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Re: [libvirt-users] [virt-tools-list] libvirt/virt-manager source integration with xen
by Cole Robinson 05 Mar '15

05 Mar '15

On 03/02/2015 10:55 AM, Wayne Mills wrote: > Hi, > > I built and installed Xen 4.5.0 from source, on top of Ubuntu 14.04.2, using > "make world" and "make install" targets. I then installed latest virt-manager > from pre-built packages. After bringing up virt-manager I attempt to connect > to Xen hypervisor and got: > > unable to connect to libvirt > Failed to connect socket to /var/run/libvirt/libvirt-sock' No such file > or directory > > I then noticed libvirt-bin isn't running. If I try to issue 'service > libvirt-bin start' it gives me back a process number, but it apparently dies > quickly because the service still shows as down. Three log files are touched > during my start attempt: > > -rw-r--r-- 1 root root 39757 Feb 27 06:00 /var/log/xenstored-access.log > -rw-r--r-- 1 root root 44908 Feb 27 06:00 > /var/log/libvirt/libxl/libxl-driver.log > -rw------- 1 root root 46396 Feb 27 06:00 /var/log/libvirt/libvirtd.log > > * xenstored-access.log has 22 new entries, grouped into pairs that increment > an "Axx" identifier and go from A63 to A73. Here is the A63 logs: > > [20150227T11:00:29.478Z] A63 newconn > [20150227T11:00:29.479Z] A63 endconn > > * libxl-driver.log also has 11 log groupings that are just the same set of > logs repeated 11 times. Here is the first group: > > xc: detail: sysctl operation failed -- need to rebuild the user-space > tool set? > libxl: error: libxl.c:4320:libxl_get_physinfo: getting physinfo: > Permission denied > xc: debug: hypercall buffer: total allocations:7 total releases:7 > xc: debug: hypercall buffer: current allocations:0 maximum allocations:1 > xc: debug: hypercall buffer: cache current size:1 > xc: debug: hypercall buffer: cache hits:6 misses:1 toobig:0 > > * libvirtd.log also has 11 log groupings, that are just the same set of logs > repeated 11 times. Here is that group: > > 2015-02-27 11:00:29.479+0000: 4842: info : libvirt version: 1.2.2 > 2015-02-27 11:00:29.479+0000: 4842: error : libxlDriverConfigNew:1131 : > Unable to configure libxl's memory management parameters > 2015-02-27 11:00:29.479+0000: 4842: error : virStateInitialize:749 : > Initialization of LIBXL state driver failed: Unknown problem > 2015-02-27 11:00:29.479+0000: 4842: error : daemonRunStateInit:920 : > Driver state initialization failed > > When I google for libxl_get_physinfo I see other reported errors during "xl > info" and other "xl" commands. I tried "xl info" and that works for me and > does not alter the log files: > > root@<server>:~# xl info > host : server > release : 3.13.0-46-generic > version : #75-Ubuntu SMP Tue Feb 10 15:24:04 UTC 2015 > machine : x86_64 > nr_cpus : 8 > max_cpu_id : 7 > nr_nodes : 2 > cores_per_socket : 4 > threads_per_core : 1 > cpu_mhz : 2400 > hw_caps : > bfebfbff:2c100800:00000000:00003f00:17bee3ff:00000000:00000001:00000000 > virt_caps : hvm hvm_directio > total_memory : 98168 > free_memory : 128 > sharing_freed_memory : 0 > sharing_used_memory : 0 > outstanding_claims : 0 > free_cpus : 0 > xen_major : 4 > xen_minor : 5 > xen_extra : .0 > xen_version : 4.5.0 > xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 > hvm-3.0-x86_32p hvm-3.0-x86_64 > xen_scheduler : credit > xen_pagesize : 4096 > platform_params : virt_start=0xffff800000000000 > xen_changeset : Mon Jan 12 11:30:05 2015 -0500 git:a8ac229 > xen_commandline : placeholder > cc_compiler : gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2 > cc_compile_by : root > cc_compile_domain : cisco.com <http://cisco.com> > cc_compile_date : Thu Feb 19 07:26:00 EST 2015 > xend_config_format : 4 > root@<server>:~# > > After consulting with xen-users mailer, I was given this response by "Ian": > > "Did you install libvirt from source or from packages? If the latter then you > may have a disconnect between the packaged version and your source-built Xen. > You'll probably need to rebuild libvirt against your Xen libraries." > > What are the virt-related steps to take to test out Ian's idea? I have root > access to one machine that serves both as a host to VM's as well as a build > environment for source builds such as this. I already built xen 4.5.0 and > installed it. Do I now need to separately download and build libvirt, then > download and build virt-manager? Is it important to place the virt* code > within the xen source tree, or do something else so that the virt* code > compiles "against" an appropriate xen environment? > > In summary, I would like some guidance on how to build libvirt, and if needed, > virt-manager, source against a specific Xen version. > Distro packages of virt-manager should work fine, once you get libvirt building. I recommend you download the ubuntu .deb config files for libxl, and rebuild+install libxl with the exact same build flags your distro packages use. They've already figured out the necessary flags to make things work together with the other distro packages. Then do the same with libvirt. - Cole

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[libvirt-users] Broken OS when booting rootfs from 9p share
by Olivier Mauras 02 Mar '15

02 Mar '15

Hello, I've been trying to boot a VM with the rootfs being a 9P share from the host. The VM OS is centos 7. The OS boots but no services can work and it appears that the authentication system is broken. Now the funny thing is that booting the same OS on the same 9P share manually with Qemu works as expected with a fully functionnal OS... So I'm wondering what could libvirt do that render the OS on the share broken - Something with rights ? Selinux is disabled on the host, and accessmode to the share is set to passthrough in both cases. Here's my working Qemu line: qemu -kernel /srv/overlay/kernels/grsec-3.14.33-101/vmlinuz-3.14.33-101.el6.x86_64 -initrd /srv/overlay/kernels/grsec-3.14.33-101/initramfs-3.14.33-101.el6.x86_64.img -fsdev local,id=r,path=/srv/overlay/run/irc,security_model=passthrough -device virtio-9p-pci,fsdev=r,mount_tag=root -nographic -m 256M -machine pc-i440fx-2.1,accel=kvm -netdev tap,id=net0 -device virtio-net,netdev=net0,mac=52:54:00:12:36:34 -smp 1,sockets=1,cores=1 -append 'root=virtfs:root rootflags=trans=virtio,version=9p2000.u ro rootfstype=9p console=ttyS0' And here my libvirt VM config: <domain type='kvm'> <name>irc</name> <uuid>ffbd32eb-a693-eadd-8923-18de80137472</uuid> <memory unit='KiB'>262144</memory> <currentMemory unit='KiB'>262144</currentMemory> <vcpu placement='static'>1</vcpu> <os> <type arch='x86_64' machine='pc-i440fx-2.1'>hvm</type> <kernel>/srv/overlay/kernels/grsec-3.14.33-101/vmlinuz-3.14.33-101.el6.x86_64</kernel> <initrd>/srv/overlay/kernels/grsec-3.14.33-101/initramfs-3.14.33-101.el6.x86_64.img</initrd> <cmdline>root=virtfs:root rootflags=trans=virtio,version=9p2000.u ro rootfstype=9p</cmdline> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <controller type='usb' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='pci' index='0' model='pci-root'/> <filesystem type='mount' accessmode='passthrough'> <source dir='/srv/overlay/run/irc'/> <target dir='root'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </filesystem> <interface type='bridge'> <mac address='52:54:00:00:36:34'/> <source bridge='br0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes'/> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </memballoon> </devices> </domain> My libvirt version is 1.2.9, and qemu is 2.1.2. Thanks for your help, Olivier

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[libvirt-users] simple network and firewalld errors
by lejeczek 02 Mar '15

02 Mar '15

hi everybody I have a simple network: <network> <name>default</name> <uuid>1e71fa47-4893-4435-8b60-575d2b51c231</uuid> <forward mode='nat'> <nat> <port start='1024' end='65535'/> </nat> </forward> <bridge name='virbr0' stp='on' delay='0' /> <mac address='52:54:00:58:47:4b'/> <ip address='192.168.4.1' netmask='255.255.255.0'> <dhcp> <range start='192.168.4.2' end='192.168.4.254' /> </dhcp> </ip> </network and I wonder what might be wrong, I get many errors in firewalld when I restart libvirtd Main PID: 13194 (firewalld) CGroup: /system.slice/firewalld.service └─13194 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid 2015-03-01 17:12:46 ERROR: COMMAND_FAILED: '/sbin/iptables --table filter --delete FORWARD --out-interface virbr0 --jump REJECT' failed: iptables: No chain/target/match by that name. 2015-03-01 17:12:46 ERROR: COMMAND_FAILED: '/sbin/iptables --table filter --delete FORWARD --in-interface virbr0 --jump REJECT' failed: iptables: No chain/target/match by that name. 2015-03-01 17:12:47 ERROR: COMMAND_FAILED: '/sbin/iptables --table filter --delete INPUT --in-interface virbr0 --protocol udp --destination-port 53 --jump ACCEPT' failed: iptables: Bad rule (does a matching rule exist in that chain?). 2015-03-01 17:12:47 ERROR: COMMAND_FAILED: '/sbin/iptables --table filter --delete INPUT --in-interface virbr0 --protocol tcp --destination-port 53 --jump ACCEPT' failed: iptables: Bad rule (does a matching rule exist in that chain?). 2015-03-01 17:12:47 ERROR: COMMAND_FAILED: '/sbin/iptables --table mangle --delete POSTROUTING --out-interface virbr0 --protocol udp --destination-port 68 --jump CHECKSUM --checksum-fill' failed: iptables: No chain/target/match by that name. 2015-03-01 17:12:48 ERROR: COMMAND_FAILED: '/sbin/iptables --table filter --delete INPUT --in-interface virbr0 --protocol udp --destination-port 67 --jump ACCEPT' failed: iptables: Bad rule (does a matching rule exist in that chain?). 2015-03-01 17:12:48 ERROR: COMMAND_FAILED: '/sbin/iptables --table filter --delete INPUT --in-interface virbr0 --protocol tcp --destination-port 67 --jump ACCEPT' failed: iptables: Bad rule (does a matching rule exist in that chain?). 2015-03-01 17:36:03 ERROR: NOT_ENABLED 2015-03-01 17:36:04 ERROR: NOT_ENABLED 2015-03-01 18:19:35 ERROR: NOT_ENABLED grateful for all suggestions thanks

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[libvirt-users] Failed to connect socket to '/usr/local/libvirt/var/run/libvirt/libvirt-sock
by Aditi Aggarwal 01 Mar '15

01 Mar '15

With respect to your thread started Tue, 30 Oct 2012, please guide me if you were able to solve the error. link to the thread. https://www.redhat.com/archives/libvirt-users/2012-October/msg00139.html Thanks!

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[libvirt-users] DriveReady error after live migration
by Steve Gaarder 28 Feb '15

28 Feb '15

I have three machines running libvirt under Scientific Linux (RHEL derivative) version 6. The virtual machine disk images are running SL 5 and 6, are all stored on NFS, and I can do live migrations with virsh migrate --live guestname qemu+ssh://vmhostname.math.cornell.edu/system Trouble is, within a day or two after the migration, the guest hangs up with repeated DriveReady errors and has to be shut down forcibly and rebooted. I am using Sanlock, with the lock files also stored on NFS. Any ideas? Steve Gaarder System Administrator, Dept of Mathematics Cornell University, Ithaca, NY, USA gaarder(a)math.cornell.edu

1 0

[libvirt-users] KVM management through the web with libvirt and mist.io
by Markos Gogoulos 27 Feb '15

27 Feb '15

Hi, I would like to announce that we have integrated libvirt for managing KVM vms on mist.io. Mist.io is an open source project and a service that can assist you in managing your vms on a unified way, providing a simple interface for all of your infrastructure (multiple public cloud providers, OpenStack based public/private clouds, Docker servers, bare metal servers and now KVM hypervisors). Adding a KVM backend via libvirt will show a list of all of the virtual machines (running and terminated), along with the hypervisor itself. You can execute actions such as reboot, shutdown and start. Instead of having to log in to the hypervisor to reboot a VM that has hanged, you can do it with a few taps on your smartphone, laptop or tablet, along with the rest of your infrastructure. You can also have a web ssh shell if you add an ssh key. Creation of new VMs is not supported yet but is on our plans. You can have a look on a blog post we've written recently at http://blog.mist.io/post/110890044256/announcing-kvm-and-vcloud-support, use the open source tool (http://github.com/mistio/mist.io) or try out the service (https://mist.io) offering more features such as monitoring, adding custom metrics, scripts and logs. Hope you'll find it usefull Cheers, Markos

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[libvirt-users] Adding timestamps for all emulator output
by Andrey Korolyov 27 Feb '15

27 Feb '15

Hello, I think it would be useful if libvirt will be able to prefix all messages from emulator pipes with the date stamping, for example I am trying to catch very rare and non-fatal race with virtio-serial-bus: Guest failure in adding device virtio-serial0.0 which is specific to the Windows guests on qemu-kvm. I have supporting infrastructure which can tell me exact times for every action upon this VM, but as bug is not frequent, the continuous monitoring looks like an overkill for a desired goal - find a correlation between emulator event and message from stderr. Patching emulator itself is barely an option, as it is ugly, requires refresh of the running code via loopback migration and completely non-universal, as every hypervisor should be modified seperately. I`d highly appreciate positive consideration for such functionality addition or can write a patch shortly, if needed. Thanks!

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[libvirt-users] Questión about DNS config on dnsmasq
by Carlos Miranda Molina (Mstaaravin) 26 Feb '15

26 Feb '15

Hello guys... I'm using libvirt in my local laboratory and I have a question/problem about DNS settings over dnsmasq (by libvirt) I have a NAT network separately from my real network, i need simulated some DNS hosts to NAT network like ftp.debian.org (for testing purposes, etc) This is for example a dumpxml (yes, i'm using PXE boot for testing and is working fine) <network> <name>net0</name> <uuid>5a014735-f658-7a87-c7d4-e6b0f488c332</uuid> <forward mode='nat'/> <bridge name='net0' stp='on' delay='0'/> <mac address='52:54:00:b5:24:7b'/> <dns> <host ip='192.168.122.1'> <hostname>mirrors.kernel.org</hostname> <hostname>mirrors.dcarsat.com.ar</hostname> <hostname>ftp.debian.org</hostname> </host> </dns> <ip address='192.168.122.1' netmask='255.255.255.0'> <tftp root='/home/tftp'/> <dhcp> <range start='192.168.122.2' end='192.168.122.99'/> <bootp file='pxelinux.0'/> </dhcp> </ip> </network> Look <dns> & <hostname> section, that works correctly but only if I add hostnames on net0 when was offline. <dns> <host ip='192.168.122.1'> <hostname>mirrors.kernel.org</hostname> <hostname>mirrors.dcarsat.com.ar</hostname> <hostname>ftp.debian.org</hostname> </host> </dns> How i can add more hostnames with my network (net0) are still online...? virsh net-update default add-last dns-host (for example, doesn't work) and the official documentation @ http://libvirt.org/formatnetwork.html#elementsAddress doesn't say more. I test with <forwarder > but doesn't work (192.168.10.100 is a dnsmasq outside libvirt control) <network> <name>net0</name> <uuid>5a014735-f658-7a87-c7d4-e6b0f488c332</uuid> <forward mode='nat'/> <bridge name='net0' stp='on' delay='0'/> <mac address='52:54:00:b5:24:7b'/> <dns> <forwarder addr="192.168.10.100"/> </dns> <ip address='192.168.122.1' netmask='255.255.255.0'> <tftp root='/home/tftp'/> <dhcp> <range start='192.168.122.2' end='192.168.122.99'/> <bootp file='pxelinux.0'/> </dhcp> </ip> </network> Anyone can help me...? thanks -- "La Voluntad es el único motor de nuestros logros" http://blog.ngen.com.ar/

2 1

[libvirt-users] A problem with converting an OVA appliance
by Marko Dimjašević 26 Feb '15

26 Feb '15

Hi all, I've been having a problem when trying to convert an Open Virtualization Appliance (OVA) format appliance to the "virt-image" format. This is how I try to convert the appliance: $ virt-convert --arch=i686 -i ovf appliance.ova The result is: ERROR Couldn't import file "appliance.ova": must be string without null bytes or None, not str This happens on a Debian Wheezy (7.8) machine. virt-convert is at version 0.600.1. All libvirt* packages are at version 1.2.9. Unfortunately, I couldn't find anyone else through web searches having the same issue and then applying their solution. It'd be great if someone can help with trying to figure out what is going on here... -- Regards, Marko http://dimjasevic.net/marko

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[libvirt-users] Fwd: Unattended guest installation fails
by ChandraShekar Shastri 25 Feb '15

25 Feb '15

Hi, I am following the below link to install a Fedora19 guest on Fedora19 Host. http://kashyapc.com/2011/08/18/unattended-guest-install-with-a-local-kickst… Version : libvirtd (libvirt) 1.0.5.1, QEMU emulator version 1.4.2, Copyright (c) 2003-2008 Fabrice Bellard I have the iso which I loop mounted and created a http repo using python module "python -m SimpleHTTPServer". This repo is properly accessible and the guest is able to pull the initrd.img and vmlinuz but further it fails. Please find the attached xml and console messages and let me know how to proceed further. Thanks, Chandrashekar

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