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Libvirt: avirtualization APIand beyond
Daniel [email protected]
http://veillard.com/talks/CLKLinux!"".pd#
http://veillard.com/talks/CLKLinux2011.pdfhttp://veillard.com/talks/CLKLinux2011.pdf
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Libvirt pro$ect %oals
Web site: libvirt.org
Virtualization library: manage guest on one node
Share the application stack between hypervisors
Long term stability and compatibility o !"# and !$# "rovide
security and remote access %out o the bo&'
(&pand to management !"#s )*ode+ Storage+ *etwork,
Node
Hypervisor
GuestGuestGuest
http://libvirt.org/http://libvirt.org/
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Limit duplication o# e##orts
XenVMWare LXC KVM
VIX Xen-API Libvirt
Apps
Linux
AppsApps
Applications are costly to write and maintain !
VBox
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Pro$ect current status
Started -/+ 0 years ago● - commiters+ 1 ull time 2ed 3at
persons
● !ctive list [email protected]
● ! release every month
● -45 git commits6month+ .7.0 Support or most hypervisors
e&cept 8icrosot
Activity
Years2005 2010 2011
https://www.redhat.com/mailman/listinfo/libvir-listhttps://www.redhat.com/mailman/listinfo/libvir-list
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Architecture o# libvirt
!pplication links to the library
9he libvirt daemon talks to the hypervisor onthe node
2emote protocol is tunneled securely
Libvirt daemon
qemu-kvmqemu-kvm
Monitor or QMPlibvirt
App
R e m o t
e
p r o t o c o lAPI
API
Node
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Current set o# APIs &libvirt.h'
See the hypervisor support page or the ull list
,Domain state handling )save+ restore+migration+ core...,
-,*ode and guests resource usage )memory+network+ disk,
5,Security+ audit and credential handling
;,Domain control )deine+ create+ shutdown...,
/, 9uning )scheduler+ memory+ #6
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Current set o# APIs &continued'
/,*=8! support )placement+ topology+ cellsusage+ pinning,
0,Dynamic or cold device attach and removal
1,*etworking )virtual network+ interaces+iltering,
>,Storage handling )pools and volume,
7,Devices handling )enumeration+ attach+detach+ reset,
,!synchronous events callbacks
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(ecent )ork and *+,+
,Virtual switches ).7.;,
-,Lib&enlight and L? driver improvements
5,Airst version o 8icrosot hypervisor driver
;,Speciic support or B(mu low level access).7. C event
support,
,Aine grained !L or access control
-,$etter desktop integration
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+n the )ork and *+,+ &stora%e'
#ntegration with lock managers ).7.;,
Live snapshots ).7.0,
#mprovements on storage provisionning
Live block migration )started .7.-,
$etter L?+ i.e. beyond resource control to
eective containment
Dynamic control and tuning o the daemon
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Kernel related support
V8 improvements
● "erormances )virtual #
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Libvirt stack overvie)
libvirt
netcf cgroup devmap storage iptables ebtables
libguestfs AMQPBindings CIM virsh
Xen KVM VBox VMW LXC
Tools Desktop Mngt Cloud
Web ?
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Prospective )ork
!ccess to guest rom the !"#
● =sing matahari or virt4agent )kvm,
●
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Prospective )ork &continued'
3igher level !"#s
● Deine policies and use those or simpler!"#s
●
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+virt pro$ects
=mbrella proGect or virt and V8 related developments
● http:66www.ovirt.org6
● #n development+ initial Workshop *ov 45
●
#nrastructure+ governance rules●
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A call to the %eeks
Some thoughts on
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4atahari
!gents and !"#s running in the guest:
● "rovide services or management
● ore agent )gather ino+ network+ services,
● Aramework or adding new !"# on B8A
=sing !8B" protocol
ross platorm: Linu& and Windows
9ransport )Standard #"+ virtio4serial guests,
https:66github.com6matahari6matahari6wiki
https://github.com/matahari/matahari/wikihttps://github.com/matahari/matahari/wiki
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,eltacloud &Cloud APIs'
2(S9 web based !"# to e&isting louds
● Support or all maGor cloud providers
● (-+ 23(V48+ 2ackspace ...
●
