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[Libvir] Please check my autoconf libvirt.m4
by Richard W.M. Jones 24 May '07

24 May '07

Attached is an autoconf snippet which allows you to check that the libvirt library is installed (not necessarily development headers though) and check the version number. If any autoconf experts (hello, Mark) would like to check it makes sense, that'd be great. Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

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[Libvir] Remote patch, 2007-05-22
by Richard W.M. Jones 22 May '07

22 May '07

This is the latest version of the remote patch. http://annexia.org/tmp/libvirt-remote-20070522.patch I'd like to propose this for merging. The only differences are those described here: https://www.redhat.com/archives/libvir-list/2007-May/msg00156.html, and a bit more testing. Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

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Re: [Libvir] [RFC]OpenVZ XML def
by Richard W.M. Jones 22 May '07

22 May '07

Shuveb Hussain wrote: >> There is the same problem with the Xen libraries. Dan had to rewrite a >> lot of code concerning access to the hypervisor. > > No matter how different I think, the end result looks just like the > OpenVZ library code :-P > So, I'm trying to write code that looks different, but does the same > thing. The OpenVZ utilities are however, scripting friendly. Their > text output is consistent. How about writing a daemon for OpenVZ that > "talks" to the OpenVZ utilities, rather than trying to re-write the > utilities? Would this be a bad idea? It sounds like a very good idea. There can also be no question of infringement if done this way. > The actual libvirt can then > connect to this daemon to get the real stuff done. This is what I did > in my EasyVZ GUI tool for OpenVZ. Why is the daemon needed though? The libvirt calls can just launch the OpenVZ command line tools as necessary. We got into daemons with QEMU, and it's nothing but trouble. Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

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[Libvir] Re: [Fedora-xen] BUG at arch/x86_64/mm/../../i386/mm/hypervisor.c:185!
by Richard W.M. Jones 22 May '07

22 May '07

Naoki wrote: > On Mon, 2007-05-21 at 18:53 +0100, Richard W.M. Jones wrote: >> I've been stressing Xen all week, and found plenty of bugs but not this >> one. Can I ask a few questions about your set-up? > > Fire away.. > >> - Is this dmesg in the dom0 or the domU (guest)? > > dom0 > >> - You seem to have an x86-64 SMP kernel. Can you provide details of >> the machine (how many cores, how much RAM, etc.) > > Single chip, dual core, intel Core 2 Duo. > > Family: Pentium 4 > Manufacturer: Intel > ID: 47 0F 00 00 FF FB EB BF > Signature: Type 0, Family 15, Model 4, Stepping 7 > > >> - How many guests are you running, and of what sort. eg. What is the >> guest OS? Is it paravirt or full-virt? > > I had one inactive guest running. > dom0 is running x86_64 kernel 2.6.20-2925.8.fc7xen. > And I'm on rawhide fully updated. That's the same set-up I'm using. Do you get this problem often? Is it reproducible? Is there a particular thing that you are doing when this happens? Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

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[Libvir] [RFC]OpenVZ XML def
by Shuveb Hussain 22 May '07

22 May '07

Hi, I am adding OpenVZ support to Libvirt and work is progressing well. I'm able to list VM instances and I'm slowly trying to cover the basic API functions one by one. That brings us to the creation of OpenVZ based VMs. Just wanted to discuss the basic XML definition format so that I can get comments and improve if need be: <domain type='openvz'> <name>openvzdemo</name> <uuid>55a2441d-e012-40fe-a4f7-78e176015d40</uuid> <vpsid>101</vpsid> <template>vps.basic</template> <onboot>true</onboot> <os template='slackware-10.2-i386-minimal'/> <network> <hostname>openvzhost</hostname> <ip address='192.168.1.101' netmask='255.255.255.0' defgw='192.168.1.1' /> <nameserver>192.168.1.1</nameserver> <nameserver>202.56.250.5</nameserver> </network> </domain> Does this look OK? Regards, -- Shuveb Hussain. EasyVZ - OpenVZ management GUI: http://easyvz.sourceforge.net I blog at http://binarykarma.org Spread the Karma.

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[Libvir] [RFC] Life-cycle Management of the domain take2
by Saori Fukuta 22 May '07

22 May '07

Hi, I'm making a patch to provide a changing allocation dynamically and statically without keeping state at the library. And this is still uncompleted works, but I would like to hear your comments. Attached patch shows below: # virsh --help setmem NAME setmem - change memory allocation SYNOPSIS virsh setmem <domain> <kilobytes> [ --static | --dynamic ] DESCRIPTION Change the current memory allocation in the guest domain. OPTIONS <domain> domain name, id or uuid <kilobytes> number of kilobytes of memory --static static change --dynamic dynamic change First, I made upper interface. --- virsh.c ( attached file "add_option2virsh.patch ) - add 2 options as follows: --dynamic, --static - call new APIs: virDomainSetMaxMemory -> virDomainSetMaxMemoryScope virDomainSetMemory -> virDomainSetMemoryScope virDomainSetVcpus -> virDomainSetVcpusScope --- libvirt.c ( attached file "add_option2libvirt.patch ) - add 3 APIs: virDomainSetMaxMemoryScope virDomainSetMemoryScope virDomainSetVcpusScope and I will add lower driver as follows in the case of setmem. --- drivers ( attached file "add_option2driver.patch ) - xen_unified.c : add xenUnifiedDomainSetMemoryScope - xend_internal.c : add xenDaemonDomainSetMemoryScope - other : set NULL to domainSetMemoryScope I plan to achieve allocation dynamically and statically by such a way at xenDaemonDomainSetMemoryScope. 1. get configuration from the Xen Daemon using sexpr_get. 2. change the value when static option is specified, change the node of configuration using new API that I will make. when dynamic option is specified, change the allocation using xend_op 3. set configuration to the Xen Daemon using xend_op Why I did not use virDomainGetXMLDesc and virDomainDefineXML was some elements ware lost in current XML. For example, there is no "vncpasswd", "cpus", "localtime" in XML configuration with virDomainGetXMLDesc. So when I set the "vncpasswd" the "vncpasswd" will disappear after I define the XML configuration. How does this sound ? Thanks, Saori Fukuta.

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[Libvir] QEMU without KVM
by Steven W. Moyer 18 May '07

18 May '07

I'm working on getting QEMU running with libvirt and virt-manager and have thus far had no success. I chose QEMU because it didn't require CPU support for full-virtualization (I got a bit older CPUs). Now I'm at a stand-still trying to get it running. My libvirt is compiled with QEMU support, but I'm getting a "virConnectOpenReadOnly() failed error when it tries to connect the the hypervisor. A couple questions: 1) How do I start qemu as a service? I actually have 6 guests running. 2) How do I connect from libvirt to qemu? (either running or not). Could someone who's already been there give me a little libvirt/qemu tutorial? Thanks, smoyer -- Steven W. Moyer Principle Architect, Assurance Applications C-COR Solutions, LLC 60 Decibel Road State College, PA 16801 Office Phone: 814-231-4408 Front Desk: 814-238-2461 Cell Phone: 814-883-0391 Fax: 814-278-6540 E-mail: smoyer(a)c-cor.com AIM: StevenWMoyer ICQ: 349680381 Jabber: smoyer1(a)jabber.jcware.org MSN: smoyer64 Yahoo: smoyer64

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[Libvir] virsh - vcpuinfo cmd not working in 0.2.2
by Jan Michael 15 May '07

15 May '07

Cheers libvirt, I've tested the CLI virsh with my recent compiled version of libvirt and version 0.1.9. In Version 0.2.2 vcpuinfo provides wrong information. In version 0.1.9 only the values for VCPU and CPU are wrong. Do you have any idea why? See the test results below. Jan > xm vcpu-list Name ID VCPUs CPU State Time(s) CPU Affinity Domain-0 0 0 0 r-- 95463.9 any cpu Domain-0 0 1 - --p 55.6 any cpu stornode 6 0 1 -b- 2036.1 1 worknode 5 0 1 -b- 2073.9 1 > virsh vcpuinfo (0,5,6) in version 0.2.2 - Domain-0 VCPU: 0 CPU: 0 State: blocked CPU time: 0.0s CPU Affinity: -- - worknode virsh # vcpuinfo 5 VCPU: 0 CPU: 0 State: blocked CPU time: 4.3s CPU Affinity: -- - stornode VCPU: 0 CPU: 0 State: blocked CPU time: 4.3s CPU Affinity: -- > virsh vcpuinfo (0,5,6) in version 0.1.9 - Domain-0 VCPU: 0 CPU: 0 State: running CPU time: 95466.7s CPU Affinity: yy - worknode VCPU: 0 CPU: 1 State: blocked CPU time: 2074.2s CPU Affinity: -y - stornode VCPU: 0 CPU: 1 State: blocked CPU time: 2036.5s CPU Affinity: -y

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[Libvir] Remote patch 20070514
by Richard W.M. Jones 15 May '07

15 May '07

This is the current remote patch, against current CVS: http://annexia.org/tmp/libvirt-remote-20070514.patch and a patch against the previous patch so you can see what changed (not very much): http://annexia.org/tmp/libvirt-remote-20070505-to-20070514.patch My To-Do list at the moment: (a) Disable Nagle (https://www.redhat.com/archives/libvir-list/2007-May/msg00142.html) (b) Implement Mark's sensible client certificate checks (https://www.redhat.com/archives/libvir-list/2007-May/msg00152.html) (c) Update TLS certificate documentation to reflect (b). And I'm hoping with those done we may be able to apply this one? It would be great if others could test this. Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

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[Libvir] How libvirt handles QEMU?
by Jun Koi 14 May '07

14 May '07

Hello, I am new to libvirt, so have a question. My concern is: libvirt can manage QEMU VMs. The point is thatI QEMU doesnt not export monitor interface to outside (at least that is what I know about older version of QEMU, not sure if anything changed recently). So how can libvirt does something like: pause, resume or extract internal information about a QEMU VM? Thank you, Jun

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