similar to: cputune shares with multiple cpu and pinning

Apologies as this is is not a specific libvirt question. Is qemu-img convert compatible with thin-provisioned LVs as targets ? I wanted to convert a file-based image to a LV image where the file-based image has a capacity much larger than the actual data it contains, so it has a small footprint on disk (either a qcow2 or a raw, but sparse, image). If I use qemu-img convert -O raw ... with a

Is it possible to use virsh to set the cpuset attribute of the CPU Allocation element in a domain ? <domain> ... <vcpu placement='static' cpuset="1-4,^3,6" current="1">2</vcpu> ... </domain> I have seen that virsh vcpupin and virsh emulatorpin can be used to query and set the cpusets of the <vcpupin> and <emulatorpin>

<font size=2 face="sans-serif">We have just seen libvirt ending up in an inconsistent state : a shut off transient domain.</font> <br><font size=2 face="sans-serif">&nbsp;</font> <br><font size=2 face="sans-serif">Has anyone seen this before ?</font> <br> <br><font size=2

Hi I'd want to pin the vcpu of a guest to a pcpu. the docs clearly say https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Administration_Guide/ch09s04.html "Locking a guest to a particular NUMA node offers no benefit if that node does not have sufficient free memory for that guest. libvirt stores information on the free memory available on

Hey All, What is the correct method for using cputune to use a percentage of a host core? From testing I currently have period set to 10,000 and quota set to 3,500. This gets me 35% of a used core on the host (36 3.4 2:42.20 qemu-system-x86) however when running stress inside the VM I am showing this usage in top;w %Cpu(s): 0.0 us, 0.0 sy, 0.0 ni, 0.0 id, 0.0 wa, 35.2 hi, 0.0 si, 64.8

Hello All, Since 4.5.0-23.el7 version (Red Hat 7.7), when I launch pinned VM, libvirtd reset CPU affinity to all enabled in host CPUs, if it runs in custom cpuset. I can't reproduce this behavior with 4.5.0-10.el7_6.12 with the same kernel version (Red Hat 7.7). Libvirt runs in a custom cpuset 'libvirt', where the number of available cpus is restricted to 0,2,4,6,8. And this

>5. LTP testing might run very slow in SMP VTI Domain with credit scheduler. If binding VTI >and Xen0 vcpu, this bug won''t be there. Hi keir, In credit scheduler, two vcpus in the same domain may be scheduled on the same CPU. For instance, vcpu0 and vcpu1 are running on the same CPU, vcpu0 is doing spin_lock in guest, then time slice is due, vcpu0 is scheduled out before doing

Looking at the python API, once I have a domain object I can call domain.pinVcpu to pin a specific vcpu to a physical CPU. I found http://www.mail-archive.com/libvir-list at redhat.com/msg04562.html which mentioned some changes to the C API in the Python implementation, and was wondering if my understanding is correct. Say that I have a host system with 16 logical CPU's, 0-15. If I wanted to

Hi, As told in "Control Groups Resource Management" libvirt page : Legacy cgroups layout Prior to libvirt 1.0.5, the cgroups layout created by libvirt was different from that described above, and did not allow for administrator customization. Libvirt used a fixed, 3-level hierarchy libvirt/{qemu,lxc}/$VMNAME which was rooted at the point in the hierarchy where libvirtd itself was

On Thu, Oct 29, 2015 at 10:40:44AM +0000, Jean-Pierre Ribeauville wrote: >Hi, > >As told in "Control Groups Resource Management" libvirt page : >Legacy cgroups layout >Prior to libvirt 1.0.5, the cgroups layout created by libvirt was different from that described above, and did not allow for administrator customization. Libvirt used a fixed, 3-level hierarchy

We need to write the irq number to GICC_DIR on the physical cpu that previously received the interrupt, but currently we are doing it on the pcpu that received the maintenance interrupt. As a consequence if a vcpu is migrated to a different pcpu, the irq is going to be EOI''ed on the wrong pcpu. This covers the case where dom0 vcpu0 is running on pcpu1 for example (you can test this

The same client was used for syslinux.efi (both success on same subnet and failure on different subnet) and grub.efi. The DHCP host block is setup like: host testing { hardware ethernet {mac} ; next-server 10.16.195.178 ; filename "rhel64/syslinux.efi" ; } I'll pull a tcpdump filtering by the IP tomorrow when I get back to the systems. On Mon, Nov 4, 2013 at 6:41 PM,

Currently, the getdomaininfo function (used to fill in a dom0_getdomaininfo_t for a domain) calculates a domain''s total CPU time from its VCPU times using the code: if ( v->cpu_time > cpu_time ) cpu_time += v->cpu_time; This causes a VCPU''s time to only be counted if it is greater than the current total; so if VCPU0 has 10 seconds and VCPU1 has 5, the

I''ve been looking into bug [1]#195 and I have a couple of questions on how timer interrupts and virqs are handled. Is it possible for dom0 linux to irq balance timer interrupts to different cpus? That is, if xen sends a VIRQ_TIMER to vcpu0, backed by cpu0, is it possible for that interrupt to be handled by vcpu1, backed by cpu1 ? After putting in some debug code in to timer_interrupt

Hi I have defined a logical pool and a volume within it # virsh vol-create-as images_lvm myvol 2G Vol myvol created # virsh vol-list images_lvm Name Path ----------------------------------------- myvol /dev/libvirt_images_vg/myvol if I try to create another volume using the previous one as backing-vol, the creation fails with what looks like an incorrect

Op 2013-11-04 om 20:26 schreef Jason Matthews: > The same client was used for syslinux.efi (both success on same subnet and > failure on different subnet) and grub.efi. The DHCP host block is setup > like: > > host testing { > hardware ethernet {mac} ; > next-server 10.16.195.178 ; > filename "rhel64/syslinux.efi" ; > } > > I'll pull a

The 27/06/13, Edoardo Comar wrote: > Apologies as this is is not a specific libvirt question. > > Is qemu-img convert compatible with thin-provisioned LVs as targets ? > > I wanted to convert a file-based image to a LV image > where the file-based image has a capacity much larger than the actual data > it contains, so it has a small footprint on disk > (either a qcow2 or

Sorry. Here are the tcpdumps on pastebin: Filtered by IP taken on tftp server: http://pastebin.com/NgesF5p9 Taken from mirrored port: http://pastebin.com/kuw22GF2 On Tue, Nov 5, 2013 at 12:21 PM, Geert Stappers <stappers at stappers.nl>wrote: > Op 2013-11-04 om 20:26 schreef Jason Matthews: > > The same client was used for syslinux.efi (both success on same subnet > and >

I have 2 VMs launched by : 'virsh create <xml file>' . Both VMs get 2 vcpus (out of total 2 cores of the host) I then try bias their cpu cycle quota by manipulating the cpu_shares ( virsh schedinfo --set cpu_shares=<value> vm1/2 ) so that VM1 will get 3 times the cpu cycles VM2 gets. (e.g : VM1 cpu_shares = 150 . VM2 cpu_shares = 50) . There are no other VMs defined or