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RE: [libvirt] Using Xen config files
by Matthew Donovan 22 Aug '08

22 Aug '08

I'm still having problems with this. I've dug around and found errors in the qemu-dm log. When I try to start the VM with libvirt, the error I'm getting is: "xs_read(/vm/414e73de-cf1e-487c-87e0-d4ebf7a23576/rtc/timeoffset): read error" I did a xenstore-ls on the /vm/414e73de-cf1e-487c-87e0-d4ebf7a23576 directory and sure enough, rtc/timeoffset is not there. When I start the VM with the Xen config file I used to generate the XML the rtc/timeoffset is there (timeoffset is set to "0"). Is there a way to set that in the XML? I didn't see it in the online XML description. I'm using a slightly different XML description than I had originally so I've included here (along with the Xen Config file) Thanks! -matthew const char* foo = "<domain type='xen'>" "<name>LinuxVM</name>" "<uuid>414e73de-cf1e-487c-87e0-d4ebf7a23576</uuid>" "<os>" "<type>hvm</type>" "<loader>/usr/lib/xen/boot/hvmloader</loader>" "<boot dev='hd'/>" "</os>" "<memory>512000</memory>" "<vcpu>1</vcpu>" "<on_shutdown>shutdown</on_shutdown>" "<on_reboot>restart</on_reboot>" "<on_crash>restart</on_crash>" "<features>" "<pae/>" "<acpi/>" "<apic/>" "</features>" "<clock sync='localtime'/>" "<devices>" "<emulator>/usr/lib/xen/bin/qemu-dm</emulator>" "<disk type='block'>" "<source dev='/dev/vgvms/LinuxVM'/>" "<target dev='hda'/>" "</disk>" "<interface type='ioemu'>" "<mac address='7A:AB:D0:01:82:98'/>" "</interface>" "<input type='tablet' bus='usb'/>" "<graphics type='sdl' password=''/>" "<serial type='pty'/>" "</devices>" "</domain>"; //serial = "pty" int main (int argc, char** argv) { virConnectPtr con; /* connection to the Xen hypervisor */ virDomainPtr domain; virInitialize(); con = virConnectOpen ("xen:///"); if (!con) { virErrorPtr err = virGetLastError (); printf ("virConnectOpen failed: %s\n", err->message); return -1; } domain = virDomainDefineXML (con, foo); if (!domain) { virErrorPtr err = virConnGetLastError (con); printf ("virDomainDefineXML failed: %s\n", err->message); } else { if (virDomainCreate (domain) < 0) { virErrorPtr err = virConnGetLastError (con); printf ("virDomainCreate failed: %s\n", err->message); } else { virDomainInfo info = {0}; virDomainGetInfo (domain, &info); printf ("state = %d\n", info.state); getchar (); } } virConnectClose (con); return 0; } # Automatically generated xen config file name = "LinuxVM" builder = "hvm" memory = "500" disk = [ 'phy:/dev/vgvms/LinuxVM,hda,w', ] vif = [ 'type=ioemu, mac=7A:AB:D0:01:82:98', ] uuid = "414e73de-cf1e-487c-87e0-d4ebf7a23576" device_model = "/usr/lib/xen/bin/qemu-dm" kernel = "/usr/lib/xen/boot/hvmloader" vnc=1 vnc=0 sdl=1 stdvga=0 boot="cda" usbdevice="tablet" vncunused=1 apic=1 acpi=1 pae=1 vcpus=1 serial = "pty" on_reboot = 'restart' on_crash = 'restart' > -----Original Message----- > From: Daniel P. Berrange [mailto:berrange@redhat.com] > Sent: Wednesday, August 20, 2008 1:05 PM > To: Richard W.M. Jones > Cc: Matthew Donovan; libvir-list(a)redhat.com > Subject: Re: [libvirt] Using Xen config files > > On Wed, Aug 20, 2008 at 04:44:04PM +0100, Richard W.M. Jones wrote: > > On Wed, Aug 20, 2008 at 11:35:17AM -0400, Matthew Donovan wrote: > > > > It certainly looks OK, and it seems like the domain should run after > > virDomainCreate. Have you tried adding a delay of 30 > seconds just to > > check if the domain is starting up slowly? > > Yep, that debug suggests the libvirt part of creation has > completed OK. > I think if anything is going wrong, its going to be in XenD's > arena. I'd > recommend looking in /var/log/xen for any further hints of trouble > > Daniel > -- > |: Red Hat, Engineering, London -o- > http://people.redhat.com/berrange/ :| > |: http://libvirt.org -o- http://virt-manager.org -o- > http://ovirt.org :| > |: http://autobuild.org -o- > http://search.cpan.org/~danberr/ :| > |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF > F742 7D3B 9505 :| >

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Re: [libvirt] Libvirt Xen daemon interaction in Red Hat Enterprise with virtualization
by vaibhav chugh 21 Aug '08

21 Aug '08

Thanks a lot for the reply. I checked the setting in my config file and they look correct as specified by the webpage. I am able to connect to the unix socket but my login to xend is failing. What I am looking for is the exact function call that is made by libvirt to connect to xen daemon. i.e. the function that makes libvirt send out xml RPC message for xend to read. session.login_with_password() is not supported by xenAPI version being used in Red Hat. Please help me with the substitute of this method in Red Hat. Thanks Vaibhav > > > > On Wed, Aug 20, 2008 at 10:18 AM, Daniel P. Berrange <berrange(a)redhat.com>wrote: > >> On Wed, Aug 20, 2008 at 10:15:49AM -0700, vaibhav chugh wrote: >> > Hi, >> > >> > I am new to libvirt and I am trying to figure out that how libvert >> connects >> > to Xend in Red Hat Enterprise with virtualization. I read a few posts >> but >> > was not able to find this out. >> > >> > The eariler versions of Xen were using xen_session_login_with_password() >> > function call to connect to Xen daemon but I am not able to find >> anything >> > similar to this in libvirt. >> >> Libvirt talks to XenD using its UNIX socket, and SEXPR interface. This >> page gives a quick list of config settings you need in XenD to make it >> work with libvirt: >> >> http://libvirt.org/drvxen.html >> >> Daniel >> -- >> |: Red Hat, Engineering, London -o- >> http://people.redhat.com/berrange/ :| >> |: http://libvirt.org -o- http://virt-manager.org -o- >> http://ovirt.org :| >> |: http://autobuild.org -o- >> http://search.cpan.org/~danberr/ <http://search.cpan.org/%7Edanberr/> :| >> |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 >> :| >> > > > > -- > Vaibhav Chugh >

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[libvirt] Bug: Libvirt java : Connect domainDefineXML shows no effect, listDefinedDomains throws exception
by Thomas Fricke 21 Aug '08

21 Aug '08

Hi everybody in the libvirt java binding the the Connect method domainDefineXML() seems to have no effect. Implementing a full lifecycle junit test for the virtual machine this method does not have any result. Perhaps related: listDefinedDomains shows empty result If at least one domain is running, listDomains show correctly the virtual machine. Anybody going to fix this? Cheers, Thomas

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[libvirt] PATCH: Add libvirt_lxc to specfile
by Daniel P. Berrange 21 Aug '08

21 Aug '08

FYI, just committed this change to fix the broken build last night Daniel Index: libvirt.spec.in =================================================================== RCS file: /data/cvs/libvirt/libvirt.spec.in,v retrieving revision 1.90 diff -u -p -r1.90 libvirt.spec.in --- libvirt.spec.in 20 Aug 2008 13:16:29 -0000 1.90 +++ libvirt.spec.in 21 Aug 2008 08:50:24 -0000 @@ -3,6 +3,8 @@ %define with_xen 1 %define with_xen_proxy 1 %define with_qemu 1 +%define with_openvz 1 +%define with_lxc 1 %define with_polkit 0 # Xen is available only on i386 x86_64 ia64 @@ -152,8 +154,18 @@ of recent versions of Linux (and other O %define _without_qemu --without-qemu %endif +%if ! %{with_openvz} +%define _without_openvz --without-openvz +%endif + +%if ! %{with_lxc} +%define _without_lxc --without-lxc +%endif + %configure %{?_without_xen} \ %{?_without_qemu} \ + %{?_without_openvz} \ + %{?_without_lxc} \ --with-init-script=redhat \ --with-qemud-pid-file=%{_localstatedir}/run/libvirt_qemud.pid \ --with-remote-file=%{_localstatedir}/run/libvirtd.pid @@ -248,6 +260,9 @@ fi %attr(4755, root, root) %{_libexecdir}/libvirt_proxy %endif %attr(0755, root, root) %{_libexecdir}/libvirt_parthelper +%if %{with_openvz} +%attr(0755, root, root) %{_libexecdir}/libvirt_lxc +%endif %attr(0755, root, root) %{_sbindir}/libvirtd %doc docs/*.rng %doc docs/*.xml -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] virsh/virt-install for dummies
by Jun Koi 21 Aug '08

21 Aug '08

Hi, I am frustrated searching for a quick-start documentation for virsh, just to no avail. Any help is greatly appreciated! Here is what I did: - Compile and install libvirt, virt-manager, virt-install and virt-viewer from source code. This is done (on Ubuntu 8.04). - Now I want to do install a new VM with QEMU or KVM. I got the below error with virt-install: # virt-install -c qemu:///system --name jeos2 --ram 500 --file img.jeos2 --cdrom jeos-8.04.1-jeos-i386.iso Fri, 15 Aug 2008 19:19:10 ERROR virConnectOpen() failed Traceback (most recent call last): File "/usr/bin/virt-install", line 496, in <module> main() File "/usr/bin/virt-install", line 345, in main conn = cli.getConnection(options.connect) File "/usr/lib/python2.5/site-packages/virtinst/cli.py", line 92, in getConnection return libvirt.open(connect) File "/usr/lib/python2.5/site-packages/libvirt.py", line 139, in open if ret is None:raise libvirtError('virConnectOpen() failed') libvirtError: virConnectOpen() failed How to fix this? Perhaps I need to run libvirtd before using virsh??? What frustrates me is that there seems no documentation about this process at libvirt.org at all (?). Final question: I have an old QEMU image. How to "import" it to virsh script? Is there any easy way to do that? Thanks, Jun

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[libvirt] Libvirt Xen daemon interaction in Red Hat Enterprise with virtualization
by vaibhav chugh 20 Aug '08

20 Aug '08

Hi, I am new to libvirt and I am trying to figure out that how libvert connects to Xend in Red Hat Enterprise with virtualization. I read a few posts but was not able to find this out. The eariler versions of Xen were using xen_session_login_with_password() function call to connect to Xen daemon but I am not able to find anything similar to this in libvirt. Please help me with the functions or the area of source code which are being used by libvirt to make the connections. Thanks Vaibhav

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RE: [libvirt] Using Xen config files
by Matthew Donovan 20 Aug '08

20 Aug '08

Thanks for the quick reply! I set the LIBVIRT_DEBUG flag to 1 and ran it again. (The output is below.) One other thing I can think to mention is that I'm using version 0.4.4-2, installed with yum. Maybe I should try compiling and installing from source? Thanks again! -matthew [root@grape ~]$ gcc -g virt_test.c -lvirt && ./a.out DEBUG: libvirt.c: virInitialize (register drivers) DEBUG: xen_internal.c: xenHypervisorInit (Using new hypervisor call: 30001 ) DEBUG: xen_internal.c: xenHypervisorInit (Using hypervisor call v2, sys ver3 dom ver5 ) DEBUG: libvirt.c: virConnectOpen (name=xen:///) DEBUG: libvirt.c: do_open (name "xen:///" to URI components: scheme xen opaque (null) authority (null) server (null) user (null) port 0 path / ) DEBUG: libvirt.c: do_open (trying driver 0 (Test) ...) DEBUG: libvirt.c: do_open (driver 0 Test returned DECLINED) DEBUG: libvirt.c: do_open (trying driver 1 (QEMU) ...) DEBUG: libvirt.c: do_open (driver 1 QEMU returned DECLINED) DEBUG: libvirt.c: do_open (trying driver 2 (Xen) ...) DEBUG: xen_unified.c: xenUnifiedOpen (Trying hypervisor sub-driver) DEBUG: xen_unified.c: xenUnifiedOpen (Activated hypervisor sub-driver) DEBUG: xen_unified.c: xenUnifiedOpen (Trying XenD sub-driver) DEBUG: xen_unified.c: xenUnifiedOpen (Activated XenD sub-driver) DEBUG: xen_unified.c: xenUnifiedOpen (Trying XS sub-driver) DEBUG: xen_unified.c: xenUnifiedOpen (Activated XS sub-driver) DEBUG: libvirt.c: do_open (driver 2 Xen returned SUCCESS) DEBUG: libvirt.c: do_open (network driver 0 Test returned DECLINED) DEBUG: libvirt.c: do_open (network driver 1 QEMU returned DECLINED) DEBUG: remote_internal.c: doRemoteOpen (proceeding with name = xen:///) DEBUG: libvirt.c: do_open (network driver 2 remote returned SUCCESS) DEBUG: libvirt.c: do_open (storage driver 0 Test returned DECLINED) DEBUG: libvirt.c: do_open (storage driver 1 storage returned DECLINED) DEBUG: libvirt.c: do_open (storage driver 2 remote returned SUCCESS) DEBUG: libvirt.c: virDomainDefineXML (conn=0x96fe478, xml=<domain type='xen'><name>fc8.conf</name><os><type>hvm</type><loader>/usr/lib/xen/boo t/hvmloader</loader><boot dev='hd'/></os><memory>1024</memory><vcpu>1</vcpu><on_poweroff>destroy</on_p oweroff><on_reboot>restart</on_reboot><on_crash>restart</on_crash><features> <pae/><acpi/><apic/></features><clock sync="localtime"/><devices><emulator>/usr/lib/xen/bin/qemu-dm</emulator><int erface type='bridge'><source bridge='xenbr0'/><script path='vif-bridge'/></interface><disk type='block'><source dev='/dev/vgvms/fc8'/><target dev='hda'/></disk><disk type='block' device='cdrom'><source dev='/dev/cdrom'/><target dev='hdc'/><readonly/></disk><graphics type='vnc'/></devices></domain>) DEBUG: libvirt.c: virDomainLookupByName (conn=0x96fe478, name=fc8.conf) DEBUG: hash.c: __virGetDomain (New hash entry 0x9702a18) DEBUG: libvirt.c: virDomainCreate (domain=0x9702a18) DEBUG: libvirt.c: virDomainGetInfo (domain=0x9702a18, info=0xbfa2b658) state = 0 DEBUG: libvirt.c: virConnectClose (conn=0x96fe478) DEBUG: hash.c: virUnrefConnect (unref connection 0x96fe478 xen:/// 2) > -----Original Message----- > From: Richard W.M. Jones [mailto:rjones@redhat.com] > Sent: Wednesday, August 20, 2008 9:49 AM > To: Matthew Donovan > Cc: libvir-list(a)redhat.com > Subject: Re: [libvirt] Using Xen config files > > On Wed, Aug 20, 2008 at 08:35:46AM -0400, Matthew Donovan wrote: > > I am trying to programmatically start Xen guest VMs (HVM) > with libvirt (on > > Fedora Core 8) and I'm having some trouble with it. I've > included my code > > below. Essentially, the domain seems to get created > correctly but it > > doesn't seem to run. > > > > I don't receive any error messages from the libvirt > > functions but the VM does not get any CPU time (as shown > with "xm list"). > > > > [root@grape ~]$ xm list > > Name ID Mem VCPUs > State > > Time(s) > > Domain-0 0 1462 2 > r----- > > 1313.5 > > fc8.conf 7 128 1 > ------ > > 0.0 > > > > Can someone explain what I'm doing wrong here? I've tried > to get this > > working with linux and windows guests with the same results. > > That's really strange. Your program looks correct to me (but see my > comment about error handling below). One thing you can do is to run > your program after first setting the environment variable > LIBVIRT_DEBUG=1 which will cause all calls to libvirt to be printed > out. Just to make sure you are actually calling the functions that > you think you are calling. > > > I've seen references on this mailing list to libvirt's > ability to handle Xen > > configuration files but I haven't seen anything in the API > documentation or > > public header files that refer to it. Is there a public > interface to > > specifying a configuration file? > > No there isn't. This ability refers to old versions of Xen which used > /etc/xen. We have a driver that can parse files from here and present > those as inactive ("defined" but not running) domains, eg. when you > do "virsh list". > > For all other uses, use the libvirt XML configuration format. The > advantage is that it will keep working with other types of > virtualization. > > > domain = virDomainDefineXML (con, fedora); > > if (!domain) { > > virErrorPtr err = virGetLastError (); > > printf ("virDomainDefineXML failed: %s\n", > > err->message); > > By the way, this error reporting is wrong. Confusingly there are two > levels of errors stored by virterror, a global error and a > per-connection error. The global error is only used where you don't > have a virConnectPtr object (almost the only time is just after > virConnectOpen fails, when conn == NULL). The rest of the time you > should use virConnGetLastError: > > http://libvirt.org/html/libvirt-virterror.html#virConnGetLastError > > Rich. > > -- > Richard Jones, Emerging Technologies, Red Hat > http://et.redhat.com/~rjones > virt-top is 'top' for virtual machines. Tiny program with many > powerful monitoring features, net stats, disk stats, logging, etc. > http://et.redhat.com/~rjones/virt-top >

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[libvirt] libvirt-java: change org.libvirt.Error implementing Serializable
by Daniel Schwager 20 Aug '08

20 Aug '08

Hi java-api-team (-: could you please let org.libvirt.Error implements the serializable interface ? Exceptions (and the content like org.libvirt.Error) should be serializable. I got an exception on my host system connected via RMI to the client-system running libvirt-java (libvirt-java, cvs-snapshot 2008-08-18) like this: ------------------------------------------------ ... cause:java.rmi.UnmarshalException: Error unmarshaling return; nested exception is: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: org.libvirt.Error package org.libvirt; ------------------------------------------------ public class Error { VIR_FROM_NONE, /** * Error at Xen hypervisor layer */ VIR_FROM_XEN, ------------------------------------------------ thank you very much regards Danny ------------------------------------------------------------------- DT Netsolution GmbH - Taläckerstr. 30 - D-70437 Stuttgart Geschäftsführer: Daniel Schwager, Stefan Hörz - HRB Stuttgart 19870 Tel: +49-711-849910-32, Fax: -932 - Mailto:daniel.schwager@dtnet.de

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RE: [libvirt] Using Xen config files
by Matthew Donovan 20 Aug '08

20 Aug '08

Found it! I added serial and console devices to the XML and it appears to be running. It's not working completely as expcted but it's doing more than it was. Thanks for your help. -matthew > -----Original Message----- > From: Richard W.M. Jones [mailto:rjones@redhat.com] > Sent: Wednesday, August 20, 2008 11:44 AM > To: Matthew Donovan > Cc: libvir-list(a)redhat.com > Subject: Re: [libvirt] Using Xen config files > > On Wed, Aug 20, 2008 at 11:35:17AM -0400, Matthew Donovan wrote: > > Thanks for the quick reply! > > > > I set the LIBVIRT_DEBUG flag to 1 and ran it again. (The > output is below.) > [...] > > [root@grape ~]$ gcc -g virt_test.c -lvirt && ./a.out > > DEBUG: libvirt.c: virInitialize (register drivers) > > DEBUG: xen_internal.c: xenHypervisorInit (Using new > hypervisor call: 30001 > > ) > > DEBUG: xen_internal.c: xenHypervisorInit (Using hypervisor > call v2, sys ver3 > > dom ver5 > > ) > > DEBUG: libvirt.c: virConnectOpen (name=xen:///) > > DEBUG: libvirt.c: do_open (name "xen:///" to URI components: > > scheme xen > > opaque (null) > > authority (null) > > server (null) > > user (null) > > port 0 > > path / > > ) > > DEBUG: libvirt.c: do_open (trying driver 0 (Test) ...) > > DEBUG: libvirt.c: do_open (driver 0 Test returned DECLINED) > > DEBUG: libvirt.c: do_open (trying driver 1 (QEMU) ...) > > DEBUG: libvirt.c: do_open (driver 1 QEMU returned DECLINED) > > DEBUG: libvirt.c: do_open (trying driver 2 (Xen) ...) > > DEBUG: xen_unified.c: xenUnifiedOpen (Trying hypervisor sub-driver) > > DEBUG: xen_unified.c: xenUnifiedOpen (Activated hypervisor > sub-driver) > > DEBUG: xen_unified.c: xenUnifiedOpen (Trying XenD sub-driver) > > DEBUG: xen_unified.c: xenUnifiedOpen (Activated XenD sub-driver) > > DEBUG: xen_unified.c: xenUnifiedOpen (Trying XS sub-driver) > > DEBUG: xen_unified.c: xenUnifiedOpen (Activated XS sub-driver) > > DEBUG: libvirt.c: do_open (driver 2 Xen returned SUCCESS) > > DEBUG: libvirt.c: do_open (network driver 0 Test returned DECLINED) > > DEBUG: libvirt.c: do_open (network driver 1 QEMU returned DECLINED) > > DEBUG: remote_internal.c: doRemoteOpen (proceeding with > name = xen:///) > > DEBUG: libvirt.c: do_open (network driver 2 remote returned SUCCESS) > > DEBUG: libvirt.c: do_open (storage driver 0 Test returned DECLINED) > > DEBUG: libvirt.c: do_open (storage driver 1 storage > returned DECLINED) > > DEBUG: libvirt.c: do_open (storage driver 2 remote returned SUCCESS) > > DEBUG: libvirt.c: virDomainDefineXML (conn=0x96fe478, xml=<domain > > > type='xen'><name>fc8.conf</name><os><type>hvm</type><loader>/u > sr/lib/xen/boo > > t/hvmloader</loader><boot > > > dev='hd'/></os><memory>1024</memory><vcpu>1</vcpu><on_poweroff > >destroy</on_p > > > oweroff><on_reboot>restart</on_reboot><on_crash>restart</on_cr > ash><features> > > <pae/><acpi/><apic/></features><clock > > > sync="localtime"/><devices><emulator>/usr/lib/xen/bin/qemu-dm< > /emulator><int > > erface type='bridge'><source bridge='xenbr0'/><script > > path='vif-bridge'/></interface><disk type='block'><source > > dev='/dev/vgvms/fc8'/><target dev='hda'/></disk><disk type='block' > > device='cdrom'><source dev='/dev/cdrom'/><target > > dev='hdc'/><readonly/></disk><graphics > type='vnc'/></devices></domain>) > > DEBUG: libvirt.c: virDomainLookupByName (conn=0x96fe478, > name=fc8.conf) > > DEBUG: hash.c: __virGetDomain (New hash entry 0x9702a18) > > DEBUG: libvirt.c: virDomainCreate (domain=0x9702a18) > > DEBUG: libvirt.c: virDomainGetInfo (domain=0x9702a18, > info=0xbfa2b658) > > state = 0 > > DEBUG: libvirt.c: virConnectClose (conn=0x96fe478) > > DEBUG: hash.c: virUnrefConnect (unref connection 0x96fe478 > xen:/// 2) > > It certainly looks OK, and it seems like the domain should run after > virDomainCreate. Have you tried adding a delay of 30 seconds just to > check if the domain is starting up slowly? > > Dan & Dan, any ideas? > > Rich. > > -- > Richard Jones, Emerging Technologies, Red Hat > http://et.redhat.com/~rjones > virt-df lists disk usage of guests without needing to install any > software inside the virtual machine. Supports Linux and Windows. > http://et.redhat.com/~rjones/virt-df/ >

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[libvirt] networking
by James Bardin 20 Aug '08

20 Aug '08

Hello, I'm having trouble digging up some documentation on libvirt's network config. I'm not sure where to set this up, but I have a bridged device br0 that I would like to have available in virt-manager/virsh. Right now, I can edit the VM's xml interface element manually to use br0. Virt-manager has an option for shared physical device, but it's empty, and I can't figure out how to see it from virsh. thanks -jim

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[libvirt] Using Xen config files
by Matthew Donovan 20 Aug '08

20 Aug '08

I am trying to programmatically start Xen guest VMs (HVM) with libvirt (on Fedora Core 8) and I'm having some trouble with it. I've included my code below. Essentially, the domain seems to get created correctly but it doesn't seem to run. I don't receive any error messages from the libvirt functions but the VM does not get any CPU time (as shown with "xm list"). [root@grape ~]$ xm list Name ID Mem VCPUs State Time(s) Domain-0 0 1462 2 r----- 1313.5 fc8.conf 7 128 1 ------ 0.0 Can someone explain what I'm doing wrong here? I've tried to get this working with linux and windows guests with the same results. I've seen references on this mailing list to libvirt's ability to handle Xen configuration files but I haven't seen anything in the API documentation or public header files that refer to it. Is there a public interface to specifying a configuration file? Thanks -matthew CODE: #include <stdio.h> #include <libvirt/libvirt.h> #include <libvirt/virterror.h> //"" //"<graphics type='vnc' port='5904'/>" const char* fedora = "<domain type='xen'>" "<name>fc8.conf</name>" "<os>" "<type>hvm</type>" "<loader>/usr/lib/xen/boot/hvmloader</loader>" "<boot dev='hd'/>" "</os>" "<memory>1024</memory>" "<vcpu>1</vcpu>" "<on_poweroff>destroy</on_poweroff>" "<on_reboot>restart</on_reboot>" "<on_crash>restart</on_crash>" "<features>" "<pae/>" "<acpi/>" "<apic/>" "</features>" "<clock sync=\"localtime\"/>" "<devices>" "<emulator>/usr/lib/xen/bin/qemu-dm</emulator>" "<interface type='bridge'>" "<source bridge='xenbr0'/>" "<script path='vif-bridge'/>" "</interface>" "<disk type='block'>" "<source dev='/dev/vgvms/fc8'/>" "<target dev='hda'/>" "</disk>" "<disk type='block' device='cdrom'>" "<source dev='/dev/cdrom'/>" "<target dev='hdc'/>" "<readonly/>" "</disk>" "<graphics type='vnc'/>" "</devices>" "</domain>"; int main (int argc, char** argv) { virConnectPtr con; /* connection to the Xen hypervisor */ virDomainPtr domain; virInitialize(); con = virConnectOpen ("xen:///"); if (!con) { virErrorPtr err = virGetLastError (); printf ("virConnectOpen failed: %s\n", err->message); return -1; } domain = virDomainDefineXML (con, fedora); if (!domain) { virErrorPtr err = virGetLastError (); printf ("virDomainDefineXML failed: %s\n", err->message); } else { if (virDomainCreate (domain) < 0) { virErrorPtr err = virGetLastError (); printf ("virDomainCreate failed: %s\n", err->message); } else { virDomainInfo info = {0}; virDomainGetInfo (domain, &info); printf ("state = %d\n", info.state); } } virConnectClose (con); return 0; }

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[libvirt] [PATCH] manage number of virtual CPUs
by Evgeniy Sokolov 20 Aug '08

20 Aug '08

OpenVZ containers use all CPUs available in system by default. Limitations may be caused only by Linux kernel limitation. There is way to artificially limit number of CPUs. patch add cpu management functionality to OpenVZ driver.

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[libvirt] [PATCH] Ignore specified target path when creating logical vol
by Cole Robinson 20 Aug '08

20 Aug '08

Specifying a target path when creating a storage volume has no effect, since volumes only really use the pool's target path and 'name' field to establish the volume's target. Logical volumes expect a target path to be passed, and it can only cause problems. The attached patch erases the passed target volume and fills it in with the one generated from the create operation. Thanks, Cole

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[libvirt] [PATCH] Fix size reporting for disk pools without partitions
by Cole Robinson 20 Aug '08

20 Aug '08

The attached patch updates parthelper to print size information for a disk device if it doesn't have any allocated partitions. The current code starts by requesting the first partition, then iterating from there. But if there is no first partition, that whole info reporting thing never happens :) Seems to produce desired results for partitioned and unpartitioned devices. Thanks, Cole

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[libvirt] Question about html file in docs
by Atsushi SAKAI 20 Aug '08

20 Aug '08

Hi, I think html files in docs directory are redundunt. It is because html file is created by html.in. May I remove these files? Or are there any reason about staying these files? Thanks Atsushi SAKAI

4 10

[libvirt] qemud/.libs/libvirtd?
by Jun Koi 20 Aug '08

20 Aug '08

Hi, I added some new code to libvirt.c, and recompile. However, when "make install". qemud/.libs/libvirtd is installed but not qemud/libvirtd. Why? Looks like a bug? The problem is that qemud/libvirtd has my new code, but not qemud/.libs/libvirtd! So "make install" installs the old binary, which I dont know where it is from. (Perhaps from the first compilation?) I am not familiar with the autoconf Makefile, and cannot figure it out why it is working this way. Many thanks, Jun

4 7

[libvirt] On shutdown Destroy/Delete
by Stefan de Konink 20 Aug '08

20 Aug '08

Hi, I would really like to know how I can make a defined domain *gone* after shutdown :) (instead of it still be defined, after shutdown) Stefan

4 5

[libvirt] Use existing QEMU image with libvirt?
by Jun Koi 19 Aug '08

19 Aug '08

Hi, I have some existing QEMU images. Now I want to use it with libvirt/virsh. Is there any easy way to do that? I suppose that we need an XML file for each image, but dont want to craft them from scratch. Thanks, Jun

2 1

[libvirt] PATCH: Improve some remote driver error messages
by Daniel P. Berrange 19 Aug '08

19 Aug '08

Bug reports from users have shown diagnosing problems with the remote driver are quite tricky, so I've been looking at improving its error messages where possible. There's a number of places where we simply pass in strerror(errno) as the only data in virRaiseError. This doesn't let us narrow down just which call failed - we just get a generic message "Permission denied" or "Connection refused" with no clue what was being tried. This patch adds descriptive error messages whereever possible, fixes a place where we'd report an error to connect to IPv4 even if IPv6 succeeded, and adds some missing translations Before $ virsh --connect qemu:///system libvir: Remote error : Permission denied $ virsh --connect qemu+tcp:///system libvir: Remote error : Connection refused $ virsh --connect qemu+tcp://wibble/system libvir: Remote error : invalid argument in Name or service not known After $ ./src/virsh --connect qemu:///system libvir: Remote error : unable to connect to '/var/run/libvirt/libvirt-sock': Permission denied $ ./src/virsh --connect qemu+tcp:///system libvir: Remote error : unable to connect to 'localhost': Connection refused $ ./src/virsh --connect qemu+tcp://wibble/system libvir: Remote error : unable to resolve hostname 'wibble': Name or service not known Daniel Index: src/remote_internal.c =================================================================== RCS file: /data/cvs/libvirt/src/remote_internal.c,v retrieving revision 1.80 diff -u -r1.80 remote_internal.c --- src/remote_internal.c 26 Jun 2008 09:37:51 -0000 1.80 +++ src/remote_internal.c 19 Aug 2008 10:36:32 -0000 @@ -371,13 +371,12 @@ priv->hostname = strdup (uri->server ? uri->server : "localhost"); - if (!priv->hostname) { - error (NULL, VIR_ERR_NO_MEMORY, _("allocating priv->hostname")); - goto failed; - } + if (!priv->hostname) + goto out_of_memory; if (uri->user) { username = strdup (uri->user); - if (!username) goto out_of_memory; + if (!username) + goto out_of_memory; } /* Get the variables from the query string. @@ -491,12 +490,15 @@ // http://people.redhat.com/drepper/userapi-ipv6.html struct addrinfo *res, *r; struct addrinfo hints; + int saved_errno = EINVAL; memset (&hints, 0, sizeof hints); hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_ADDRCONFIG; int e = getaddrinfo (priv->hostname, port, &hints, &res); if (e != 0) { - error (conn, VIR_ERR_INVALID_ARG, gai_strerror (e)); + errorf (conn, VIR_ERR_SYSTEM_ERROR, + _("unable to resolve hostname '%s': %s"), + priv->hostname, gai_strerror (e)); goto failed; } @@ -516,7 +518,7 @@ priv->sock = socket (r->ai_family, SOCK_STREAM, 0); if (priv->sock == -1) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (socket_errno ())); + saved_errno = socket_errno(); continue; } @@ -526,7 +528,7 @@ sizeof no_slow_start); if (connect (priv->sock, r->ai_addr, r->ai_addrlen) == -1) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (socket_errno ())); + saved_errno = socket_errno(); close (priv->sock); continue; } @@ -545,6 +547,9 @@ } freeaddrinfo (res); + errorf (conn, VIR_ERR_SYSTEM_ERROR, + _("unable to connect to '%s': %s"), + priv->hostname, strerror (saved_errno)); goto failed; tcp_connected: @@ -563,23 +568,23 @@ uid_t uid = getuid(); if (!(pw = getpwuid(uid))) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); + errorf (conn, VIR_ERR_SYSTEM_ERROR, + _("unable to lookup user '%d': %s"), + uid, strerror (errno)); goto failed; } if (asprintf (&sockname, "@%s" LIBVIRTD_USER_UNIX_SOCKET, pw->pw_dir) < 0) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); - goto failed; + sockname = NULL; + goto out_of_memory; } } else { if (flags & VIR_DRV_OPEN_REMOTE_RO) sockname = strdup (LIBVIRTD_PRIV_UNIX_SOCKET_RO); else sockname = strdup (LIBVIRTD_PRIV_UNIX_SOCKET); - if (sockname == NULL) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); - goto failed; - } + if (sockname == NULL) + goto out_of_memory; } } @@ -598,7 +603,9 @@ autostart_retry: priv->sock = socket (AF_UNIX, SOCK_STREAM, 0); if (priv->sock == -1) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); + errorf (conn, VIR_ERR_SYSTEM_ERROR, + _("unable to create socket %s"), + strerror (errno)); goto failed; } if (connect (priv->sock, (struct sockaddr *) &addr, sizeof addr) == -1) { @@ -620,7 +627,9 @@ goto autostart_retry; } } - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); + errorf (conn, VIR_ERR_SYSTEM_ERROR, + _("unable to connect to '%s': %s"), + sockname, strerror (errno)); goto failed; } @@ -634,17 +643,13 @@ if (no_tty) nr_args += 5; /* For -T -o BatchMode=yes -e none */ command = command ? : strdup ("ssh"); - if (command == NULL) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); - goto failed; - } + if (command == NULL) + goto out_of_memory; // Generate the final command argv[] array. // ssh -p $port [-l $username] $hostname $netcat -U $sockname [NULL] - if (VIR_ALLOC_N(cmd_argv, nr_args) < 0) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); - goto failed; - } + if (VIR_ALLOC_N(cmd_argv, nr_args) < 0) + goto out_of_memory; j = 0; cmd_argv[j++] = strdup (command); @@ -667,12 +672,9 @@ cmd_argv[j++] = strdup (sockname ? sockname : LIBVIRTD_PRIV_UNIX_SOCKET); cmd_argv[j++] = 0; assert (j == nr_args); - for (j = 0; j < (nr_args-1); j++) { - if (cmd_argv[j] == NULL) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (ENOMEM)); - goto failed; - } - } + for (j = 0; j < (nr_args-1); j++) + if (cmd_argv[j] == NULL) + goto out_of_memory; } /*FALLTHROUGH*/ @@ -685,28 +687,38 @@ * to faff around with two file descriptors (a la 'pipe(2)'). */ if (socketpair (PF_UNIX, SOCK_STREAM, 0, sv) == -1) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); + errorf (conn, VIR_ERR_SYSTEM_ERROR, + _("unable to create socket pair %s"), + strerror (errno)); goto failed; } pid = fork (); if (pid == -1) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); + errorf (conn, VIR_ERR_SYSTEM_ERROR, + _("unable to fork external network transport: %s"), + strerror (errno)); goto failed; } else if (pid == 0) { /* Child. */ close (sv[0]); // Connect socket (sv[1]) to stdin/stdout. close (0); - if (dup (sv[1]) == -1) perror ("dup"); + if (dup (sv[1]) == -1) { + perror ("dup"); + _exit(1); + } close (1); - if (dup (sv[1]) == -1) perror ("dup"); + if (dup (sv[1]) == -1) { + perror ("dup"); + _exit(1); + } close (sv[1]); // Run the external process. if (!cmd_argv) { if (VIR_ALLOC_N(cmd_argv, 2) < 0) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); - goto failed; + perror("malloc"); + _exit(1); } cmd_argv[0] = command; cmd_argv[1] = 0; @@ -770,7 +782,7 @@ return retcode; out_of_memory: - error (NULL, VIR_ERR_NO_MEMORY, _("uri params")); + error (conn, VIR_ERR_NO_MEMORY, NULL); failed: /* Close the socket if we failed. */ @@ -882,10 +894,9 @@ { struct stat sb; if (stat(file, &sb) < 0) { - __virRaiseError (conn, NULL, NULL, VIR_FROM_REMOTE, VIR_ERR_RPC, - VIR_ERR_ERROR, LIBVIRT_CACERT, NULL, NULL, 0, 0, - _("Cannot access %s '%s': %s (%d)"), - type, file, strerror(errno), errno); + errorf(conn, VIR_ERR_RPC, + _("Cannot access %s '%s': %s (%d)"), + type, file, strerror(errno), errno); return -1; } return 0; @@ -905,7 +916,9 @@ /* X509 stuff */ err = gnutls_certificate_allocate_credentials (&x509_cred); if (err) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to allocate TLS credentials: %s"), + gnutls_strerror (err)); return -1; } @@ -923,7 +936,9 @@ gnutls_certificate_set_x509_trust_file (x509_cred, LIBVIRT_CACERT, GNUTLS_X509_FMT_PEM); if (err < 0) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to load CA certificate: %s"), + gnutls_strerror (err)); return -1; } @@ -936,7 +951,9 @@ LIBVIRT_CLIENTKEY, GNUTLS_X509_FMT_PEM); if (err < 0) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to load private key/certificate: %s"), + gnutls_strerror (err)); return -1; } @@ -963,21 +980,27 @@ */ err = gnutls_init (&session, GNUTLS_CLIENT); if (err) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to initialize TLS client: %s"), + gnutls_strerror (err)); return NULL; } /* Use default priorities */ err = gnutls_set_default_priority (session); if (err) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to set TLS algorithm priority: %s"), + gnutls_strerror (err)); return NULL; } err = gnutls_certificate_type_set_priority (session, cert_type_priority); if (err) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to set certificate priority: %s"), + gnutls_strerror (err)); return NULL; } @@ -985,7 +1008,9 @@ */ err = gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred); if (err) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to set session credentials: %s"), + gnutls_strerror (err)); return NULL; } @@ -998,7 +1023,9 @@ if (err < 0) { if (err == GNUTLS_E_AGAIN || err == GNUTLS_E_INTERRUPTED) goto again; - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to complete TLS handshake: %s"), + gnutls_strerror (err)); return NULL; } @@ -1018,12 +1045,14 @@ if (len < 0 && len != GNUTLS_E_UNEXPECTED_PACKET_LENGTH) { if (len == GNUTLS_E_AGAIN || len == GNUTLS_E_INTERRUPTED) goto again_2; - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (len)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to complete TLS initialization: %s"), + gnutls_strerror (len)); return NULL; } if (len != 1 || buf[0] != '\1') { error (conn, VIR_ERR_RPC, - _("server verification (of our certificate or IP address) failed\n")); + _("server verification (of our certificate or IP address) failed\n")); return NULL; } @@ -1047,33 +1076,39 @@ time_t now; if ((ret = gnutls_certificate_verify_peers2 (session, &status)) < 0) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (ret)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to verify server certificate: %s"), + gnutls_strerror (ret)); return -1; } if ((now = time(NULL)) == ((time_t)-1)) { - error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno)); + errorf (conn, VIR_ERR_SYSTEM_ERROR, + _("cannot get current time: %s"), + strerror (errno)); return -1; } if (status != 0) { - const char *reason = "Invalid certificate"; + const char *reason = _("Invalid certificate"); if (status & GNUTLS_CERT_INVALID) - reason = "The certificate is not trusted."; + reason = _("The certificate is not trusted."); if (status & GNUTLS_CERT_SIGNER_NOT_FOUND) - reason = "The certificate hasn't got a known issuer."; + reason = _("The certificate hasn't got a known issuer."); if (status & GNUTLS_CERT_REVOKED) - reason = "The certificate has been revoked."; + reason = _("The certificate has been revoked."); #ifndef GNUTLS_1_0_COMPAT if (status & GNUTLS_CERT_INSECURE_ALGORITHM) - reason = "The certificate uses an insecure algorithm"; + reason = _("The certificate uses an insecure algorithm"); #endif - error (conn, VIR_ERR_RPC, reason); + errorf (conn, VIR_ERR_RPC, + _("server certificate failed validation: %s"), + reason); return -1; } @@ -1092,13 +1127,17 @@ ret = gnutls_x509_crt_init (&cert); if (ret < 0) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (ret)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to initialize certificate: %s"), + gnutls_strerror (ret)); return -1; } ret = gnutls_x509_crt_import (cert, &certs[i], GNUTLS_X509_FMT_DER); if (ret < 0) { - error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (ret)); + errorf (conn, VIR_ERR_GNUTLS_ERROR, + _("unable to import certificate: %s"), + gnutls_strerror (ret)); gnutls_x509_crt_deinit (cert); return -1; } @@ -1117,13 +1156,9 @@ if (i == 0) { if (!gnutls_x509_crt_check_hostname (cert, priv->hostname)) { - __virRaiseError - (conn, NULL, NULL, - VIR_FROM_REMOTE, VIR_ERR_RPC, - VIR_ERR_ERROR, priv->hostname, NULL, NULL, - 0, 0, - _("Certificate's owner does not match the hostname (%s)"), - priv->hostname); + errorf(conn, VIR_ERR_RPC, + _("Certificate's owner does not match the hostname (%s)"), + priv->hostname); gnutls_x509_crt_deinit (cert); return -1; } @@ -4721,8 +4756,9 @@ errmsg = __virErrorMsg (code, errorMessage); __virRaiseError (conn, NULL, NULL, VIR_FROM_REMOTE, - code, VIR_ERR_ERROR, NULL, NULL, NULL, 0, 0, - "%s", errmsg); + code, VIR_ERR_ERROR, + errmsg, errorMessage, NULL, -1, -1, + errmsg, errorMessage); } /* For errors generated on the server side and sent back to us. */ -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] PATCH: Ensure errors are guarenteed reported in virConnectOpen
by Daniel P. Berrange 19 Aug '08

19 Aug '08

The virConnectOpen method is unfortuantely rather special. While there is a virConnect object available, the current rule is that drivers must report errors against the global error object, because upon failure no virConnect object will be returned to the caller. Unforatunately, despite frequent cleanups of code getting this wrong, I've just audited the remote driver and found another 20 or so places where its wrong. This is clearly not a sustainable approach to error reporting. The guarenteed correct solution is actually rather simple - Always report errors against the virConnect object, even in the driver open method - In the cleanup patch of do_open() in libvirt.c, if no global error is set, copy the error from the virConnect object's virError, into the global virError. With this in place we can change all the drivers back to always report against the error object, and thus cleanup some disgusting code like __virRaiseError (in_open ? NULL : conn, ... To just __virRaiseError (conn, ... Daniel Index: src/libvirt.c =================================================================== RCS file: /data/cvs/libvirt/src/libvirt.c,v retrieving revision 1.151 diff -u -r1.151 libvirt.c --- src/libvirt.c 18 Aug 2008 09:24:46 -0000 1.151 +++ src/libvirt.c 19 Aug 2008 10:29:51 -0000 @@ -735,10 +735,8 @@ name = "xen:///"; ret = virGetConnect(); - if (ret == NULL) { - virLibConnError(NULL, VIR_ERR_NO_MEMORY, _("allocating connection")); + if (ret == NULL) return NULL; - } uri = xmlParseURI (name); if (!uri) { @@ -839,7 +837,21 @@ failed: if (ret->driver) ret->driver->close (ret); if (uri) xmlFreeURI(uri); - virUnrefConnect(ret); + + /* If not global error was set, copy any error set + in the connection object we're about to dispose of */ + if (__lastErr.code == VIR_ERR_OK) { + memcpy(&__lastErr, &ret->err, sizeof(ret->err)); + memset(&ret->err, 0, sizeof(ret->err)); + } + + /* Still no error set, then raise a generic error */ + if (__lastErr.code == VIR_ERR_OK) + virLibConnError (NULL, VIR_ERR_INTERNAL_ERROR, + _("unable to open connection")); + + virUnrefConnect(ret); + return NULL; } -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] Libvirt XML description
by Dimitrios Kalogeras 19 Aug '08

19 Aug '08

Hi to all of you, I am trying to gather knowledge about the XML DTD of libvirt bu the http://libvirt.org/format.html does not provide any useful info. Can you point me somewhere else ? Cheers, Dimitris -- -- Dimitrios K. Kalogeras Electrical Engineer, Ph.D. Network Engineer NTUA/GR-Net Network Management Center _____________________________________ icq: 11887484 voice: +30-210-772 1863 fax: +30-210-772 1866 e-mail: D.Kalogeras(a)noc.ntua.gr pub 1024D/0E421B50 2007-01-17 [expires: 2008-01-17] Dimitrios Kalogeras (dkalo) <D.Kalogeras(a)noc.ntua.gr> Key fingerprint = F8C8 7B67 74A4 1F82 CDDF 8554 E1EF 7FAE 0E42 1B50 PGP-KEY: http://ajax.noc.ntua.gr/~dkalo/dkalo_pgp.txt

5 5

[libvirt] fail to connect via ssh
by MINAI Katsuhito 19 Aug '08

19 Aug '08

Hi all, I have built libvirt by http://libvirt.org/sources/libvirt-0.4.4.tar.gz on fedora 9 as follows. $ tar zxf libvirt-cvs-snapshot.tar.gz $ cd libvirt-0.4.4 $ ./configure --without-xen $ make However, virsh failed to connect via SSH to remote server. How can I fix the problem? $ ./src/virsh -c xen+ssh://root@server list root@server's password: libvir: Remote error : socket closed unexpectedly error: failed to connect to the hypervisor Thanks, Minai

1 1

[libvirt] [patch] remove duplicate call of virInitialize()
by Nguyen Anh Quynh 18 Aug '08

18 Aug '08

Hi, This patch removes the redundant call to virInitialize() inside __virStateInitialize(). Thanks, Quynh

2 1

[libvirt] virt-install and custom distros
by Kay Williams 15 Aug '08

15 Aug '08

We have an application that builds custom distributions based on RHEL, CentOS or Fedora. We would like to install these over the network using virt-install, but we've run into an issue with the distro check logic. Specifically, virt-install fails unless it finds a string "Red Hat Enterprise Linux", "Fedora" or "CentOS" within the family field of the .treeinfo file. Our application currently sets the family field to the user-provided distro name (see below). We have avoided using the base distro name given trademark concerns. [general] family = <user provided value> variant = <user provided value> We can get virt-install to pass the distro check by setting the family name to one of the accepted values, e.g. [general] family = Fedora variant = [user provided distro name] Is this the expected/desired use for the family and variant fields? Or is there another approach we should consider? Thanks, Kay

2 1

[libvirt] [PATCH] Fix serial console telnet protocol support
by Mark McLoughlin 15 Aug '08

15 Aug '08

With e.g.: <serial type='tcp'> <source mode='bind' host='127.0.0.1' service='4444'/> <protocol type='telnet'/> <target port='0'/> </serial> You currently get: Unknown option: listen qemu: could not open serial device 'telnet:127.0.0.1:4444,listen' With the telnet protocol, qemu expects "server" as an option rather than "listen". Signed-off-by: Mark McLoughlin <markmc(a)redhat.com> Index: libvirt/src/qemu_conf.c =================================================================== --- libvirt.orig/src/qemu_conf.c 2008-08-13 18:14:34.000000000 +0100 +++ libvirt/src/qemu_conf.c 2008-08-13 18:35:20.000000000 +0100 @@ -685,12 +685,19 @@ break; case VIR_DOMAIN_CHR_TYPE_TCP: - if (snprintf(buf, buflen, "%s:%s:%s%s", - dev->data.tcp.protocol == VIR_DOMAIN_CHR_TCP_PROTOCOL_TELNET ? "telnet" : "tcp", - dev->data.tcp.host, - dev->data.tcp.service, - dev->data.tcp.listen ? ",listen" : "") >= buflen) - return -1; + if (dev->data.tcp.protocol == VIR_DOMAIN_CHR_TCP_PROTOCOL_TELNET) { + if (snprintf(buf, buflen, "telnet:%s:%s%s", + dev->data.tcp.host, + dev->data.tcp.service, + dev->data.tcp.listen ? ",server" : "") >= buflen) + return -1; + } else { + if (snprintf(buf, buflen, "tcp:%s:%s%s", + dev->data.tcp.host, + dev->data.tcp.service, + dev->data.tcp.listen ? ",listen" : "") >= buflen) + return -1; + } break; case VIR_DOMAIN_CHR_TYPE_UNIX:

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