October 2010 - Devel - libvirt List Archives

[libvirt] [PATCH] Avoid squashing errors during network startup cleanup path
by Daniel P. Berrange 26 Oct '10

26 Oct '10

When failing to start a virtual network, we have to cleanup, tearing down any iptables rules. If the iptables rules were not present yet though, this raises an error, which squashes the original error we were handling. * src/network/bridge_driver.c: When failing to start a virtual network, don't squash the original error in cleanup --- src/network/bridge_driver.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index 8721747..0777d85 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -1171,6 +1171,7 @@ static int networkStartNetworkDaemon(struct network_driver *driver, virNetworkObjPtr network) { int err; + virErrorPtr save_err; if (virNetworkObjIsActive(network)) { networkReportError(VIR_ERR_INTERNAL_ERROR, @@ -1255,7 +1256,12 @@ static int networkStartNetworkDaemon(struct network_driver *driver, } err_delbr2: + save_err = virSaveLastError(); networkRemoveIptablesRules(driver, network); + if (save_err) { + virSetError(save_err); + virFreeError(save_err); + } err_delbr1: if ((err = brSetInterfaceUp(driver->brctl, network->def->bridge, 0))) { -- 1.7.2.3

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Re: [libvirt] How to start a defined domain
by 黄亮 26 Oct '10

26 Oct '10

Well, after "make clean", I run the compiled start.c, still won't work. And I forget to metion, an error msg is shown: libvir: Xen error : Domain not found: xenUnifiedDomainLookupByName is that means I missed something? 2010-10-26 黄亮发件人： Osier 发送时间： 2010-10-26 18:05:46 收件人：黄亮抄送：主题： Re: [libvirt] How to start a defined domain ----- "黄亮" <lancerhuang(a)163.com> wrote: > > Accroding to your case, it seems I have no need to upgrade libvirt to > 0.8.4 > Will that work if I erase 0.8.4 using "make clean" and draw back to > 0.6.3 ? yep, think so, if you don't need the new features, and 0.6.3 is enough for your project requirement.. :-) - Osier > > > > 2010-10-26 > > 黄亮 > > 发件人： Osier > 发送时间： 2010-10-26 17:10:40 > 收件人：黄亮 > 抄送： > 主题： Re: [libvirt] How to start a defined domain > > > > ----- "黄亮" <lancerhuang(a)163.com> wrote: > > > > > Thanks for your reply, Osier. > > > > > > The distro I'm using is CentOS release 5.5 (Final) > > > > I'm not quite sure about the version of libvirt. At first, it seems > to > > be 0.6.3, because /usr/lib64/libvirt.so.0 points to > > /usr/lib64/libvirt.so.0.6.3 > > Then I downloaded the src of libvirt_0.8.4 from offical website, and > > configure, make, make install. > > But now it show errors when I type "virsh". The error message lies > > below: > > > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.8.2' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.7.1' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.7.5' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.8.1' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.7.0' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.7.2' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.7.3' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.8.0' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_PRIVATE_0.8.4' > > not found (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.7.7' not > found > > (required by virsh) > > virsh: /usr/local/lib/libvirt.so.0: version `LIBVIRT_0.6.4' not > found > > (required by virsh) > > probly you should try to erase the 0.6.3, then compile and install > libvirt > like: > > # ./configure --prefix=/usr --libdir=/usr/lib64 > # make > # make install > > your test program has no problem on my box. the libvirt on my box also > is > 0.6.3. > > Regards > > - Osier > > > > As for xen, it is 3.3.2. The full "xm info" message is listed below: > > host : testbed01 > > release : 2.6.18-194.11.4.el5xen > > version : #1 SMP Tue Sep 21 05:40:24 EDT 2010 > > machine : x86_64 > > nr_cpus : 8 > > nr_nodes : 1 > > cores_per_socket : 4 > > threads_per_core : 2 > > cpu_mhz : 2793 > > hw_caps : > > > bfebfbff:28100800:00000000:00000140:0098e3fd:00000000:00000001:00000000 > > virt_caps : hvm > > total_memory : 4055 > > free_memory : 533 > > node_to_cpu : node0:0-7 > > node_to_memory : node0:533 > > xen_major : 3 > > xen_minor : 3 > > xen_extra : .2 > > xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 > > hvm-3.0-x86_32p hvm-3.0-x86_64 > > xen_scheduler : credit > > xen_pagesize : 4096 > > platform_params : virt_start=0xffff800000000000 > > xen_changeset : unavailable > > cc_compiler : gcc version 4.1.2 20080704 (Red Hat 4.1.2-44) > > cc_compile_by : root > > cc_compile_domain : gitco.tld > > cc_compile_date : Tue Aug 18 21:07:28 CEST 2009 > > xend_config_format : 4 > > > > I've write a simple c program to test the api, and it is listed > below: > > > > 1 // This program aims to test the api which can start the VM > > 2 > > 3 #include "stdio.h" > > 4 #include "stdlib.h" > > 5 #include "libvirt/libvirt.h" > > 6 > > 7 int main(int argc ,char* argv[]) > > 8 { > > 9 virConnectPtr conn; > > 10 conn = virConnectOpen( "xen+tcp://localhost?no_Verify=1" ); > > 11 if( conn == NULL ) > > 12 { > > 13 printf( "Failed to Connect\n" ); > > 14 return 1; > > 15 } > > 16 const char* host = "vm01"; > > 17 virDomainPtr dom; > > 18 dom = virDomainLookupByName( conn, host ); > > 19 if( dom == NULL ) > > 20 { > > 21 printf( "can't find dom\n" ); > > 22 return 1; > > 23 } > > 24 // else > > 25 // { > > 26 // virDomainFree( dom ); > > 27 // virConnectClose( conn ); > > 28 // printf("done\n"); > > 29 // return 0; > > 30 // } > > 31 if( virDomainCreate( dom ) == -1 ) > > 32 { > > 33 printf( "failed to Start\n" ); > > 34 virDomainFree( dom ); > > 35 virConnectClose( conn ); > > 36 return 1; > > 37 } > > 38 else > > 39 { > > 40 printf( "Started\n" ); > > 41 virDomainFree( dom ); > > 42 virConnectClose( conn ); > > 43 return 0; > > 44 } > > 45 } > > > > 2010-10-26 > > > > Lancer > > > > 发件人： Osier > > 发送时间： 2010-10-26 11:35:31 > > 收件人：黄亮 > > 抄送： libvir-list > > 主题： Re: [libvirt] How to start a defined domain > > > > > > > > ----- "黄亮" <lancerhuang(a)163.com> wrote: > > > > > I've create a domain called "vm01" using Virt-Manager, the GUI > tool. > > > Now I wanna use libvirt api to control the life cycle of vm01. > > > It went on well with shutdown and reboot, but how to start it > became > > a > > > problem. > > > > > > I was intended to get the virDomainPtr by using > > virDomainLookupByName > > > api, and then start it using virDomainCreate api. > > > But it turns out that virDomainLookupByName api cannot return a > > > virDomainPtr for a defined but not running domain. > > > > > > > no, it can :-) > > > > If it really doesn't work for you, could you write a simple program > to > > reproduce it? and try to explain what's the version of libvirt you > > use, > > on which distro, etc, any helpful info is welcomed. :-) > > > > Thanks > > > > - Osier > > > > > That's my situation, what do you suggest I do now? > > > Thanks in advance. > > > > > > 2010-10-26 > > > > > > Lancer > > > -- > > > libvir-list mailing list > > > libvir-list(a)redhat.com > > > https://www.redhat.com/mailman/listinfo/libvir-list > > > > __________ Information from ESET Smart Security, version of virus > > signature database 5562 (20101025) __________ > > > > The message was checked by ESET Smart Security. > > > > http://www.eset.com > > __________ Information from ESET Smart Security, version of virus > signature database 5562 (20101025) __________ > > The message was checked by ESET Smart Security. > > http://www.eset.com __________ Information from ESET Smart Security, version of virus signature database 5563 (20101026) __________ The message was checked by ESET Smart Security. http://www.eset.com

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[libvirt] RFC: Libvirt extensions for QEMU tracing
by Prerna Saxena 26 Oct '10

26 Oct '10

Hi, Tracing infrastructure is now a part of upstream QEMU, which allows options to choose different trace backends to handle trace-events of interest. The choice of 'simple' trace backend allows users to dynamically enable/disable trace events for a running qemu instance as well as to set options for logging traces to a desired file via the qemu monitor. While the QMP interfaces are still under discussion (http://www.mail-archive.com/qemu-devel@nongnu.org/msg44535.html) I propose the following extensions for virsh to make use of human-monitor tracing commands: 1. virsh trace-events DOMAIN-ID [set TRACE-EVENT ON ] ---------------------------------------------------- - Implements QEMU monitor command 'trace event' to change state of a particular trace-event. - Eg, virsh trace-events DOMAIN-ID set ABC on : changes state of trace-event 'ABC' to enabled. - When specified without arguments, it implements QEMU monitor command to show all currently available trace events and their state for a specific instance. - Eg, virsh trace-events DOMAIN-ID : lists all trace-events with their state for that instance. 2. virsh trace-file DOMAIN_ID [set FILENAME | --enable | --disable] ------------------------------------------------------------------- - Implements the qemu monitor command : trace-file - Without any arguments, it lists the currently active trace output file with its state. - The 'set' subcommand changes the output file to FILENAME. - The --enable and --disable switches respectively enable and disable writing of trace data to output file. The catch is, these are only available for 'simple' trace backend for qemu, so one would need to be careful of handling failures when these commands are passed to qemu instances compiled with a different trace backend. It would have been much easier if there existed a generic virsh command to pass commands to the QEMU monitor. I saw some patches for qemu-monitor-command option for virsh,(http://www.mail-archive.com/libvir-list@redhat.com/msg26237.html) but looks like it is not upstream right now. In order to support QEMU tracing, would this be a better bet than implementing virsh extensions listed above ? If yes, any chance we might have it in for the next release ? Awaiting feedback, -- Prerna Saxena Linux Technology Centre, IBM Systems and Technology Lab, Bangalore, India

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[libvirt] List of available libvirt drivers installed?
by Shi Jin 26 Oct '10

26 Oct '10

I am wondering if there is a way to show a list of available libvirt hypervisor drvers installed in an existing libvirt installation. I know based on the version of libvirt, I can find out supported drivers from this matrix: http://libvirt.org/hvsupport.html However, the particular installation may not turn on all available drivers for this particular build. Is there a way to find out? Particularly, I want to find out if the default libvirt coming with RHEL-5/6 supports VMware ESX, and the same for Ubuntu-10.4/10.10. Thanks in advance. Shi -- Shi Jin, PhD

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[libvirt] [PATCH v2 1/2] visrh dump compression support
by KAMEZAWA Hiroyuki 26 Oct '10

26 Oct '10

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[libvirt] [PATCH 1/2] virsh: Add option 'model' for attach-interface
by Osier Yang 26 Oct '10

26 Oct '10

Allows to specify the NIC model type when attaching an interface, it's an optional option. --- tools/virsh.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 3e37b06..2da9489 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -8292,6 +8292,7 @@ static const vshCmdOptDef opts_attach_interface[] = { {"target", VSH_OT_DATA, 0, N_("target network name")}, {"mac", VSH_OT_DATA, 0, N_("MAC address")}, {"script", VSH_OT_DATA, 0, N_("script used to bridge network interface")}, + {"model", VSH_OT_DATA, 0, N_("model type")}, {"persistent", VSH_OT_BOOL, 0, N_("persist interface attachment")}, {NULL, 0, 0, NULL} }; @@ -8300,7 +8301,7 @@ static int cmdAttachInterface(vshControl *ctl, const vshCmd *cmd) { virDomainPtr dom = NULL; - char *mac, *target, *script, *type, *source; + char *mac, *target, *script, *type, *source, *model; int typ, ret = FALSE; unsigned int flags; virBuffer buf = VIR_BUFFER_INITIALIZER; @@ -8319,6 +8320,7 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd) target = vshCommandOptString(cmd, "target", NULL); mac = vshCommandOptString(cmd, "mac", NULL); script = vshCommandOptString(cmd, "script", NULL); + model = vshCommandOptString(cmd, "model", NULL); /* check interface type */ if (STREQ(type, "network")) { @@ -8345,6 +8347,8 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd) virBufferVSprintf(&buf, " <mac address='%s'/>\n", mac); if (script != NULL) virBufferVSprintf(&buf, " <script path='%s'/>\n", script); + if (model != NULL) + virBufferVSprintf(&buf, " <model type='%s'/>\n", model); virBufferAddLit(&buf, "</interface>\n"); -- 1.7.1

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[libvirt] [PATCH] Fix documentation for virEventAddTimeout()
by Philipp Hahn 26 Oct '10

26 Oct '10

Fix copy&paste error from virEventAddHandle(). Signed-off-by: Philipp Hahn <hahn(a)univention.de> --- src/util/event.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)

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[libvirt] --checksum-fill error on Ubuntu 10.04
by Justin Clift 26 Oct '10

26 Oct '10

Hi us, Just noticed an error message when manually starting libvirtd (built from git) on Ubuntu 10.04, while checking something else: iptables v1.4.4: unknown option `--checksum-fill' It shows up in the initial default network setup: 10:40:19.807: error : virRunWithHook:855 : internal error '/sbin/iptables --table mangle --insert POSTROUTING --out-interface virbr0 --protocol udp --destination-port 68 --jump CHECKSUM --checksum-fill' exited with non-zero status 2 and signal 0: iptables v1.4.4: unknown option `--checksum-fill' Try `iptables -h' or 'iptables --help' for more information. Just a FYI, in case someone wants to look into it. Regards and best wishes, Justin Clift

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Re: [libvirt] How to start a defined domain
by Osier 26 Oct '10

26 Oct '10

----- "黄亮" <lancerhuang(a)163.com> wrote: > I've create a domain called "vm01" using Virt-Manager, the GUI tool. > Now I wanna use libvirt api to control the life cycle of vm01. > It went on well with shutdown and reboot, but how to start it became a > problem. > > I was intended to get the virDomainPtr by using virDomainLookupByName > api, and then start it using virDomainCreate api. > But it turns out that virDomainLookupByName api cannot return a > virDomainPtr for a defined but not running domain. > no, it can :-) If it really doesn't work for you, could you write a simple program to reproduce it? and try to explain what's the version of libvirt you use, on which distro, etc, any helpful info is welcomed. :-) Thanks - Osier > That's my situation, what do you suggest I do now? > Thanks in advance. > > 2010-10-26 > > Lancer > -- > libvir-list mailing list > libvir-list(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvir-list

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[libvirt] How to start a defined domain
by 黄亮 26 Oct '10

26 Oct '10

I've create a domain called "vm01" using Virt-Manager, the GUI tool. Now I wanna use libvirt api to control the life cycle of vm01. It went on well with shutdown and reboot, but how to start it became a problem. I was intended to get the virDomainPtr by using virDomainLookupByName api, and then start it using virDomainCreate api. But it turns out that virDomainLookupByName api cannot return a virDomainPtr for a defined but not running domain. That's my situation, what do you suggest I do now? Thanks in advance. 2010-10-26 Lancer

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