June 2014 - Devel - libvirt List Archives

[libvirt] [Question] Collect vNode pinning to pNode run-time information
by Shi, Xiao-Lei (Bruce, HP Servers-PSC-CQ) 03 Jun '14

03 Jun '14

Hi all, I have a question about NUMA. User configured vNode(guest virtual numa node), but he didn't configure cputune and numatune. Now we want to get the information that each vNode run in which pNode(host numa node). It's run-time information that may be modified with high frequency. In current Libvirt's API, we can get the information that each vCpu running on which pCpu through virsh vcpuinfo(there should be a corresponding Libvirt API function). But we didn't find any APIs to get the information that each vNode uses which pNode's memory, or just each vCpu consumes which pNode's memory. We find a command "numastat -mcn -p qemu" that can get the memory consume data of each VM, but it still loses the information that we want(vNode memory consume data), as following: # numastat -mcn -p qemu Per-node process memory usage (in MBs) PID Node 0 Node 1 Total --------------- ------ ------ ----- 8900 (qemu-kvm) 2032 50 2083 17716 (qemu-kvm) 1546 663 2209 22484 (qemu-kvm) 621 1524 2146 29694 (qemu-kvm) 892 1350 2242 --------------- ------ ------ ----- Total 5092 3588 8680 ......... My question is: 1. In Libvirt, are there any ways that we can get our needed data? 2. If no ways in Libvirt, do you have any other suggestions to collect the information? Any feedbacks from you are appreciated. Thanks & Best Regards Shi, Xiao-Lei (Bruce) Hewlett-Packard Co., Ltd. HP Servers Core Platform Software China Telephone +86 23 65683093 Mobile +86 18696583447 Email xiao-lei.shi(a)hp.com<mailto:shiguo.li@hp.com>

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[libvirt] Is there a way to get host uptime in remote libvirt
by coffeeball 03 Jun '14

03 Jun '14

We manage hypervisors (VMWare ESXi/vCenter, KVM, XEN, Hyper-V) by remote Libvirt API, in our case we need to get the host uptime via the same libvirt interface. Is there a way get this info now for all the aforementioned hypervisor types? The APIs virConnectGetSysinfo(), virNodeGetInfo() provide host info but it doesn't include the system uptime. The virNodeGetCPUStats() can returns CPU usage in nanosecond, can we add the user + system + idle + iowait to calculate the system uptime? Looks like the sum value has a huge gap with the real uptime value returned by "uptime" CLI. virsh # nodecpustats user: 2985046540000000 system: 1368209710000000 idle: 388018933920000000 iowait: 43371960000000

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[libvirt] [PATCH] virsh-nodedev: Avoid spurious errors
by Michal Privoznik 03 Jun '14

03 Jun '14

Our public free functions explicitly don't accept NULL pointers (sigh). Therefore, callers must do something like this: if (dev) virNodeDeviceFree(dev); And we are not doing that on two places I've found. This leads to dummy error message thrown by virsh: virsh # nodedev-dumpxml nonexistent-device error: Could not find matching device 'nonexistent-device' error: invalid node device pointer in virNodeDeviceFree Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- tools/virsh-nodedev.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/virsh-nodedev.c b/tools/virsh-nodedev.c index a35387a..46e0045 100644 --- a/tools/virsh-nodedev.c +++ b/tools/virsh-nodedev.c @@ -162,7 +162,8 @@ cmdNodeDeviceDestroy(vshControl *ctl, const vshCmd *cmd) ret = true; cleanup: virStringFreeList(arr); - virNodeDeviceFree(dev); + if (dev) + virNodeDeviceFree(dev); return ret; } @@ -571,7 +572,8 @@ cmdNodeDeviceDumpXML(vshControl *ctl, const vshCmd *cmd) cleanup: virStringFreeList(arr); VIR_FREE(xml); - virNodeDeviceFree(device); + if (device) + virNodeDeviceFree(device); return ret; } -- 2.0.0

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[libvirt] [libvirt-php] libvirt_domain_new Create a slow vm
by Mario Di Ture 03 Jun '14

03 Jun '14

Hi, I've tested this script on centos 6.5 (libvirt-0.10.2, qemu-kvm-0.12.1.2) and ubuntu server 14.04 (libvirt 1.2.2, qemu-kvm 2.0.0) with the same result. The created vm is very slow compared to the vm created with virt-manager, with the same features/devices on the same host. Can you suggest any configuration that can avoid that slowness? With regards Mario D. <?php $conn = libvirt_connect('null', false); $name="testvm"; $arch="x86_64"; $memMB=1024; $maxmemMB=1536; $vcpus=1; $iso_image="/home/iso/CentOS-6.5-x86_64-minimal.iso"; $disk1 = array( "path" => "/home/vm/centos-script.raw", "driver" => "raw", "bus" => "virtio", "dev" => "hda", "size" => "6G", "flags" => VIR_DOMAIN_DISK_FILE | VIR_DOMAIN_DISK_ACCESS_ALL ); $disks = array( $disk1 ); $network1 = array( 'mac' => '00:11:22:33:44:55', 'network' => 'default', 'model' => 'e1000' ); $networks = array( $network1 ); $flags=VIR_DOMAIN_FLAG_FEATURE_ACPI; $newdom=libvirt_domain_new($conn, $name, $arch, $memMB, $maxmemMB, $vcpus, $iso_image, $disks, $networks, $flags); print_r($newdom); ?>

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[libvirt] parallels: add 2 functions needed by OpenStack
by Alexander Burluka 03 Jun '14

03 Jun '14

Hello, I would like to contribute in Libvirt development. Parallels team continues working on driver to make it compatible with OpenStack. So, this patches are part of our goal. I would gracefully accept your comments and remarks. Thank you! -- Regards, Alexander Burluka

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[libvirt] [PATCH] Don't use AI_ADDRCONFIG when binding to wildcard addresses
by Ján Tomko 03 Jun '14

03 Jun '14

https://bugzilla.redhat.com/show_bug.cgi?id=1098659 With parallel boot, network addresses might not yet be assigned [1], but binding to wildcard addresses should work. For non-wildcard addresses, ADDRCONFIG is still used. Document this in libvirtd.conf. [1] http://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/ --- daemon/libvirtd.conf | 4 ++++ src/rpc/virnetsocket.c | 28 ++++++++++++++++++++++++++-- 2 files changed, 30 insertions(+), 2 deletions(-) diff --git a/daemon/libvirtd.conf b/daemon/libvirtd.conf index aeba11d..e5856d4 100644 --- a/daemon/libvirtd.conf +++ b/daemon/libvirtd.conf @@ -48,6 +48,10 @@ # Override the default configuration which binds to all network # interfaces. This can be a numeric IPv4/6 address, or hostname # +# If the libvirtd service is started in parallel with network +# startup (e.g. with systemd), binding to addresses other than +# the wildcards (0.0.0.0/::) might not be available yet. +# #listen_addr = "192.168.0.1" diff --git a/src/rpc/virnetsocket.c b/src/rpc/virnetsocket.c index a7e1783..87b39f2 100644 --- a/src/rpc/virnetsocket.c +++ b/src/rpc/virnetsocket.c @@ -226,15 +226,29 @@ int virNetSocketNewListenTCP(const char *nodename, struct addrinfo hints; int fd = -1; size_t i; - int addrInUse = false; + bool addrInUse = false; + bool familyNotSupported = false; + virSocketAddr tmp_addr; *retsocks = NULL; *nretsocks = 0; memset(&hints, 0, sizeof(hints)); - hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG; + hints.ai_flags = AI_PASSIVE; hints.ai_socktype = SOCK_STREAM; + /* Don't use ADDRCONFIG for binding to the wildcard address. + * Just catch the error returned by socket() if the system has + * no IPv6 support. + * + * This allows libvirtd to be started in parallel with the network + * startup in most cases. + */ + if (nodename && + !(virSocketAddrParse(&tmp_addr, nodename, AF_UNSPEC) > 0 && + virSocketAddrIsWildcard(&tmp_addr))) + hints.ai_flags = AI_ADDRCONFIG; + int e = getaddrinfo(nodename, service, &hints, &ai); if (e != 0) { virReportError(VIR_ERR_SYSTEM_ERROR, @@ -251,6 +265,11 @@ int virNetSocketNewListenTCP(const char *nodename, if ((fd = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol)) < 0) { + if (errno == EAFNOSUPPORT) { + familyNotSupported = true; + runp = runp->ai_next; + continue; + } virReportSystemError(errno, "%s", _("Unable to create socket")); goto error; } @@ -307,6 +326,11 @@ int virNetSocketNewListenTCP(const char *nodename, fd = -1; } + if (nsocks == 0 && familyNotSupported) { + virReportSystemError(EAFNOSUPPORT, "%s", _("Unable to bind to port")); + goto error; + } + if (nsocks == 0 && addrInUse) { virReportSystemError(EADDRINUSE, "%s", _("Unable to bind to port")); -- 1.8.3.2

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[libvirt] [PATCH] leaseshelper: Include locale.h
by Michal Privoznik 03 Jun '14

03 Jun '14

The commit baafe668 introduces this new helper utility. As in all our programs, there's setlocale() called at the beginning of main(). However, this source file don't include locale.h file which causes build errors on some systems (e.g. mine). Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- src/network/leaseshelper.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/network/leaseshelper.c b/src/network/leaseshelper.c index e53a73c..eb695e4 100644 --- a/src/network/leaseshelper.c +++ b/src/network/leaseshelper.c @@ -28,6 +28,7 @@ #include <stdio.h> #include <stdlib.h> #include <sys/stat.h> +#include <locale.h> #include "virutil.h" #include "virthread.h" -- 2.0.0

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[libvirt] ANNOUNCE: Perl binding Sys-Virt release 1.2.5
by Daniel P. Berrange 03 Jun '14

03 Jun '14

I am pleased to announce that release 1.2.5 of Sys-Virt, the libvirt Perl API binding, is now available for download: http://search.cpan.org/CPAN/authors/id/D/DA/DANBERR/Sys-Virt-1.2.5.tar.gz Changed in the 1.2.5 release: - Add VIR_DOMAIN_{REBOOT,SHUTDOWN}_PARAVIRT constants - Add virDomainFSFreeze/virDomainFSThaw APIs - Add virDomainSetTime/virDomainGetTime APIs Further information, including online API documentation & previous release archives, is available from the CPAN home page http://search.cpan.org/dist/Sys-Virt/ Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|

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[libvirt] [PATCH 0/4] qemu: Some more device unplug fixes
by Jiri Denemark 03 Jun '14

03 Jun '14

This series depends on "qemu: Process DEVICE_DELETED event in a separate thread" series I sent yesterday. Jiri Denemark (4): qemu: Unref cfg when detaching hostdev interface qemu: Remove interface backend only after frontend is gone qemu: Remove disk backend only after frontend is gone qemu: Remove character device backend only after frontend is gone src/qemu/qemu_hotplug.c | 122 ++++++++++++++++++++++++------------------------ 1 file changed, 60 insertions(+), 62 deletions(-) -- 1.9.3

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[libvirt] [PATCH] Fix build on freebsd
by Pavel Hrdina 03 Jun '14

03 Jun '14

On freebsd there isn't known "setlocale" so we have to include locale.h Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com> --- Pushed under trivial rule src/network/leaseshelper.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/network/leaseshelper.c b/src/network/leaseshelper.c index e53a73c..b6f6c32 100644 --- a/src/network/leaseshelper.c +++ b/src/network/leaseshelper.c @@ -25,6 +25,7 @@ #include <config.h> +#include <locale.h> #include <stdio.h> #include <stdlib.h> #include <sys/stat.h> -- 1.8.5.5

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