates/F8/FEDORA-2008-10394
| | ==== ==== |
| | <references /> |
|
| |
|
| ==== Paravirt Ops 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.
| |
| | |
| 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
| |
| | |
| [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
| |
| | |
| === Libvirt List ===
| |
| This section contains the discussion happening on the
| |
| [https://www.redhat.com/mailman/listinfo/libvir-list libvir-list].
| |
| | |
| ==== Release of libvirt-0.5.0 ====
| |
| [[DanielVeillard|Daniel Veillard]] [1]
| |
| ''' clean and shorten this up '''
| |
| | |
| " This is a long expected release, with a lot of new features, as a
| |
| result the small version number is increased. The release was actually
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| done yesterday evening, and the tarballs and signed RPMs are at:
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| ftp://libvirt.org/libvirt/
| |
| | |
| As stated there is a huge amount of new features and improvement in this
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| release, as well as a lot of bug fixes, the list is quite long :
| |
| | |
| '''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)
| |
| | |
| '''Portability:'''
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| * RHEL build fixes
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| * VPATH build (Guido Gunther)
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| * many MinGW related cleanups and fixes (Richard Jones)
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| * compilation without libvirtd (Richard Jones)
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| * Add a Windows icon (Richard Jones)
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| * sys/poll.h portability fixes (Daniel Berrange)
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| * gnulib and mingw cleanups (Jim Meyering)
| |
| | |
| '''Documentation:'''
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| * virsh man page cleanups (Mark McLoughlin)
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| * doc for NIC model selection (Richard Jones)
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| * monitoring section
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| * link to AMQP bindings
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| * new APIs
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| * UML driver docs (Daniel Berrange)
| |
| | |
| '''Bug fixes:'''
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| * Xen interfaces ordering (Jim Fehlig)
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| * startup timeout with multiple pty (Cole Robinson)
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| * segfault if QEmu without active virtual network (Cole Robinson)
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| * qemu small leak (Eduardo Habkost)
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| * index creation for more than 26 disks (Sanjay Rao and Chris Wright)
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| * virRealloc handling of 0 (Daniel Berrange)
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| * missing pointer initialization (Chris Lalancette)
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| * bus device index bug (Guido Gunther)
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| * avoid crash in some error patch (Chris Lalancette)
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| * fix a problem in storage back-end (Chris Lalancette)
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| * minimum domain memory size check for Xen (Shigeki Sakamoto)
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| * switch off QEmu cache if device is shared (Charles Duffy)
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| * logical volume definition before scan bug (Chris Lalancette)
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| * a couple of memory leaks on QEmu vnc (Jim Meyering)
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| * lvs parsing fixes (Cole Robinson)
| |
| | |
| '''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)
| |
| * 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)
| |
| | |
| '''Cleanups:'''
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| * C99 initializers (Guido Gunther)
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| * test output (Cole Robinson)
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| * debug macro centralization (Cole Robinson)
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| * various error handling (Guido Gunther)
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| * safewrite use cleanup (Jim Meyering)
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| * centralize error reporting logic (Cole Robinson)
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| * avoid printf warnings (Daniel Berrange)
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| * use arrays instead of list for internal APIs (Daniel Berrange)
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| * remove many format string warnings Jim Meyering)
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| * avoid syntax check warnings (Chris Lalancette)
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| * improve po-check and list generation (Jim Meyering)
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| * .gitignore generation and handling (Jim Meyering)
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| * use ARRAY_CARDINALITY (Jim Meyering)
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| * gnulib updates and switch to use netdb.h (Jim Meyering)
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| * drop usage of socket_errno (Jim Meyering)
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| * remove socketcompat.h (Jim Meyering)
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| * more tests (Jim Meyering)
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| * drop virStringList (Daniel Berrange)
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| * reformatting and isolation of the error APIs (Daniel Berrange)
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| * cleanup internal.h and move internal APIs in specific headers (Daniel Berrange)
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| * move domain events helpers into domain_events.c (Daniel Berrange)
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| * cleanup the way optional modules are compiled (Daniel Berrange)
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| * add new logging module
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| * optional dlopen of drivers (Daniel Berrange)
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| * various new tests (Jim Meyering)
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| * cleanups when Xen is not configured in (Daniel Berrange)
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| * add some missing functions comments (Jim Meyering)
| |
| | |
| With the amount of new feature and code I would not be surprized if a
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| new release was needed within the next couple of weeks, still people are
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| invited to upgrade and submit reports in case of troubles.
| |
| | |
| 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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| | |
| Again, thanks to everybody,
| |
| "
| |
| | |
| [1] http://www.redhat.com/archives/libvir-list/2008-November/msg00387.html
| |
| | |
| ==== serial console runs out of buffer and console messages soft lock the CPU ====
| |
| [[BryanMcLellan|Bryan McLellan]] [1]
| |
| | |
| [1] http://www.redhat.com/archives/libvir-list/2008-November/msg00386.html
| |
| | |
| [[DanielBerrange|Daniel P. Berrange]] [2]
| |
| | |
| [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."
| |
| | |
| [2] http://www.redhat.com/archives/libvir-list/2008-November/msg00392.html
| |
| | |
| [3] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494831
| |
| | |
| ==== libvirt + xen 3.2.1 oddities ====
| |
| '''long thread of bugs and fixes. mine for nuggets if there is time'''
| |
| | |
| [1] http://www.redhat.com/archives/libvir-list/2008-November/msg00419.html
| |
| | |
| ==== Allow automatic driver probe for remote TCP connections ====
| |
| [[DanielBerrange|Daniel P. Berrange]] [1]
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| "When connecting to a local libvirt 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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| "
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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 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] https://www.redhat.com/archives/libvir-list/2008-November/msg00420.html
| |
| | |
| ==== Hide fully-virtualized network devices to domU with PV drivers ====
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| Iain Watson
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| Iain Watson [1]
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| "I have many DomU images which all have PV drivers loaded for network.
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| I want to start these DomU guests with only the PV network device
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| being visible from within the DomU.
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| "
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| '''No replies. Maybe dump'''
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| [1] https://www.redhat.com/archives/libvir-list/2008-November/msg00439.html
| |
| | |
| ==== Thread safety for libvirtd daemon and drivers ====
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| [[DanielBerrange|Daniel P. Berrange]] posted 28 patches[1]
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| "
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| The following huge series of patches adds thread safety for the libvirtd
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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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| | |
| There are two core places where we have to have synchronization in the
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| threading model this patch series introduces
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| | |
| - The libvirt daemon code
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| - A single global server lock (aka struct qemud_server)
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| - One lock per client connection (aka struct qemud_client)
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| | |
| - The driver implementations
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| - One lock per driver (aka QEMU, LXC, Test, UML, OpenVZ, Network,
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| Storage, Node Devices)
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| - One lock per primary object in a driver (virDomainObjPtr,
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| virNetworkObjPtr, virStoragePoolObjPtr, virNodeDeviceObjptr
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| instances)
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| | |
| For most cases, the big global server / driver locks are only held while
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| obtaining one of the finer grained locks. This gives a fairly good level
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| of concurrency for operations touching different objects. Once this core
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| infrastructure is merged, it will be possible to iterate on impl of
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| drivers to reduce the time locks are held - eg avoid holding a lock while
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| talking to the QEMU monitor interface.
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| | |
| To try and make it easier to spot thread locking problems this series
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| refactors alot of methods so that there is only a single return point
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| where the unlock call can be placed, rather than multiple return point
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| which increases the chances of missing an unlock call.
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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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| "
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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
| |
| | |
| === oVirt Devel List ===
| |
| This section contains the discussion happening on the
| |
| [https://www.redhat.com/mailman/listinfo/ovirt-devel ovirt-devel list].
| |
libvirt