February 2017 - Users - libvirt List Archives

[libvirt-users] How to achieve higher priority of a process in a lxc on CentOS machine
by WANG Cheng D 09 Feb '17

09 Feb '17

Dear all, I use libvirt lxc to host a real-time application with priority of -50. The native OS is fedora21 and lxc is also fedora21. Everything works fine. Linux "top" command shows the priority is -50). Then I use Openstack to manage lxc. The native compute node OS is CentOS7.2. and the lxc is fedora. After the real-time application is started in the lxc. top command on the native machine sees the real-time application with priority of 20, which is not what I expect. If lxc is Ubuntu, the priority of real-time application is also 20. Can anybody help me on this? Cheng Wang

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[libvirt-users] Trouble moving OVMF guest to new host
by Bashe, Joe 08 Feb '17

08 Feb '17

Hello, I recently had to reinstall my operating system on my computer. I made a backup of the entire partition beforehand onto an external drive. Now I am trying to import a VM from that backup onto the newly installed system. What I've done so far: - copied over the qcow2 disk image - copied over the XML config file - copied over the OVMF files under /usr/share/edk2.git/ovmf-x64/ I am getting this error whenever I try to boot the VM: Error starting domain: operation failed: unable to find any master var store for loader: /usr/share/edk2.git/ovmf-x64/OVMF_CODE-pure-efi.fd The file /usr/share/edk2.git/ovmf-x64/OVMF_CODE-pure-efi.fd does exist. Where would the "master var store" be located? Thank you, Joe -- Joseph Bashe Technical Director Bashe Development +1 (323) 999-1731

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[libvirt-users] accessing USB as storage device through lxc container.
by ravi mh 08 Feb '17

08 Feb '17

Hi all, I am not able to access USB as storage device in the lxc container. Having tried to pass the usb device with the product and vendor id, not able to see the device mounted in the lxc file system. However, they are seen as char devices in the container at the location. There is no issue of ACL, as the capabilities restrictions have been dropped. Has anyone successfully mounted the storage device in the libvirt. Having gone through the libvirt documentation, couldnt find further information of enabling the usb as storage device. Any pointers towards that would be useful. Host OS: IR800-GOS-1:~# lsusb Bus 001 Device 003: ID 8644:800b Bus 001 Device 001: ID 1d6b:0002 Bus 002 Device 001: ID 1d6b:0001 IR800-GOS-1:~# Lxc app container: root@ir800-lxc:/mnt/usb# ls -la /dev/bus/usb/001/003 *crwx-*----- 1 root root 189, 2 Feb 3 01:44 /dev/bus/usb/001/003 ----------libvirt xml snippet ------------ <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x8644'/> <product id='0x800b'/> </source> </hostdev> ----------------------------- while changing the mode from subsystem to capabilities, it issues error for validating against the schema. ---------------while changing the hostdev mode='capabilities'---------- virsh # edit n01_1 *error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/domain.rng* Extra element devices in interleave Element domain failed to validate content Failed. Try again? [y,n,i,f,?]: error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/domain.rng -------------------------------------------- Regards, *Ravi*

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[libvirt-users] Real time threads don't work in libvirt containers under CentOS 7.3
by Peter Steele 06 Feb '17

06 Feb '17

We've been using libvirt based containers under CentOS 7 and everything has been working fine. One application we run in our containers is ctdb, which uses SCHED_FIFO (real time) threads. This has been working without problems until our recent upgrade to CentOS 7.3. For some reason, ctdb is no longer able to create real time threads, and I've tried a simple program myself that confirms this. The same program works fine on the hypervisor so I know the kernel supports real time. Does anyone know what may have changed in CentOS 7.3 that breaks real time threads in libvirt containers? This is the simple test program I created to verify the real time threads are failing. This same program works in a libvirt container in CentOS 7.2. #include <stdio.h> #include <string.h> #include <pthread.h> pthread_t test_thread; void *test(void *arg) { printf("Starting thread\n"); sleep(1); printf("Thread complete\n"); return 0; } int main(int argc, char *argv[]) { int rc; printf("Starting main\n"); struct sched_param tsparam; pthread_attr_t tattr; memset(&tsparam, 0, sizeof(tsparam)); pthread_attr_init(&tattr); pthread_attr_setinheritsched(&tattr, PTHREAD_EXPLICIT_SCHED); pthread_attr_setschedpolicy(&tattr, SCHED_FIFO); tsparam.sched_priority = sched_get_priority_max(SCHED_FIFO) - 7; pthread_attr_setschedparam(&tattr, &tsparam); if ((rc = pthread_create(&test_thread, &tattr, test, NULL)) != 0) { printf("Unable to start rt thread\n"); } return 0; }

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[libvirt-users] Communicating between libvirt contains on separate hosts
by Peter Steele 03 Feb '17

03 Feb '17

I have a group of CentOS 7.2 servers running as VMs under VMware's ESXi 6.0. These all reside on the same subnet and we have no problem communicating between the different virtual servers. In addition, each of these servers run a number of libvirt-based LXC containers, also based on CentOS 7.2. The hosts can communicate with their containers without issues and the containers on a given server can communicate with each other. However, containers hosted on two different servers cannot communicate with each other or with other servers. If we duplicate this setup using KVM based VMs instead of ESXi VMs everything works fine--there is no problem communicating between LXC containers regardless of which VM hosts them. I assume this is not a libvirt issue but if anyone has encountered this issue in running libvirt containers under a VMware environment and has found a solution, I'd appreciate hearing from you. Thanks very much, Peter

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[libvirt-users] How to pin an libvirt lxc to a specific physical CPU core in openstack?
by WANG Cheng D 03 Feb '17

03 Feb '17

Dear all, In my applications, the real-time performance is very important, so I used 4 containers, with only one application running in each container and a physical CPU core is only dedicated to one lxc. and I must know which container is hosted by which CPU core. That is, I need to pin a specific lxc to a specific CPU core. I can achieve this in a native linux system by the following xml script (to pin a libvirt lxc to core #3 of a machine). It works fine. <vcpu placement='static' cpuset='3'>1</vcpu> Now I want to realize this on openstack platform, I carefully read the instruction on CPU pinning in nova and found that openstack flavor can only support pinning an lxc(instance) onto a set of CPU cores. I cannot allocate a specific pCPU to an lxc. After the lxc is started, "dumpxml" only shows the following statement, I even don't know to which CPU core the lxc is pinned. <vcpu placement='static' >1</vcpu> I tried to edit the libvirt.xml for the lxc which locates at nova/instances/#INSTANCE ID#/libvirt.xml and manually inserted cpuset='3', but this didn't take effect. After the lxc is restarted, the libvirt.xml is recovered and the modification was not there anymore. I googled the question on Internet, but no solution was found. I hope the libvirt people can help me on this. Thank you in advance. Cheng

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[libvirt-users] dhcp <option> element - is this included yet?
by lejeczek 02 Feb '17

02 Feb '17

hi all, I've seen this: https://www.redhat.com/archives/libvir-list/2013-March/msg00822.html it's a few years old and I wonder (I hope) - implemented yet? cheers, L.

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[libvirt-users] Libvirt and Virt-manager compatibility
by abhishek jain 02 Feb '17

02 Feb '17

Hi, I am using Libvirt (1.2.2) on RHEL6. I want to use the compatible virt-manager for it. When I tried 1.4.0 and 1.3.0 there is an insatllation issue on RHLE6 for gtk3. Is there any virt-manager version which works with 1.2.2 and RHLE6 too. Also what is the compatibility matrix for libvirt and virt-manager version. Thanks & RegardsAbhishek From: "libvirt-users-request(a)redhat.com" <libvirt-users-request(a)redhat.com> To: libvirt-users(a)redhat.com Sent: Wednesday, 1 February 2017 3:12 AM Subject: libvirt-users Digest, Vol 85, Issue 24 Send libvirt-users mailing list submissions to libvirt-users(a)redhat.com To subscribe or unsubscribe via the World Wide Web, visit https://www.redhat.com/mailman/listinfo/libvirt-users or, via email, send a message with subject or body 'help' to libvirt-users-request(a)redhat.com You can reach the person managing the list at libvirt-users-owner(a)redhat.com When replying, please edit your Subject line so it is more specific than "Re: Contents of libvirt-users digest..." Today's Topics: 1. CfP 12th Virtualization in High?-Performance Cloud Computing Workshop (VHPC '17) (VHPC 17) ---------------------------------------------------------------------- Message: 1 Date: Tue, 31 Jan 2017 22:42:50 +0100 From: VHPC 17 <vhpc.dist(a)gmail.com> To: libvirt-users(a)redhat.com Subject: [libvirt-users] CfP 12th Virtualization in High?-Performance Cloud Computing Workshop (VHPC '17) Message-ID: <CAF05tLM1bPf=R6rF7WF+EgAJoJxB6=U3QMzczJRRxozydGu9qQ(a)mail.gmail.com> Content-Type: text/plain; charset="utf-8" ==================================================================== CALL FOR PAPERS 12th Workshop on Virtualization in High?-Performance Cloud Computing (VHPC '17) held in conjunction with the International Supercomputing Conference - High Performance, June 18-22, 2017, Frankfurt, Germany. (Springer LNCS Proceedings) ==================================================================== Date: June 22, 2017 Workshop URL: http://vhpc.org Abstract Submission Deadline: February 28, 2017 Paper Submission Deadline: April 25, 2017 (Springer LNCS) Abstract/Paper Submission Link: https://edas.info/newPaper.php?c=23179 Call for Papers Virtualization technologies constitute a key enabling factor for flexible resource management in modern data centers, and particularly in cloud environments. Cloud providers need to manage complex infrastructures in a seamless fashion to support the highly dynamic and heterogeneous workloads and hosted applications customers deploy. Similarly, HPC environments have been increasingly adopting techniques that enable flexible management of vast computing and networking resources, close to marginal provisioning cost, which is unprecedented in the history of scientific and commercial computing. Various virtualization technologies contribute to the overall picture in different ways: machine virtualization, with its capability to enable consolidation of multiple under?utilized servers with heterogeneous software and operating systems (OSes), and its capability to live?-migrate a fully operating virtual machine (VM) with a very short downtime, enables novel and dynamic ways to manage physical servers; OS-?level virtualization (i.e., containerization), with its capability to isolate multiple user?-space environments and to allow for their co?existence within the same OS kernel, promises to provide many of the advantages of machine virtualization with high levels of responsiveness and performance; I/O Virtualization allows physical NICs/HBAs to take traffic from multiple VMs or containers; network virtualization, with its capability to create logical network overlays that are independent of the underlying physical topology and IP addressing, provides the fundamental ground on top of which evolved network services can be realized with an unprecedented level of dynamicity and flexibility; the increasingly adopted paradigm of Software-?Defined Networking (SDN) promises to extend this flexibility to the control and data planes of network paths. Publication Accepted papers will be published in a Springer LNCS proceedings volume. Topics of Interest The VHPC program committee solicits original, high-quality submissions related to virtualization across the entire software stack with a special focus on the intersection of HPC and the cloud. Major Topics - Virtualization in supercomputing environments, HPC clusters, HPC in the cloud and grids - OS-level virtualization and containers (Docker, rkt, Singularity, Shifter, i.a.) - Lightweight/specialized operating systems, unikernels - Optimizations of virtual machine monitor platforms and hypervisors - Hypervisor support for heterogenous resources (GPUs, co-processors, FPGAs, etc.) - Virtualization support for emerging memory technologies - Virtualization in enterprise HPC and microvisors - Software defined networks and network virtualization - Management, deployment of virtualized environments and orchestration (Kubernetes i.a.), - Workflow-pipeline container-based composability - Performance measurement, modelling and monitoring of virtualized/cloud workloads - Virtualization in data intensive computing and Big Data processing - HPC convergence - Adaptation of HPC technologies in the cloud (high performance networks, RDMA, etc.) - ARM-based hypervisors, ARM virtualization extensions - I/O virtualization and cloud based storage systems - GPU, FPGA and many-core accelerator virtualization - Job scheduling/control/policy and container placement in virtualized environments - Cloud reliability, fault-tolerance and high-availability - QoS and SLA in virtualized environments - IaaS platforms, cloud frameworks and APIs - Large-scale virtualization in domains such as finance and government - Energy-efficient and power-aware virtualization - Container security - Configuration management tools for containers (including CFEngine, Puppet, i.a.) - Emerging topics including multi-kernel approaches and,NUMA in hypervisors The Workshop on Virtualization in High?-Performance Cloud Computing (VHPC) aims to bring together researchers and industrial practitioners facing the challenges posed by virtualization in order to foster discussion, collaboration, mutual exchange of knowledge and experience, enabling research to ultimately provide novel solutions for virtualized computing systems of tomorrow. The workshop will be one day in length, composed of 20 min paper presentations, each followed by 10 min discussion sections, plus lightning talks that are limited to 5 minutes. Presentations may be accompanied by interactive demonstrations. Important Dates February 28, 2017 - Abstract Submission Deadline April 25, 2017 - Paper submission deadline May 30, 2017 - Acceptance notification June 22, 2017 - Workshop Day June 25, 2017 - Camera-ready version due Chair Michael Alexander (chair), scaledinfra technologies, Austria Anastassios Nanos (co-?chair), NTUA, Greece Balazs Gerofi (co-?chair), ?RIKEN Advanced Institute for Computational Science?, Japan Program committee Stergios Anastasiadis, University of Ioannina, Greece Jakob Blomer, CERN, Europe Ron Brightwell, Sandia National Laboratories, USA Eduardo C?sar, Universidad Autonoma de Barcelona, Spain Julian Chesterfield, OnApp, UK Stephen Crago, USC ISI, USA Christoffer Dall, Columbia University, USA Patrick Dreher, MIT, USA Robert Futrick, Cycle Computing, USA Maria Girone, CERN, Europe Kyle Hale, Northwestern University, USA Romeo Kinzler, IBM, Switzerland Brian Kocoloski, University of Pittsburgh, USA Nectarios Koziris, National Technical University of Athens, Greece John Lange, University of Pittsburgh, USA Che-Rung Lee, National Tsing Hua University, Taiwan Giuseppe Lettieri, University of Pisa, Italy Qing Liu, Oak Ridge National Laboratory, USA Nikos Parlavantzas, IRISA, France Kevin Pedretti, Sandia National Laboratories, USA Amer Qouneh, University of Florida, USA Carlos Rea?o, Technical University of Valencia, Spain Thomas Ryd, CFEngine, Norway Josh Simons, VMWare, USA Borja Sotomayor, University of Chicago, USA Craig Stewart, Indiana University, USA Anata Tiwari, San Diego Supercomputer Center, USA Kurt Tutschku, Blekinge Institute of Technology, Sweden Yasuhiro Watashiba, Osaka University, Japan Nicholas Wright, Lawrence Berkeley National Laboratory, USA Chao-Tung Yang, Tunghai University, Taiwan Paper Submission-Publication Papers submitted to the workshop will be reviewed by at least two members of the program committee and external reviewers. Submissions should include abstract, key words, the e-mail address of the corresponding author, and must not exceed 10 pages, including tables and figures at a main font size no smaller than 11 point. Submission of a paper should be regarded as a commitment that, should the paper be accepted, at least one of the authors will register and attend the conference to present the work. Accepted papers will be published in a Springer LNCS volume. . The format must be according to the Springer LNCS Style. Initial submissions are in PDF; authors of accepted papers will be requested to provide source files. Format Guidelines: ftp://ftp.springer.de/pub/tex/latex/llncs/latex2e/llncs2e.zip Abstract, Paper Submission Link: https://edas.info/newPaper.php?c=23179 Lightning Talks Lightning Talks are non-paper track, synoptical in nature and are strictly limited to 5 minutes. They can be used to gain early feedback on ongoing research, for demonstrations, to present research results, early research ideas, perspectives and positions of interest to the community. Submit abstract via the main submission link. General Information The workshop is one day in length and will be held in conjunction with the International Supercomputing Conference - High Performance (ISC) 2017, June 18-22, Frankfurt, Germany. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.redhat.com/archives/libvirt-users/attachments/20170131/4024ae3d…> ------------------------------ _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users End of libvirt-users Digest, Vol 85, Issue 24 *********************************************

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[libvirt-users] virt-p2v - Windows 10 guest hangs at boot after successful P2V
by JT Edwards 01 Feb '17

01 Feb '17

Hi all, I successfully virt-p2v'ed a Windows 10 laptop to my Centos 7.3 instance running KVM. However, on boot, the guest hangs. Is there a registry fix that is needed after the P2V is done? Here is what is in the guest's logfile: 017-01-08 03:20:37.508+0000: starting up libvirt version: 2.0.0, package: 10.el7_3.2 (CentOS BuildSystem <http://bugs.centos.org>, 2016-12-06-19:53:38, c1bm.rdu2.centos.org) qemu version: 1.5.3 (qemu-kvm-1.5.3-126.el7), hostname: torden40.me.org LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=spice /usr/libexec/qemu-kvm -name win10 -S -machine pc-i440fx-rhel7.0.0,accel=kvm,usb=off -cpu Conroe,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff -m 4096 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid f72e7ad5-98d4-44ab-aa85-347fe232b4e5 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-9-win10/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x6.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x6 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x6.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/home/tstrike39/Virtuals/tordenmobile.img,format=qcow2,if=none,id=drive-ide0-0-0 -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -netdev tap,fd=26,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:d6:c8:67,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0,bus=usb.0,port=1 -spice port=5900,addr=127.0.0.1,disable-ticketing,image-compression=off,seamless-migration=on -vga qxl -global qxl-vga.ram_size=67108864 -global qxl-vga.vram_size=67108864 -global qxl-vga.vgamem_mb=16 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=2 -chardev spicevmc,id=charredir1,name=usbredir -device usb-redir,chardev=charredir1,id=redir1,bus=usb.0,port=3 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -msg timestamp=on char device redirected to /dev/pts/2 (label charserial0) main_channel_link: add main channel client main_channel_handle_parsed: net test: latency 0.140000 ms, bitrate 14222222222 bps (13563.368055 Mbps) ((null):19947): Spice-Warning **: red_channel.c:542:red_channel_client_send_ping: getsockopt failed, Operation not supported red_dispatcher_set_cursor_peer: inputs_connect: inputs channel client create ((null):19947): Spice-Warning **: red_channel.c:542:red_channel_client_send_ping: getsockopt failed, Operation not supported ((null):19947): Spice-Warning **: red_channel.c:542:red_channel_client_send_ping: getsockopt failed, Operation not supported Below is the XML of my migrated instance: <?xml version='1.0' encoding='utf-8'?> <domain type='kvm'>  <name>localhost</name> <memory unit='KiB'>4194304</memory> <currentMemory unit='KiB'>4194304</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64'>hvm</type> </os> <features> <acpi/> <apic/> </features> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/home/tstrike39/Virtuals/localhost-sda'/> <target dev='vda' bus='virtio'/> </disk> <interface type='network'> <source network='default'/> <model type='virtio'/> <mac address='f0:de:f1:08:9c:c4'/> </interface> <video> <model type='cirrus' vram='9216' heads='1'/> </video> <graphics type='vnc' autoport='yes' port='-1'/> <input type='tablet' bus='usb'/> <input type='mouse' bus='ps2'/> <console type='pty'/> </devices> </domain> Any help would be appreciated!

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