August 2008 - Devel - libvirt List Archives

[libvirt] PATCH: Fix setting of bridge forward-delay
by Daniel P. Berrange 01 Aug '08

01 Aug '08

The libvirt virtual networking allows setting of the forward-delay parameter. This is the delay the kernel inserts before it starts forwarding traffic when a guest VIF is added to a bridge. The default network config sets this to zero, and previously we had a bug where we accidentally called brSetForwardDelay() based on the STP parameter which was zero, so we did in fact have a forward delay of 0 as desired. Rich then fixed this bug, and thus we no longer accidentally call the brSetForardDelay() method. Unfortuntely the place where we *do* delibrately call it is conditionalized on if (network->def->delay So if you set a forward delay of zero, we never explicitly set this on the bridge. Thus the kernel's default setting applies which is 15 seconds. The fix is trivial - just remove the conditional. So previously you could see traffic forwaarding delayed by the kernel for 30 seconds Aug 1 11:34:16 t60wlan kernel: device vnet0 entered promiscuous mode Aug 1 11:34:16 t60wlan kernel: virbr0: port 1(vnet0) entering listening state Aug 1 11:34:31 t60wlan kernel: virbr0: port 1(vnet0) entering learning state Aug 1 11:34:46 t60wlan kernel: virbr0: topology change detected, propagating Aug 1 11:34:46 t60wlan kernel: virbr0: port 1(vnet0) entering forwarding state Now it applies immediately Aug 1 11:40:07 t60wlan kernel: device vnet0 entered promiscuous mode Aug 1 11:40:07 t60wlan kernel: virbr0: port 1(vnet0) entering listening state Aug 1 11:40:07 t60wlan kernel: virbr0: port 1(vnet0) entering learning state Aug 1 11:40:07 t60wlan kernel: virbr0: topology change detected, propagating Aug 1 11:40:07 t60wlan kernel: virbr0: port 1(vnet0) entering forwarding state Daniel Index: src/qemu_driver.c =================================================================== RCS file: /data/cvs/libvirt/src/qemu_driver.c,v retrieving revision 1.98 diff -u -r1.98 qemu_driver.c --- src/qemu_driver.c 30 Jul 2008 09:20:19 -0000 1.98 +++ src/qemu_driver.c 1 Aug 2008 10:46:36 -0000 @@ -1480,8 +1480,7 @@ } - if (network->def->delay && - (err = brSetForwardDelay(driver->brctl, network->def->bridge, network->def->delay))) { + if ((err = brSetForwardDelay(driver->brctl, network->def->bridge, network->def->delay))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, _("failed to set bridge forward delay to %ld"), network->def->delay); -- |: 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] Contribution to libvirt
by rajesh battala 01 Aug '08

01 Aug '08

hi Daniel. thanks a lot.. i will start working on it.. thanks ----- Original Message ---- From: Daniel Veillard <veillard(a)redhat.com> To: rajesh battala <rajesh.battala(a)yahoo.co.in> Cc: libvir-list(a)redhat.com Sent: Friday, 1 August, 2008 12:28:45 PM Subject: Re: [libvirt] Contribution to libvirt On Fri, Aug 01, 2008 at 12:15:38PM +0530, rajesh battala wrote: > hi all.. > i am interested to contribute to libvirt. > i want to contribute to the java bindings. > is there any procedure for that. > plz let me know i ddint find doc on the site. Discuss what you would like to provide here, send patches in unified diff format against the CVS head. See http://libvirt.org/bugs.html http://libvirt.org/java.html Basically it's like for any other project, I suggest you read what Rich Jones wrote on the topic: http://et.redhat.com/~rjones/how-to-supply-code-to-open-source-projects/ Daniel -- Red Hat Virtualization group http://redhat.com/virtualization/ Daniel Veillard | virtualization library http://libvirt.org/ veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/ Unlimited freedom, unlimited storage. Get it now, on http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html/

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[libvirt] [PATCH]: Add carriage returns to qemudLog
by Chris Lalancette 01 Aug '08

01 Aug '08

Since qemudLog just maps to fprintf(stderr), add carriage returns every where it is used, so it's easier on the eyes while debugging. Signed-off-by: Chris Lalancette <clalance(a)redhat.com>

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[libvirt] [PATCH] Add link to how-to-contribute doc from HACKING file
by Richard W.M. Jones 01 Aug '08

01 Aug '08

Very trivial patch which adds a link to my document on how to contribute to open source projects to the HACKING file. http://et.redhat.com/~rjones/how-to-supply-code-to-open-source-projects/ Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones Read my OCaml programming blog: http://camltastic.blogspot.com/ Fedora now supports 59 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

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[libvirt] libvirt, XEN, bridged network and arp
by Christoph Höger 01 Aug '08

01 Aug '08

Hi, Ive got a severe networking problem over here: When I boot up my machine (debian lenny) using virsh 0.4.4 on an debian etch, a new virtual eth device (something like vif97.0) is assigned to that machine and that device is attached to my bridge virbr1. That is fine. Not so fine is the fact, that no arp packages come over to my bridge for about 5 seconds or so. During that time I can see a lot of arp-who-has on vifXX.0 but nothing on virbr1 so there are no answers and the result is my guest machine not mounting nfs directories on boot. After some time (e.g. after login) networking works fine - but thats definitely too late - I need those directories mounted on boot. Is there a way to fix that?

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[libvirt] PATCH: 0/14: Generic XML parsers/formatters for all drivers
by Daniel P. Berrange 01 Aug '08

01 Aug '08

The following series of patchs provide a generic XML parser and formatter for the network and domain XML config formats. They then switch over the test, qemu, Xend and XM drivers to these APIs. The LXC driver is work in progress. 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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[libvirt] Contribution to libvirt
by rajesh battala 01 Aug '08

01 Aug '08

hi all.. i am interested to contribute to libvirt. i want to contribute to the java bindings. is there any procedure for that. plz let me know i ddint find doc on the site. thanks rajesh Unlimited freedom, unlimited storage. Get it now, on http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html/

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[libvirt] [PATCH] Minor doc tweaks
by Charles Duffy 01 Aug '08

01 Aug '08

Per subject; clarifies the distinction between virDomainCreateLinux and virDomainDefineXML+virDomainCreate, and adds documentation for the autoport display attribute.

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[libvirt] [Charles_Duffy@messageone.com: [PATCH] autoport overrides actual VNC port number in dump-xml]
by Daniel P. Berrange 01 Aug '08

01 Aug '08

Forwarding message that was sent to wrong list... ----- Forwarded message from Charles Duffy <Charles_Duffy(a)messageone.com> ----- > To: kvm(a)vger.kernel.org > From: Charles Duffy <Charles_Duffy(a)messageone.com> > Subject: [PATCH] autoport overrides actual VNC port number in dump-xml > Date: Wed, 30 Jul 2008 00:32:57 -0500 > > Per subject; if autoport is in use for a host, the current > virDomainGraphicsDefFormat code always emits "port=-1", even if a port > is assigned to the host; this leaves no way for a client to find the VNC > port assigned to the host in question. > > --------------090103050500010408080902 > Content-Type: text/x-diff; > name="libvirt-fix-vnc-port-output.patch" > Content-Transfer-Encoding: 7bit > Content-Disposition: inline; > filename="libvirt-fix-vnc-port-output.patch" > > diff --git a/src/domain_conf.c b/src/domain_conf.c > index d629093..ece471e 100644 > --- a/src/domain_conf.c > +++ b/src/domain_conf.c > @@ -2431,11 +2431,11 @@ virDomainGraphicsDefFormat(virConnectPtr conn, > > switch (def->type) { > case VIR_DOMAIN_GRAPHICS_TYPE_VNC: > - if (def->data.vnc.autoport) > - virBufferAddLit(buf, " port='-1'"); > - else if (def->data.vnc.port) > + if (def->data.vnc.port) > virBufferVSprintf(buf, " port='%d'", > def->data.vnc.port); > + else if (def->data.vnc.autoport) > + virBufferAddLit(buf, " port='-1'"); > > virBufferVSprintf(buf, " autoport='%s'", > def->data.vnc.autoport ? "yes" : "no"); > > --------------090103050500010408080902-- > > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo(a)vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > ----- End forwarded message ----- -- |: 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] qemudDomainCreate check if domain is already active
by Guido Günther 01 Aug '08

01 Aug '08

Hi, currently virsh create foo.xml overwrites running domains. In case of qemu this leaves detached qemu processes around and the domain creation fails later on being unable to start other domains afterwards - not nice. Attached patch checks if we already have a running domain by that name and in this case refuses to create a new domain from xml by that name. Probably this check needs to be pushed further upward since this might affect other hypervisors too, haven't checked that though. Cheers, -- Guido

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