- Users - libvirt List Archives

[libvirt-users] virConnectListAllDomains support for PowerVM
by Camilo Aguilar 06 Nov '13

06 Nov '13

Hey guys, I'm so glad you added the new set of virConnectListAllDomains functions, it simplifies a lot our work!. I was only wondering why there is no support for PowerVM. Is it that it hasn't been developed or is there some technical hardship? Best, Camilo Aguilar

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[libvirt-users] libvirt networking using VLAN Tag basics
by Dan Sa 06 Nov '13

06 Nov '13

topology : two guest connected to physical LAN (vlan 620 and vlan 621) on host : 1) creating bridge br0 2) creating bridge for guest 1 and guest 2 - to separate traffic 3) virtual network1 : I have default NAT 192.168.122.x DHCP feeding IP to eth1 4) virtual network2 : I want to use 192.168.0.0 for eth0 my question is what would be my virtual network2 looks like : following is default xml : <network> <name>default</name> <uuid>8778244b-1a0c-c15f-c348-26462a07a639</uuid> <forward mode='nat'/> <bridge name='virbr0' stp='on' delay='0' /> <mac address='52:54:00:3E:19:B3'/> <ip address='192.168.122.1' netmask='255.255.255.0'> <dhcp> <range start='192.168.122.2' end='192.168.122.254' /> </dhcp> </ip> </network> in virtmanager I assign this default to NIC1 and gets IP in range 192.168.122.x I want to define another network and assign to NIC2 so I can get IP in range 192.168.0.x my guest are on interface em2.620, em2.621 etc thanks

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[libvirt-users] Using resource pools (in vmware vcenter) with libvirt
by Ashutosh Bisht 05 Nov '13

05 Nov '13

Hi I am evaluating use of libvirt to manage a cluster of ESXi servers. We plan to use "resource pool" concept of vcenter/vmware to easily scale-up or scale-down the cluster of ESXi servers >From vmware doc "Resource pools are partitions of computing and memory resources from a single host or a cluster" Since VM can be designated to hosts, clusters or "resource pool".. assigning VM to resource pool allows a simple way to manage scale-up / scale-down operations. This is because one doesn't need to know identity of ESXi server (from cluster of servers) to assign/place a VM.. one can just refer to resource pool. >From reading the doc of libvirt, it seems that libvirt always requires identity of ESXi servers in all the (vcenter) API calls. Is my understanding correct? If so, does libvirt have a similar concept/notion so that VM life-cycle can be managed without knowing identity of underlying server? with regards Ashutosh

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[libvirt-users] Using certtool to generate certificates for ESXi
by Shiva Bhanujan 05 Nov '13

05 Nov '13

Hello, I'm using certtool to generate the server certificates for ESXi - http://libvirt.org/remote.html#Remote_TLS_CA. I just copy the server certificate and key as /etc/vmware/ssl/rui.crt and /etc/vmware/ssl/rui.key. And then use virsh to connect from a CentOS 6.4 VM running on it - "virsh -c esx://<esx IP>. I get the following error - error: internal error curl_easy_perform() returned an error: Peer certificate cannot be authenticated with known CA certificates (60) : Peer certificate cannot be authenticated with known CA certificates error: failed to connect to the hypervisor is there something basic that I'm missing? Regards, Shiva

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[libvirt-users] USB passthrough to WinXP guest - WinXP ignores it
by E Gerlach 03 Nov '13

03 Nov '13

WinXP ignores a USB passthrough! Hello, I need a persistent passthrough of a USB-device: Bus 001 Device 020: ID 04e6:5311 SCM Microsystems, Inc. I added <hostdev mode='subsy.... </hostdev> like this to xml file: [...] <on_crash>restart</on_crash> <devices> <hostdev mode='subsystem' type='usb' managed='no'> <source> <vendor id='0x04e6'/> <product id='0x5311'/> </source> </hostdev> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> [...] /var/log/libvirt/qemu/win-xp-prof.log: ===================================== 2013-11-02 12:26:42.007+0000: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/ QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-1.1 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name win-xp-prof -uuid 5217ba2d-0d7d-1579-74a6-a1ad8439dda3 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win-xp-prof.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/libvirt/images/win-xp-prof.img,if=none,id=drive-ide0-0-0,format=raw -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=20,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:7f:d8:80,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -vga std -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 char device redirected to /dev/pts/4 The enty seems to be ignored completely. Where is my configuration fault? Maybe extra module need to be loaded? - In installed WinXP with virt-manager. Host: debian wheezy, kernel 3.10, libvirt-bin 0.9.12-11 qemu-kvm 1.1.2 tia Ekkard

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Re: [libvirt-users] [Qemu-devel] About VM fork in QEMU
by Xinyang Ge 02 Nov '13

02 Nov '13

>>> External snapshots (via the blockdev-snapshot-sync QMP command) can be >>> taken in a matter of milliseconds if you only care about disk state. >>> Furthermore, if you want to take a snapshot of both memory and disk >>> state, such that the clone can be resumed from the same time, you can do >>> that with a guest downtime that only lasts as long as the >>> blockdev-snapshot-sync, by first doing a migrate to file then doing the >>> disk snapshot when the VM pauses at the end of migration. Resuming the >>> original guest is fast; resuming from the migration file is a bit >>> longer, but it is still the fastest way possible to resume from a >>> memory+disk snapshot. If you need anything faster, then yes, you would >>> have to write patches to qemu to attempt cloning via fork() that makes >>> sure to modify the active disk in use by the fork child so as not to >>> interfere with the fork parent. >> >> I think migrating memory to file then doing external disk snapshot is >> exactly what we want. Since we are using libvirt to manage different >> VMs, could you give us some specific guides (or references) that how >> we could migrate memory state to file using virsh interfaces and do >> external snapshots? > > virsh snapshot-create-as $dom $name --live --memspec /path/to/memoryfile I have tried this command on libvirt v1.1.3 and it returns "error: invalid argument: qemuDomainSnapshotCreateXML: unsupported flags (0x100)". Looks like --live is not supported yet. Could you let us know which version we should of libvirt we should use in order to use this feature? Thanks, Xinyang -- Xinyang GE Department of Computer Science & Engineering The Pennsylvania State University Homepage: http://www.cse.psu.edu/~xxg113/

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[libvirt-users] Fwd: Help regarding virsh domifstat
by Rohit Bhat 02 Nov '13

02 Nov '13

Hi, I need a small help. I am working on a project where i have to monitor network activity of a VM running on KVM. I am interested in how much data is going into the VM and how much data is coming out of the VM. I checked on the net and found out virsh domifstat is the way to go about it. 1. But looks like these stats also include bytes related to control traffic for the VM. Is there a way to exclude that? I just want the size of actual data transfers. 2. Is there a way by which i can report the data transfer of VM with the outside world (outside hypervisor) only while excluding data transfer with any other VM on the same host or with the host itself? Thanks, Rohit

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[libvirt-users] libvirt_lxc causes cpu 100% usage
by jj zhong 01 Nov '13

01 Nov '13

libvirt_lxc causes cpu 100% usage? libvirt version : 1.1.1 I don't know what happend, any help would be appreciated. thx top - 07:39:44 up 1 day, 2:13, 2 users, load average: 4.72, 4.59, 4.51 Tasks: 243 total, 4 running, 239 sleeping, 0 stopped, 0 zombie %Cpu0 : 33.1 us, 1.3 sy, 0.0 ni, 64.6 id, 0.7 wa, 0.0 hi, 0.3 si, 0.0 st %Cpu1 : 41.1 us, 3.0 sy, 0.0 ni, 55.3 id, 0.7 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu2 : 18.0 us, 2.0 sy, 0.0 ni, 79.7 id, 0.0 wa, 0.0 hi, 0.3 si, 0.0 st %Cpu3 : 94.8 us, 5.2 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu4 : 55.7 us, 7.5 sy, 0.0 ni, 36.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu5 : 66.1 us, 4.3 sy, 0.0 ni, 29.6 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu6 : 16.8 us, 1.0 sy, 0.0 ni, 82.2 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu7 : 7.2 us, 0.7 sy, 0.0 ni, 92.1 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem: 1972112 total, 1894912 used, 77200 free, 236576 buffers KiB Swap: 10485744 total, 0 used, 10485744 free, 574544 cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 15750 root 20 0 10448 2080 1216 R 100.3 0.1 1322:38 libvirt_lxc 27517 root 20 0 10448 2032 1200 R 99.3 0.1 1273:44 libvirt_lxc 25250 root 20 0 10480 2048 1200 R 99.0 0.1 1277:31 libvirt_lxc ....

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[libvirt-users] upstart script for virtlockd
by NEVEU Stephane 01 Nov '13

01 Nov '13

Hi all, Trying to test libvirt 1.1.3 with virtlockd locking my qcow2 images on a NFS storage between two kvm hosts. ./configure ... --with-init-script=upstart Libvirtd upstart script is actually well generated but I can't see nothing about virtlockd... or am I blind ? :) Nevertheless, running virtlockd -d && service libvirtd restart works fine. Am I wrong thinking that editing qemu-lockd.conf with my needs and qemu.conf with lock_manager="lockd" was enough ? Thank you for your help.

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[libvirt-users] libvirt_lxc: SELinux MCS
by Matteo Piccinini 01 Nov '13

01 Nov '13

Hello list, my name is Matteo, i'm new on that list. I'm working on a multitenancy platform with linux containers through libvirt on a production system with Red Hat 6.4. Every container run a separate instance of OpenSSH and Apache HTTPd and I need to give root privileges to the developers and I try to configure SELinux using svirt and MCS. I try the secmodel type dynamic and static in the xml file but it didn't work, I received the following error: error : virSecurityLabelDefParseXML:3228 : XML error: security label is missing error : virNetSocketNewConnectUNIX:566 : Failed to connect socket to '/var/run/libvirt/lxc/cntr1.sock': Connection refused I configure the followings secmodel definition and used chcon on the rootfs directory (created with yum) with "system_u:object_r:svirt_lxc_file_t:s0:c30,c50" label: <seclabel type='static' model='selinux' relabel='no'> <label>system_u:system_r:svirt_lxc_net_t:s0:c30,c50</label> </seclabel> or: <seclabel type='dynamic' model='selinux' relabel='yes'> <label>system_u:system_r:svirt_lxc_net_t:s0:c30,c50</label> </seclabel> I try to compile the last version from the master branch of git the result was always the same, the error was related to the SELinux driver not enabled. The output from "virsh -c lxc:/// capabilities" doesn't show the secmodel and doi tag like the qemu/kvm have for the lxc driver the selinux driver. How can I enable the SELinux driver for libvirt lxc in Red Hat 6.4? SELinux is in enforcing mode. Thanks in advance, Matteo

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