March 2014 - Users - libvirt List Archives

[libvirt-users] 'virsh capabilities' on Debian Wheezy-amd64 reports different cpu to Wheezy-i386 (on same hardware)
by Struan Bartlett 03 Mar '14

03 Mar '14

Hi On a range of Dell servers containing Intel 64bit processors, 'virsh capabilities' reports the cpu differently on Debian Wheezy-amd64 and Wheezy-i386. The results given by the Wheezy-i386 version seem very wrong (since n270 is an Atom processor). Apart from architecture, the package versions of libvirt-bin are identical: 1.2.1-1~bpo70+1. /usr/share/libvirt/cpu_map.xml files are identical. Is this a known issue? Details for one server are: # cat /proc/cpuinfo| head -n 26 processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 45 model name : Intel(R) Xeon(R) CPU E5-2650L 0 @ 1.80GHz stepping : 7 microcode : 0x70d cpu MHz : 1800.054 cache size : 20480 KB physical id : 0 siblings : 16 core id : 0 cpu cores : 8 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 3600.10 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: ... </proc/cpuinfo for processors 1..31 snipped here for brevity> # Running Wheezy-amd64 libvirt-bin1.2.1-1~bpo70+1 # virsh capabilities <cpu> <arch>x86_64</arch> <model>SandyBridge</model> <vendor>Intel</vendor> <topology sockets='2' cores='8' threads='2'/> <feature name='pdpe1gb'/> <feature name='osxsave'/> <feature name='dca'/> <feature name='pcid'/> <feature name='pdcm'/> <feature name='xtpr'/> <feature name='tm2'/> <feature name='est'/> <feature name='smx'/> <feature name='vmx'/> <feature name='ds_cpl'/> <feature name='monitor'/> <feature name='dtes64'/> <feature name='pbe'/> <feature name='tm'/> <feature name='ht'/> <feature name='ss'/> <feature name='acpi'/> <feature name='ds'/> <feature name='vme'/> </cpu> # Running Wheezy-i386 libvirt-bin1.2.1-1~bpo70+1 # virsh capabilities <cpu> <arch>x86_64</arch> <model>n270</model> <vendor>Intel</vendor> <topology sockets='2' cores='8' threads='2'/> <feature name='lahf_lm'/> <feature name='lm'/> <feature name='rdtscp'/> <feature name='pdpe1gb'/> <feature name='avx'/> <feature name='osxsave'/> <feature name='xsave'/> <feature name='aes'/> <feature name='tsc-deadline'/> <feature name='popcnt'/> <feature name='x2apic'/> <feature name='sse4.2'/> <feature name='sse4.1'/> <feature name='dca'/> <feature name='pcid'/> <feature name='pdcm'/> <feature name='xtpr'/> <feature name='cx16'/> <feature name='tm2'/> <feature name='est'/> <feature name='smx'/> <feature name='vmx'/> <feature name='ds_cpl'/> <feature name='dtes64'/> <feature name='pclmuldq'/> <feature name='pbe'/> <feature name='tm'/> <feature name='ht'/> <feature name='ss'/> <feature name='acpi'/> <feature name='ds'/> <feature name='pse36'/> </cpu> Kind regards Struan Bartlett -- Struan Bartlett NewsNow Publishing Limited Tel: +44 (0)845 838 8890 Fax: +44 (0)845 838 8898 The UK's #1 News Portal: > www.NewsNow.co.uk <http://www.NewsNow.co.uk> (est. 1998) Also tailored for Mobile: > mobile.NewsNow.co.uk <http://mobile.NewsNow.co.uk/> Now with FREE Personalisation: > Register <http://www.NewsNow.co.uk/register/> Bespoke B2B Internet News Monitoring: > Internet News Monitoring <http://www.newsnow.co.uk/services/newsmonitoring/> Bespoke B2B Headlines for Websites: > Editorial-In-A-Box <http://www.newsnow.co.uk/services/websites/> NewsNow Publishing Limited, trading also as NewsNow.co.uk, is a company registered in England and Wales under company no. 3435857 with registered office The Euston Office, 1 Euston Square, 40 Melton Street, London NW1 2FD

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[libvirt-users] Set a domain name instead of an ip address into tls certificate
by Pasquale Dir 03 Mar '14

03 Mar '14

I tried to set cn=myMachine instead of cn=192.168.1.x and...everything frezees! virsh -c qemu://.../system tries to connect forever. You really need static ip addresses in the cn field?? I think this is an HUGE bug: you are saying to me that each time I change network or ip (because, dear sirs, dhcp exists) I have to generate a whole new couple of certificates?? I hope it is not the case.... regards Pasquale

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[libvirt-users] What is the best virtual network for my case?
by Pasquale Dir 01 Mar '14

01 Mar '14

I have an openvswitch switch controlled by a controller. I want to have a group of virtual machines which can be on different nodes but sharing the same ip address thus having the illusion of being on the same network. So, each vm I start gets an ip (I was thinking about something like 192.168.y.x 255.255.0.0 where y would be the node and x the vm, this way each node can have its own dhcp server) which is virtual and belongs to the same network of the others. Throught openvswitch I would take care of the communication between different machines if they belong to different phisical networks. So, what is the best network configuration according to you?

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