July 2008 - Devel - libvirt List Archives

[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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[libvirt] [PATCH] Detailed XML errors version 4
by Richard W.M. Jones 01 Aug '08

01 Aug '08

Updated to report only the first error, as suggested by Dan. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v

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[libvirt] listing domains on Fedora 8 XEN kernel
by Steve Oliphant 31 Jul '08

31 Jul '08

I am having a problem being able to get domain information in an Fedora 8 XEN environment.The code does not receive an error status on the XEN kernel and does not get any information. The same code running on the non XEN kernel works fine. I am running default configuration files. Is this a known issue? Do I need to tweak the configuration files? Is there anything else I need to do get the code to work on the XEN kernel? Please point me in the right direction. If any other information is required to assist in answering my question, please let me know. Thank you in advance for your help. Steven Oliphant Software installed: rpm -qa | grep kernel kernel-headers-2.6.25.9-40.fc8 kernel-devel-2.6.23.1-42.fc8 kernel-2.6.23.1-42.fc8 kernel-xen-2.6.21-2950.fc8 kernel-2.6.25.9-40.fc8 kernel-devel-2.6.25.9-40.fc8 kernel-xen-2.6.21.7-3.fc8 rpm -qa | grep xen xen-devel-3.1.2-2.fc8 xenwatch-0.5.2-2.fc8 kernel-xen-2.6.21-2950.fc8 xen-debuginfo-3.1.2-2.fc8 kernel-xen-2.6.21.7-3.fc8 xen-libs-3.1.2-2.fc8 xen-3.1.2-2.fc8 rpm -qa | grep virt libvirt-devel-0.4.4-1.fc8 ruby-libvirt-0.0.7-1.fc8 libvirt-python-0.4.4-1.fc8 python-virtinst-0.300.2-4.fc8 virt-manager-0.5.3-2.fc8 libvirt-debuginfo-0.4.4-1.fc8 libvirt-0.4.4-1.fc8 Non XEN kernel: uname -a Linux steve-1.verizon.net 2.6.25.9-40.fc8 #1 SMP Fri Jun 27 16:25:53 EDT 2008 i686 athlon i386 GNU/Linux XEN kernel uname -a Linux steve-1.verizon.net 2.6.21.7-3.fc8xen #1 SMP Thu Mar 20 14:57:53 EDT 2008 i686 athlon i386 GNU/Linux Code sample: #include <stdio.h> #include <libvirt/libvirt.h> #define DOMAIN_COUNT 10 /** * getInfo: * * extract the virtual machine information */ static void getInfo(void) { virConnectPtr conn = NULL; /* the hypervisor connection */ virDomainPtr dom = NULL; /* the domain being checked */ int ret; int id; int i, j, k, ids[DOMAIN_COUNT]; char *names[DOMAIN_COUNT]; /* NULL means connect to local Xen hypervisor */ conn = virConnectOpen(NULL); if (conn == NULL) { fprintf(stderr, "Failed to connect to hypervisor\n"); goto error; } /* Get the active domain list */ i = virConnectListDomains(conn, &ids[0], DOMAIN_COUNT); if (i < 0) { fprintf(stderr, "Failed to list the domains\n"); goto error; } for (j = 0;j < i;j++) { if (ids[j] != 0) { id = ids[j]; fprintf(stdout, "Active Domain: %d\n", id); /* Get the information */ } } /* Get defined Domain Names */ ret = virConnectListDefinedDomains (conn, names, DOMAIN_COUNT); if (ret < 0) { fprintf(stderr, "Failed to get Domain Names\n"); goto error; } for (k = 0;k < ret;k++) { printf("Inactive Domain Name: %s\n", names[k]); } error: if (dom != NULL) virDomainFree(dom); if (conn != NULL) virConnectClose(conn); } int main() { getInfo(); return(0); }

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[libvirt] what ever happened to the SCSI HBA storage backend?
by David Lively 31 Jul '08

31 Jul '08

Hi Folks - I see Daniel Berrange submitted a SCSI HBA storage backend in March. What ever happened to that? I'd be happy to pick this up if there's more work to do (is there a code base later than the posted patch?) In the longer run, I'm looking towards adding support necessary for FC environments (like multipath). Also, it seems (to my iSCSI-ignorant mind) that iSCSI should be just another flavor of the SCSI driver (kind of like netfs is a flavor of the fs driver ...). Is anyone working on such a refactoring? Thanks, Dave

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[libvirt] [PATCH] fix compilation for MinGW (with LXC)
by Atsushi SAKAI 31 Jul '08

31 Jul '08

Hello, Dan Smith May I commit this patch for MinGW compilation? veth.c is not necessary for MinGW. Thanks Atsushi SAKAI

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[libvirt] [PATCH] Detailed XML errors using the _private field
by Richard W.M. Jones 30 Jul '08

30 Jul '08

Here is a patch which uses the _private field to store the virConnectPtr. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v

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[libvirt] [PATCH 0/2] Detailed XML errors (with thread-local storage this time)
by Richard W.M. Jones 30 Jul '08

30 Jul '08

I've just seen Daniel Veillard's message about the '_private' field. In the meantime here is a solution using thread-local storage implemented on top of pthreads, which may be of interest. 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] PATCH: Validate all test suite XML files against schema
by Daniel P. Berrange 30 Jul '08

30 Jul '08

After frequent prompting from John I've implemented a small test case to validate all the domain XML files we have in the test suite against the defined RNG schema. This showed one minor bug in the schema :-) Daniel diff -r c44225477420 docs/libvirt.rng --- a/docs/libvirt.rng Wed Jul 30 14:20:38 2008 +0100 +++ b/docs/libvirt.rng Wed Jul 30 16:17:19 2008 +0100 @@ -141,6 +141,7 @@ </attribute> <attribute name='machine'> <choice> + <value>xenfv</value> <value>pc</value> <value>isapc</value> </choice> diff -r c44225477420 tests/Makefile.am --- a/tests/Makefile.am Wed Jul 30 14:20:38 2008 +0100 +++ b/tests/Makefile.am Wed Jul 30 16:17:19 2008 +0100 @@ -37,13 +37,14 @@ test-lib.sh \ xmlrpcserver.py \ qemuxml2argvdata \ - nodeinfodata + nodeinfodata \ + domainschematest noinst_PROGRAMS = xmlrpctest xml2sexprtest sexpr2xmltest virshtest conftest \ reconnect xmconfigtest xencapstest qemuxml2argvtest qemuxml2xmltest \ nodeinfotest statstest qparamtest -test_scripts = +test_scripts = domainschematest if WITH_LIBVIRTD test_scripts += \ test_conf.sh \ diff -r c44225477420 tests/domainschematest --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tests/domainschematest Wed Jul 30 16:17:19 2008 +0100 @@ -0,0 +1,32 @@ +#!/bin/sh + +test -z "$srcdir" && srcdir=`pwd` + +DOMAINDIRS="qemuxml2argvdata sexpr2xmldata xmconfigdata xml2sexprdata" + +n=0 +f=0 +for dir in $DOMAINDIRS +do + XML=`find $dir -name '*.xml'` + + for xml in $XML + do + n=`expr $n + 1` + printf "%4d) %-60s " $n $xml + result=`xmllint --relaxng $srcdir/../docs/libvirt.rng --noout $xml 2>&1` + ret=$? + if test $ret = 0; then + echo "OK" + else + echo "FAILED" + echo $result + f=`expr $f + 1` + fi + done +done +echo "Validated $n files, $f failed" + +ret=0 +test $f != 0 && ret=255 +exit $ret -- |: 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] Detailed XML errors when XML is not well-formed
by Richard W.M. Jones 30 Jul '08

30 Jul '08

This patch changes the implementations lots of functions which parse XML documents, so that if the XML document is not well-formed then we get detailed error messages. The general form of the change is: static void catchXMLError (void *ctx, const char *msg ATTRIBUTE_UNUSED, ...) { // a callback which calls virDomainReportError } virDomainDefPtr virDomainDefParseString(virConnectPtr conn, virCapsPtr caps, const char *xmlStr) { xmlParserCtxtPtr pctxt; pctxt = xmlNewParserCtxt (); pctxt->sax->error = catchXMLError; xml = xmlCtxtReadDoc (pctxt, //...) etc. There are some unavoidable shortcomings: (1) There is no place to stash user pointers during the callback (the suggestively named pctxt->userData field is already used for something else), so we cannot pass the virConnectPtr to the error function. As a result, virterror will store the error in a global variable, and callers will probably not be able to access it. (2) The XML parser routinely produces multiple error messages, and virterror throws away all but the last one. The errors do, however, get printed to stderr. You can test this by using 'virsh define', 'virsh net-define', 'virsh pool-define', etc. on not-well-formed XML files. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v

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