March 2015 - Users - libvirt List Archives

[libvirt-users] Installation of libvirt on Ubuntu
by WANG Cheng D 27 Mar '15

27 Mar '15

Dear all, I wonder if libvirt can work on Ubuntu. As you know, it is very convenient to install libvirt on Fedora. I can download the libvirt packet from libvirt.org and install it using command ./configure, make and make install. As I am going to install an open source simulation system named openairinterface, Ubuntu is the recommended OS, and I want to install the simulation system in libvirt lxc. (as you may know, there is another lxc user space tool on Ubuntu whose official website is "https://linuxcontainers.org", which I don't want to use). My questions are: 1) Can I install libvirt on Ubuntu with the same installation steps as on Fedora (i.e., manually download the tar.gz packet and install it locally)? I found a link talking about installation libvirt on Ubuntu which installs something like "libvirt-bin" (https://help.ubuntu.com/lts/serverguide/libvirt.html) I am not sure if libvirt can be installed following this instruction? 2) How can I create the rootfs for a Ubuntu container if libvirt can be installed on Ubuntu? I create the rootfs for Fedora container using: # yum --installroot=/root/fedora16linux container --releasever=19 install -y openssh, bridge-utils". How can I achieve this on Ubuntu? 3) If libvirt can work on Ubuntu, Can a disk file on the host OS be exposed to a Ubuntu container just like on Fedora? With my warmest regards, Cheng Wang

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Re: [libvirt-users] pty pairing host - guest
by Neel Basu 27 Mar '15

27 Mar '15

Getting no output on /dev/hvcNN On Thu, Mar 19, 2015 at 3:15 PM, Daniel P. Berrange <berrange(a)redhat.com> wrote: > On Thu, Mar 19, 2015 at 01:29:37PM +0530, Neel Basu wrote: > > HI!, > > > > I am using virt-manager GUI. There I can add a `Console Device` through > > Add Hardware. I can add a virtio pty WITHOUT restarting the VM. also I > get > > a pty allocated to host machine say `/dev/pty/M` > > > > My expectation is this `host:/dev/pty/M` is connected with a > > `guest:/dev/ttyN`. so If I open minicom or screen and write to > > `host:/dev/pty/M` it will be propagated to 'guest:/dev/ttyN'. Is my > > expectation correct ? > > > > If it is correct how will I know what is the guest tty allocated against > > this host pty ? > > No, that's not how it works. The <console> devices are exposed to > the guest as /dev/hvcNN devices. Starting with NN==0 > > as per the dumpxml output <console type='pty' tty='/dev/pts/1'> <source path='/dev/pts/1'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> I expected host:/dev/pts/1 is paired with guest:/dev/hvc0 So I tried to communicate with minicom,echo,cat with these two but I saw no output. what I echo on /dev/pts/1 doesn't pass to /dev/hvc0 or vice verse. > > > Similar to console device I can add a Serial device but that requires a > > reboot of the guest VM. However I tried that though I prefer to do it > > without a guest restart. > > > > <serial type='pty'> > > <source path='/dev/pts/1'/> > > <target port='0'/> > > <alias name='serial0'/> > > </serial> > > > > here also I expected host:/dev/pts/1 is paired with /dev/ttyS0 but > couldn't > > communicate. > > The serial port device supported is a 1990 era ISA bus serial port > so there's no hotplug for that. Only the paravirt consoles can be > hotplugged. > > Regards, > Daniel > -- > |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ > :| > |: http://libvirt.org -o- http://virt-manager.org > :| > |: http://autobuild.org -o- http://search.cpan.org/~danberr/ > :| > |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc > :| >

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[libvirt-users] virConnectListAllNodeDevices requires number of devices to be known
by Neel Basu 26 Mar '15

26 Mar '15

Hi, virConnectListAllNodeDevices() takes a virNodeDevicePtr **devices. So I need to create an array of virNodeDevicePtr. For that I need to know size / Number of devices. What is the function for that ? Thank You.

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Re: [libvirt-users] no luck with filesystem storage type [solved]
by Boylan, Ross 26 Mar '15

26 Mar '15

I needed one more option to make it work: # mount -t 9p /mnt/SASInstaller /mnt/SASInstaller/ mount: wrong fs type, bad option, bad superblock on /mnt/SASInstaller, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so # mount -t 9p -o trans=virtio /mnt/SASInstaller /mnt/SASInstaller The page you referenced also mentions using -oversion=9p2000.L. There is some additional info on the versions at http://landley.net/kdocs/Documentation/filesystems/9p.txt; that page says .L is the default, while http://wiki.qemu.org/Documentation/9psetup#Starting_the_Guest_using_libvirt says it's .U. I don't know how to tell which I ended up with. Thanks for the pointer. Ross ________________________________________ From: Ján Tomko [jtomko(a)redhat.com] Sent: Thursday, March 26, 2015 1:43 AM To: Boylan, Ross Cc: libvirt-users(a)redhat.com Subject: Re: [libvirt-users] no luck with filesystem storage type On Thu, Mar 26, 2015 at 01:37:06AM +0000, Boylan, Ross wrote: > I have a directory on the host that I would like to be visible in the guest/domain. Using virt-manager I selected the directory, resulting in this configuration: > <filesystem type='mount' accessmode='passthrough'> > <source dir='/mnt/SASInstaller'/> > <target dir='/mnt/SASInstaller'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> > </filesystem> > I created the /mnt/SASInstaller manually in the VM. > > Nothing shows up. What am I missing? Do I need to run something in the VM (running Linux) to make it work? You need to mount it: mount -t 9p /mnt/SASInstaller /mnt/SASInstaller The target 'dir' is not really a directory, it's just a mount tag. See: http://wiki.qemu.org/Documentation/9psetup#Starting_the_Guest_using_libvirt Jan

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[libvirt-users] no luck with filesystem storage type
by Boylan, Ross 26 Mar '15

26 Mar '15

I have a directory on the host that I would like to be visible in the guest/domain. Using virt-manager I selected the directory, resulting in this configuration: <filesystem type='mount' accessmode='passthrough'> <source dir='/mnt/SASInstaller'/> <target dir='/mnt/SASInstaller'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </filesystem> I created the /mnt/SASInstaller manually in the VM. Nothing shows up. What am I missing? Do I need to run something in the VM (running Linux) to make it work? Thanks. Ross Boylan

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[libvirt-users] libvirtd can't start
by 梅磊 26 Mar '15

26 Mar '15

Hi experts, The libvirtd can’t start on my server after the server interruption of power supply, the status is below: [root@openstack3 libvirt]# service libvirtd status Redirecting to /bin/systemctl status libvirtd.service libvirtd.service - Virtualization daemon Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled) Active: failed (Result: signal) since Tue 2015-03-24 16:10:31 CST; 7min ago Process: 27372 ExecStart=/usr/sbin/libvirtd $LIBVIRTD_ARGS (code=killed, signal=SEGV) Main PID: 27372 (code=killed, signal=SEGV) Mar 24 16:10:31 openstack3 libvirtd[27372]: 2015-03-24 08:10:31.412+0000: 27383: debug : virFileClose:90 : Closed fd 22 Mar 24 16:10:31 openstack3 libvirtd[27372]: 2015-03-24 08:10:31.412+0000: 27383: debug : virFileClose:90 : Closed fd 22 Mar 24 16:10:31 openstack3 libvirtd[27372]: 2015-03-24 08:10:31.412+0000: 27383: debug : virFileClose:90 : Closed fd 22 Mar 24 16:10:31 openstack3 libvirtd[27372]: 2015-03-24 08:10:31.412+0000: 27383: debug : virFileClose:90 : Closed fd 22 Mar 24 16:10:31 openstack3 libvirtd[27372]: 2015-03-24 08:10:31.413+0000: 27383: debug : virFileClose:90 : Closed fd 22 Mar 24 16:10:31 openstack3 libvirtd[27372]: 2015-03-24 08:10:31.413+0000: 27383: debug : virStateInitialize:847 : Running global init for netcf state driver Mar 24 16:10:31 openstack3 libvirtd[27372]: 2015-03-24 08:10:31.413+0000: 27383: debug : virObjectNew:199 : OBJECT_NEW: obj=0x7f73f0080d00 classname=virNetcfDriverState Mar 24 16:10:31 openstack3 libvirtd[27372]: ====== end of log ===== Mar 24 16:10:31 openstack3 systemd[1]: libvirtd.service: main process exited, code=killed, status=11/SEGV Mar 24 16:10:31 openstack3 systemd[1]: Unit libvirtd.service entered failed state. And the attachment is the log after restart the libvirtd. After long time search on google, I didn’t get any useful information, so anyone can give me some hint on this issue? -BR, Andy

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[libvirt-users] machine='pc-q35-2.1' and sata controller
by Thomas Stein 25 Mar '15

25 Mar '15

Hello. I'm not able to disable the sata controller on a machine='pc-q35-2.1' type VM. Whenever i delete: <controller type='sata' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/> </controller> it gets added again when i close the editor. The reason i would like to delete the sata controller is this error while trying to migrate the machine: 2015-02-23 19:04:11.181+0000: 1972: error : qemuMonitorJSONCheckError:381 : internal error: unable to execute QEMU command 'migrate': State blocked by non-migratable device '0000:00:1f.2/ich9_ahci' Someone has an idea to solve this? thanks and cheers t.

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[libvirt-users] Listing on Host sFlow under Applications>Monitoring
by Peter Phaal 25 Mar '15

25 Mar '15

Would it be possible to list the Host sFlow project in the Monitoring section of http://libvirt.org/apps.html? Host sFlow <http://host-sflow.sourceforge.net/> Host sFlow is a light weight agent running on KVM hypervisors that links to libvirt library and exports standardized cpu, memory, network and disk metrics for all virtual machines using sFlow protocol. Thanks, Peter

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[libvirt-users] virsh dom state
by Fiorenza Meini 24 Mar '15

24 Mar '15

Hi there, I'm running KVM under Openstack . When I give virsh list command, I see some VM in NON persistent state. What does it mean? How can I move it to a persisten state ? I found that I cannot make a snapshot, from Openstack , of a machine which is in a NON PERSISTENT state. Regards Fiorenza -- Spazio Web S.r.l. V. Dante, 10 13900 Biella Tel.: +39 015 2431982 Fax.: +39 015 2522600 Numero d'Iscrizione al Registro Imprese presso CCIAA Biella, Cod.Fisc.e P.Iva: 02414430021 Iscriz. REA: BI - 188936 Cap. Soc.: €. 30.000 i.v.

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[libvirt-users] java binding in central maven repository
by Laszlo Hornyak 23 Mar '15

23 Mar '15

Hi, The last libvirt artifact published to the maven central repository was 0.4.7 in 2011. The libvirt.org/maven2 repository is updated, but - sometimes the libvirt.org webserver is not responding and that breaks the build. - for similar reasons projects depending on other maven repositories can not upload to central repository Can we get back updates to maven central repo? Best regards, Laszlo -- EOF

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