[libvirt-users] issue with kvm host crashing
I have a dell r910 with rhel6.2 on it and libvirt 0.8. This machine is hosting 12 virtual guests. Every 3 - 5 months the server crashes for no apparent reason. The logs show no kernel panics or other issues causing the crash. The sar logs show a very high context switch count ( approx. 17). and also high runq-sz (approx. 10 - 18). The cpu's were mostly idle, memory usage low, no swapping, disk io very low as well. This also occurs on a number of other rhel6.2 servers I have using KVM/libvirt/qemu for virtualization. I am curious if anyone else has reported incidents like this. After the crash the servers all come backup, but as you can imagine, it is troubling to see this kind of behavior, especially with these machines hosting production guests. Any help or suggestions on what to look for would be helpful. Regards ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] can't add cpu's to virtual guest
Thanks, that worked. From: Nitin kumar [mailto:nitin12ty...@gmail.com] Sent: Tuesday, March 06, 2012 10:20 AM To: Alex Jia Cc: David M. Barlieb; libvirt-users@redhat.com Subject: Re: [libvirt-users] can't add cpu's to virtual guest Hi All, We need to down the guest and edit the xml file and make the change on this . To save the change in xml configuration file need to give the command #virsh definr It will save permanetly ...start the guest ... No way to change this on line On Mon, Mar 5, 2012 at 8:30 AM, Alex Jia mailto:a...@redhat.com>> wrote: On 03/05/2012 04:49 AM, David M. Barlieb wrote: I have a rhel6.0 server running kvm. I have recently needed to add additional cpu's to some of the guests but cannot do it via virt-manager, can't doit using virt, and can't do it by vi the guest.xml file. Is this a bug or am I missing something? Hi David, The current kvm doesn't support vCPU hotplug, which will be supported in the future, so you can't change vCPU number for a running guest, it's a expected result. Regards, Alex Thanks, DaveB ___ libvirt-users mailing list libvirt-users@redhat.com<mailto:libvirt-users@redhat.com> https://www.redhat.com/mailman/listinfo/libvirt-users ___ libvirt-users mailing list libvirt-users@redhat.com<mailto:libvirt-users@redhat.com> https://www.redhat.com/mailman/listinfo/libvirt-users -- With Best Regards, Nitin Kumar Sr. System Engineer-Unix (CSC India Pvt. Ltd, Noida ) +91-706444 ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
[libvirt-users] can't add cpu's to virtual guest
I have a rhel6.0 server running kvm. I have recently needed to add additional cpu's to some of the guests but cannot do it via virt-manager, can't doit using virt, and can't do it by vi the guest.xml file. Is this a bug or am I missing something? Thanks, DaveB ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Re: [libvirt-users] virt-install Error
I had a similar issue on my rhel6.1 host, I had to enable virtualization in the system bios. From: libvirt-users-boun...@redhat.com [mailto:libvirt-users-boun...@redhat.com] On Behalf Of Nitin Nikam Sent: Thursday, January 12, 2012 9:46 AM To: libvirt-users@redhat.com Subject: [libvirt-users] virt-install Error Hi All, I'm trying to install a VM on host OS (Redhat 6.1, KVM hypervisor). I've installed all the required RPMs for KVM and libvirt tools. Here is the list of libvirt RPMs and KVM modules kvm.ko kvm-intel.ko libvirt-0.8.7-18.el6.x86_64.rpm libvirt-java-devel-0.4.7-1.el6.noarch.rpm virt-top-1.0.4-3.8.el6.x86_64.rpm libvirt-client-0.8.7-18.el6.x86_64.rpm libvirt-python-0.8.7-18.el6.x86_64.rpm virt-viewer-0.2.1-3.el6.x86_64.rpm libvirt-devel-0.8.7-18.el6.x86_64.rpm python-virtinst-0.500.5-3.el6.noarch.rpm virt-what-1.3-4.4.el6.x86_64.rpm libvirt-java-0.4.7-1.el6.noarch.rpm virt-manager-0.8.6-4.el6.noarch.rpm qemu-img-0.12.1.2-2.160.el6.x86_64.rpm qemu-kvm-0.12.1.2-2.160.el6.x86_64.rpm When I execute virt-install command I see the below error: [root@nsn /]# virt-install ERRORHost does not support any virtualization options I've already cross checked the VMX setting in BIOS and it is enabled. In VMX Feature MSR register , VT bit is set. Following is some info about the platform: [root@nsn /]# uname -a Linux rsp3-linux 2.6.32.27 #170 SMP PREEMPT Thu Jan 12 09:03:12 IST 2012 x86_64 GNU/Linux [root@nsn /]# cat /proc/cpuinfo processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 30 model name : Intel(R) Xeon(R) CPU C5528 @ 2.13GHz stepping: 4 cpu MHz : 2127.723 cache size : 8192 KB physical id : 0 siblings: 4 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 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall 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 dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid bogomips: 4259.94 clflush size: 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: [root@nsn /]# lsmod | grep kvm kvm_intel 36839 0 - Live 0xa016c000 kvm 149478 1 kvm_intel, Live 0xa0137000 has anyone encountered similar issues while using libvirt tools? am I missing something w.r.t installation? Appreciate your feedback. Thanks, kenden ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
[libvirt-users] management tools for kvm
I have been installing kvm guests on a number of hosts and have been managing them through a single virt manager on one of the hosts. I am looking for a tool that will allow me to manage them from a windows workstation, possibly using a web interface. Everything I've looked at and read about seems to require a linux workstation to install on, like oVirt or ConVirt. I am looking for a product that can run on a windows workstation using either firefox or ie. dave ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
[libvirt-users] (no subject)
Hello all, I am looking to use bonded interfaces as a bridge device for my virtual hosts. My goal was to have 4 nics bonded together to create a large pipe for my guests. I then tried to create a bridge device out of it similar to creating a bridge out of a single nic. It unfortunately did not work. Does any one know of a way to bond 2 or more nics than configure the bond as a bridge to the virtual guests. Thanks in advance, Dave B ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
[libvirt-users] (no subject)
HI, I've just begun using libvirt as part of my KVM installation and have been having some confusion regarding networking of my virtual guests. I'm not sure if I should even be sending this to this mailing list and if not please let me know and if possible where I should be sending this inquiry. I understand I can setup a dedicated bridged interface for my guest. But as for the virbr interface which is the default, I'm a little confused about. When using this, does the guest os use the same ip as the host? If so, then how to packets get to the guest instead of the host. I would guess there's an alternate mac address for the guest interface and this is how it gets there but am not certain. Sorry if this seems like a simple question but I'm not very well versed in networking. daveb ___ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
