December 2011 - Users - libvirt List Archives

[libvirt-users] tmpfs mounts for lxc container
by Chris Haumesser 08 Dec '11

08 Dec '11

I intend to share a single read-only filesystem root among a number of LXC containers. With lxc-tools, I can specify tmpfs bind mounts within the container, for directories that need to be writable, like /var/run and /var/lock. Is there a simple way to do this with libvirt, or do I need to mount the tmpfs in the host first, and specify it as a filesystem in the xml? Cheers, -C-

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[libvirt-users] lxc errors on 0.9.7
by Chris Haumesser 08 Dec '11

08 Dec '11

I'm testing 0.9.7 now with lxc, and get the following error when trying to start a container: 2011-12-07 22:49:26.293: 1997: error : lxcControllerRun:1158 : unsupported configuration: Expected exactly one TTY fd My configuration is very simply: hw 38320e75-1ba0-d85a-6138-532a3a66f13d 102400 102400 1 exe /bin/bash destroy restart destroy /usr/lib/libvirt/libvirt_lxc If I try to add any different type of console, I get an error that only pty consoles are supported. What am I missing? -C-

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[libvirt-users] Custom firewall rules
by Hansa 08 Dec '11

08 Dec '11

Hi, Normally Im using webmin to manage my firewall. Webmin fw however breaks the iptable rules invoked by libvirt. Is there a fw tool (beside iptables console command) which can be used without breaking libvirts rules? -Hansa

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[libvirt-users] libvirt and LXC
by Ivars Strazdiņš 05 Dec '11

05 Dec '11

Hi there, I'm fairly new to libvirt and LXC, please forgive my ignorance. I was looking for a graphical tool to manage LXC containers and noticed that libvirt has support for LXC. Actually, I expected libvirt to be able to display and manage LXC hosts much like KVM. But it does not happen this way. The only thing I can see with virsh/virt-manager is storage pool with LXC containers, but not much else. No information on running/stopped containers or networking. libvirt is 0.9.7 on both LXC server and client I use to connect to the server. I use lxc+ssh for connection. Am I missing something obvious here? Some configuration file? libvirt documentation does not mention any. Kind regards, Ivars

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[libvirt-users] virt-manager / libvirtd connection options
by Shaun Glass 05 Dec '11

05 Dec '11

Good Day, I had previously posted an issue last week where I had qemu/kvm running on RHEL 6.1 and could not create any vm's when connecting from virt-manager running on another machine. Seems virt-manager checks the host it is running on for the capability of creating vm's as opposed to the machine it has connected to. Nobody could give me an answer to why that happens or how to fix. I have in the meantime setup convirture on the RHEL 6.1 machine but would prefer to use virt-manager. Can anyone offer any suggestions to what is the best way to connect from a remote client to the RHEL 6.1 machine running qemu/kvm. The method I was trying to use was ssh with publickey login. Regards

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Re: [libvirt-users] Can I configure cores instead of CPU's
by Todd And Margo Chester 05 Dec '11

05 Dec '11

> On 3/12/2011 9:53 AM, Todd And Margo Chester wrote: >>> -------- Original message -------- >>> Subject: Re: [libvirt-users] Can I configure cores instead of CPU's >>> From: Todd And Margo Chester<toddandmargo(a)gmail.com> >>> To: "libvirt-users(a)redhat.com"<libvirt-users(a)redhat.com> >>> CC: >>> >>> >>> Hi All, >>> >>> Scientific Linux 6.1 x64 >>> qemu-kvm-0.12.1.2-2.160.el6_1.2.x86_64 >>> >>> My XP-Pro guest will only let me use two CPUs. >>> Is there a way I can tell Virt-Manager to use >>> one CPU with six cores instead of four separate >>> CPUs? >>> >>> I can manually insert things with >>> virsh edit KVM-WinXP >>> >>> Currently, I have: >>> <vcpu>6</vcpu> >>> >>> I found an example of a run string: >>> >>> -smp 2,sockets=2,cores=1,threads=1 >>> >>> But I will be darned if I can figure out the virsh xml syntax. >>> >>> Many thanks, >>> -T >> On 12/02/2011 05:32 PM, Frank Hauptle wrote: >> > Yes under advanced in cpu in virt manager are socket /core >> > settings. i use a fedora virt manager to connect to sl61 >> > libvirt. more options that way. >> >> >> I configured my processor in virt-mamager: >> >> CPU's: Current Allocation: 2 >> Manual set CPU Topology: >> Sockets: 1 >> Cores: 6 >> Threads: 1 >> >> or from my XML file >> >> <vcpu>1</vcpu> >> <cpu> >> <topology sockets='1' cores='6' threads='1'/> >> </cpu> >> >> I still get two CPUs in my guest XP-Pro. >> >> What am I doing wrong? >> >> -T On 12/03/2011 07:40 PM, Frank Hauptle wrote: >I'm not even sure XP could differentiate > between a core and a socket as multicore CPU's were not common to x86 in > 2000 when XP was released. > > If you want to see if it really worked, download a knoppix CD and mount > the ISO in the CDrom of that > VM, then set it to boot from the CDROM. > > When knoppix boots up, open a terminal and type: > > cat /proc/cpuinfo > > See what it gives you. > > I think the hardware info GUI app in knoppix will give you more info too. > > cheers > > > Frank Hi Frank, Don't have knoppix, but do have FC16-Live-CD. The rules for CPU count in XP-Pro are as follows: the physically chip that you install on your motherboard is referred to by M$ as a CPU. XP-Pro will only allow up to two CPUs. Each physical CPU may have as many processors on it as will fit. M$ calls these processors "cores". XP-Pro does not limit cores as long as they do not span more than two CPU's. My host machine has one CPU and four cores (eight if you consider the hyperthreading). KVM is presenting my XP-Pro guest multiple CPUs, not cores. XP will not use more than two CPUs by design. What I am after is a way to have KVM present my guest one CPU with four cores. Not four independent CPUs. I have attached /proc/cpuinfo from Fedora Core 16 guest, along with my /proc/cpuinfo from my host. What am I doing wrong? Many thanks, -T ---->> cat /proc/cpuinfo from FC16 Guest: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : QEMU Virtual CPU version (cpu64-rhel6) stepping : 3 cpu MHz : 3067.098 cache size : 4096 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 hypervisor lahf_lm bogomips : 6134.19 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : QEMU Virtual CPU version (cpu64-rhel6) stepping : 3 cpu MHz : 3067.098 cache size : 4096 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 hypervisor lahf_lm bogomips : 6134.19 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : QEMU Virtual CPU version (cpu64-rhel6) stepping : 3 cpu MHz : 3067.098 cache size : 4096 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 hypervisor lahf_lm bogomips : 6134.19 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : QEMU Virtual CPU version (cpu64-rhel6) stepping : 3 cpu MHz : 3067.098 cache size : 4096 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 hypervisor lahf_lm bogomips : 6134.19 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ---->> cat /proc/cpuinfo from Local Host (i7-960) processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 6134.19 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 1 cpu cores : 4 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 6132.39 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 2 cpu cores : 4 apicid : 4 initial apicid : 4 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 6132.40 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 3 cpu cores : 4 apicid : 6 initial apicid : 6 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 6132.39 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 4 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 4 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 6132.38 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 5 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 1 cpu cores : 4 apicid : 3 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 6132.39 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 6 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 2 cpu cores : 4 apicid : 5 initial apicid : 5 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 6132.39 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 7 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz stepping : 5 cpu MHz : 1600.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 3 cpu cores : 4 apicid : 7 initial apicid : 7 fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips : 6132.39 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management:

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Re: [libvirt-users] Can I configure cores instead of CPU's
by Todd And Margo Chester 04 Dec '11

04 Dec '11

> On 3/12/2011 9:53 AM, Todd And Margo Chester wrote: >>> -------- Original message -------- >>> Subject: Re: [libvirt-users] Can I configure cores instead of CPU's >>> From: Todd And Margo Chester<toddandmargo(a)gmail.com> >>> To: "libvirt-users(a)redhat.com"<libvirt-users(a)redhat.com> >>> CC: >>> >>> >>> Hi All, >>> >>> Scientific Linux 6.1 x64 >>> qemu-kvm-0.12.1.2-2.160.el6_1.2.x86_64 >>> >>> My XP-Pro guest will only let me use two CPUs. >>> Is there a way I can tell Virt-Manager to use >>> one CPU with six cores instead of four separate >>> CPUs? >>> >>> I can manually insert things with >>> virsh edit KVM-WinXP >>> >>> Currently, I have: >>> <vcpu>6</vcpu> >>> >>> I found an example of a run string: >>> >>> -smp 2,sockets=2,cores=1,threads=1 >>> >>> But I will be darned if I can figure out the virsh xml syntax. >>> >>> Many thanks, >>> -T >> On 12/02/2011 05:32 PM, Frank Hauptle wrote: >> > Yes under advanced in cpu in virt manager are socket /core >> > settings. i use a fedora virt manager to connect to sl61 >> > libvirt. more options that way. >> >> >> I configured my processor in virt-mamager: >> >> CPU's: Current Allocation: 2 >> Manual set CPU Topology: >> Sockets: 1 >> Cores: 6 >> Threads: 1 >> >> or from my XML file >> >> <vcpu>1</vcpu> >> <cpu> >> <topology sockets='1' cores='6' threads='1'/> >> </cpu> >> >> I still get two CPUs in my guest XP-Pro. >> >> What am I doing wrong? >> >> -T On 12/03/2011 07:40 PM, Frank Hauptle wrote: > I'm not even sure XP could differentiate > between a core and a socket as multicore CPU's were not common to x86 in > 2000 when XP was released. > > If you want to see if it really worked, download a knoppix CD and mount > the ISO in the CDrom of that > VM, then set it to boot from the CDROM. > > When knoppix boots up, open a terminal and type: > > cat /proc/cpuinfo > > See what it gives you. > > I think the hardware info GUI app in knoppix will give you more info too. > > cheers > > > Frank Hi Frank, I have FC16 live CD as a guest. /proc/cpuinfo said I had four cpu's. Given a bit of time I can give you the full report if that would help. My host CPU is an i7-960 (four real cores, eight hyperthreaded cores.) -T

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Re: [libvirt-users] Can I configure cores instead of CPU's
by Todd And Margo Chester 03 Dec '11

03 Dec '11

> -------- Original message -------- > Subject: Re: [libvirt-users] Can I configure cores instead of CPU's > From: Todd And Margo Chester <toddandmargo(a)gmail.com> > To: "libvirt-users(a)redhat.com" <libvirt-users(a)redhat.com> > CC: > > > Hi All, > > Scientific Linux 6.1 x64 > qemu-kvm-0.12.1.2-2.160.el6_1.2.x86_64 > > My XP-Pro guest will only let me use two CPUs. > Is there a way I can tell Virt-Manager to use > one CPU with six cores instead of four separate > CPUs? > > I can manually insert things with > virsh edit KVM-WinXP > > Currently, I have: > <vcpu>6</vcpu> > > I found an example of a run string: > > -smp 2,sockets=2,cores=1,threads=1 > > But I will be darned if I can figure out the virsh xml syntax. > > Many thanks, > -T On 12/02/2011 05:32 PM, Frank Hauptle wrote: > Yes under advanced in cpu in virt manager are socket /core > settings. i use a fedora virt manager to connect to sl61 > libvirt. more options that way. I configured my processor in virt-mamager: CPU's: Current Allocation: 2 Manual set CPU Topology: Sockets: 1 Cores: 6 Threads: 1 or from my XML file <vcpu>1</vcpu> <cpu> <topology sockets='1' cores='6' threads='1'/> </cpu> I still get two CPUs in my guest XP-Pro. What am I doing wrong? -T

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Re: [libvirt-users] Can I configure cores instead of CPU's
by Todd And Margo Chester 03 Dec '11

03 Dec '11

Hi All, Scientific Linux 6.1 x64 qemu-kvm-0.12.1.2-2.160.el6_1.2.x86_64 My XP-Pro guest will only let me use two CPUs. Is there a way I can tell Virt-Manager to use one CPU with six cores instead of four separate CPUs? I can manually insert things with virsh edit KVM-WinXP Currently, I have: <vcpu>6</vcpu> I found an example of a run string: -smp 2,sockets=2,cores=1,threads=1 But I will be darned if I can figure out the virsh xml syntax. Many thanks, -T

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