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[Libvir] testing libvirtd: don't hard-code $HOME/.libvirt/libvirt-sock
by Jim Meyering 03 Dec '07

03 Dec '07

I've written a test to exercise libvirtd a little. Unfortunately, if I'm already running libvirtd, that test fails and I can't do anything about it: $ ./libvirtd & ./libvirtd Failed to bind socket to '@/j/.libvirt/libvirt-sock': Address already in use [Exit 2] Any objection to providing an option to libvirtd that specifies that directory (also used to form server->logDir)? It feels like it should come from the config file, but I haven't looked at details yet.

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[Libvir] Semantic of xenUnifiedType()
by Daniel Veillard 03 Dec '07

03 Dec '07

It does the following: static const char * xenUnifiedType (virConnectPtr conn) { GET_PRIVATE(conn); int i; const char *ret; for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i) if (priv->opened[i] && drivers[i]->type) { ret = drivers[i]->type (conn); if (ret) return ret; } return NULL; } as a result if running as an user virConnectGetType() returns "XenXM" because the XM file parser backend ended up being registered first. I think that's bogus and we should change the function to return "Xen" in any case and drop the virDrvGetType type from struct xenUnifiedDriver and all associated functions in the various back-ends. Opinion ? 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/

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[Libvir] [PATCH 0/3] More misc patches to improve Windows support
by Richard W.M. Jones 30 Nov '07

30 Nov '07

There follows some miscellaneous patches to configure.in and the Makefile.am's to improve Windows support. I'll explain each in the follow-ups. 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] Create domU without any disks
by Tim Verhoeven 29 Nov '07

29 Nov '07

Hi, I'm working on RHEL5.1 (libvirt-0.2.3-9.el5). I would like to know if it is possible, using libvirt, to create a Xen PVM domU that has no disks? And if this is possible how to code this ( a simple example is ok). I can create a configfile for "xm create ..." that works (just use "disk = [ ]"). But I also need to do this koan (companion to cobbler) and it uses libvirt. Thanks, Tim -- Tim Verhoeven - tim.verhoeven.be(a)gmail.com - 0479 / 88 11 83 Hoping the problem magically goes away by ignoring it is the "microsoft approach to programming" and should never be allowed. (Linus Torvalds)

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[Libvir] libvirt on Windows - now supports DLLs and Python
by Richard W.M. Jones 29 Nov '07

29 Nov '07

With the latest patch to libvirt, Windows now supports building the libvirt.dll/cygvirt.dll DLL and the Python bindings now work too. http://libvirt.org/windows.html ftp://libvirt.org/libvirt/win32 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] Building libvirt-0.3.3 on CentOS4
by Carl Jones 29 Nov '07

29 Nov '07

Richard W.M. Jones wrote: > Daniel P. Berrange wrote: >> On Wed, Nov 28, 2007 at 01:25:41PM +1300, Carl Jones wrote: >>> Hi, >>> >>> I'm trying to build libvirt-0.3.3 on a CentOS4 machine. But I'm >>> hitting this error while running 'make': >>> >>> ./configure --with-init-script=redhat --without-qemu --without-remote >>> --without-test --with-xen --without-openvz --without-avahi >>> [...] >>> make[2]: Entering directory `/usr/src/redhat/SOURCES/libvirt-0.3.3/src' >>> gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../qemud >>> -I/usr/include/libxml2 -DBINDIR=\""/usr/local/libexec"\" >>> -DSBINDIR=\""/usr/local/sbin"\" -DSYSCONF_DIR="\"/usr/local/etc\"" >>> -DLOCALEBASEDIR=\""/usr/local/share/locale"\" >>> -DLOCAL_STATE_DIR=\""/usr/local/var"\" -DGETTEXT_PACKAGE=\"libvirt\" >>> -Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra >>> -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return >>> -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare >>> -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables >>> -DWITH_XEN -g -O2 -MT virsh-virsh.o -MD -MP -MF >>> .deps/virsh-virsh.Tpo -c -o virsh-virsh.o `test -f 'virsh.c' || echo >>> './'`virsh.c >>> virsh.c: In function `vshOutputLogFile': >>> virsh.c:4577: warning: implicit declaration of function `localtime' >>> virsh.c:4577: warning: nested extern declaration of `localtime' >>> virsh.c:4577: warning: assignment makes pointer from integer without >>> a cast >> >> Looks like its missing an '#include <time.h>' statement from virsh.c > > Carl, can you let us know if adding that include line fixes it for you? > If so I'll make the change in CVS. > > Rich. After adding that include, it compiles and works nicely. Thanks. Regards, Carl

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[Libvir] Building libvirt-0.3.3 on CentOS4
by Carl Jones 28 Nov '07

28 Nov '07

Hi, I'm trying to build libvirt-0.3.3 on a CentOS4 machine. But I'm hitting this error while running 'make': ./configure --with-init-script=redhat --without-qemu --without-remote --without-test --with-xen --without-openvz --without-avahi [...] make[2]: Entering directory `/usr/src/redhat/SOURCES/libvirt-0.3.3/src' gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../qemud -I/usr/include/libxml2 -DBINDIR=\""/usr/local/libexec"\" -DSBINDIR=\""/usr/local/sbin"\" -DSYSCONF_DIR="\"/usr/local/etc\"" -DLOCALEBASEDIR=\""/usr/local/share/locale"\" -DLOCAL_STATE_DIR=\""/usr/local/var"\" -DGETTEXT_PACKAGE=\"libvirt\" -Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables -DWITH_XEN -g -O2 -MT virsh-virsh.o -MD -MP -MF .deps/virsh-virsh.Tpo -c -o virsh-virsh.o `test -f 'virsh.c' || echo './'`virsh.c virsh.c: In function `vshOutputLogFile': virsh.c:4577: warning: implicit declaration of function `localtime' virsh.c:4577: warning: nested extern declaration of `localtime' virsh.c:4577: warning: assignment makes pointer from integer without a cast virsh.c:4578: error: dereferencing pointer to incomplete type virsh.c:4578: error: dereferencing pointer to incomplete type virsh.c:4578: error: dereferencing pointer to incomplete type virsh.c:4578: error: dereferencing pointer to incomplete type virsh.c:4578: error: dereferencing pointer to incomplete type virsh.c:4578: error: dereferencing pointer to incomplete type make[2]: *** [virsh-virsh.o] Error 1 make[2]: Leaving directory `/usr/src/redhat/SOURCES/libvirt-0.3.3/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/usr/src/redhat/SOURCES/libvirt-0.3.3' make: *** [all] Error 2 I've tried building from CVS, but that fails also (different issue). Any ideas? I've grabbed the newer gnutls from CentOS5, and other dependencies are already installed. Regards, Carl

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[Libvir] libvirt: serving to web interface (swarm idea!)
by Grabber 28 Nov '07

28 Nov '07

Yeah, I'm focused to develop a decente web interface to manage Xen using libvirt. I have some ideas for the interface, can anyone help me saying: this is cool, this doesn't work?! The main idea for migrate virtual machines is use the swarm concept (you can look it at: http://www.jasoncoleman.net/images/Azureus_Swarm.png) can this be usable? For more informations about the project see: http://code.google.com/p/xenonrails/ (I'm starting this today ;) ) -- Regards, Luiz Vitor Martinez Cardoso [Grabber]. (11) 8187-8662 Student of Eletrical Engineer at maua.br

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[Libvir] [PATCH] BZ#251641: Allow to change the cpu pinning for inactive domain
by Saori Fukuta 28 Nov '07

28 Nov '07

Hi, I want to change the cpu pinning for inactive domain on RHEL-5.1. So, I just add the xenXMDomainPinVcpu to xm_internal.c. We will be allowed to change "cpus" parameter in configuration file with "vcpupin" command by this patch, like "setmem" or "setvcpus". There is 2 things to note: - This is an effective feature for inactive domain with Xen3.0.3 (less than 3 of xendConfigVersion). - On the above environment, the number which specified as <vcpu> is ignored, because the virtual CPUs is not present when domain is shut off. So, when executing "vcpupin" command with this option # virsh vcpupin Guest 0 1 "0"(vcpu) is ignored and "1"(cpulist) is set to configuration file as "cpus". # cat /etc/xen/Guest | grep cpus cpus = "1" Regards, Saori Fukuta

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[Libvir] [PATCH] (vshCloseLogFile): Diagnose close/write failure.
by Jim Meyering 28 Nov '07

28 Nov '07

I noticed a minor problem in vshCloseLogFile. Although callers do check for log-file write failure, this function doesn't check for close failure (which can happen, and indicates a write failure). I considered changing the function to return an int and propagating that success/failure "up" to callers, but that change is more invasive, and I'm not sure it's desirable. If any of you prefer it, let me know and I'll rewrite accordingly: Also slightly ugly: ctl->logfile may be null, so if/when it is (however unlikely), the diagnostic prints "?" as the file name rather than trying to dereference a NULL pointer. * src/virsh.c (vshCloseLogFile): Diagnose close/write failure. --- src/virsh.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/src/virsh.c b/src/virsh.c index 5b50524..86f5b8b 100644 --- a/src/virsh.c +++ b/src/virsh.c @@ -4643,7 +4643,9 @@ vshCloseLogFile(vshControl *ctl) { /* log file close */ if (ctl->log_fd >= 0) { - close(ctl->log_fd); + if (close(ctl->log_fd) < 0) + vshError(ctl, FALSE, _("%s: failed to write log file: %s") + ctl->logfile ? ctl->logfile : "?", strerror (errno)); ctl->log_fd = -1; } -- 1.5.3.6.961.gecf4

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